Search results

Using the TMS320C5515/14/05/04 Bootloader

Demonstration circuit 2071A features the LTC2373 family. The LTC2374/LTC2373/LTC2372 are low noise, high speed, 8-channel, 16/18-bit successive approximation register (SAR) ADCs. The demo manual refers to the LTC2373-18 but applies to all parts in the family, the only differences being the number of bits and the maximum sample rate. Operating from a single 5V supply, the LTC2373-18 has a highly configurable, low crosstalk, 8-channel input multiplexer, supporting fully differential, pseudo-differential unipolar and pseudo-differential bipolar analog input ranges.

The PMP7022 is 1mW (3.1V at 300uA) galvanic isolated DC/DC reference design built to supply a MSP430 metering unit. The design utilising again MSP430 open loop push-pull stage. Very efficient design with current supply (inclusive load current) as low as 800uA. Input voltage range: 3.1VDC-3.3VDC; Output current: 300uA; Output voltage: 3.1VDC

The CC1101-CC1190EM 869MHz reference design contains schematics and layout files for the CC1101-CC1190EM 869MHz evaluation module. The reference design demonstrates good techniques for CC1101-CC1190 decoupling and RF layout. For optimum RF performance: these parts should be copied accurately. This is a 4-layer reference design with a discrete balun and an SMA antenna connector designed for a single ended 50 ohm antenna. The RF section has been designed and characterized for operation in the 869.4 - 869.65 MHz frequency sub-band (g3): but can also be used for other frequencies in the European 863 - 870 MHz band.

PowerPAD™ Made Easy Application Brief

This automotive point-of-load converter generates 3.3V@600mA from an input voltage of 6 to 18V.

This single cell Li-Ion battery input boost converter provides a 5.3V output at 1.1A (5.8W). It achieves 90% efficiency at full load and operates at 1MHz. PMP7426 uses the TPS55340 high voltage boost converter.

The ADP2140 includes a high efficiency, low quiescent 600 mAstepdown dc-to-dc converter and a 300 mA LDO packaged in asmall 10-lead 3 mm ? 3 mm LFCSP. The total solution requiresonly four tiny external components.The buck regulator uses a proprietary high speed current-mode,constant frequency, pulse-width modulation (PWM) controlscheme for excellent stability and transient response. To ensurethe longest battery life in portable applications, the ADP2140 hasa power saving variable frequency mode to reduce switching frequencyunder light loads.The LDO is a low quiescent current, low dropout linear regulatordesigned to operate in a split supply mode with VIN2 as low as1.65 V. The low input voltage minimum allows the LDO to bepowered from the output of the buck regulator increasing efficiencyand reducing power dissipation. The ADP2140 runs frominput voltages of 2.3 V to 5.5 V allowing single Li+/Li? polymer cell, multiple alkaline/NiMH cell, PCMCIA, and other standardpower sources.ADP2140 includes a power-good pin, soft start, and internal?compensation. Numerous power sequencing options are user-selectable through two enable inputs. In autosequencing mode, the highest voltage output enables on the rising edge of EN1.?During logic controlled shutdown, the input disconnects from the output and draws less than 300 nA from the input source.?Other key features include: undervoltage lockout to prevent deep?battery discharge, soft start to prevent input current overshoot?at startup, and both short-circuit protection and thermal overload protection circuits to prevent damage in adverse conditions.When the ADP2140 is used with two 0603 capacitors, one 0402capacitor, one 0402 resistor, and one 0805 chip inductor, the totalsolution size is approximately 90 mm2 resulting in the smallest footprintsolution to meet a variety of portable applications.Applications Mobile phones Personal media players Digital camera and audio devices Portable and battery-powered equipment

A DSP/BIOS AIC23 Codec Device Driver for the TMS320C6416 DSK Application Report

The EVAL-AD7134FMCZ evaluation kit features the AD7134 24-bit, 4-channel, simultaneous sampling, 1.5 MSPS precision alias free analog-to-digital converter (ADC). Two on-board AD7134 ADCs are included to demonstrate multidevice simultaneous sampling. The EVAL-AD7134FMCZ draws power from the system demonstration platform (SDP) EVAL-SDP-CH1Z (SDP-H1) board, and the on-board dc-to-dc regulators regulate an external supply of 8 V to 14 V down to 5 V, 1.8 V, and 1.2 V to supply the AD7134 and peripheral components. Both on-board ADCs have a separate reference of 4.096 V generated by the on-board ADR444. The ADCs have three clock input options and can be clocked by a crystal input, a microelectromechanical system (MEMS) oscillator, or a complementary metal-oxide semiconductor (CMOS) clock. The EVAL-AD7134FMCZ connects to the PC USB port via the SDP-H1 board. The AD7134 evaluation software running on a PC provides full accessibility to the AD7134 device register map, as well as a data analysis interface to display key parameters and graphics from the conversion result in both time and frequency domains. For full details on the AD7134, see the AD7134 data sheet, which must be consulted in conjunction with this user guide when using the EVAL-AD7134FMCZ.

The PMP5124 reference design provides 12V at 7A from a 48V telecom input with greater than 95% efficiency. This design uses the UCC2897A active clamp controller with self-driven synchronous rectifiers to achieve very high efficiency.