The OPA2325 is a dual, precision, low-voltage complementary metal-oxide semiconductor
(CMOS) operational amplifier optimized for very low noise and wide bandwidth while operating on a
low quiescent current of only 650 µA.
The OPA2325 features a linear input stage with zero-crossover distortion that delivers
excellent common-mode rejection ratio (CMRR) of typically 114 dB over the entire input range. The
input common-mode range extends 100 mV beyond the negative and positive supply rails. The output
voltage typically swings within 10 mV of the rails.
The zero-crossover distortion, combined with wide bandwidth (10 MHz), high slew rate (5
V/µs), and low noise (9 nV/√Hz), make the OPA2325 a very good
successive-approximation register (SAR) analog-to-digital converter (ADC) input driver amplifier.
In addition, the OPA2325 has a wide supply-voltage range from 2.2 V to 5.5 V with excellent
power-supply rejection ratio (PSRR) over the entire supply range, making the device suitable for
precision, low-power applications that run directly from batteries without regulation.
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