1 Features
1• Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• Precision with Zero-Crossover Distortion:
– Low Offset Voltage: 150 μV (max)
– High CMRR: 114 dB
– Rail-to-Rail I/O
• Low Input Bias Current: 0.9 pA (max)
• Low Noise: 7 nV/√Hz at 10kHz
• Wide Bandwidth: 20 MHz
• Slew Rate: 10 V/μs
• Quiescent Current: 1.45 mA/ch
• Single-Supply Voltage Range: 1.8 to 5.5 V
• Unity-Gain Stable
• Small VSSOP Package

2 Applications
• Automotive
• High-Z Sensor Signal Conditioning
• Transimpedance Amplifiers
• Test and Measurement Equipment
• Programmable Logic Controllers (PLCs)
• Motor Control Loops
• Communications
• Input and Output ADC and DAC Buffers
• Active Filters

3 Description
The OPA320-Q1 and OPA2320-Q1 (OPAx320-Q1)
devices are a new generation of precision low-voltage
CMOS operational amplifiers (op amps) optimized for
very low noise and wide bandwidth. These devices
operate on a low quiescent current of only 1.45 mA.
The OPAx320-Q1 are an excellent choice for lowpower,
single-supply applications. Low-noise (7
nV/√Hz) and high-speed operation also makes these
devices an excellent choice for driving sampling
analog-to-digital converters (ADCs). Other
applications include signal conditioning and sensor
amplification.
The OPAx320-Q1 feature a linear input stage with
zero-crossover distortion that delivers excellent
common-mode rejection ratio (CMRR) of 114 dB
(typical) over the full input range. The input commonmode
range extends 100 mV beyond the negative
and positive supply rails. The output voltage typically
swings within 10 mV of the rails.
In addition, the OPAx320-Q1 have a wide supply
voltage range from 1.8 V to 5.5 V, with excellent
PSRR (106 dB) over the entire supply range. These
features make the OPAx320-Q1 suitable for
precision, low-power applications that run directly
from batteries without regulation.
The OPAx320-Q1 device is available in an 8-pin
VSSOP (DGK) package.