The ADT7470 controller is a multichannel temperature sensor and PWM fan controller and fan speed monitor for noise sensitive systems requiring active system cooling. It is designed to interface directly to an I₂C bus and control/monitor the fans using a service processor. The aim is to quickly develop systems that are modular and can easily be expanded depending on the system’s cooling requirements. The device can monitor up to ten temperature sensors. It can also monitor and control the speed of four fans so that they operate at the lowest possible speed for minimum acoustic noise. A FULL_SPEED input is provided to allow the fans to be “blasted” to 100% via external hardware control, under extreme thermal conditions or on system startup. An SMBALERTinterrupt communicates error conditions such as fan underspeed, fan failure to the system service processor. Individual error conditions can then be read from status registers over the I₂C bus. In the event of a fan failure condition, any or all PWM outputs can be programmed to automatically adjust to 100% to provide failsafe cooling.

Part#	# Supplies Monitored	Volt Monitoring Accuracy	# Output Drivers	FET Drive/Enable Output	Voltage Readback	Supply Adj/Margining	Programming Method	Temp Sensor	Package	Price* (1000-4999)
ADM1060	7	2.5%	9	Both	-	-	SMBus	-	28 ld TSSOP	$6.50
ADM1062	10	1%	10	Both	12-bit ADC	12-bit ADC+6 DACs	SMBus	1 External, 1 Internal	40 ld LFCSP , 48 ld TQFP	$7.50
ADM1063	10	1%	10	Both	12-bit ADC	-	SMBus	1 Internal, 2 External	40 ld LFCSP , 48 ld TQFP	$8.25
ADM1064	10	1%	10	Both	12-bit ADC	-	SMBus	-	40 ld LFCSP , 48 ld TQFP	$7.75
ADM1065	10	1%	10	Both	-	-	SMBus	-	40 ld LFCSP , 48 ld TQFP	$5.75
ADM1066	12	1%	10	Both	12-bit ADC	12-bit ADC+6 DACs	SMBus	-	40 ld LFCSP , 48 ld TQFP	$8.50
ADM1067	10	1%	10	Both	-	6 DACs	SMBus	-	40 ld LFCSP , 48 ld TQFP	$6.50
ADM1068	8	1%	8	Both	-	-	SMBus	-	32 ld LQFP	$4.00
ADM1069	8	1%	8	Both	12-bit ADC	12-bit ADC+4 DACs	SMBus	-	32 ld LQFP	$4.35
ADM1085	Cascadeable	7%	1	Enable	-	-	Analog	-	6 ld SC70	$0.34
ADM1086	Cascadeable	7%	1	Enable	-	-	Analog	-	6 ld SC70	$0.34
ADM1087	Cascadeable	7%	1	Enable	-	-	Analog	-	6 ld SC70	$0.34
ADM1088	Cascadeable	-	1	Enable	-	-	Analog	-	6 ld SC70	-
ADM1184	4	-	4	Enable	-	-	Analog	-	-	$2.39
ADM1185	4	0.8%	4	Enable	-	-	Analog	-	10-Lead MSOP	$1.20
ADM6819	2	2.6%	1	FET Drive	-	-	Analog	-	6-ld SOT-23	$1.20
ADM6820	2	2.6%	1	FET Drive	-	-	Analog	-	6-ld SOT-23	$1.20

* 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.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.

Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.