OPA4325

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design OPA325, OPA2325, OPA4325 SBOS637D – OCTOBER 2016 – REVISED JUNE 2019 OPAx325 Precision, 10-MHz, Low-Noise, Low-Power, RRIO, CMOS Operational Amplifiers 1 Features 1 Precision with zero-crossover distortion: – Low offset voltage: 150 μV (maximum) – High CMRR: 114 dB – Rail-to-rail I/O Wide bandwidth: 10 MHz Quiescent current: 650 μA/ch Single-supply voltage range: 2.2 V to 5.5 V Low input bias current: 0.2 pA Low noise: 9 nV/√Hz at 10 kHz Slew rate: 5 V/μs Unity-gain stable 2 Applications High-Z sensor signal conditioning Transimpedance amplifiers Test and measurement equipment Programmable logic controllers (PLCs) Motor control loops Communications Input, output ADC, and DAC buffers Active filters Offset Voltage vs Input Common-Mode Voltage VOS ( V) 150 125 100 75 50 25 0 ±25 ±50 ±75 ±100 ±125 ±150 ±3 VCM = ±2.85 V ±2 ±1 0 VCM (V) VCM = 2.85 V 12 3 C003 3 Description The OPA325, OPA2325, and OPA4325 (OPAx325) are precision, low-voltage complementary metal-oxide semiconductor (CMOS) operational amplifiers optimized for very low noise and wide bandwidth, while operating on a low quiescent current of only 650 μA. The OPAx325 feature a linear input stage with zerocrossover distortion that delivers excellent commonmode rejection ratio (CMRR) of typically 114 dB over the entire input range. The input common-mode range extends 100 mV beyond...