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ADM2914:  Quad UV/OV Positive/Negative Voltage Supervisor

The ADM2914 is a quad voltage supervisory IC ideally suited for monitoring multiple rails in a wide range of applications.

Each monitored rail has two dedicated input pins, VHx and VLx, which allows each rail to be monitored for both overvoltage (OV) and undervoltage (UV) conditions. A common active low undervoltage (UV) and overvoltage ...More

ADM2914:  Quad UV/OV Positive/Negative Voltage Supervisor

Product Description

The ADM2914 is a quad voltage supervisory IC ideally suited for monitoring multiple rails in a wide range of applications.

Each monitored rail has two dedicated input pins, VHx and VLx, which allows each rail to be monitored for both overvoltage (OV) and undervoltage (UV) conditions. A common active low undervoltage (UV) and overvoltage (OV) pin is shared by each of the monitored voltage rails.

The ADM2914 includes a 1 V buffered reference output, REF, that acts as an offset when monitoring a negative voltage. The three-state SEL pin determines the polarity of the third and fourth inputs, that is, it configures the device to monitor positive or negative supplies.

The device incorporates an internal shunt regulator that enables the device to be used in higher voltage systems. This feature requires a resistor to be placed between the main supply rail and the VCC pin to limit the current flow into the VCC pin to no greater than 10 mA. The ADM2914 uses the internal shunt regulator to regulate VCC if the supply line exceeds the absolute maximum ratings.

The ADM2914 is available in two models. The ADM2914-1 offers a latching overvoltage output that can be cleared by toggling the LATCH input pin. The ADM2914-2 has a disable pin that can override and disable both the OV and UV output signals.

The ADM2914 is available in a 16-lead QSOP package. The device operates over the extended temperature range of −40°C to +125°C.

Applications

  • Server supply monitoring
  • FPGA/DSP core and I/O voltage monitoring
  • Telecommunications equipment
  • Medical equipment

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  • Quad UV/OV positive/negative supervisor
  • Supervises up to 2 negative rails
  • Adjustable UV and OV input thresholds
  • High threshold accuracy over temperature: ±1.5%
  • 1 V buffered reference output
  • Open-drain UV and OVoutputs
  • Adjustable reset timeout with disable option
  • Outputs guaranteed down to VCC of 1 V
  • Glitch immunity
  • 62 μA supply current
  • 16-lead QSOP package
  • Watchdog Timer: Yes
  • # of Monitored Voltages: 4
  • Backup-Battery Switch: No
  • Manual Reset Capability: No
  • Package: SOP
  • Reset Threshold Summary: Vcc ± 500 mV
  • Reset Output-Stage: Active-Low/Open-Drain
  • Min Reset Timeout (ms): Adj

Functional Block Diagram for ADM2914

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ADM1810 4.35V & 4.62V 100 Active-Low/Push-Pull No SC70, SOT $0.46
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ADM1817 5 Options--2.18 to 3.06V 100 Active-High/Push-Pull No SC70, SOT $0.46
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For detailed drawings and chemical composition please consult our  Package Site

Pin Count
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.

Temperature Range
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
Price
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.

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*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.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.