The OPA4325 precision low-voltage complementary metal-oxide-semiconductor (CMOS) op amp is optimized for ultralow noise and wide bandwidth while operating at a low quiescent current of 650 μA.

The OPA4325 employs a linear input stage with zero crossover distortion and has an excellent common-mode rejection ratio (CMRR) of typically 114dB over the full input range. This input common-mode range extends 100 mV over the positive and negative supply rails. The output voltage typically swings within 10 mV of the supply rails.

Zero crossover distortion combined with wide bandwidth (10 MHz), high slew rate (5 V/μs), and low noise (9 nV/√Hz) make the OPA4325 an ideal successive approximation register (SAR) analog-to-digital converter (ADC) ) of the input driver amplifier. In addition, the OPA4325 has a wide supply voltage range of 2.2 V to 5.5 V and excellent power supply rejection ratio (PSRR) over the entire supply range, making the device suitable for high precision, low power applications in unregulated direct battery operation.

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

characteristic

High accuracy with zero crossover distortion:

Low offset voltage: 150 μV max

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

application

High Z Sensor Signal Conditioning

Transimpedance amplifier

Test and Metrology Equipment

Programmable Logic Controller (PLC)

Motor Control Loop

communication

Input, output ADC and DAC buffers

Active filter

OPA4325IPWR, DIP-ADAPTER-EVM, DUAL-DIYAMP-EVM, OPAMPEVM-MSOPTSSOP, OPAMPEVM-PDIP,

OPAMPEVM-SOT23, OPAMPEVM-SOIC, OPAMPEVM-SOT23SHDN