ADM691 Microprocessor Supervisor with Backup Battery Switchover, 50 ms Nominal Adjustable Reset Period, Adjustable Watchdog Period, Chip Enable Signals, 4.65V Threshold Voltage, Watchdog, Backup Battery and Low VCC Status O/Ps and 100mA Output Current

The ADM690-ADM695 family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include µP 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.

The ADM690, ADM692 and ADM694 are available in 8-pin DIP packages and provide:

The ADM691, ADM693 and ADM695 are available in 16-pin DIP and small outline packages and provide three additional functions.

The ADM690-ADM695 family is fabricated using an advanced epitaxial CMOS process combining low power consumption (5 mW), extremely fast Chip Enable gating (5 ns) and high reliability. RESET assertion is guaranteed with VCC as low as 1 V. In addition, the power switching circuitry is designed for minimal voltage drop thereby permitting increased output current drive of up to 100 mA without the need for an external pass transistor.

Features and Benefits

Superior Upgrade for MAX690–MAX695
Specified Over Temperature
Low Power Consumption (5 mW)
Precision Voltage Monitor
Reset Assertion Down to 1 V VCC
Low Switch On-Resistance 1.5 O Normal, 20 O in Backup
High Current Drive (100 mA)

Watchdog Timer—100 ms, 1.6 s, or Adjustable
600 nA Standby Current
Automatic Battery Backup Power Switching
Extremely Fast Gating of Chip Enable Signals (5 ns)
Voltage Monitor for Power Fail

Power Management

Battery Backup IC

Data Sheets

Document	note
ADM690-ADM695: Microprocessor Supervisory Circuits Data Sheet (Rev. A)	PDF 285 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADM691AN Last Time Buy	16 ld PDIP	OTH 25	-40 to 85C	3.64	3.16	N
ADM691ANZ Production	16 ld PDIP	OTH 25	-40 to 85C	3.16	2.73	Y
ADM691AQ Last Time Buy	16 ld CerDIP	OTH 25	-40 to 85C	6.13	5.21	N
ADM691AR Production	16 ld SOIC - Wide	OTH 47	-40 to 85C	3.89	3.29	N
ADM691AR-REEL Production	16 ld SOIC - Wide	REEL 1000	-40 to 85C	0	3.29	N
ADM691ARZ Production	16 ld SOIC - Wide	OTH 47	-40 to 85C	3.37	2.84	Y
ADM691ARZ-REEL Production	16 ld SOIC - Wide	REEL 1000	-40 to 85C	0	2.84	Y
ADM691ARZ-REEL7 Production	16 ld SOIC - Wide	REEL 400	-40 to 85C	0	2.84	Y
ADM691SQ Production	16 ld CerDIP	OTH 25	-55 to 125C	7.26	6.2	N