What this differential amplifier does on your board
The Texas Instruments THS4130IDGKR is a fully differential amplifier — it takes a single-ended or differential input and produces a balanced differential output. That makes it the natural driver for high-resolution SAR and pipeline ADCs, where a clean differential signal rejects common-mode noise and doubles the voltage swing into the converter. With a 150 MHz -3 dB bandwidth and a 52 V/µs slew rate, it can handle IF sampling in communications receivers, video distribution, or wideband instrumentation without introducing slew-rate distortion on fast edges. The single-channel device operates from a 4 V to 33 V supply span, so it works equally well on a 5 V single rail or ±15 V industrial supplies.
Dynamic specs that matter for signal integrity
The 52 V/µs slew rate is the headline number for driving capacitive loads like ADC inputs — it means the output can swing 5 V in under 100 ns, keeping the signal edge clean and avoiding the slew-induced nonlinearity that shows up as harmonic distortion in the digitised result. The 225 MHz gain-bandwidth product tells you the open-loop gain stays high well into the megahertz range, so closed-loop gain accuracy holds up at frequencies where slower amplifiers would start to droop. Input bias current is 2 µA, typical for a bipolar-input stage; that matters when your source impedance is high, because the bias current develops an offset voltage across the source resistance. The 200 µV input offset voltage is tight enough for most 12- to 14-bit signal chains without a trim.
The 4 V minimum supply means you can run this part from a single 5 V rail and still have headroom for the input and output stages. The 33 V maximum covers the full ±15 V industrial supply range, so it fits into existing ±15 V analog backplanes without a regulator change. Supply current is 12.3 mA typical — modest for a 150 MHz amplifier, but worth checking against your total power budget if you are running multiple channels. Each channel can deliver 85 mA of output current, enough to drive a 50 Ω back-terminated cable or a 100 Ω differential ADC input with plenty of margin.
Package and temperature grade for the build
The THS4130IDGKR comes in an 8-VSSOP package (the DGKR suffix), which is the same 3.00 mm × 3.00 mm footprint as the standard MSOP-8. It is a surface-mount part, so it reflows with the rest of the board.