The OPA320 (single) and OPA2320 (dual) are a new generation of precision, low-voltage CMOS operational amplifiers optimized for very low noise and wide bandwidth while operating on a low quiescent current of only 1.45mA.
The OPA320 series is ideal for low-power, single-supply applications. Low-noise (7nV/√Hz ) and high-speed operation also make them well-suited for driving sampling analog-to-digital converters (ADCs). Other applications include signal conditioning and sensor amplification.
The OPA320 features a linear input stage with zero-crossover distortion that delivers excellent common-mode rejection ratio (CMRR) of typically 114dB over the full input range.The input common-mode range extends 100mV beyond the negative and positive supply rails. The output voltage typically swings within 10mV of the rails.
In addition, the OPAx320 have a wide supply voltage range from 1.8V to 5.5V with excellent PSRR (106dB) over the entire supply range, making them suitable for precision, low-power applications that run directly from batteries without regulation.
The OPA320 (single version) is available in a SOT23-5 package; the OPA320S shut-down single version is available in an SOT23-6 package. The dual OPA2320 is offered in SO-8, MSOP-8, and DFN-8 packages, and the OPA2320S (dual with shut-down) in an MSOP-10 package.