OPA2325 Datasheet | Texas Instruments

Features - 1 Precision with zero-crossover distortion: - Low offset voltage: 150 μV (maximum) - High CMRR: 114 d B - 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 p A - Low noise: 9 n V/√Hz at 10 k Hz - 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 - munications - Input, output ADC, and DAC buffers - Active filters Offset Voltage vs Input mon-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 C003 3 Description The OPA325, OPA2325, and OPA4325 (OPAx325) are precision, low-voltage plementary 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 monmode rejection ratio (CMRR) of typically 114 d B over the entire input range. The input mon-mode range extends 100 m V beyond the negative and positive supply rails. The output voltage typically swings within 10 m V of the rails. The zero-crossover distortion, bined with wide bandwidth (10 MHz), high slew rate (5 V/µs), and low noise (9 n V/√Hz), make the OPAx325 a very good successive-approximation register (SAR) analog-todigital converter (ADC) input driver amplifier. In addition, the OPAx325 have a wide supply-voltage range from 2.2 V to 5.5 V, with excellent powersupply rejection ratio (PSRR) over the entire supply range, making the device an excellent choice for precision, low-power applications that run directly from batteries without regulation. The OPA325 (single-channel version) is available in the SOT23-5 package. The OPA2325 (dual-channel version) is offered in SO-8 and MSOP-8...