Low Noise, Precision, 150MHz, Fully Differential Amplifier

The THS4551 fully differential amplifier

offers an easy interface from single-ended sources to the differential output required by

high-precision analog-to-digital converters (ADCs). Designed for exceptional dc accuracy,

low noise, and robust capacitive load driving, this device is well suited for data

acquisition systems where high precision is required along with the best signal-to-noise

ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC

combination.

The THS4551 features the negative rail input

required when interfacing a dc-coupled, ground-centered, source signal to a single-supply

differential input ADC. Very low dc error and drift terms support the emerging 16- to 20-bit

successive-approximation register (SAR) input requirements. A wide-range output common-mode

control supports the ADC running from 1.8-V to 5-V supplies with ADC common-mode input

requirements from 0.7 V to greater than 3.0 V.

The THS4551 device is characterized for

operation over the wide temperature range of –40°C to +125°C, and is available in 8-pin

VSSOP, 16-pin VQFN, and 10-pin WQFN packages.