1 Features

• Low noise: 3.3nV/√Hz at 1kHz

• Low distortion: 0.00006% at 1kHz

• Low quiescent current:

1.5mA per channel

• Slew rate: 17V/μs

• Wide gain bandwidth: 22MHz (G = +1)

• Unity gain stable

• Rail-to-rail output

• Wide supply range:

±1.5V to ±18V or 3V to 36V

• Dual and quad versions available

• Small package sizes:

Dual: SOIC-8 and VSSOP-8

Quad: SOIC-14 and TSSOP-14

2 Applications

• USB and firewire audio systems

• Analog and digital mixers

• Portable recording systems

• Audio effects processors

• High-end A/V receivers

• High-end DVD and Blu-Ray™ players

• High-end car audio

3 Description

The dual OPA1662 and quad OPA1664 (OPA166x)

series of bipolar-input SoundPlus™ audio operational

amplifiers achieve a low 3.3nV/√Hz noise density

with an ultra-low distortion of 0.00006% at 1kHz.

The OPA166x series of op amps offer rail-to-rail

output swing to within 600mV with 2kΩ load, which

increases headroom and maximizes dynamic range.

These devices also have a high output drive capability

of ±30mA.

These devices operate over a very wide supply range

of ±1.5V to ±18V, or 3V to 36V, on only 1.5mA of

supply current per channel. The OPA166x op amps

are unity-gain stable and provide excellent dynamic

behavior over a wide range of load conditions.

These devices also feature completely independent

circuitry for lowest crosstalk and freedom from

interactions between channels, even when overdriven

or overloaded.

The OPA166x are specified from –40°C to +85°C.