High Speed FET-Input Operational Amplifier

The THS4631 is a high-speed, FET-input

op amp designed for applications requiring wideband operation, high-input impedance,

and high-power supply voltages. By providing a 210MHz gain bandwidth product, ±15V

supply operation, and 100pA input bias current, the THS4631 is capable of

simultaneous wideband transimpedance gain and large output signal swing. The fast

1000V/µs slew rate allows for fast settling times and good harmonic distortion at

high frequencies. Low current and voltage noise allow amplification of extremely

low-level input signals while still maintaining a large signal-to-noise ratio.

These high-performance characteristics

make the THS4631 an excellent choice for use as a wideband photodiode amplifier.

Photodiode output current is a prime candidate for transimpedance amplification.

Other potential applications include test and measurement systems requiring

high-input impedance, ADC and DAC buffering, high-speed integration, and active

filtering.

The THS4631 is offered in a 8-pin SOIC

(D) package, and 8-pin HSOIC (DDA) and HVSSOP (DGN) with PowerPAD™

integrated-circuit packages.