Headphone Amplifier for Voltage-Output Audio DACs Reference Design
Description
This reference design details a high-fidelity headphone amplifier circuit suitable for portable applications: such as smartphones and tablets. It uses an operational amplifier (op amp) with low power consumption and a very small package to convert a differential output voltage to a single-ended signal suitable for headphones. The design achieves -110.2dB THD+N at >50mW of output power into 32Ω headphones.
Features
- Low power consumption (1.6mA/Ch) to maximize battery lifeExtremely small solution size for space-constrained designs>50mW output power (32Ω): suitable for a range of headphones-106.7dB THD+N (1kHz: 10mW: 32Ω) for exceptional audio quality31mΩ output impedanceStable into most headphones without series resistance
Applications
- Desktop PC/motherboard
- Tablet (multimedia)
- Aircraft cockpit display
- Interconnect/distribution box
- Professional speaker systems
- RF smart remote control
- DJ equipment
- Piano
- keyboard & synthesizer
- Digital stethoscope
- Broadcast reference monitor
- Turntable
- Chromebook & WOA
- Circuit breaker (ACB
- MCCB
- VCB)
- Professional audio mixer/control surface
- Smartphone
- Standard notebook PC
Product Categories
- Amplifiers
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| Download the bill of materials for TIPD189 | Download |
Design File
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Download the design file for TIPD189Test Data
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Download the test file for TIPD189| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIPD189 BOM | 02 Nov 2015 | 110 | ||
| TIPD189 Schematic | 02 Nov 2015 | 103 |