The ADM1185 is an integrated, 4-channel, voltage monitoring and sequencing device. A 2.7 V to 5.5 V power supply is required on the VCC pin to power the device.
Four precision comparators monitor four voltage rails. All comparators have a 0.6 V reference with a worst-case accuracy of 0.8%. Resistor networks that are external to the VIN1, VIN2, VIN3, and VIN4 pins set the trip points for the monitored supply rails.
A digital core interprets the status of the comparator outputs.
Internal time delays can be used for sequencing the startup of subsequent power supplies enabled by the outputs. Supplies falling out of range are also detected and, as a result, appropriate outputs are disabled.
The ADM1185 has four open-drain outputs. In a typical configuration, OUT1 to OUT3 are used to enable power supplies, while PWRGD is a common power-good output, indicating the status of all monitored supplies.
The ADM1185 is available in a 10-lead mini small outline package (MSOP).
|Title||Content Type||File Type|
|ADM1185: Quad Voltage Monitor and Sequencer Data Sheet (Rev B, 06/2009) (pdf, 316 kB)||Data Sheets|
|UG-288: Quad Voltage Monitor and Sequencer Evaluation Kit (pdf, 219 kB)||User Guides|
|Supervisory Devices Complementary Parts Guide for Altera FPGAs (pdf, 664 kB)||Product Selection Guide|
|Supervisory Devices Complementary Parts Guide for Xilinx FPGAs (pdf, 661 kB)||Product Selection Guide|
|Voltage Monitoring and Sequencing (2009/2010) (pdf)||Overview|
|Power System Management (Spring 2007) (pdf, 1170 kB)||Overview|
|Power Supply Sequencing Bulletin (2007) (pdf, 5188 kB)||Solutions Bulletins|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
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.