This document introduces the features and characteristics of Analog Devices' ADM8690-ADM8695 series of products, including low power consumption, high precision voltage monitoring, reset assertion, low switch on-resistance, high current drive, watchdog timer, 400nA standby current, automatic battery backup power switching, extremely fast gating of chip enable signals (3ns) and voltage monitor for power fail.
The ADM8690‑ADM8695 family provides single‑chip supervisory functions for microprocessor systems, including power‑on reset, battery backup switching, watchdog timer, CMOS RAM write protection and power‑fail detection. The devices are offered in 8‑pin DIP, 16‑pin DIP and various small‑outline packages and operate from 2 V to 5.5 V.
Key characteristics include low standby current (as low as 0.4 µA), fast chip‑enable gating (3 ns), and up to 100 mA output drive capability. The datasheet contains pin descriptions, functional block diagrams, absolute maximum ratings, ordering information and detailed electrical specifications.
| Battery backup switching operating voltage (Vec) | 4.75 V – 5.5 V |
|---|---|
| Watchdog timeout period (ADM8690/ADM8692/ADM8694) | 1.6 s (fixed) |
| Maximum output current (Vout) | 100 mA |