OPA4325 CMOS Op-Amp

Texas Instruments' OPA4325 precision, low-voltage complementary metal-oxide semiconductor (CMOS) op-amps are optimized for ultra-low noise and wide bandwidth while operating on a low quiescent current of 650 µA.

The OPA4325 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 the wide bandwidth (10 MHz), the high slew rate (5 V/µs), and low noise (9 nV/√Hz) makes the OPA4325 an ideal successive-approximation register (SAR) analog-to-digital converter (ADC) input driver amp. The OPA4325 has a wide supply-voltage range from 2.2 V to 5.5 V with an excellent power-supply rejection ratio (PSRR) over the entire supply range making the device an ideal choice for precision, low-power applications that run directly from batteries without regulation.

The OPA4325 (quad-channel) is available in a TSSOP-14 package.