Digitally-controlled wideband variable-gain amplifier

The Texas Instruments (TI) LMH6401 5GHz wideband, digitally-controlled, variable-gain amplifier (DVGA) is now stocked by Mouser. It is designed for DC to radio frequency (RF), intermediate frequency (IF), and high-speed time-domain applications. The device is an ideal analog-to-digital converter (ADC) driver for dc- or ac-coupled applications that require an automatic gain control (AGC). Noise and distortion performance is optimized to drive ultra-wideband ADCs. The amplifier has an 8dB noise figure at maximum gain and a -63dBc harmonic distortion at 1GHz for full-scale signal levels. The device supports both single- and split-supply operation for driving an ADC. A common-mode reference input pin is provided to align the amplifier output common-mode with the ADC input requirements. Applications include test and measurement, ultra-wideband ADC drivers, communications receivers, RF sampling subsystems, SAW filter buffers / drivers, defence and radar. The company also stocks the TI LMH6401 Evaluation Module (EVM) which is used to evaluate the single LMH6401, digitally-controlled variable-gain amplifier (DVGA) in a 16-lead high-performance RF package. The evaluation module is designed to quickly and easily demonstrate the functionality and performance of LMH6401 across all the gain settings.