Texas Instruments OPAx620 Op Amps
Texas Instruments OPAx620 Op Amps are high-speed voltage-feedback operational amplifiers designed for current sensing and precision signal-chain applications. The family includes the single OPA620 and dual OPA2620 devices, offering unity-gain stability, rail-to-rail input and output operation, and high output-current drive.
The OPAx620 delivers 250MHz unity-gain bandwidth, 100MHz gain bandwidth, 190V/μs slew rate, and a low 5.1mA quiescent current per channel. The TI OPAx620 Op Amps also provide precision performance across temperature, including low input offset voltage, low offset drift, low input bias current, and low broadband noise.
The op amps are excellent for voltage sensing, current sensing, active filters, photodiode transimpedance amplifiers, ultrasound, optical networking, fast integrators, ADC input buffers, DAC output amplifiers, and communications. The OPA620 is housed in a 5-pin SOT-23 package, while the OPA2620 is available in an 8-pin VSSOP package, with operation specified from -40°C to +125°C for both.
Features
- Unity-gain bandwidth of 250MHz with unity-gain stability
- Wide bandwidth of 100MHz GBW
- Precision offset performance
- Input offset voltage of ±300μV maximum at 25°C
- Input offset voltage of ±1mV maximum from -40°C to +125°C
- Offset drift of 1.2μV/°C typical
- High slew rate of 190V/μs
- Low noise of 5.5nV/√Hz
- Rail-to-rail input and output operation
- High output current greater than 100mA
- Low input bias current of 3pA
- Thermal shutdown and shutdown IQ below 6μA
Applications
- Voltage sensing
- Current sensing
- Active filter
- Photodiode transimpedance amplifier
- Optical networking, tunable laser
- Ultrasound
- High-speed integrator
- Analog-to-digital converter (ADC) input buffer
- Digital-to-analog converter (DAC) output amplifier
- Communications
Specifications
- CMOS voltage-feedback architecture
- Supply voltage range of 2.5V to 5.5V, or ±1.25V to ±2.75V dual-supply operation
- Quiescent current of 5.1mA per channel
- A common-mode rejection ratio of 96dB is typical for OPA620
- Rail-to-rail output swing within 30mV of the positive and negative supplies
- Operating temperature range of -40°C to +125°C
- Package options
- OPA620 single-channel DBV SOT-23-5 package, 2.9mm x 1.6mm
- OPA2620 dual-channel DGK VSSOP-8 package, 3.0mm x 4.9mm
Application Schematic
