TPA6132A2是TI公司的一款耳机放大器产品，TPA6132A2是具有杂音抑制功能的 25mW DirectPath? 立体声耳机放大器 (TPA6132)，本页介绍了TPA6132A2的产品说明、应用、特性等，并给出了与TPA6132A2相关的TI元器件型号供参考。
TPA6132A2 - 具有杂音抑制功能的 25mW DirectPath? 立体声耳机放大器 (TPA6132) - 耳机放大器 - 低功耗放大器 - TI公司（Texas Instruments，德州仪器）
- Patented DirectPath™ Technology Eliminates Need for DC-Blocking Capacitors
- Outputs Biased at 0V
- Excellent Low Frequency Fidelity
- Active Click and Pop Suppression
- 2.1mA Typical Supply Current
- Fully Differential or Single-Ended Inputs
- Built-In Resistors Reduces Component Count
- Improves System Noise Performance
- Constant Maximum Output Power from 2.3 V to 5.5 V Supply
- Simplifies Design to Prevent Acoustic Shock
- Improved RF Noise Immunity
- MicrosoftTM Windows VistaTM Compliant
- High Power Supply Noise Rejection
- 100 dB PSRR at 217 Hz
- 90 dB PSRR at 10 kHz
- Wide Power Supply Range: 2.3V to 5.5V
- Gain Settings: –6dB, 0dB, 3dB, and 6dB
- Short-Circuit and Thermal-Overload Protection
- ±8kV HBM ESD Protected Outputs
- Small Package Available
- 16-Pin, 3mm × 3mm Thin QFN
- Smart Phones / Cellular Phones
- Notebook Computers
- CD / MP3 Players
- Portable Gaming
The TPA6132A2 (sometimes referred to as TPA6132) is a DirectPath™ stereo headphone amplifier that eliminates the need for external dc-blocking output capacitors. Differential stereo inputs and built-in resistors set the device gain, further reducing external component count. Gain is selectable at –6dB, 0dB, 3dB or 6dB. The amplifier drives 25mW into 16Ω speakers from a single 2.3V supply. The TPA6132A2 (TPA6132) provides a constant maximum output power independent of the supply voltage, thus facilitating the design for prevention of acoustic shock.
The TPA6132A2 features fully differential inputs to reduce system noise pickup between the audio source and the headphone amplifier. The high power supply noise rejection performance and differential architecture provides increased RF noise immunity. For single-ended input signals, connect INL+ and INR+ to ground.
The device has built-in pop suppression circuitry to completely eliminate disturbing pop noise during turn-on and turn-off. The amplifier outputs have short-circuit and thermal-overload protection along with ±8kV HBM ESD protection, simplifying end equipment compliance to the IEC 61000-4-2 ESD standard.
The TPA6132A2 operates from a single 2.3V to 5.5V supply with 2.1mA of typical supply current. Shutdown mode reduces supply current to less than 1μA.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPA6132A2 | WQFN (16) | 3.00 mm x 3.00 mm |
