900 kHz GBW, 58 µA per channel — the battery-life trade-off
The TSV732IQ2T is a dual CMOS op-amp from STMicroelectronics that balances a 900 kHz gain-bandwidth product against a 58 µA supply current per channel — the 0.35 V/µs slew rate is the speed ceiling for a given signal amplitude, so a 1 V peak output swing settles in about 2.9 µs, which keeps the loop closed for sensor conditioning below 100 kHz.
Parametric profile: 68 mA output drive, 1 pA bias
Each channel delivers 68 mA output current — enough to drive a 32-ohm headphone or the ADC reference buffer, but the 900 kHz GBW limits the closed-loop bandwidth at higher gains; at a gain of 10 the usable signal bandwidth is about 90 kHz. The 1 pA typical input bias current makes this CMOS amplifier suitable for high-impedance sources such as photodiode transimpedance stages or pH probe buffers, where a bipolar-input op-amp would inject tens of nanoamps of error.