GENERAL DESCRIPTION
The ADM8690/ADM8691/ADM8695 supervisory circuits offer complete single-chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include microprocessor reset, backup battery switchover, watchdog timer, CMOS RAM write protection, and power failure warning. The complete family provides a variety of configurations to satisfy most microprocessor system requirements.
FEATURES
Upgrade for the ADM690, ADM691, ADM695 and
for the MAX690, MAX691, MAX695
Specified over temperature
Low power consumption: 0.7 mW
Precision voltage monitor
Reset assertion down to 1 V VCC
Low switch on resistance: 0.7 Ω normal, 7 Ω in backup
High current drive: 100 mA
Watchdog timer: 100 ms, 1.6 sec, or adjustable
Standby current: 400 nA
Automatic battery backup power switching
Extremely fast gating of chip enable signals (3 ns)
Voltage monitor for power fail
Available in TSSOP package
APPLICATIONS
Microprocessor systems
Computers
Controllers
Intelligent instruments
Automotive systems