TPA6138A2PWR
| Parameters | |
|---|---|
| Series | DirectPath™ |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Type | Class AB |
| Output Type | Headphones, 2-Channel (Stereo) |
| Supplier Device Package | 14-TSSOP |
| Voltage - Supply | 3V ~ 3.6V |
| Max Output Power x Channels @ Load | 40mW x 2 @ 32Ohm |
| Features | Depop, Differential Inputs, Mute, Short-Circuit Protection |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | TPA6138 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,000 |
| ECCN | EAR99 |
| HTSUS | 8542.33.0001 |
TPA6138A2PWR Stereo Headphone Amplifier Class AB
The TPA6138A2PWR is a high-performance stereo headphone amplifier from Texas Instruments, built with TI's patented DirectPath™ technology to enable ground-referenced output and eliminate bulky output DC-blocking capacitors, reducing PCB size and system cost. It features pop-free on/off control, adjustable gain via external resistors, differential input, and single-ended output, delivering clean audio with ultra-low distortion. Housed in a compact 14‑TSSOP package, this device supports 3.0–3.6V single-supply operation and drives up to 40mW into 32Ω loads, making it ideal for space‑constrained portable and consumer audio designs.
TPA6138A2PWR Audio Amplifier Specifications
Operating from a 3.0V to 3.6V supply, the TPA6138A2PWR offers THD+N below 0.01% at 10mW output, SNR over 90dB, and PSRR of 80dB for excellent noise rejection. It supports gain from ±1V/V to ±10V/V, features under‑voltage lockout and active mute, and includes ±8kV IEC ESD protection for robust reliability. The device runs across −40°C to 85°C industrial temperature range, draws low quiescent current, and is fully RoHS‑compliant, suitable for battery‑powered and cost‑sensitive audio systems.
Alternative audio amplifier components
●TPA6139A2PWR: Direct pin‑compatible upgrade from TI with similar performance and enhanced noise specs for premium audio designs.
● NCS2632DTBR2G: ON Semiconductor stereo headphone amp in 14‑TSSOP, offering comparable drive and low‑distortion performance as a drop‑in alternative.
● MAX97202: Maxim low‑noise stereo amplifier with capacitorless output, matching gain range and audio quality for portable applications.
● TPA6133A2: TI DirectPath headphone amp with higher output power, suitable for designs needing stronger drive while maintaining small form factor.
