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 with a low quiescent current of only 1.45mA. The OPAx320-Q1 is well suited for low-power, single-supply applications. The combination of low noise (7nV/√Hz) and high-speed operation makes these devices excellent choices for driving sampling analog-to-digital converters (ADCs). Other applications include signal conditioning and sensor amplification. The OPAx320-Q1 features a linear input stage with zero-crossover distortion, delivering excellent common-mode rejection ratio (CMRR) of 114dB (typical) across the entire input range. The common-mode input range extends 100mV beyond the positive and negative supply voltages. Output voltage swing is typically within 10mV of the supply rails. Additionally, the OPAx320-Q1 offers a wide supply voltage range from 1.8V to 5.5V with excellent PSRR (106dB) across the entire supply range. These features make the OPAx320-Q1 suitable for high-precision, low-power applications that operate directly from batteries without regulation. The OPAx320-Q1 devices are available in an 8-pin VSSOP (DGK) package.

Features:

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: 150µV (maximum)

High common-mode rejection ratio (CMRR): 114dB

Rail-to-rail I/O

Low input bias current: 0.9pA (maximum)

Low noise: 7nV/√Hz at 10kHz

High bandwidth: 20MHz

Slew rate: 10V/µs

Quiescent current: 1.45mA per channel

Single-supply voltage range: 1.8V to 5.5V

Unity-gain stable

Small, ultra-thin VSSOP package

Applications:

Automotive

High-impedance sensor signal conditioning

Transimpedance amplifiers

Test and measurement equipment

Programmable logic controllers (PLCs)

Motor control loops

Communications

ADC and DAC input/output buffers

Active filters