ADM8699 Microprocessor Supervisory Circuit with Watchdog Feature, 4.65V Threshold Voltage, Low Supply Current and Active Low Reset Output. Upgrade for ADM699

The ADM8698/ADM8699 supervisory circuits provide power supply monitoring and watchdog timing for microprocessor systems.

The ADM8698 monitors the 5 V VCC power supply and generates a RESET pulse during power up, power down and during low voltage “Brown Out” conditions. The RESET output is guaranteed to be functional (logic low) with VCC as low as 1 V.

The ADM8699 features an identical monitoring circuit as in the ADM8698, plus an additional watchdog timer input to monitor microprocessor activity. The RESET output is forced low if the watchdog input is not toggled within the 1 second watchdog timeout period.

Both parts are available in 8-pin plastic DIP/SOIC and 16-lead SOIC packages. The 16-lead SOIC contains additional outputs RESET (without inversion) and Watchdog Output WDO (ADM8699 only).

Features and Benefits

Superior Upgrade for ADM698/ADM699, MAX698/MAX699
Guaranteed RESET Assertion with VCC = 1 V
Low 70 µA Supply Current
Precision 4.65 V Voltage Monitor

Power OK/Reset Time Delay
Watchdog Timer
Minimum Component Count
Performance Specified over Temperature

Power Management

Data Sheets

Document	note
ADM8698/ADM8699: Microprocessor Supervisory Circuits Data Sheet (Rev. 0)	PDF 97 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADM8699ANZ Last Time Buy	8 ld PDIP	OTH 50	-40 to 85C	2.73	2.42	Y
ADM8699ARNZ Production	8 ld SOIC	OTH 98	-40 to 85C	2.64	2.35	Y
ADM8699ARNZ-REEL Production	8 ld SOIC	REEL 2500	-40 to 85C	2.64	2.35	Y
ADM8699ARWZ Last Time Buy	16 ld SOIC - Wide	OTH 47	-40 to 85C	2.64	2.35	Y