TEXAS Instruments has introduced the OPA1622 audio operational amplifier which delivers high output power of up to 150 mW and extremely low distortion of -135 dB at 10 mW.
Aimed at professional audio equipment, the OPA1622 is the newest addition to the Burr-Brown Audio line, and with its small size, low power consumption and low distortion, can deliver high-fidelity audio in portable devices like headphone amplifiers, smartphones, tablets and USB audio digital-to-analogue converts.
Headphone amplifier designers can take advantage of the OPA1622 op amp's low total harmonic distortion (THD), which is 12 times better than the nearest competitor. The amplifier delivers maximum output power of up to 150 mW before clipping while maintaining the lowest THD and noise (THD+N), providing a clean signal path for professional audio applications.
Consuming a low quiescent current of 2.6-mA per channel and delivers high linear output current of 80 mARMS in a small, 3-mm-by-3-mm dual flat no-lead (DFN) package. Additionally, the increased power-supply rejection ratio (PSRR) of -97/-123 dB at 20 kHz enables low distortion from switching power supplies with no low-dropout regulator (LDO), saving board space without compromising audio performance.
The OPA1622 has a unique pinout that simplifies design and improves distortion performance. The ground-referenced enable pin is directly controllable from the low-power processor’s general-purpose input/output (GPIO) pins without level-shifting circuits. Its innovative pinout improves printed circuit board (PCB) layout and enables exceptional distortion performance at high output power.
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