OPA320AQDBVRQ1

The OPA320-Q1 and OPA2320-Q1 (OPAx320-Q1) are next-generation precision low-voltage CMOS op amps optimized for ultra-low noise and wide bandwidth. These devices operate at a low quiescent current of only 1.45mA. The OPAx320-Q1 is ideal for low-power, single-supply applications. The low noise (7nV/√Hz) and high-speed operation also make these devices well-suited for driving sampling ADCs. Additional applications include signal conditioning and sensor amplification. The OPAx320-Q1 features a linear input stage with zero crossover distortion, delivering an excellent typical CMRR of 114dB across the entire input range. The common-mode input range extends 100mV beyond each supply rail. Output voltage swing is typically within 10mV of the supply rails. In addition, the OPAx320-Q1 offers a wide supply voltage range of 1.8V to 5.5V with excellent PSRR (106dB) across the entire supply voltage range. These characteristics make the OPAx320-Q1 suitable for high-precision, low-power applications running directly from a battery without regulation.

Applications

• Automotive high-impedance sensor signal conditioning
• Transimpedance amplifier
• Test and measurement equipment
• Programmable Logic Controller (PLC)
• Motor control loop
• Communication input and output
• ADC and DAC buffers
• Active filters

Key features

• Qualified for automotive applications with the following AEC-Q100 results:
• Device temperature grade 1: ambient operating temperature range -40°C to 125°C
• Device HBM ESD classification level 2
• Device CDM ESD classification level C4B
• Precision with no crossover distortion: low offset voltage: 150μV (maximum)
• High CMRR: 114dB
• Rail-to-rail I/O
• Low input bias current: 0.9pA (maximum)
• Low noise: 7nV/√Hz at 10kHz
• High bandwidth: 20MHz
• Slew rate: 10V/μs
• Quiescent current: 1.45mA per channel
• Single-supply voltage range: 1.8V to 5.5V
• Unity-gain stable
• Small VSSOP package