深圳市中立信电子科技有限公司

ADM706TARZ

监控电路 3V VTG Monitor MPU

3 V, Voltage Monitoring  Microprocessor Supervisory Circuits

FEATURES ADM706TARZ

Precision supply voltage monitor

2.63 V (ADM706P, ADM706R, ADM708R)

2.93 V (ADM706S, ADM708S)

3.08 V (ADM706T, ADM708T)

100 μA quiescent current

200 ms reset pulse width

Debounced manual reset input (MR)

Independent watchdog timer

1.6 sec timeout (ADM706P, ADM706R, ADM706S,ADM706T)

Reset output

Active high (ADM706P)

Active low (ADM706R, ADM706S, ADM706T)

Both active high and active low (ADM708R, ADM708S,ADM708T)

Voltage monitor for power fail or low battery warning

Guaranteed RESET valid with VCC = 1 V

Superior upgrade for MAX706P/R/S/T, MAX708R/S/T

APPLICATIONS ADM706TARZ

Microprocessor systems

Computers

Controllers

Intelligent instruments

Critical microprocessor monitoring

Battery operated systems

Portable instruments

GENERAL DESCRIPTION ADM706TARZ

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

activates if the watchdog input does not toggle within 1.6 sec.

In addition, there is a 1.25 V threshold detector for a power fail

warning, low battery detection, or to monitor an additional

power supply. An active low debounced MR input is also

included.