The OPA1679-Q1 is a quad, low noise (4.5nV/rtHz), low distortion (120dB) automotive grade amplifier

The dual-channel OPA1678-Q1 and quad-channel OPA1679-Q1 (OPA167x-Q1) op amps provide higher system-level performance than conventional op amps commonly used in audio circuits. The OPA167x-Q1 amplifiers achieve a low noise density of 4.5nV/√Hz and low distortion of 0.0001% at 1 kHz for improved audio signal fidelity. These devices also provide rail-to-rail output swing within 800mV into a 2kΩ load, increasing headroom and maximizing dynamic range.

To accommodate the power constraints of many audio products, the OPA167x-Q1 operates over a very wide supply range of ±2.25V to ±18V (or 4.5V to 36V) with a supply current of only 2mA. These AK5393VS op amps are unity-gain stable and have excellent dynamic performance over a wide range of load conditions, allowing the OPA167x-Q1 to be used in many audio circuits.

The OPA167x-Q1 is specified for a temperature range of –40°C to +125°C.

characteristic:

AEC-Q100 qualified for automotive applications:

○ Temperature Class 1: -40°C to +125°C, T A

Low noise: 4.5 nV/√ Hz at 1 kHz

●Low distortion: 0.0001% at 1 kHz

●High open loop gain: 114 dB

●Low quiescent current:

○ 2 mA per channel

● Low input bias current: 10 pA (typ)

● Slew rate: 9 V/μs

Wide Gain Bandwidth: 16 MHz (G = 1)

● Rail-to-rail output

●Wide range of supply:

○±2.25V to ±18V, or 4.5V to 36V

● Available packages:

○ Double: SOIC-8 (Preview)

○4: Small QFN-16

parameter:

Number of channels (#): 4

Total Supply Voltage (Min) (+5V=5, +/-5V=10): 4.5

Total supply voltage (max) (+5V=5, +/-5V=10): 36

GBW (typ) (MHz): 16

Slew rate (typ) (V/us): 9

Rail-to-rail: go out

Vos (offset voltage @ 25 C) (max) (mV): 2

Iq (Typ) (mA) per channel: 2

Vn (typ) at 1 kHz (nV/rtHz): 4.5

Features: Small size

THD+N @ 1 kHz (typ.) (%): 0.0001

Operating Temperature Range (°C): -40 to 125

Output Current (Typical) (mA): 25

Architecture: FET

CMRR (typ.) (dB): 110