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ADM810RART-REEL7

ADM810RART-REEL7

ADM810RART-REEL7

For Reference Only

Part Number ADM810RART-REEL7
Manufacturer Analog Devices Inc.
Description IC SUPERVSR PUSHPULL 2.63V SOT23
Datasheet ADM810RART-REEL7 Datasheet
Package TO-236-3, SC-59, SOT-23-3
In Stock 336 piece(s)
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ADM810RART-REEL7 Specifications

ManufacturerAnalog Devices Inc.
CategoryIntegrated Circuits (ICs) - PMIC - Supervisors
Datasheet ADM810RART-REEL7 Datasheet
PackageTO-236-3, SC-59, SOT-23-3
Series-
TypeSimple Reset/Power-On Reset
Number of Voltages Monitored1
OutputPush-Pull, Totem Pole
ResetActive High
Reset Timeout140 ms Minimum
Voltage - Threshold2.63V
Operating Temperature-40°C ~ 125°C (TA)
Mounting TypeSurface Mount
Package / CaseTO-236-3, SC-59, SOT-23-3
Supplier Device PackageSOT-23-3

ADM810RART-REEL7 Datasheet

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Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23 Data Sheet ADM803/ADM809/ADM810 FEATURES Specified over temperature Low power consumption: 17 μA Precision voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V options Reset assertion down to 1 V VCC 140 ms minimum power-on reset Open-drain RESET output (ADM803) Push-pull RESET output (ADM809) Push-pull RESET output (ADM810) SC70 and SOT-23 packages APPLICATIONS Microprocessor systems Computers Controllers Intelligent instruments FUNCTIONAL BLOCK DIAGRAMS Figure 1. GENERAL DESCRIPTION The ADM803/ADM809/ADM810 supervisory circuits monitor the power supply voltage in microprocessor systems. They provide a reset output during power-up, power-down, and brownout conditions. On power-up, an internal timer holds reset asserted for 240 ms. This holds the microprocessor in a reset state until conditions have stabilized. The reset output remains operational with VCC as low as 1 V. The ADM803 and ADM809 provide an active low reset signal (RESET), whereas the ADM810 provides an active high signal (RESET) output. The ADM809 and ADM810 have push-pull outputs, whereas the ADM803 has an open-drain output, which requires an external pull-up resistor. Seven reset threshold voltage options are available, suitable for monitoring a variety of supply voltages (see Table 3). The reset comparator features built-in glitch immunity, making it immune to fast transients on VCC. The ADM803/ADM809/ADM810 consume only 17 μA, making them suitable for low power, portable equipment. The ADM803 is available in a 3-lead SC70; the ADM809/ADM810 are available in 3-lead SOT-23 and 3-lead SC70 packages. GND GND VCC VCC *RPULL-UP ADM803/ADM809 MICROPROCESSORSYSTEM VCC *ADM803 ONLY RESET INPUTRESET ADM803 GND RESET GENERATOR 240ms RESET RESET (RESET) GND RESET GENERATOR 240ms ADM809/ADM810 VCC VREF VCC VREF 03 73 6- 00 1 Rev. I Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©1997–2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com

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ADM803/ADM809/ADM810 Data Sheet Rev. I | Page 2 of 11 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagrams ............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 ESD Caution .................................................................................. 4 Pin Configurations and Function Descriptions ............................5 Typical Performance Characteristics ..............................................6 Interfacing to Other Devices ............................................................8 Ensuring a Valid Reset Output Down to VCC = 0 V .................8 Benefits of an Accurate Reset Threshold ...................................8 Interfacing to Microprocessors with Multiple Interrupts ........8 Outline Dimensions ..........................................................................9 Ordering Guide .......................................................................... 10 REVISION HISTORY 10/14—Rev. H to Rev. I Changes to Applications Section .................................................... 1 Changes to Table 2 ............................................................................ 4 Updated Outline Dimensions ......................................................... 9 Changes to Ordering Guide .......................................................... 10 8/08—Rev. G to Rev. H Added Figure 4; Renumbered Sequentially .................................. 5 Changes to Figure 8 .......................................................................... 6 Updated Outline Dimensions ......................................................... 9 Changes to Ordering Guide .......................................................... 10 9/06—Rev. F to Rev. G Updated Outline Dimensions ......................................................... 9 Changes to Ordering Guide ............................................................ 9 6/05—Rev. E to Rev. F. Changes to Ordering Guide ............................................................ 4 Updated Outline Dimensions ......................................................... 9 2/05—Rev. D to Rev. E. Changes to Ordering Guide ............................................................ 4 2/05—Rev. C to Rev. D. Changes to Ordering Guide ............................................................ 4 Updated Outline Dimensions ......................................................... 8 5/03—Rev. B to Rev. C. Added ADM803 ................................................................. Universal Changes to Features .......................................................................... 1 Changes to General Description ..................................................... 1 Changes to Figure 1 ........................................................................... 1 Changes to Specifications ................................................................. 2 Changes to Table I ............................................................................. 3 Updated Ordering Guide ................................................................. 4 1/03—Rev. A to Rev. B. Changes to Specifications ................................................................. 2 Changes to Table I ............................................................................. 3 Changes to Ordering Guide ............................................................. 4 Changes to TPCs 1–3, and TPC 7 ................................................... 5 Updated Outline Dimensions .......................................................... 7 10/02—Rev. 0 to Rev. A. Addition of SC70 package ................................................. Universal Change to General Description ....................................................... 1 Changes to Specifications ................................................................. 2 Changes to Absolute Maximum Ratings ........................................ 3 Change to Table I ............................................................................... 3 Change to Ordering Guide ............................................................... 4 Change to TPC 1 ............................................................................... 5 Updated Outline Dimensions .......................................................... 7 4/97—Revision 0: Initial Version

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Data Sheet ADM803/ADM809/ADM810 Rev. I | Page 3 of 11 SPECIFICATIONS VCC = full operating range, TA = TMIN to TMAX, VCC typical = 5 V for L/M/J models, 3.3 V for T/S models, 3 V for R models, and 2.5 V for Z models, unless otherwise noted. Table 1. Parameter Min Typ Max Unit Test Conditions/Comments VCC OPERATING VOLTAGE RANGE 1.0 5.5 V TA = 0°C to 70°C 1.2 5.5 V TA = −40°C to +125°C Supply Current 24 35 μA VCC < 5.5 V, ADM8xxL/M/J, TA = −40°C to +85°C 17 30 μA VCC < 3.6 V, ADM8xxR/S/T/Z, TA = −40°C to +85°C 60 μA VCC < 5.5 V, ADM8xxL/M/J, TA = 85°C to 125°C 60 μA VCC < 3.6 V, ADM8xxR/S/T/Z, TA = 85°C to 125° C RESET VOLTAGE THRESHOLD ADM8xxL 4.56 4.63 4.70 V TA = 25°C 4.50 4.75 V TA = −40°C to +85°C 4.44 4.82 V TA = −40°C to +125°C ADM8xxM 4.31 4.38 4.45 V TA = 25°C 4.25 4.50 V TA = −40°C to +85°C 4.20 4.56 V TA = −40°C to +125°C ADM8xxJ 3.93 4.00 4.06 V TA = 25°C (ADM809/ADM810 only) 3.89 4.10 V TA = −40°C to +85°C (ADM809/ADM810 only) 3.80 4.20 V TA = −40°C to +125°C (ADM809/ADM810 only) ADM8xxT 3.04 3.08 3.11 V TA = 25°C 3.00 3.15 V TA = −40°C to +85°C 2.95 3.21 V TA = −40°C to +125°C ADM8xxS 2.89 2.93 2.96 V TA = 25°C 2.85 3.00 V TA = −40°C to +85°C 2.81 3.05 V TA = −40°C to +125°C ADM8xxR 2.59 2.63 2.66 V TA = 25°C 2.55 2.70 V TA = −40°C to +85°C 2.52 2.74 V TA = −40°C to +125°C ADM8xxZ 2.28 2.32 2.35 V TA = 25°C 2.25 2.38 V TA = −40°C to +85°C 2.22 2.42 V TA = −40°C to +125°C RESET THRESHOLD TEMPERATURE COEFFICIENT 30 ppm/°C VCC to Reset Delay 20 μs VCC = VTH to (VTH − 100 mV) RESET ACTIVE TIMEOUT PERIOD 140 240 460 ms TA = −40°C to +85°C 100 840 ms TA = 85°C to 125°C RESET OUTPUT VOLTAGE LOW (ADM803/ADM809) 0.3 V VCC = VTH min, ISINK = 1.2 mA, ADM803R/S/T/Z, ADM809R/S/T/Z 0.4 V VCC = VTH min, ISINK = 3.2 mA, ADM803L/M/J, ADM809L/M/J 0.3 V VCC > 1.0 V, ISINK = 50 μA RESET OUTPUT VOLTAGE HIGH (ADM809) 0.8 VCC V VCC > VTH max, ISOURCE = 500 μA, ADM809R/S/T/Z VCC − 1.5 V VCC > VTH max, ISOURCE = 800 μA, ADM809L/M/J RESET OUTPUT VOLTAGE LOW (ADM810) 0.3 V VCC = VTH min, ISINK = 1.2 mA, ADM810R/S/T/Z 0.4 V VCC = VTH min, ISINK = 3.2 mA, ADM810L/M/J RESET OUTPUT VOLTAGE HIGH (ADM810) 0.8 VCC V 1.8 V < VCC < VTH min, ISOURCE = 150 μA RESET OPEN-DRAIN OUTPUT Leakage Current (ADM803) 1 μA VCC > VTH, RESET deasserted

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ADM803/ADM809/ADM810 Data Sheet ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 2. Parameter Ratings VCC −0.3 V to +6 V RESET, RESET (Push-Pull) −0.3 V to VCC + 0.5 V RESET (Open-Drain) −0.3 V to +6.0 V Input Current VCC 20 mA Output Current RESET, RESET 20 mA Rate of Rise, VCC 100 V/μs θJA Thermal Impedance SC70 146°C/W SOT-23 270°C/W Lead Temperature (Soldering, 10 sec) 300°C Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C Storage Temperature Range −65°C to +150°C Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. Table 3. Reset Threshold Options RESET Model Threshold (V) ADM8xxL 4.63 ADM8xxM 4.38 ADM8xxJ (ADM809/ADM810 Only) 4.00 ADM8xxT 3.08 ADM8xxS 2.93 ADM8xxR 2.63 ADM8xxZ 2.32 Figure 2. Power Fail Reset Timing ESD CAUTION t1t1 VREFVREFVREFVREFVCC t1 = RESET TIME = 240ms TYP VREF = RESET VOLTAGE THRESHOLD RESET 03 73 6- 00 3 Rev. I | Page 4 of 11

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Data Sheet ADM803/ADM809/ADM810 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 3. ADM803/ADM809 Pin Configuration Figure 4. ADM810 Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description ADM803/ADM809 ADM810 1 1 GND Ground Reference for All Signals; 0 V. N/A 2 RESET Active High Logic Output. RESET remains high while VCC is below the reset threshold and remains high for 240 ms (typical) after VCC rises above the reset threshold. 2 N/A RESET Active Low Logic Output. RESET remains low while VCC is below the reset threshold and remains low for 240 ms (typical) after VCC rises above the reset threshold. 3 3 VCC Supply Voltage Being Monitored. GND 1 2 3 ADM803/ ADM809/ TOP VIEW (Not to Scale) VCC RESET 03 73 6- 00 2 GND 1 2 3 ADM810 TOP VIEW (Not to Scale) VCC RESET 03 73 6- 10 2 Rev. I | Page 5 of 11

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ADM803/ADM809/ADM810 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS Figure 5. Supply Current vs. Temperature (No Load) Figure 6. Power-Down Reset Delay vs. Temperature, ADM8xxL/M/J Figure 7. Power-Down Reset Delay vs. Temperature, ADM8xxT/S/R/Z Figure 8. Power-Up Reset Timeout vs. Temperature, ADM8xxR Figure 9. Normalized Reset Voltage Threshold vs. Temperature Figure 10. Reset Output Voltage vs. Supply Voltage 25 30 20 15 10 5 0 SU PP LY C U R R EN T (µ A ) TEMPERATURE (°C) –40 –20 0 20 40 60 80 85 03 73 6- 00 4 VCC = 5V VCC = 3V 200 –40 –20 0 20 40 60 80 85 180 160 140 120 100 80 60 40 20 0 PO W ER -D O W N R ES ET (µ s) TEMPERATURE (°C) VOD = VTH – VCC VOD = 10mV VOD = 20mV VOD = 100mV VOD = 200mV 03 73 6- 00 5 180 160 140 120 100 80 60 40 20 0 PO W ER -D O W N R ES ET (µ s) VOD = VTH – VCC VOD = 10mV VOD = 20mV VOD = 100mV VOD = 200mV –40 –20 0 20 40 60 80 85 TEMPERATURE (°C) 03 73 6- 00 6 240.0 235.0 235.5 236.0 236.5 237.0 237.5 238.0 238.5 239.0 239.5 PO W ER -U P R ES ET T IM EO U T (m s) –40 –20 0 20 40 60 80 85 TEMPERATURE (°C) 03 73 6- 00 7 1.0020 0.9990 1.0015 1.0010 1.0005 1.0000 0.9995N O R M A LI ZE D R ES ET T H R ES H O LD –40 –20 0 20 40 60 80 85 TEMPERATURE (°C) 03 73 6- 00 8 2 1 CH1 2.00V CH2 2.00V M 200ms CH1 2.00V T T SUPPLY VOLTAGE 5V p-p RESET OUTPUT VOLTAGE ADM809T ADM809R 03 73 6- 00 9 Rev. I | Page 6 of 11

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Data Sheet ADM803/ADM809/ADM810 Figure 11. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive 400 350 300 250 200 150 100 50 0 1 10 1000100 M A XI M U M T R A N SI EN T D U R A TI O N (µ s) RESET COMPARATOR OVERDRIVE, VTH – VCC (mV) ADM8xxR/S/T/Z ADM8xxL/M/J 03 73 6- 01 0 Rev. I | Page 7 of 11

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ADM803/ADM809/ADM810 Data Sheet Rev. I | Page 8 of 11 INTERFACING TO OTHER DEVICES The ADM803/ADM809/ADM810 series is designed to integrate with as many devices as possible and, therefore, has a standard output dependent on VCC. This enables the parts to be used in both 3 V and 5 V, or any nominal voltage within the minimum and maximum specifications for VCC. This design simplifies interfacing the ADM803/ADM809/ADM810 to other devices. ENSURING A VALID RESET OUTPUT DOWN TO VCC = 0 V When VCC falls below 0.8 V, the ADM803/ADM809 RESET no longer sinks current. A high impedance CMOS logic input connected to RESET may, therefore, drift to undetermined logic levels. To eliminate this problem, a 100 kΩ resistor should be connected from RESET to ground. Figure 12. Ensuring a Valid Reset Output Down to VCC = 0 V BENEFITS OF AN ACCURATE RESET THRESHOLD In other microprocessors, tolerances in supply voltages lead to an overall increase in reset tolerance levels due to the deterioration of the reset circuit’s power supply. In the ADM803/ADM809/ADM810, the possibility of a malfunction during a power failure is greatly reduced because the devices can operate effectively even when there are large degradations of the supply voltages. Another advantage is the very accurate internal voltage reference circuit of the ADM803/ADM809/ ADM810. These benefits combine to produce an exceptionally reliable voltage monitor circuit. INTERFACING TO MICROPROCESSORS WITH MULTIPLE INTERRUPTS In a number of cases, it is necessary to interface many interrupts from different devices (for example, thermal, altitude, and velocity sensors). The ADM803/ADM809/ADM810 can easily be integrated into existing interrupt-handling circuits, as shown in Figure 13, or can be used as standalone devices. Figure 13. Interfacing to Microprocessors with Multiple Interrupts GND ADM809 VCC VCC RESET 03 73 6- 01 1 4-LINE BCDTO MICROPROCESSOR ADM809 GND VCC VCC RESET OTHER SENSING DEVICES PRIORITY ENCODER 74LS147 03 73 6- 01 2

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Data Sheet ADM803/ADM809/ADM810 OUTLINE DIMENSIONS Figure 14. 3-Lead Small Outline Transistor Package [SOT-23-3] (RT-3) Dimensions shown in millimeters Figure 15. 3-Lead Thin Shrink Small Outline Transistor Package [SC70] (KS-3) Dimensions shown in millimeters 3.04 2.90 2.80 COMPLIANT TO JEDEC STANDARDS TO-236-AB 01 19 09 -C 1 2 3 SEATING PLANE 2.64 2.10 1.40 1.30 1.20 2.05 1.78 0.100 0.013 1.03 0.89 0.60 0.45 0.51 0.37 1.12 0.89 0.180 0.085 0.25 0.54 REFGAUGE PLANE 0.60 MAX 0.30 MIN 1.02 0.95 0.88 ALL DIMENSIONS COMPLIANT WITH EIAJ SC70 07 28 09 -A 0.40 0.25 0.10 MAX 1.00 0.80 1.10 0.80 0.40 0.10 0.26 0.10 0.30 0.20 0.10 21 3 0.65 BSC 2.20 2.00 1.80 2.40 2.10 1.80 1.35 1.25 1.15 COPLANARITY 0.10 SEATING PLANE Rev. I | Page 9 of 11

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