160 kHz GBW, 7 µA supply — the low-power sensor amp
The TLV27L1CD: With a gain-bandwidth product of 160 kHz and a supply current of just 7 µA, this part is suited for conditioning slow-changing signals from thermocouples, strain gauges, or photodiodes in battery-powered or always-on systems.
The 7 µA supply current is the defining spec for this op-amp. In a multi-channel sensor front-end, each TLV27L1CD adds only 7 µA to the system budget, which is critical for designs targeting years of operation from a coin cell or energy harvester. The 400 µA output current per channel is modest but sufficient to drive the input of an ADC or a low-power comparator. The input bias current of 1 pA and input offset voltage of 500 µV are typical for a CMOS-input stage, adequate for DC-accurate measurements at low bandwidth.
Active lifecycle — no end-of-life planning needed
For dual-sourcing or higher-speed requirements, the TLV9351IDCKR offers a 3.5 MHz GBW and 20 V/µs slew rate, but at a higher supply current — a trade-off worth evaluating if the application can tolerate the power increase.