Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Topology | Stereo DirectPath headphone amplifier |
| Supply | 2.3 V to 5.5 V |
| Output Power | 25-mW-class headphone output |
| Gain Settings | −6 dB, 0 dB, 3 dB or 6 dB hardware-selectable |
| Input | Fully differential or single-ended |
| Supply Current | 2.1 mA typical stated |
| PSRR | 100 dB at 217 Hz and 90 dB at 10 kHz stated |
| Exact Package / Packing | WQFN (RTE), 16 pins, 3 mm × 3 mm; 3000-piece large reel; −40°C to +85°C; marking AIWI |
Product Overview
TPA6132A2RTER is a simpler low-power DirectPath headphone amplifier than the I²C-controlled TPA6130A2. Gain is selected with hardware pins, so the design does not need a register-control bus for basic operation.
DirectPath keeps the outputs centered around ground and removes external DC-blocking capacitors. Active click/pop suppression and built-in input resistors further reduce the external analog component count.
The 25-mW power level targets efficient headphone listening rather than receiver/speaker drive. The compact 3 mm WQFN and 2.1-mA typical supply current make it attractive when board area and battery current matter more than software programmability.
For related devices, see HKEQGOO’s Audio Amplifiers category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TPA6132A2RTER |
| Topology | Stereo DirectPath headphone amplifier |
| Supply | 2.3 V to 5.5 V |
| Output Power | 25-mW-class headphone output |
| Gain Settings | −6 dB, 0 dB, 3 dB or 6 dB hardware-selectable |
| Input | Fully differential or single-ended |
| Supply Current | 2.1 mA typical stated |
| PSRR | 100 dB at 217 Hz and 90 dB at 10 kHz stated |
| Exact Package / Packing | WQFN (RTE), 16 pins, 3 mm × 3 mm; 3000-piece large reel; −40°C to +85°C; marking AIWI |
| Manufacturer Status | Active / Production |
| Part Marking | AIWI |
Functional Highlights
Hardware gain selection simplifies hostless audio paths
A codec or line source can feed the amplifier without MCU/I²C initialization, which can reduce boot complexity.
Constant maximum power across the supply range helps limit acoustic shock
The architecture is designed so battery voltage changes do not simply translate into a large change in maximum headphone output.
Design Considerations
- Choose the gain setting from source amplitude and headphone sensitivity so clipping margin is preserved.
- Keep charge-pump capacitors and ground returns close to the WQFN pins.
- Do not assume the 138-mW-class capability of TPA6130A2 applies to this 25-mW device.
Product Status and Exact Order Code
Texas Instruments lists TPA6132A2RTER as Active / Production; WQFN (RTE), 16 pins; 3000-piece large tape and reel; −40°C to +85°C; marking AIWI.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
For a DirectPath stereo headphone amplifier needing programmable digital volume, compare TPA6130A2RTJR, which uses an I²C control interface and a larger 20-pin WQFN package. This TPA6132A2RTER is a fixed-gain 16-pin WQFN option with lower specified output-power class. Check supply, gain-control requirements, headphone load and PCB before choosing: although both are TI DirectPath devices, their interfaces and packages differ and they are not direct board replacements.
