The AD4130-8 is an ultra low power, high precision, measurement solution for low bandwidth battery operated applications. The fully integrated analog front end (AFE) includes a multiplexer for up to 16 single-ended or eight differential inputs, programmable gain amplifier (PGA), 24-bit sigma-delta (?-?) analog-to-digital converter (ADC), on-chip reference and oscillator, selectable filter options, smart sequencer, sensor biasing and excitation options, diagnostics, and newly added features to improve the battery-operated lifetime (more than 5 years on a coin cell), that is, a first in, first out (FIFO) buffer and duty cycling.The AD4130-8 allows users to measure low frequency signals with a current consumption of 28.5 ?A (gain = 1) and 32.5 ?A (gain = 128) while continuously converting, and even lower average currents when using one of the duty cycling options. The AD4130-8 can be configured to have 8 differential inputs or 16 single-ended or pseudo differential inputs, which connect to a crosspoint multiplexer, where any input pair can become a measurement channel input to the PGA and ADC.The AD4130-8 is designed to allow the user to operate from a single analog supply voltage from 1.71 V to 3.6 V. In battery applications, operation as low as 1.71 V can extend the system lifetime as the AFE can continue its operation, even as the battery voltage dissipates. The digital supply can be separate and range from 1.65 V to 3.6 V.Together with the reduced current consumption, the integration of an on-chip FIFO buffer can be used in tandem with the smart sequencer, to enable the AD4130-8 to become an autonomous measurement system, which allows the microcontroller to sleep for extended periods.Intelligent interrupt functionality gives the user a greater confidence in both error detection and safety. The user can enable an interrupt signal to trigger when the samples in the FIFO reach a predefined value or when a user programmable threshold is exceeded.The following key analog functions are offered on the AD4130-8 to allow simple and effective connection to transducers used for measuring temperature, load, and pressure: PGA. Due to the programmable gain (from 1 to 128) and the high input impedance with low input current, the PGA allows direct interfacing to transducers with low output amplitudes like resistive bridges, thermocouples, and resistance temperature detectors (RTDs). The capacitive PGA allows full common-mode input range, giving designers greater margin for widely varying input common modes. A wider common-mode input range improves the overall resolution and is highly effective in ratio metric measurements. Low drift precision current sources. The IEXC0 and IEXC1 current source can be used to excite 2?, 3?, and 4?wire RTDs. Excitation current output options include 100 nA, 10 ?A, 20 ?A, 50 ?A, 100 ?A, 150 ?A, and 200 ?A. The low-side power switch (PDSW) can be used to power down bridge sensors between conversions. The PDSW can be controlled within the sequencer on a per channel basis, allowing optimum timing and energy savings in the overall system. The PDSW can also allow higher powered analog sensors to be used in a low power system. Voltage bias for thermocouples (the VBIAS source sets the common-mode voltage of a channel to AVDD/2). The smart sequencer allows the conversion of each enabled preconfigured channel in a predetermined order, allowing a mix of transducer, system checks and diagnostic measurements to be interleaved. The sequencer eliminates need for repetitive serial interface communication with the device. Sixteen channels can be configured in the sequence, each of them selecting from eight predefined ADC setups that allow selection of gain, filter type, output data rate, buffering, timing, and reference source.High levels of integrated front-end functionality coupled with small package options allow smaller end solutions. For example, the AD4130-8 integrates a low thermal drift band gap reference in addition to accepting an external differential reference, which can be internally buffered.In safety critical applications the AD4130-8 includes diagnostic functionality such as open wire detection via burnout currents, internal temperature sensor, reference detection, and analog input overvoltage and undervoltage detection. Added diagnostics are included on the digital interface like cyclic redundancy check (CRC) and serial interface checks for a robust communication link.APPLICATIONS Smart transmitters Wireless battery and harvester powered sensor nodes Portable instrumentation Temperature measurement: thermocouple, RTD, thermistors Pressure measurement: bridge transducers Healthcare and wearables

The AD4630-16 is a two-channel, simultaneous sampling, Easy Drive?, 2 MSPS successive approximation register (SAR) analog-to-digital converter (ADC). With a guaranteed maximum ?3 ppm integral nonlinearity (INL) and no missing codes at 16-bits, the AD4630-16 achieves excellent precision from ?40?C to +125?C. Figure 1 in the data sheet shows the functional architecture of the AD4630-16.A low-drift, internal precision reference buffer eases voltage reference sharing with other system circuitry. The AD4630-16 offers a typical dynamic range of 97.4 dB when using a 5 V reference. The low noise floor enables signal chains requiring less gain and lower power. A block averaging filter with programmable decimation ratio is available and can reduce noise for low bandwidth signals, improving accuracy. The wide differential input and common-mode ranges allow inputs to use the full (?VREF range without saturating, simplifying signal conditioning requirements and system calibration. The improved settling of the Easy Drive analog inputs broadens the selection of analog front-end components compatible with the AD4630-16. Both single-ended and differential signals are supported.The versatile Flexi-SPI serial peripheral interface (SPI) eases host processor and ADC integration. A wide data clocking window, multiple serial data output (SDO) lanes, and optional dual data rate (DDR) data clocking can reduce the serial clock to 10 MHz while operating at a sample rate of 2 MSPS. Echo clock mode can relax the timing requirements and simplify the use of digital isolators.The ball grid array (BGA) package of the AD4630-16 integrates all critical power supply and reference bypass capacitors, reducing the footprint and system component count, and lessening sensitivity to board layout.APPLICATIONS Automatic test equipment Digital control loops Medical instrumentation Seismology Semiconductor manufacturing Scientific instrumentation

The AD4630-24 is a two-channel, simultaneous sampling, Easy Drive, 2 MSPS successive approximation register (SAR) analog-to-digital converter (ADC). With a guaranteed maximum ?0.9 ppm INL and no missing codes at 24-bits, the AD4630-24 achieves unparalleled precision from ?40?C to +125?C. Figure 1 in the data sheet shows the functional architecture of the AD4630-24.A low-drift, internal precision reference buffer eases voltage reference sharing with other system circuitry. The AD4630-24 offers a typical dynamic range of 106 dB when using a 5 V reference. The low noise floor enables signal chains requiring less gain and lower power. A block averaging filter with programmable decimation ratio can increase dynamic range up to 153 dB. The wide differential input and common mode ranges allow inputs to use the full ?VREF range without saturating, simplifying signal conditioning requirements and system calibration. The improved settling of the Easy Drive analog inputs broadens the selection of analog front-end components compatible with the AD4630-24. Both single-ended and differential signals are supported.The versatile Flexi-SPI serial interface eases host processor and ADC integration. A wide data clocking window, multiple SDO lanes, and optional dual data rate (DDR) data clocking can reduce the serial clock to 10 MHz while operating at a sample rate of 2 MSPS. Echo clock mode and ADC master clock mode relax the timing requirements and simplify the use of digital isolators.The 64-ball chip scale package ball grid array (CSP_BGA) of the AD4630-24 integrates all critical power supply and reference bypass capacitors, reducing the footprint and system component count, and lessening sensitivity to board layout.APPLICATIONS Automatic test equipment Digital control loops Medical instrumentation Seismology Semiconductor manufacturing Scientific instrumentation

The AD5222 contains two, 128-position, digitally-controlled variable resistors (VR). This part performs the same electronic adjustment function as a potentiometer, trimmer, or variable resistor. . The fixed A-to-B terminal resistance of 10 K, 50 K, 100 K, or 1 M Ohm has a 1% channel-to-channel matching tolerance with a nominal temperature coefficient of -300 ppm/?C. These products were optimized for portable instrument and test equipment 'push button' applications.The chip select CS, count CLK and U/D direction control inputs set the variable resistor position. A MODE control determines whether both VRs are incremented together or independently. With MODE at logic zero, both wipers are incremented UP or DOWN without changing the relative settings between the wipers. The relative ratio between the wipers is preserved if either wiper reaches the end of the resistor array. In the independent MODE (logic one) only the VR determined by the DACSEL pin is changed. This simple 'push button' controlled interface eliminates the need for Micro Controllers in front panel interface designs.The AD5222 is available in the surface mount (SO-14) package. For ultra compact solutions selected models are available in the thin TSSOP-14 package. All parts are guaranteed to operate over the extended industrial temperature range of -40?C to +85?C. For 3-wire, SPI compatible interface applications, see the AD5203?/ AD5206?/ AD7376?/ AD8400?/ AD8402?/ AD8403?products.APPLICATIONS Stereo Channel Audio Level Control Mechanical Potentiometer Replacement Remote Incremental Adjustment Applications Instrumentation: Gain, Offset Adjustment Programmable Voltage-to-Current Conversion Line Impedance Matching

The AD5247 provides a compact, 2 mm ? 2.1 mm, packaged solution for 128-position adjustment applications. This device performs the same electronic adjustment function as a mechanical potentiometer or a variable resistor. Available in four different end-to-end resistance values (5 k?, 10 k?, 50 k?, and 100 k?), these low temperature coefficient devices are ideal for high accuracy and stability variable resistance adjustments.The wiper settings are controllable through the I2C?-compatible digital interface, which can also be used to read back the present wiper register control word. The 10 k? and 100 k? options each have three hard-coded slave address options available to allow users access to three of these devices on one I2C bus (see Table 8 for a full list of slave address locations).The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC latch. Note the terms digital potentiometer, VR (variable resistor), and RDAC are used interchangeably in this document.Operating from a 2.7 V to 5.5 V power supply and consuming 3 ?A allows the AD5247 to be used in portable battery-operated applicationsApplications Mechanical potentiometer replacement in new designs Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier-biasing LCD brightness and contrast adjustment Automotive electronics adjustment Gain control and offset adjustment

The AD5290 is one of the few high voltage, high performance, and compact digital potentiometers1 in the market at present. This device can be used as a programmable resistor or resistor divider. The AD5290 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and trimmers, with enhanced resolution, solid-state reliability, and superior temperature stability.With digital rather than manual control, the AD5290 provides layout flexibility and allows closed-loop dynamic controllability.The AD5290 is available in MSOP-10 package and has 10 k?, 50 k?, and 100 k? options. All parts are guaranteed to operate over the ?40?C to +125?C extended automotive temperature range.Applications High voltage DAC Programmable power supply Programmable gain and offset adjustment Programmable filters and delays Actuator control Audio volume control Mechanical potentiometer replacement1 The RDAC segmentation is protected by U.S. Patent Number 5,495,245.

The AD5313R, a member of the nanoDAC? family, is a low power, dual, 10-bit buffered voltage output digital-to-analog converter (DAC). The device includes a 2.5 V, 2 ppm/?C internal reference (enabled by default) and a gain select pin giving a full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2). The AD5313R operates from a single 2.7 V to 5.5 V supply, is guaranteed monotonic by design, and exhibits less than 0.1% FSR gain error and 1.5 mVoffset error performance. The device is available in a 3 mm ?3 mm LFCSP package and a TSSOP package.The AD5313R also incorporates a power-on reset circuit and a RSTSEL pin that ensures that the DAC outputs power up tozero scale or midscale and remain there until a valid write occurs. The part contains a per channel power-down feature that reduces the current consumption of the device to 4 ?A at 3 V while in power-down modeThe AD5313R employs a versatile serial peripheral interface (SPI) that operates at clock rates up to 50 MHz, and the devicecontains a VLOGIC pin that is intended for 1.8 V/3 V/5 V logic.Product Highlights Precision DC Performance. Total unadjusted error: ?0.1% of FSR maximum Offset error: ?1.5 mV maximum Gain error: ?0.1% of FSR maximum Low Drift 2.5 V On-Chip Reference. 2 ppm/?C typical temperature coefficient 5 ppm/?C maximum temperature coefficient Two Package Options. 3 mm ? 3 mm, 16-lead LFCSP 16-lead TSSOPApplications Optical transceivers? Base station power amplifiers? Process control (PLC I/O cards) Industrial automation Data acquisition systems

The AD5320 is a single, 12-bit buffered voltage out DAC that operates from a single +2.7 V to +5.5 V supply consuming 115 ?A at 3 V. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5320 utilizes a versatile three-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI?,QSPI?, MICROWIRE? and DSP interface standards.The reference for AD5320 is derived from the power supplyinputs and thus gives the widest dynamic output range. Thepart incorporates a power-on reset circuit that ensures that theDAC output powers up to zero volts and remains there until avalid write takes place to the device. The part contains a power-down feature that reduces the current consumption of thedevice to 200 nA at 5 V and provides software selectable outputloads while in power-down mode. The part is put into power-down mode over the serial interface. The low power consumption of this part in normal operationmakes it ideally suited to portable, battery-operated equipment.The power consumption is 0.7 mW at 5 V reducing to 1 ?W inpower-down mode.The AD5320 is one of a family of pin-compatible DACs. TheAD5300 is the 8-bit version and the AD5310 is the 10-bitversion. The AD5300/AD5310/AD5320 are available in 6-leadSOT-23 packages and 8-lead MSOP packages. PRODUCT HIGHLIGHTS Available in 6-lead SOT-23 and 8-lead MicroSOIC packages Low power, single supply operation from 2.7 V to 5.5 V Consumes 0.35 mW at 3 V and 0.7 mW at 5 V Rail-to-Rail output with a slew rate of 1 V/?s Reference derived from the power supply High speed serial interface with clock speeds up to 30 MHz Pin and Software Compatible with the AD5300 (8-Bit) and the AD5310 (10-bit)APPLICATIONS Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators

The LT3954 is a DC/DC converter designed to operate as a constant-current source and constant-voltage regulator. It features an internal low side N-channel MOSFET rated for 40V/5A. The LT3954 is ideally suited for driving high current LEDs, but also has features to make it suitable for charging batteries and supercapacitors. The fixed frequency, current mode architecture results in stable operation over a wide range of supply and output voltages. A voltage feedback pin serves as the input for several LED protection features, and also makes it possible for the converter to operate as a constant-voltage source. A frequency adjust pin allows the user to program the frequency from 100kHz to 1MHz to optimize efficiency, performance or external component size.The LT3954 senses output current at the high side or at the low side of the load. The internal PWM generator can be configured to self-oscillate at fixed frequency with duty ratio programmable from 4% to 96%. When driven by an external signal, the PWM input provides LED dimming ratios of up to 3000:1. The CTRL input provides additional analog dimming capability.Applications High Power LEDs Output Short-Circuit Protected Boost Battery and SuperCap Chargers Accurate Current Limited Voltage Regulators

Demonstration circuit 2081A-B features the LTM4630EY-1, the high efficiency, high density, dual 18A, switch mode step-down μModule® regulator with ±0.8% total DC output accuracy. The input voltage is from 4.5V to 15V. The output voltage is programmable from 0.6V to 1.8V. DC2081A-B is configured as dual-phase, single-output, which can deliver up to 36A maximum. With the help of external compensation, ±3% transient accuracy can be achieved with 25% load step. The board designs with minimum components to demonstrate this high efficiency, high density μModule.

Demonstration circuit 2085 supports the LTC2000 and LTC2000A, a high speed, high dynamic range family of DACs. It was specially designed for applications that require differential DC coupled outputs. DC2085 supports the complete family of the LTC2000 including 16, 14 and 11 bit parts. Companion Board : Stratix board

The LTC3880/LTC3880-1 are dual, PolyPhase DC/DC synchronous step-down switching regulator controllers with an I2C-based PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by LTpowerPlay? software development tool with graphical user interface (GUI).Switching frequency, output voltage, and device address can be programmed using external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. Voltage, current, internal/external temperature and fault status can be read back through the bus interface. The LTC3880 incorporates a 5V linear regulator while the LTC3880-1 uses an external 5V supply for minimum power loss. See comparison to LTC3887 below. VOUT Start-Up Time Max VOUT0/1 Fast ADC Mode for 1 Parameter LTC3887/LTC3887-1 35ms 5.5V/5.5V No LTC3880/LTC3880-1 120ms 4V/5.4V No Applications High Current Distributed Power Systems Telecom, Datacom and Storage Systems Intelligent Energy Efficient Power Regulation

DC2093A-C Demo Board for: LT4275 LTPoE++/PoE+/PoE PD Controller LT4321 PoE Ideal Diode Bridge Controller

The LTC1404 is a complete 600ksps, 12-bit A/D converter which draws only 75mW from a 5V or ?5V supplies. This easy-to-use device comes complete with a 160ns sample-and-hold and a precision reference. Unipolar and bipolar conversion modes add to the flexibility of the ADC. The LTC1404 has two power saving modes: Nap and Sleep. In Nap mode, it consumes only 7.5mW of power and can wake up and convert immediately. In the Sleep mode, it consumes 60?W of power typically. Upon power-up from Sleep mode, a reference ready (REFRDY) signal is available in the serial data word to indicate that the reference has settled and the chip is ready to convert.The LTC1404 converts 0V to 4.096V unipolar inputs from a single 5V supply and ?2.048V bipolar inputs from ?5V supplies. Maximum DC specs include ?1LSB INL, ?1LSB DNL and 45ppm/?C full-scale drift over temperature. Guaranteed AC performance includes 69dB S/(N + D) and ?76dB THD at an input frequency of 100kHz over temperature.The 3-wire serial port allows compact and efficient data transfer to a wide range of microprocessors, microcontrollers and DSPs.Applications High Speed Data Acquisition Digital Signal Processing Multiplexed Data Acquisition Systems Audio and Telecom Processing Digital Radio Spectrum Analysis Low Power and Battery-Operated Systems Handheld or Portable Instruments

The LTC3300-1 is a fault-protected controller IC for transformer-based bidirectional active balancing of multicell battery stacks. All associated gate drive circuitry, precision current sensing, fault detection circuitry and a robust serial interface with built-in watchdog timer are integrated.Each LTC3300-1 can balance up to 6 series-connected battery cells with an input common mode voltage up to 36V. Charge from any selected cell can be transferred at high efficiency to or from 12 or more adjacent cells. A unique level-shifting SPI-compatible serial interface enables multiple LTC3300-1 devices to be connected in series, without opto-couplers or isolators, allowing for balancing of every cell in a long string of series-connected batteries.When multiple LTC3300-1 devices are connected in series they can operate simultaneously, permitting all cells in the stack to be balanced concurrently and independently. Fault protection features include readback capability, cyclic redundancy check (CRC) error detection, maximum on-time volt-second clamps, and overvoltage shutoffs. Features LTC3300-1 SPI-compatible serial interface in which each chip in the stack communicates bidirectionally to the chips of the same type above and below it via currents. There is no limit to the stack height. Large common mode voltage differences are handled by each LTC3300-1. The microprocessor in the BMS system communicates ONLY with the bottom chip in the stack and subsequently all of the chips use the same fixed internal address. LTC3300-2 SPI-compatible serial interface in which each chip has a unique 5-bit pin-strapped address. The microprocessor in the BMS system communicates directly with every chip in the stack with common mode voltage differences handled by digital isolators or opto-couplers. Because of the 5-bit address, the stack height is limited to 32 LTC3300-2 ICs or 192 cells (~800V). There are 5 pins which have a different assignment, all of them serial interface related. Applications Electric Vehicles/Plug-in HEVs High Power UPS/Grid Energy Storage Systems General Purpose Multicell Battery Stacks

Demonstration Circuit 2104A is an off-line boundary conduction mode power factor correction (PFC) boost converter featuring the LT8312. Boundary conduction mode offers inherent MOSFET valley switching to reduce the switching loss and the boost diode zero current switching to remove the diode reverse-recovery loss. The demo board provides a 400V/150W single constant-voltage output suitable for applications requiring regulated input voltage.

The LTC3774 is a dual PolyPhase? current mode synchronous step-down switching regulator controller that drives power blocks, DRMOS or external gate drivers and power MOSFETs. It offers an LTC-proprietary technique that enhances the signal-to-noise ratio of the current sense signal, allowing the use of inductors with very low DC winding resistances as the current sense element for maximum efficiency and reduced jitter.The maximum current sense voltage is programmable from 10mV to 30mV. High speed, low offset remote sense differential amplifiers and a precise 0.6V reference provide accurate output voltages between 0.6V and 3.5V from a wide 4.5V to 38V input supply range. Soft recovery from output shorts or overcurrent minimizes output overshoot. Burst Mode? operation, continuous and pulse-skipping modes are supported. The constant operating frequency can be synchronized to an external clock or linearly programmed from 200kHz to 1.2MHz. Up to six LTC3774 controllers can be paralleled for 1-, 2-, 3-, 4-, 6-, 8- or 12-phase operation.The LTC3774 is available in a 36-lead (5mm ? 6mm) QFN package.Applications Computer Systems Telecom and Datacom Systems Industrial Equipment DC Power Distribution Systems

Demonstration Circuit 2114A features the LT8603 with triple monolithic buck regulators and a boost controller. The demo circuit is designed for 8.0V, 5.0V, 3.3V, and 1.8V outputs from a nominal 12V input. The 4th channel is set as a boost converter and is powered from a wide input range with output VOUT4 regulated at 8V if 3V < VIN < 8.5V. It works as diode pass through if the input is above 8.5V. The two high voltage buck regulators are powered from the boost converter. VOUT1 is regulated at 5V with 1.5A maximum output load current, and VOUT2 is at 3.3V with 2.5A maximum output load current. Thanks to the pre-boost converter, they can ride through a cold crank in automotive applications while providing constant output voltages 5V and 3.3V. The low voltage buck is powered from the VOUT2 (3.3V), and the output VOUT3 is regulated at 1.8V with 1.8A maximum load current.

The LT3790 is a synchronous 4-switch buck-boost voltage/current regulator controller. The LT3790 can regulate output voltage, output current, or input current with input voltages above, below, or equal to the output voltage. The constant-frequency, current mode architecture allows its frequency to be adjusted or synchronized from 200kHz to 700kHz. No top FET refresh switching cycle is needed in buck or boost operation. With 60V input, 60V output capability and seamless transitions between operating regions, the LT3790 is ideal for voltage regulator, battery/super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.The LT3790 provides input current monitor, output current monitor, and various status flags, such as C/10 charge termination and shorted output flag.APPLICATIONS Automotive, Telecom, Industrial Systems High Power Battery-Powered System

The LT4275 is a pin-for-pin compatible family of IEEE 802.3 and LTPoE++ powered device (PD) controllers.The LT4275A employs a proprietary LTPoE++ classification scheme, delivering 38.7W, 52.7W, 70W or 90W of power at the PD RJ45 connector. The LT4275A is fully compatible with IEEE 802.3. The LT4275B is an IEEE 802.3at compliant, Type 2 (PoE+) PD delivering up to 25.5W. The LT4275C is an IEEE 802.3af compliant, Type 1 (PoE) PD delivering up to 13W.The LT4275 internal charge pump provides an N-channel MOSFET solution, eliminating a larger and more costly P-channel MOSFET. A low RDS(ON) MOSFET also maximizes power delivery and efficiency, reduces power and heat dissipation, and eases thermal design. Startup inrush current is adjustable with an external capacitor. The LT4275 also includes a power good output, on-board signature resistor, undervoltage lockout, and thermal protection. The LT4275A/LT4275B drives a single opto-coupler to indicate the power level of the attached PSE. Pin-selectable support for non-standard low voltage operation is provided. Auxiliary power override is supported with the AUX pin.The LT4275A can be configured to support all possible LTPoE++, 802.3at and 802.3af power levels with external component changes.Applications High Power Wireless Data Systems Outdoor Security Camera Equipment Commercial and Public Information Displays High Temperature Industrial Applications