Key facts
- Brand
- Analog Devices
- Model
- ADM9690
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-04
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Analog Devices ADM9690 Product Handbook Rev A
The ADM9690 is a voltage‑monitoring comparator and watchdog timer designed to supervise a 5 V microprocessor supply. It generates two reset outputs when the monitored voltage drops below the threshold or when the watchdog timer expires, providing power‑on reset and additional circuitry reset.
The device is offered in an 8‑lead SOIC package, operates from 4.3 V to 5.5 V, and features selectable watchdog timeout periods (0.75 ms to 25 ms) via SEL1/SEL2 pins. Detailed electrical specifications, absolute maximum ratings, pin functions, and typical performance curves are provided in the handbook.
Analog Devices ADM9690 specifications
| Operating Voltage Range (VCC) | 4.3 V – 5.5 V |
|---|---|
| Supply Current | 55 µA – 100 µA |
| Reset Voltage Threshold | 4.2 V – 4.42 V |
| Reset Threshold Hysteresis | 30 mV |
| RESET(2) Timeout Delay | 10 ms |
| Watchdog Timeout Period (SEL2=0, SEL1=0) | 0.75 ms – 1.28 ms |
| WDI Input Threshold (Logic Low) | 0.8 V |
| Output Voltage (RESET pins) | 0.1 V – 0.4 V |
All Analog Devices ADM9690 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the reset voltage threshold for the ADM9690?
The reset threshold is typically 4.4 V, with a specified range of 4.2 V to 4.42 V.
How long does RESET(1) stay low after a power‑on event?
RESET(1) remains low for 50 ms after VMON rises above the reset threshold.
What is the operating voltage range of the ADM9690?
It operates from 4.3 V up to 5.5 V.
From: Analog Devices ADM9690 Power Supply and Watchdog Timer Datasheet
How long does RESET(1) stay active after power‑on?
RESET(1) remains low for 50 ms after the supply voltage rises above the threshold.
From: Analog Devices ADM9690 Power Supply and Watchdog Timer Datasheet