EVAL-ADM2914EBZ Analog Devices Inc, EVAL-ADM2914EBZ Datasheet
EVAL-ADM2914EBZ
Specifications of EVAL-ADM2914EBZ
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EVAL-ADM2914EBZ Summary of contents
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FEATURES Quad UV/OV positive/negative supervisor Supervises negative rails Adjustable UV and OV input thresholds High threshold accuracy over temperature: ±1. buffered reference output Open-drain UV and OV reset outputs Adjustable reset timeout with disable option ...
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ADM2914 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 ESD Caution .................................................................................. 4 Pin Configurations and Function Descriptions ...
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SPECIFICATIONS T = −40°C to +85°C. Typical values SEL = V , DIS = open, unless otherwise noted. CC Table 1. Parameter SHUNT REGULATOR V Shunt Regulator Voltage SHUNT V Shunt Regulator Load Regulation, ΔV ...
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ADM2914 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter V CC UV, OV TIMER VLx, VHx, LATCH, DIS, SEL I CC Reference Load Current (I ) REF Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10 ...
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PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS VH1 1 VL1 2 VH2 3 ADM2914-1 VL2 4 TOP VIEW VH3 5 (Not to Scale) VL3 6 VH4 7 VL4 8 Figure 2. ADM2914-1 Pin Configuration Table 4. Pin Function Descriptions Mnemonic Pin No. ...
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ADM2914 TYPICAL PERFORMANCE CHARACTERISTICS 0.505 0.504 0.503 0.502 0.501 0.500 0.499 0.498 0.497 0.496 0.495 –40 –30 –20 – TEMPERATURE (°C) Figure 4. Input Threshold Voltage vs. Temperature 100 ...
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TEMPERATURE (°C) Figure 10 Timeout Period vs. Temperature 0.9 0.8 0.7 WITH 10kΩ PULL-UP 0.6 0.5 0.4 0.3 0.2 0.1 WITHOUT PULL-UP 0 –0.1 0 0.1 ...
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ADM2914 THEORY OF OPERATION VOLTAGE SUPERVISION The ADM2914 supervises up to four voltage rails for overvol- tage and undervoltage conditions. Two pins, VHx and VLx, are assigned to monitor each rail, one for overvoltage detection and the other for undervoltage ...
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MONITORING PIN CONNECTIONS Positive Voltage Monitoring Scheme When monitoring a positive supply, the desired nominal operating voltage for monitoring is denoted by V nominal current through the resistor divider, V overvoltage trip point, and V is the undervoltage trip point. ...
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ADM2914 THRESHOLD ACCURACY The reset threshold accuracy is fundamental, especially at lower voltage levels. Consider an FPGA application that requires core voltage input with tolerance of ±5%, where the supply has a specified regulation, for example, ±1.5%. ...
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Next, consider a −12 V input, which is specified with a ±20% input. The threshold accuracy required by the supply is chosen to be within ±5% of the −12 V rail. Therefore, the overvoltage threshold is set to −13.5 V, ...
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ADM2914 UV AND OV RISE AND FALL TIMES The UV and OV output rise times (from 10% to 90%) can be approximated using the following formula: ≈ − R PULL UP ...
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OV LATCH (ADM2914- overvoltage condition occurs when the LATCH pin is pulled low, the OV pin latches low. Pulling LATCH high clears the latch condition clears while LATCH is high, the latch is bypassed and ...
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ADM2914 TYPICAL APPLICATIONS 1 5V 3.3V PSU 2.5V 1.8V 1.5MΩ 10.7kΩ 162kΩ NOTES 1 1.5% SUPPLY TOLERANCE AND 5% INPUT TOLERANCE REQUIREMENT. Figure 23. Typical Application Diagram for Monitoring 5 V, 3.3 V, 2.5 V, and 1.8 V PSU NOTES ...
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PSU –3.3V 3 –48V 11.5MΩ 681kΩ 8.45kΩ 1.5MΩ 1.43kΩ 117kΩ 21.3kΩ 26.1kΩ 2.87MΩ 187kΩ 5.56kΩ 27.1kΩ NOTES 1 1.5% SUPPLY TOLERANCE AND 10% INPUT TOLERANCE REQUIREMENT SUPPLY TOLERANCE AND 15% INPUT TOLERANCE REQUIREMENT. ...
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... ADM2914-1ARQZ-RL7 −40°C to +125°C ADM2914-2ARQZ −40°C to +125°C ADM2914-2ARQZ-RL7 −40°C to +125°C EVAL-ADM2914EBZ RoHS Compliant Part. ©2009-2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 0.197 (5.00) 0.193 (4.90) ...