ADM825 Analog Devices, ADM825 Datasheet
ADM825
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ADM825 Summary of contents
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... V to 4.63 V. The reset and watchdog timeout periods are fixed at 140 ms (minimum) and 1.6 sec (typical), respectively. The ADM823/ADM824/ADM825 are available in 5-lead SC70 and SOT-23 packages and typically consume only 5 μA, making them suitable for use in low power, portable applications. ...
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... ADM823/ADM824/ADM825 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ............................................. 7 Circuit Description........................................................................... 9 REVISION HISTORY 10/10—Rev Rev. C Updated Outline Dimensions ....................................................... 11 Changes to Ordering Guide .......................................................... 11 5/08—Rev Rev. B Changes to General Description Section ...
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... ADM82xZ (SC70 Only) ADM82xY (SC70 Only) RESET THRESHOLD TEMPERATURE COEFFICIENT RESET THRESHOLD HYSTERESIS RESET TIMEOUT PERIOD V TO RESET DELAY CC RESET/RESET RESET Output Voltage RESET Output Voltage (ADM824, ADM825 5.5 V for ADM82xM 3. 3.6 V for ADM82xT 2. 2.75 V for ADM82xZ Min Typ Max 1 5 ...
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... ADM823/ADM824/ADM825 Parameter WATCHDOG INPUT (ADM823, ADM824) Watchdog Timeout Period WDI Pulse Width WDI Input Threshold WDI Input Current MANUAL RESET INPUT (ADM823, ADM825) MR Input Threshold MR Input Pulse Width MR Glitch Rejection MR Pull-Up Resistance MR to Reset Delay Min Typ Max Unit 1.12 1.6 2.40 sec ...
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... Exposure to absolute 20 mA maximum rating conditions for extended periods may affect −0 0.3 V) device reliability. CC −40°C to +125°C −65°C to +150°C ESD CAUTION 146°C/W 270°C/W 300°C 215°C 220°C Rev Page ADM823/ADM824/ADM825 ...
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... Manual Reset Input. This is an active low input which, when forced low for at least 1 μs, generates a reset. It features a 52 kΩ internal pull-up. Power Supply Voltage Being Monitored. Rev Page RESET 1 CC ADM825 GND 2 TOP VIEW (Not to Scale) RESET 3 Figure 4. ADM825 Pin Configuration is below the reset threshold ...
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... Rev Page ADM823/ADM824/ADM825 – 100 TEMPERATURE (°C) – 100 TEMPERATURE (°C) (ADM823/ADM825) – 100 TEMPERATURE (°C) Figure 10. Reset Timeout Period vs. Temperature 120 Falling) CC 120 120 ...
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... Figure 13. Manual Reset Minimum Pulse Width vs. Temperature 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1000 –40 Figure 14. Watchdog Input Minimum Pulse Width vs. Temperature Rev Page 100 TEMPERATURE (°C) (ADM823/ADM825) NEGATIVE PULSE POSITIVE PULSE 10 60 110 160 TEMPERATURE (°C) (ADM823/ADM824) ...
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... Figure 15. Reset Timing Diagram MANUAL RESET INPUT The ADM823/ADM825 feature a manual reset input ( MR ) which, when driven low, asserts the reset output. When MR transitions from low to high, reset remains asserted for the duration of the reset active timeout period before deasserting. The MR input has a 52 kΩ internal pull-up so that the input is always high when unconnected ...
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... NEGATIVE-GOING V TRANSIENTS CC To avoid unnecessary resets caused by fast power supply transients, the ADM823/ADM824/ADM825 are equipped with glitch rejection circuitry. The typical performance characteristic in Figure 12 plots V transient duration vs. the transient mag- CC nitude. The curves show combinations of transient magnitude and duration for which a reset is not generated for 4 ...
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... Rev Page ADM823/ADM824/ADM825 0.46 0.36 0.26 0.55 10° 0.45 0.20 5° 0.35 BSC 0° Package Description Package Option 5-Lead SC70 ...
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... ADM825LYRJ-R7 4.63 ADM825LYRJZ-R7 4.63 ADM825MYRJ-R7 4.38 ADM825TYKSZ-R7 3.08 ADM825TYRJ-R7 3.08 ADM825TYRJZ-R7 3.08 ADM825SYKSZ-R7 2.93 ADM825SYRJ-R7 2.93 ADM825SYRJZ-R7 2.93 ADM825RYRJ-R7 2.63 ADM825RYRJZ-R7 2.63 ADM825ZYKSZ-R7 2. RoHS Compliant Part. ©2004–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Temperature Range Quantity −40°C to +125°C 3k − ...