Dual voltage-feedback amplifier for high-speed signal chains
The THS4032ID is a dual-channel voltage-feedback operational amplifier from Texas Instruments, designed for applications requiring wide bandwidth and fast slew rate in a compact SOIC-8 footprint. With a 100V/µs slew rate and 100 MHz -3 dB bandwidth, this part suits video distribution, ADC driver stages, and high-speed data acquisition front-ends where settling time and harmonic distortion matter. The gain-bandwidth product of 120 MHz means the closed-loop bandwidth at a gain of 10 is approximately 12 MHz, which is the practical limit for the signal path before the amplifier's open-loop response rolls off.
Supply range and power budget
Operating from a single supply of 9 V to 32 V (or split supplies of ±4.5 V to ±16 V), the THS4032ID fits into common industrial and test-equipment rails without needing an extra regulator. Each channel draws 8.5 mA quiescent supply current, totalling 17 mA for the dual package — a reasonable overhead for the 100 MHz bandwidth class, but worth budgeting in multi-channel boards where thermal density accumulates. The output can source or sink 90 mA per channel, enough to drive a 50-ohm back-terminated cable or a 100-ohm ADC input stage directly without an external buffer.
Input characteristics and DC precision
Input bias current is 3 µA typical — a bipolar input stage, so the THS4032ID is not the first choice for high-impedance sources above 10 kΩ unless you account for the voltage drop across the source resistance. Input offset voltage is 500 µV typical, giving reasonable DC accuracy for a high-speed amplifier. In a precision DC-coupled path, you may need to null the offset or plan for it in the system error budget.
Package, temperature grade, and compliance
Housed in an 8-pin SOIC (0.154" body width, 3.90 mm), the THS4032ID is surface-mount ready for standard PCB assembly. The supplier device package is 8-SOIC. Rated for -40°C to +85°C operating temperature, it covers industrial environments — control cabinets, test racks, and outdoor telecom shelters that stay within that range.
Sourcing and availability
The THS4032ID is an active, in-production part from Texas Instruments, available through authorized distribution channels.