ADM8710 Low Voltage, High Accuracy, Quad Voltage Microprocessor Supervisory Circuit

The ADM8710 is a low voltage, high accuracy supervisory circuit. The device monitors up to four system supply voltages. Applications

The ADM8710 incorporates two internally pretrimmed undervoltage threshold options for monitoring 1.8 V and 3.3 V supply voltages. It also offers two adjustable inputs with 0.62 V internal reference, allowing users to program the reset threshold through external resistor dividers. The combination of pretrimmed and adjustable inputs gives the ADM8710 the advantage of being both space saving and flexible.

If a monitored power supply voltage falls below the minimum voltage threshold, a single active low output asserts, triggering a system reset. The output is open drain with a weak internal pull-up to the monitored IN2 supply of typically 10 μA. When all voltages rise above the selected threshold level, the RESET signal remains low for the reset timeout period. The ADM8710 output remains valid as long as IN1 or IN2 exceeds 1 V.

Unused monitored inputs should not be allowed to float or to be grounded. Instead, connect them to a supply voltage greater than their specified threshold voltages.

The ADM8710 is available in a 6-lead SOT-23 package. The device operates over the extended temperature range of −40°C to +85°C.

Features and Benefits
  • Accurate monitoring of up to four power supply voltages
  • 2 factory-set threshold options for monitoring 1.8 V and 3.3 V
  • Adjustable input threshold voltage 0.62 V (±1.5% accuracy)
  • 50 ms typical reset timeout
  • Open-drain RESET output (10 μA internal pull-up)
  • Reset output stage: active low, valid to IN1 = 1 V or IN2 = 1 V
  • Power supply glitch immunity
  • Specified from −40°C to +85°C
  • 6-lead SOT-23 package
Power Management
Data Sheets
Documentnote
ADM8710: Low Voltage, High Accuracy, Quad Voltage Microprocessor Supervisory Circuit Data Sheet (Rev. 0)PDF 243 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADM8710L2ARJZ-RL7 Production6 ld SOT-23REEL 3000-40 to 85C01.79Y
ADM8710: Low Voltage, High Accuracy, Quad Voltage Microprocessor Supervisory Circuit Data Sheet (Rev. 0) adm8710