The THS4631 is a high-speed, FET-input operational amplifier designed for applications requiring wideband operation, high-input impedance, and high-power supply voltages. By providing a 210-MHz gain bandwidth product, ±15-V supply operation, and 100-pA input bias current, the THS4631 is capable of simultaneous wideband transimpedance gain and large output signal swing. The fast 1000 V/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.
The characteristics of the THS4631 make it ideally suited for use as a wideband photodiode amplifier. Photodiode output current is a prime candidate for transimpedance amplification as shown below. 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 an 8-pin SOIC (D), and the 8-pin SOIC (DDA) and MSOP (DGN) with PowerPAD™ package.
|Part number||Order||Architecture||Number of channels (#)||Total supply voltage (Min) (+5V=5, +/-5V=10)||Total supply voltage (Max) (+5V=5, +/-5V=10)||GBW (Typ) (MHz)||BW @ Acl (MHz)||Acl, min spec gain (V/V)||Slew rate (Typ) (V/us)||Vn at flatband (Typ) (nV/rtHz)||Vn at 1 kHz (Typ) (nV/rtHz)||Iq per channel (Typ) (mA)||Vos (offset voltage @ 25 C) (Max) (mV)||Rail-to-rail||Rating||Operating temperature range (C)||Package Group||Package size: mm2:W x L (PKG)||CMRR (Typ) (dB)||Input bias current (Max) (pA)||Offset drift (Typ) (uV/C)||Output current (Typ) (mA)||2nd harmonic (dBc)||3rd harmonic (dBc)||@ MHz|
FET / CMOS Input
|1||10||32||210||325||1||1000||7||7||11.5||0.5||No||Catalog||-40 to 85||
HVSSOP | 8
SO PowerPAD | 8
SOIC | 8
8HVSSOP: 15 mm2: 4.9 x 3 (HVSSOP | 8)
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)