The THS4567 device is a unique fully differential amplifier that features an input common-mode control loop in addition to the output common-mode control loop typically found in all fully differential amplifiers. The THS4567 device has a high impedance CMOS input stage with a very low input bias current. The independent input and output common-mode control along with the high impedance CMOS inputs make the THS4567 device an ideal high-gain, low-noise, fully-differential transimpedance amplifier.

The input common-mode loop of the THS4567 device may be disabled by setting the ICM_EN pin below its turnoff threshold voltage, turning it into a standard fully differential amplifier with output common-mode control only. The THS4567 device operates over a wide power supply voltage range from 3.3 V to 5.5 V, which makes this device an excellent choice for driving differential ADCs and buffering DAC outputs.

This device features a low-power mode with a unique active pullup resistor that improves EMI reliability of the shutdown pin when left floating. The AMP_EN and ICM_EN pins draw very little bias current when the logic voltage is outside the switching threshold region. Within the switching threshold region, the bias current increases, especially close to the transition region. The increased bias current prevents the logic from inadvertently switching in the presence of EMI.