Overview
The ADM690AN, produced by Analog Devices Inc., is a microprocessor supervisory circuit that provides comprehensive power supply monitoring and battery control functions. This integrated circuit (IC) is part of the ADM690-ADM695 family, designed to offer single-chip solutions for various microprocessor system requirements. It features power-on reset, battery backup switching, watchdog timer, and power failure warning, making it an essential component for ensuring reliable operation in diverse electronic systems.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C to +85°C |
| Output Type | Push-Pull, Totem Pole |
| Reset Timeout | Minimum 140ms |
| Voltage Threshold | 4.65V |
| Number of Voltages Monitored | 1 |
| Reset Signal | Active Low |
| Supply Current (Excludes IOUT) | 1.95 mA |
| Battery Standby Current | 0.6 µA (VCC = 0 V, VBATT = 2.8 V) |
| Watchdog Timer | 1.6 seconds |
Key Features
- Power-on reset output during power-up, power-down, and brownout conditions, with the RESET output operational down to 1 V VCC.
- Battery backup switching for CMOS RAM, CMOS microprocessor, or other low power devices.
- A reset pulse if the optional watchdog timer has not been toggled within the specified time (1.6 seconds).
- A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.
- Automatic battery backup power switching with a switchover threshold of 70 mV.
- Low power consumption (5 mW) and high current drive (100 mA).
- Compact and space-saving 8-SOIC package.
Applications
The ADM690AN is suitable for a wide range of electronic devices and systems that require power supervision and monitoring. These include:
- Microprocessor systems
- Computers
- Controllers
- Intelligent instruments
- Automotive systems
- Industrial, medical, and consumer electronics applications.
Q & A
- What is the primary function of the ADM690AN? The primary function of the ADM690AN is to provide power supply monitoring and battery control functions in microprocessor systems.
- What is the operating temperature range of the ADM690AN? The operating temperature range is -40°C to +85°C.
- What type of output does the ADM690AN have? The ADM690AN has a push-pull, totem pole output.
- What is the minimum reset timeout of the ADM690AN? The minimum reset timeout is 140ms.
- Does the ADM690AN support battery backup switching? Yes, it supports battery backup switching for CMOS RAM, CMOS microprocessor, or other low power devices.
- What is the watchdog timer period for the ADM690AN? The watchdog timer period is 1.6 seconds.
- How many voltages can the ADM690AN monitor? The ADM690AN can monitor one voltage.
- What is the supply current of the ADM690AN (excluding IOUT)? The supply current is 1.95 mA.
- What is the battery standby current of the ADM690AN? The battery standby current is 0.6 µA (VCC = 0 V, VBATT = 2.8 V).
- In what package is the ADM690AN available? The ADM690AN is available in an 8-SOIC package.
