The OPA1622 is a dual‑channel, bipolar‑input audio op‑amp with ultra‑low noise, low THD+N, wide supply range and high output drive.
OPA1622 is a dual‑channel, bipolar‑input audio operational amplifier designed for high‑fidelity applications. It provides ultra‑low input noise (2.8 nV/√Hz at 1 kHz), very low total harmonic distortion plus noise (–119 dB), a 32 MHz gain‑bandwidth product, and high output current capability.
The device operates from ±2 V to ±18 V, draws only 2.6 mA per channel in standby, supports capacitive loads over 600 pF, and includes a shutdown mode that reduces standby current below 5 µA. It is suited for headphone drivers, professional audio equipment, mixed‑signal consoles, audio test equipment, high‑end Blu‑ray players and A/V receivers. This manual is written in Chinese.
| Supply voltage range | ±2 V to ±18 V |
|---|---|
| Input voltage noise density (1 kHz) | 2.8 nV/√Hz |
| Total harmonic distortion + noise (THD+N) | –119 dB |
| Output short‑circuit current | +145 /–130 mA |
The OPA1622 can be powered from a single supply of 4 V to 36 V or from dual supplies of ±2 V to ±18 V.
The input voltage noise density is 2.8 nV/√Hz at 1 kHz.
The device achieves a total harmonic distortion plus noise of –119 dB.
It can source up to +145 mA and sink up to –130 mA per channel.