The ADM706P/ADM706R/ADM706S/ADM706T and the ADM708R/ADM708S/ADM708T microprocessor supervisory circuits are suitable for monitoring either 3 V or 3.3 V power supplies.
The ADM706P/ADM706R/ADM706S/ADM706T provide power-supply monitoring circuitry that generate a reset output during power-up, power-down, and brownout conditions. The reset output remains operational with VCC as low as 1 V. Independent watchdog monitoring circuitry is also provided. This is activated if the watchdog input has not been toggled within 1.6 seconds.
In addition, there is a 1.25 V threshold detector for power-fail warning, low battery detection, or to monitor an additional power supply. An active low debounced MR input is also included.
The ADM706R, ADM706S, and ADM706T are identical except for the reset threshold monitor levels, which are 2.63 V, 2.93 V, and 3.08 V, respectively. The ADM706P is identical to the ADM706R in that the reset threshold is 2.63 V. It differs only in that it has an active high reset output.
The ADM708R/ADM708S/ADM708T provide similar functio-nality as the ADM706R/ADM706S/ADM706T and only differ in that a watchdog timer function is not available. Instead, an active high reset output (RESET) is provided in addition to the active low (RESET) output.
All parts are available in narrow 8-lead PDIP and 8-lead SOIC packages. Applications
The ADM708R/S/T are also available which is identical to the ADM708 except for the reset threshold monitor levels. The ADM708R/S/T Data Sheet found under the "Additional Data Sheets" link explains the differences.
|Title||Content Type||File Type|
|ADM706/ADM708: 3 V, Voltage Monitoring Microprocessor Supervisory Circuits Data Sheet (Rev C, 05/2008) (pdf, 398 kB)||Data Sheets|
|ADM705/ADM706/ADM707/ADM708: Low Cost Microprocessor Supervisory Circuits Data Sheet (Rev G, 03/2008) (pdf, 485 kB)||Data Sheets|
|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 Products Applications Guide (pdf, 1808 kB)||Solutions Bulletins|
|Voltage Monitoring and Sequencing (2009/2010) (pdf)||Overview|
|Voltage Monitoring Products 2008 (pdf, 3930 kB)||Overview|
|Power System Management (Spring 2007) (pdf, 1170 kB)||Overview|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
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