The document describes the features and characteristics of the low power, 3.6 MHz, low noise, rail-to-rail output operational amplifiers ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4.
The ADA4691‑2, ADA4691‑4, ADA4692‑2 and ADA4692‑4 are low‑power, rail‑to‑rail output operational amplifiers offering 3.6 MHz bandwidth, 16 nV/√Hz noise and very low input bias currents. They are suited for photodiode amplifiers, sensor interfaces, portable audio, communications, ADC drivers and active filters.
These devices are offered in several compact packages, including 2 mm × 2 mm LFCSP, 9‑ball WLCSP, 8‑lead SOIC and 14‑lead TSSOP. The datasheet provides detailed electrical characteristics for both 2.7 V and 5 V supply operation, absolute maximum ratings, pin configurations, typical performance curves and ordering information.
| Supply current per amplifier (typ) | 180 µA |
|---|---|
| Input bias current (typ) | 0.5 pA |
| Offset voltage (typ) | 0.5 mV |
| Gain‑bandwidth product | 3.6 MHz |
| Voltage noise density (typ) | 16 nV/√Hz |
| Supply voltage range (single supply) | 2.7 V to 5 V |
| Maximum supply voltage | 6 V |
The typical supply current per amplifier is 180 µA.
The input bias current is typically 0.5 pA.
It is available in 2 mm × 2 mm LFCSP, 9‑ball WLCSP, 8‑lead SOIC and other small‑outline packages.
The absolute maximum supply voltage rating is 6 V.