Texas Instruments OPA814 Unity-Gain Stable Voltage-Feedback Op Amp
Texas Instruments OPA814 Unity-Gain Stable Voltage-Feedback Operational Amplifier (Op Amp) is designed for high-speed, high-precision, and wide-dynamic-range applications. The OPA814 has a low-noise junction gate field-effect transistor (JFET) input stage with a wide gain bandwidth of 250MHz and a supply range from 6V to 12.6V. The fast slew rate of 750V/µs allows a wide large-signal bandwidth and low distortion when used as a high-impedance buffer in high-speed digitizers, active probes, and other test and measurement applications.
The Texas Instruments OPA814 offers an extremely low input offset voltage of ±250µV and offset voltage drift of ±3.5µV/°C. The combination of picoamperes of input bias current and low input voltage noise (5.3nV/√ Hz) makes the OPA814 an excellent wideband transimpedance amplifier in optical test and communication equipment and medical and scientific instrumentation. The OPA814 is available in an 8-pin SOIC package. This device is specified to operate over the industrial temperature range of –40°C to +85°C.
Features
- Wide bandwidth
- 250MHz gain-bandwidth product
- 600MHz bandwidth (G = 1 V/V)
- 200MHz large-signal bandwidth (2VPP)
- 750V/µs slew rate
- High precision
- 250µV (maximum) input offset voltage
- 3.5µV/°C (maximum) input offset voltage drift
- 5.3nV/√Hz input voltage noise
- 2pA input bias current
- Low distortion (RL = 100Ω, VO = 2VPP)
- HD2, HD3 at 10MHz = –75dBc, –85dBc
- 6V to 12.6V supply range
- 16mA supply current
- Performance upgrade to OPA656
Applications
- High-speed data acquisition (DAQ)
- Active probes
- Oscilloscopes
- Optical communication modules
- Test and measurement front-ends
- Medical and chemical analyzers
- Optical time-domain reflectometry (OTDR)
Related Development Tools
Texas Instruments DEM-OPA-DTK-EVM Evaluation Module
A demonstration fixture facilitating designers to evaluate the operation and performance of op amps.
Texas Instruments DEM-OPA-SO-1A SO-8 Generic Evaluation Module
Generic unpopulated PCB for single operational amplifiers in 8-lead SOIC (D) package.