The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power- on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by an external push button through a manual reset input. The seven parts feature different combinations of watchdog input, manual reset input, and output stage configuration, as shown in Table 1 in the data sheet.

Each part is available in a choice of 26 reset threshold options ranging from 2.5 V to 5 V in 100 mV increments. There are also four reset timeout options of 1 ms, 20 ms, 140 ms, and 1120 ms (minimum) and four watchdog timeout options of 6.3 ms, 102 ms, 1600 ms, and 25.6 sec (typical).

The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are available in 5-lead SOT-23 packages and typically consume only 3 μA, making them suitable for use in low power portable applications.

Applications

Microprocessor systems

Computers

Controllers

Intelligent instruments

Portable equipment

Data Sheet, Rev. C, 4/07

Part#	Reset Threshold (V)	Min Reset Timeout (ms)	Reset Output-Stage	Manual Reset Capability	Typ Watchdog Timeout (ms)	Power Fail Indicator	Package	Product Description	Price* (1000-4999)
AD5100	Adjustable	Adj	Active-Low/Push-Pull	Yes	adj.	Yes	SOP	System-Mgmt IC with Programmable Quad Voltage Monitoring and Supervisory Functions	-
ADM1232	4.37, 4.62	250	Active-High/Push-Pull, Active-Low/Open-Drain	Yes	250, 500, 62.5	No	DIP, SOIC, SOP	Microprocessor Supervisory Circuit	$0.94
ADM13305	0.6, 1.68, 2.25, 2.93, 4.55, Adjustable	140	Active-High/Push-Pull, Active-Low/Push-Pull	Yes	1.6	-	SOIC	Multi-Voltage Supervisory Circuit	$0.95
ADM6316	2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0	1, 1,200, 140, 20	Active-Low/Push-Pull	Yes	102, 1,600, 25,600, 6.3	No	SOT	Supervisory Ckt w/ Watchdog, Manual Reset & Active-Low, Push-Pull Reset Output in 5-Lead SOT-23	$0.50
ADM6318	2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0	1, 1,200, 140, 20	Active-High/Push-Pull, Active-Low/Push-Pull	No	102, 1,600, 25,600, 6.3	No	SOT	Supervisory Circuit with Watchdog and Dual Active-Low/Active-High Push-Pull Reset Outputs	$0.50
ADM6320	2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0	1, 1,200, 140, 20	Active-Low/Open-Drain	Yes	102, 1,600, 25,600, 6.3	No	SOT	Supervisory Circuit with Watchdog, Manual Reset & Active-Low, Open-Drain Reset Output	$0.50
ADM6321	2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0	1, 1,200, 140, 20	Active-High/Push-Pull, Active-Low/Open-Drain	No	102, 1,600, 25,600, 6.3	No	SOT	Supervisory Circuit with Watchdog and Dual Active-Low Open-Drain/Active-High Push-Pull Reset Outputs	$0.50
ADM6821	1.58, 1.67, 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63	140	Active-High/Push-Pull	Yes	1,600	No	SOT	Low Voltage Supervisory Circuit w/ Watchdog, Manual Reset and Active-High, Push-Pull Reset Output	-
ADM6822	1.58, 1.67, 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63	140	Active-Low/Open-Drain	Yes	1,600	No	SOT	Low Voltage Supervisory Circuit w/ Watchdog, Manual Reset and Open-Drain Reset Output	-
ADM6823	1.58, 1.67, 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63	140	Active-Low/Push-Pull	Yes	1,600	No	SOT	Low Voltage Supervisory Circuit w/ Watchdog, Manual Reset and Active-Low, Push-Pull Reset Output	$0.75
ADM6824	1.58, 1.67, 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63	140	Active-High/Push-Pull, Active-Low/Push-Pull	No	1,600	No	SOT	Low Voltage Supervisory Circuit w/ Watchdog, Manual Reset, Active-Hi & Low Push-Pull Reset Output	-
ADM699	4.65	140	Active-High/Push-Pull, Active-Low/Push-Pull	No	1,600	No	DIP, SOIC	µP Supv w/ Watchdog, 4.65V Trip Point, Low Supply Current and Active Low Reset Output	$1.66
ADM705	4.65	160	Active-Low/Push-Pull	Yes	1,600	Yes	DIP, SOIC	µP Supv w/ 4.65V Trip Voltage, Watchdog, Pwr Fail, Manual Reset & Active Low Reset Output	$1.01
ADM706	4.4	160	Active-Low/Push-Pull	Yes	1,600	Yes	DIP, SOIC	+3V, Voltage Monitoring µP Supervisory Circuit	$1.68
ADM823	2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63	140	Active-Low/Push-Pull	Yes	1,600	No	SC70, SOT	Supervisory Circuit with Watchdog, Manual Reset and Active-Low, Push-Pull Reset Output	$0.50
ADM824	2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63	140	Active-High/Push-Pull, Active-Low/Push-Pull	No	1,600	No	SC70, SOT	Supervisory Circuit with Watchdog, Active-High &-Low Push-Pull Reset Output	$0.50
ADM8616	1.58, 1.67, 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63	1, 1,120, 140, 20	Active-Low/Push-Pull	No	102, 1,600, 6.3	No	SC70	Low Voltage Supervisory Circuit w/ Watchdog and Active-Low, Push-Pull Reset Output--- in 4-Lead SC70	$0.85
ADM8617	1.58, 1.67, 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63	1, 1,120, 140, 20	Active-Low/Open-Drain	No	102, 1,600, 6.3	No	SC70	Low Voltage Supervisory Circuit w/ Watchdog & active-low open-drain output in 4-Lead SC70	$0.85
ADM8699	4.65	140	Active-High/Push-Pull, Active-Low/Push-Pull	No	1,600	No	DIP, SOIC	µP Supervisory Circuit with Watchdog, 4.65V Trip Point	$1.99
ADM9690	4.31	10 typ, 50 typ	Active-Low/Push-Pull	No	0.75, 1.5, 12.5, 25	No	SOIC	Power Supply and Watchdog Timer Monitoring Circuit	$1.50

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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