1 Features

1• High-Fidelity Sound Quality

• Ultralow Noise: 2.8 nV/√Hz at 1 kHz

• Ultralow Total Harmonic Distortion + Noise:

–119 dB THD+N (142 mW/Ch into 32 Ω/Ch)

• Wide Gain Bandwidth Product:

32 MHz (G = +1000)

• High Slew Rate: 10 V/μs

• High Capacitive-Load Drive Capability: > 600 pF

• High Open-Loop Gain: 136 dB (600-Ω Load)

• Low Quiescent Current: 2.6 mA per Channel

• Low-Power Shutdown Mode With Reduced Pop

and Click Noise: 5 μA per Channel

• Short-Circuit Protection

• Wide Supply Range: ±2 V to ±18 V

• Available in small VSON-10 μPackage

2 Applications

• High-Fidelity (HiFi) Headphone Drivers

• Professional Audio Equipment

• Analog and Digital Mixing Consoles

• Audio Test and Measurement

• High-End Blu-ray™ Players

• High-End Audio and Video (A/V) Receivers

3 Description

The OPA1622, dual, bipolar-input, SoundPlus™

audio operational amplifier achieves a very low,

2.8-nV/√Hz noise density with an ultralow THD+N of

–119.2 dB at 1 kHz and drives a 32-Ω load at 100-

mW output power. The OPA1622 offers extremelyhigh

ac PSRR and CMRR specifications that

eliminate noise from power supplies, making the

OPA1622 ideal for use in portable-audio applications.

This device also has a high output-drive capability of

+145 mA per –130 mA.

The OPA1622 operates over a very wide supply

range of ±2 V to ±18 V, on only 2.6 mA of supply

current per channel. The OPA1622 op amp is unitygain

stable and provides excellent dynamic behavior

over a wide range of load conditions. The OPA1622

includes a shutdown mode, allowing the amplifiers to

be switched from normal operation to a standby

current that is typically less than 5 μA. This shutdown

feature is specifically designed to eliminate click and

pop noise when transitioning into or out of shutdown

mode.

The OPA1622 features a unique internal layout for

lowest crosstalk, and freedom from interactions

between channels, even when overdriven or

overloaded. This device is specified from –40°C to

+125°C.