The AD8502/AD8504 are low power, precision CMOS operational amplifiers featuring a maximum supply current of 1 μA. The AD8502/AD8504 have a maximum offset voltage of 3 mV, single-supply or dual-supply operation, rail-to-rail input and output, no phase reversal, and are unity gain stable. The product is suitable for portable equipment, remote sensors, low power filters, threshold detectors, and current sensing applications.
The AD8502 and AD8504 are 1 pA micropower CMOS operational amplifiers offering rail‑to‑rail input and output, single‑supply operation from +1.8 V to +5.5 V (or dual‑supply +0.9 V to +2.75 V), and a typical offset voltage of 3 mV. Their low power consumption and high accuracy make them suitable for battery‑powered devices such as portable equipment, remote sensors, low‑power filters, and current‑sensing circuits.
The devices are specified over an industrial temperature range of –40 °C to +85 °C (extended to –40 °C to +125 °C) and are available in an 8‑lead SOT‑23 package (AD8502) or a 14‑lead TSSOP package (AD8504). Detailed electrical characteristics, absolute maximum ratings, and typical performance graphs are provided in the datasheet.
| Supply current | 1 pA maximum per amplifier |
|---|---|
| Offset voltage | 3 mV maximum |
| Input voltage range | 0 V to 5.0 V (single‑supply) or 0 V to 1.8 V (low‑voltage version) |
| Gain‑bandwidth product | 7 kHz |
| Phase margin | 60 degrees |
| Operating temperature range | –40 °C to +85 °C (industrial), –40 °C to +125 °C (extended) |
The device draws about 1 pA maximum per amplifier.
It can operate from a single‑supply voltage of +1.8 V to +5.5 V or a dual‑supply of +0.9 V to +2.75 V.
The offset voltage is specified as 3 mV maximum.
It is specified for an industrial range of –40 °C to +85 °C and an extended range of –40 °C to +125 °C.