Overview
The ADM693ANZ is a microprocessor supervisory circuit produced by Analog Devices Inc. It is part of the ADM690-ADM695 family, which offers comprehensive single-chip solutions for power supply monitoring and battery control functions in microprocessor systems. These circuits are designed to provide essential functions such as power-on reset, battery backup switchover, watchdog timer, and power failure warning, making them ideal for various microprocessor-based applications.
Key Specifications
| Parameter | Value |
|---|---|
| Nominal Reset Time | 50 ms or Adjustable |
| Nominal VCC Reset Threshold | 4.4 V |
| Nominal Watchdog Timeout Period | 100 ms, 1.6 s, or Adjustable |
| Battery Backup Switching | Yes |
| Chip Enable Signals | Yes |
| Supply Current (Excludes IOUT) | 1 - 1.95 mA |
| Supply Current in Battery Backup Mode | 0.6 - 1 µA |
| Battery Standby Current | 5.5 V > VCC > VBATT + 0.2 V: -0.1 to +0.02 µA |
| Power Up/Down Switchover Threshold | 70 mV |
| Package Type | 16-pin DIP and small outline packages |
Key Features
- Low power consumption (5 mW)
- Precision voltage monitor with reset assertion down to 1 V VCC
- Low switch on-resistance (1.5 Ω normal, 20 Ω in backup)
- High current drive (100 mA)
- Watchdog timer with 100 ms, 1.6 s, or adjustable timeout periods
- Automatic battery backup power switching
- Fast gating of chip enable signals (5 ns)
- Write protection of CMOS RAM or EEPROM
- Adjustable reset and watchdog timeout periods
Applications
- Microprocessor systems
- Computers
- Controllers
- Intelligent instruments
- Automotive systems
Q & A
- What is the primary function of the ADM693ANZ?
The primary function of the ADM693ANZ is to provide power supply monitoring and battery control functions in microprocessor systems. - What are the nominal reset time and watchdog timeout periods for the ADM693ANZ?
The nominal reset time is 50 ms or adjustable, and the watchdog timeout periods are 100 ms, 1.6 s, or adjustable. - Does the ADM693ANZ support battery backup switching?
Yes, the ADM693ANZ supports battery backup switching. - What is the supply current of the ADM693ANZ in normal operation?
The supply current is between 1 - 1.95 mA. - What is the battery standby current when VCC is 0 V and VBATT is 2.8 V?
The battery standby current is between 0.6 - 1 µA. - What is the switchover threshold for power up/down?
The switchover threshold is 70 mV. - In what package types is the ADM693ANZ available?
The ADM693ANZ is available in 16-pin DIP and small outline packages. - What are some key applications of the ADM693ANZ?
Key applications include microprocessor systems, computers, controllers, intelligent instruments, and automotive systems. - Does the ADM693ANZ have adjustable reset and watchdog timeout periods?
Yes, the ADM693ANZ has adjustable reset and watchdog timeout periods. - What is the maximum current drive capability of the ADM693ANZ?
The maximum current drive capability is 100 mA.
