OP Amp Single Volt Fdbk ±6V 5-Pin SOT-23 T/R

The OPA656 combines a very wideband, unity-gain stable, voltage-feedback op amp with a FET-input stage to offer an ultra high dynamic-range amplifier for ADC (Analog-to-Digital Converter) buffering and transimpedance applications. Extremely low DC errors give good precision in optical applications. The high unity-gain stable bandwidth and JFET input allows exceptional performance in high-speed, low-noise integrators. The high input impedance and low bias current provided by the FET input is supported by the ultra-low 7nV/vHz input voltage noise to achieve a very low integrated noise in wideband photodiode transimpedance applications. Broad transimpedance bandwidths are achievable given the OPA656’s high 230MHz gain bandwidth product. As shown below, a –3dB bandwidth of 1MHz is provided even for a high 1MO transimpedance gain from a 47pF source capacitance.

500MHz UNITY-GAIN BANDWIDTH

LOW INPUT BIAS CURRENT: 2pA

LOW OFFSET AND DRIFT: ±0.25mV, ±2µV/°C

LOW DISTORTION: 74dB SFDR at 5MHz

HIGH OUTPUT CURRENT: 70mA

LOW INPUT VOLTAGE NOISE: 7nV/vHz

APPLICATIONS

• WIDEBAND PHOTODIODE AMPLIFIERS
• SAMPLE-AND-HOLD BUFFERS
• CCD OUTPUT BUFFERS
• ADC INPUT BUFFERS
• WIDEBAND PRECISION AMPLIFIERS
• TEST AND MEASUREMENT FRONT ENDS