This document is about THS4031 and THS4032, which are ultralow voltage noise, high-speed voltage feedback amplifiers that are ideal for applications requiring low voltage noise, including communications and imaging. The single amplifier THS4031 and the dual amplifier THS4032 offer very good ac performance with 100-MHz bandwidth (G = 2), 100-V/ms slew rate, and 60-ns settling time (0.1%). The THS4031 and THS4032 are unity gain stable with 275-MHz bandwidth. These amplifiers have a high drive capability of 90 mA and draw only a small amount of current.
The THS4031 (single) and THS4032 (dual) are ultralow‑voltage‑noise, high‑speed voltage‑feedback amplifiers designed for applications such as communications and imaging. They provide 100 MHz bandwidth, 100 V/µs slew rate, and a typical 90 mA output‑current capability while drawing only 8.5 mA per channel.
The devices are available in several packages (SOIC, MSOP, PowerPAD™, JG, FK) and support a wide supply range (dual +4.5 V to +16 V, single 9 V to 32 V). Detailed electrical characteristics, absolute‑maximum ratings, and recommended operating conditions are provided for design engineers.
| Voltage noise density | 1.6 nV/√Hz |
|---|---|
| Bandwidth (‑3 dB) | 100 MHz |
| Slew rate | 100 V/µs |
| Total harmonic distortion (THD) at 1 MHz | -90 dBc |
| Output current drive (typical) | 90 mA |
| Supply voltage range (dual) | +4.5 V to +16 V |
| Supply voltage range (single) | 9 V to 32 V |
| Input offset voltage (typical) | 0.5 mV |
| Maximum junction temperature | 150 °C |
The amplifiers have an ultralow voltage‑noise density of 1.6 nV/√Hz.
Each amplifier can drive up to 90 mA of output current (typical).
The small‑signal bandwidth is 100 MHz (‑3 dB).