ADM810MAKS-REEL

Microprocessor Supervisory Circuits in 3-Lead SC70 and SOT-23 ADM803/ADM809/ADM810 FEATURES Specified over Temperature Low Power Consumption (17 �A) Precision Voltage Monitor: 2.5 V, 3 V, 3.3 V, 5 V Options Reset Assertion Down to 1 V VCC 140 ms Min Power-On Reset Open-Drain RESET Output (ADM803) Push-Pull RESET Output (ADM809) Push-Pull RESET Output (ADM810) SC70 and SOT-23 Packages FUNCTIONAL BLOCK DIAGRAM ADM803 VCC RESET GENERATOR 240ms VREF GND APPLICATIONS Microprocessor Systems Computers Controllers Intelligent Instruments Automotive Systems ADM809 /ADM810 VCC RESET GENERATOR 240ms VREF Seven reset threshold voltage options are available, suitable for monitoring a variety of supply voltages. Refer to Table I. The reset comparator features built-in glitch immunity, making it immune to fast transients on VCC. RESET (RESET) GND GENERAL DESCRIPTION The ADM803/ADM809/ADM810 supervisory circuits monitor the power supply voltage in microprocessor systems. They pro­ vide 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 opera­ tional with VCC as low as 1 V. The ADM803 and ADM809 provide an active low reset signal (RESET), while 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. RESET VCC VCC VCC *RPULL-UP MICROPROCESSOR SYSTEM RESET INPUT ADM803 /ADM809 RESET GND GND *ADM803 ONLY Figure 1. Typical Operating Circuit The ADM803/ADM809/ADM810 consume only 17 mA, making them suitable for low power, portable equipment. The ADM803 is available in a 3-lead SC70; the ADM809/ ADM810 is available in 3-lead SOT-23 and SC70 packages. REV. F 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. 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 www.analog.com Fax: 781/461-3113 © 2005 Analog Devices, Inc. All rights reserved. ADM803/ADM809/ADM810–SPECIFICATIONS (V = full operating range, T = T V Typ = 5 V for L/M/J models, 3.3 V for T/S models, 3 V for R models, 2.5 V for Z models, unless otherwise noted.) CC A MIN to TMAX, CC Parameter Min VCC OPERATING VOLTAGE RANGE 1.0 1.2 Supply Current RESET THRESHOLD Reset Voltage Threshold ADM8_L ADM8_L ADM8_L ADM8_M ADM8_M ADM8_M ADM8_J* ADM8_J* ADM8_J* ADM8_T ADM8_T ADM8_T ADM8_S ADM8_S ADM8_S ADM8_R ADM8_R ADM8_R ADM8_Z ADM8_Z ADM8_Z 4.56 4.50 4.44 4.31 4.25 4.20 3.93 3.89 3.80 3.04 3.00 2.95 2.89 2.85 2.81 2.59 2.55 2.52 2.28 2.25 2.22 RESET THRESHOLD TEMPERATURE COEFFICIENT VCC to Reset Delay RESET ACTIVE TIMEOUT PERIOD Typ Max Unit Test Conditions/Comments 24 5.5 5.5 35 V V mA 17 30 mA 60 mA 60 mA TA = 0∞C to 70∞C TA = –40∞C to +125∞C VCC < 5.5 V, ADM8_L/M/J, TA = –40∞C to +85∞C VCC < 3.6 V, ADM8_R/S/T/Z, TA = –40∞C to +85∞C VCC < 5.5 V, ADM8_L/M/J, TA = 85∞C to 125∞C VCC < 3.6 V, ADM8_R/S/T/Z, TA = 85∞C to 125∞C 4.70 4.75 4.82 4.45 4.50 4.56 4.06 4.10 4.20 3.11 3.15 3.21 2.96 3.00 3.05 2.66 2.70 2.74 2.35 2.38 2.42 V V V V V V V V V V V V V V V V V V V V V TA = 25∞C TA = –40∞C to +85∞C TA = –40∞C to +125∞C TA = 25∞C TA = –40∞C to +85∞C TA = –40∞C to +125∞C TA = 25∞C TA = –40∞C to +85∞C TA = –40∞C to +125∞C TA = 25∞C TA = –40∞C to +85∞C TA = –40∞C to +125∞C TA = 25∞C TA = –40∞C to +85∞C TA = –40∞C to +125∞C TA = 25∞C TA = –40∞C to +85∞C TA = –40∞C to +125∞C TA = 25∞C TA = –40∞C to +85∞C TA = –40∞C to +125∞C ppm/∞C ms VCC = VTH to (VTH – 100 mV) 460 840 ms ms TA = –40∞C to +85∞C TA = 85∞C to 125∞C 0.3 V 0.4 V 0.3 V VCC = VTH min, ISINK = 1.2 mA, ADM803R/S/T/Z, ADM809R/S/T/Z VCC = VTH min, ISINK = 3.2 mA, ADM803L/M/J, ADM809L/M/J VCC >1.0 V, ISINK = 50 mA 4.63 4.38 4.00 3.08 2.93 2.63 2.32 30 20 140 100 240 RESET OUTPUT VOLTAGE LOW (ADM803/ADM809) RESET OUTPUT VOLTAGE HIGH (ADM809) 0.8 VCC V VCC – 1.5 V RESET OUTPUT VOLTAGE LOW (ADM810) RESET OUTPUT VOLTAGE HIGH (ADM810) 0.3 V 0.4 V 0.8 VCC RESET OPEN-DRAIN OUTPUT Leakage Current (ADM803) 1 VCC > VTH max, ISOURCE = 500 mA, ADM809R/S/T/Z VCC > VTH max, ISOURCE = 800 mA, ADM809L/M/J VCC = VTH min, ISINK = 1.2 mA, ADM810R/S/T/Z VCC = VTH min, ISINK = 3.2 mA, ADM810L/M/J V 1.8 V < VCC < VTH min, ISOURCE = 150 mA mA VCC > VTH, reset de-asserted *ADM809/ADM810 only. –2– REV. F ADM803/ADM809/ADM810 ABSOLUTE MAXIMUM RATINGS* PIN CONFIGURATION (TA = 25∞C, unless otherwise noted.) VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V RESET, RESET . . . . . . . . . . . . . . . . . . –0.3 V to VCC + 0.5 V Input Current VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Output Current RESET, RESET (push-pull) . . . . . . . . . . . . . . . . . . . 20 mA RESET (open drain) . . . . . . . . . . . . . . . . . –0.3 V to +6.0 V Rate of Rise, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 V/ms �JA Thermal Impedance, SC70 . . . . . . . . . . . . . . . . . 146∞C/W �JA Thermal Impedance, 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 TOP VIEW (Not to Scale) PIN FUNCTION DESCRIPTIONS Table I. Reset Threshold Options Threshold (V) ADM8_L ADM8_M ADM8_J* ADM8_T ADM8_S ADM8_R ADM8_Z 4.63 4.38 4.00 3.08 2.93 2.63 2.32 3 VCC RESET, RESET 2 Pin No. Mnemonic Function 1 GND 0 V. Ground reference for all signals. 2 RESET (ADM803/ Active Low Logic Output. ADM809) RESET remains low while VCC is below the reset threshold and remains low for 240 ms (typ) after VCC rises above the reset threshold. 2 RESET (ADM810) Active High Logic Output. RESET remains high while VCC is below the reset threshold and remains high for 240 ms (typ) after VCC rises above the reset threshold. 3 VCC *Stresses above those listed under Absolute Maximum Ratings may cause perma­ nent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods of time may affect device reliability. RESET Model ADM803/ ADM809/ ADM810 GND 1 Supply Voltage Being Monitored. *ADM809/ADM810 only. VCC RESET VREF VREF VREF t1 t1 t1 = RESET TIME = 240ms TYP VREF = RESET VOLTAGE THRESHOLD Figure 2. Power Fail Reset Timing CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADM803/ADM809/ADM810 feature proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. REV. F –3– VREF ADM803/ADM809/ADM810 ORDERING GUIDE Model Threshold Reset (V) Temperature Range Branding Quantity Package Type ADM803LAKS-REEL ADM803LAKS-REEL7 ADM803LAKSZ-REEL1 ADM803LAKSZ-REEL71 ADM803MAKS-REEL ADM803MAKS-REEL7 ADM803MAKSZ-REEL1 ADM803MAKSZ-REEL71 ADM803RAKS-REEL ADM803RAKS-REEL7 ADM803RAKSZ-REEL1 ADM803RAKSZ-REEL71 ADM803SAKS-REEL ADM803SAKS-REEL7 ADM803SAKSZ-REEL1 ADM803SAKSZ-REEL71 ADM803TAKS-REEL ADM803TAKS-REEL7 ADM803TAKSZ-REEL1 ADM803TAKSZ-REEL71 ADM803ZAKS-REEL ADM803ZAKS-REEL7 ADM803ZAKSZ-REEL1 ADM803ZAKSZ-REEL71 4.63 4.63 4.63 4.63 4.38 4.38 4.38 4.38 2.63 2.63 2.63 2.63 2.93 2.93 2.93 2.93 3.08 3.08 3.08 3.08 2.32 2.32 2.32 2.32 –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C M02 M02 M6L M6L M03 M03 M6J M6J M07 M07 M6M M6M M06 M06 M50 M50 M05 M05 M4M M4M M08 M08 M6N M6N 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 ADM809-5LAKSZ-REEL1 ADM809-5LAKSZ-REEL-RL71 ADM809-5LARTZ-REEL1 ADM809-5LARTZ-REEL-RL71 ADM809-5SAKSZ-REEL1 ADM809-5SAKSZ-REEL-RL71 ADM809-5SARTZ-REEL1 ADM809-5SARTZ-REEL-RL71 ADM809JAKS-REEL ADM809JAKS-REEL7 ADM809JAKSZ-REEL1 ADM809JAKSZ-REEL71 ADM809JART-REEL ADM809JART-REEL7 ADM809JARTZ-REEL1 ADM809JARTZ-REEL71 ADM809LAKS-REEL ADM809LAKS-REEL7 ADM809LAKSZ-REEL1 ADM809LAKSZ-REEL71 ADM809LART-REEL ADM809LART-REEL7 ADM809LARTZ-REEL1 ADM809LARTZ-REEL71 ADM809MAKS-REEL ADM809MAKS-REEL7 ADM809MAKSZ-REEL1 ADM809MAKSZ-REEL71 ADM809MART-REEL ADM809MART-REEL7 ADM809MARTZ-REEL1 ADM809MARTZ-REEL71 ADM809RAKS-REEL ADM809RAKS-REEL7 2.63 2.63 2.63 2.63 2.63 2.63 2.63 2.63 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.63 4.63 4.63 4.63 4.63 4.63 4.63 4.63 4.38 4.38 4.38 4.38 4.38 4.38 4.38 4.38 2.63 2.63 –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C M6Q M6Q M6Q M6Q M4C M4C M4C M4C M9C M9C M6P M6P 9JXX 9JXX M6P M6P M9A M9A M6R M6R 9LXX 9LXX M6R M6R M9B M9B M51 M51 9MXX 9MXX M51 M51 M9F M9F 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 –4– REV. F ADM803/ADM809/ADM810 ORDERING GUIDE Model Threshold Reset (V) Temperature Range Branding Quantity Package Type ADM809RAKSZ-REEL ADM809RAKSZ-REEL71 ADM809RART-REEL ADM809RART-REEL7 ADM809RARTZ-REEL1 ADM809RARTZ-REEL71 ADM809SAKS-REEL ADM809SAKS-REEL7 ADM809SAKSZ-REEL1 ADM809SAKSZ-REEL71 ADM809SART-REEL ADM809SART-REEL7 ADM809SARTZ-REEL1 ADM809SARTZ-REEL71 ADM809TAKS-REEL ADM809TAKS-REEL7 ADM809TAKSZ-REEL1 ADM809TAKSZ-REEL71 ADM809TART-REEL ADM809TART-REEL7 ADM809TARTZ-REEL1 ADM809TARTZ-REEL71 ADM809ZAKS-REEL ADM809ZAKS-REEL7 ADM809ZAKSZ-REEL1 ADM809ZAKSZ-REEL1 ADM809ZAKSZ-REEL71 ADM809ZAKSZ-REEL71 ADM809ZART-REEL ADM809ZART-REEL7 ADM809ZARTZ-REEL1 ADM809ZARTZ-REEL71 2.63 2.63 2.63 2.63 2.63 2.63 2.93 2.93 2.93 2.93 2.93 2.93 2.93 2.93 3.08 3.08 3.08 3.08 3.08 3.08 3.08 3.08 2.32 2.32 2.32 2.32 2.32 2.32 2.32 2.32 2.32 2.32 –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C M4D M4D 9RXX 9RXX M4D M4D M9E M9E M53 M53 9SXX 9SXX M53 M53 M9D M9D M4K M4K 9TXX 9TXX M4K M4K M9G M9G M4P M4P M4P M4P 9ZXX 9ZXX M4P M4P 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 ADM810JAKS-REEL ADM810JAKS-REEL7 ADM810JAKSZ-REEL1 ADM810JAKSZ-REEL71 ADM810JART-REEL ADM810JART-REEL7 ADM810JARTZ-REEL1 ADM810JARTZ-REEL71 ADM810LAKS-REEL ADM810LAKS-REEL7 ADM810LAKSZ-REEL1 ADM810LAKSZ-REEL71 ADM810LART-REEL ADM810LART-REEL7 ADM810LARTZ-REEL1 ADM810LARTZ-REEL71 ADM810MAKS-REEL ADM810MAKS-REEL7 ADM810MAKSZ-REEL1 ADM810MAKSZ-REEL71 ADM810MART-REEL ADM810MART-REEL7 ADM810MARTZ-REEL1 ADM810MARTZ-REEL71 ADM810RAKS-REEL ADM810RAKS-REEL7 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.63 4.63 4.63 4.63 4.63 4.63 4.63 4.63 4.38 4.38 4.38 4.38 4.38 4.38 4.38 4.38 2.63 2.63 –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C MAC MAC M6V M6V AJXX AJXX M6V M6V MAA MAA M6W M6W ALXX ALXX M6W M6W MAB MAB M6S M6S AMXX AMXX M6S M6S MAF MAF 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 1 REV. F –5– ADM803/ADM809/ADM810 ORDERING GUIDE Model 1 ADM810RAKSZ-REEL ADM810RAKSZ-REEL71 ADM810RART-REEL ADM810RART-REEL7 ADM810RARTZ-REEL1 ADM810RARTZ-REEL71 ADM810SAKS-REEL ADM810SAKS-REEL7 ADM810SAKSZ-REEL1 ADM810SAKSZ-REEL71 ADM810SART-REEL ADM810SART-REEL7 ADM810SARTZ-REEL1 ADM810SARTZ-REEL71 ADM810TAKS-REEL ADM810TAKS-REEL7 ADM810TAKSZ-REEL1 ADM810TAKSZ-REEL71 ADM810TART-REEL ADM810TART-REEL7 ADM810TARTZ-REEL1 ADM810TARTZ-REEL71 ADM810ZAKS-REEL ADM810ZAKS-REEL7 ADM810ZAKSZ-REEL1 ADM810ZAKSZ-REEL71 ADM810ZART-REEL ADM810ZART-REEL7 ADM810ZARTZ-REEL1 ADM810ZARTZ-REEL71 1 Threshold Reset (V) Temperature Range Branding Quantity Package Type 2.63 2.63 2.63 2.63 2.63 2.63 2.93 2.93 2.93 2.93 2.93 2.93 2.93 2.93 3.08 3.08 3.08 3.08 3.08 3.08 3.08 3.08 2.32 2.32 2.32 2.32 2.32 2.32 2.32 2.32 –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C –40∞C to +125∞C M52 M52 ARXX ARXX M52 M52 MAE MAE M6T M6T ASXX ASXX M6T M6T MAD MAD M4V M4V ATXX ATXX M4V M4V MAG MAG M6U M6U AZXX AZXX M6U M6U 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 10k 3k 3k 3k 10k 3k 10k 3k 10k 3k 10k 3k 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SC70 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 3-Lead SOT-23 Z = Pb-free part. –6– REV. F Typical Performance Characteristics–ADM803/ADM809/ADM810 240.0 30 239.5 VCC = 5V 239.0 POWER-DOWN RESET (�s) SUPPLY CURRENT (�A) 25 20 VCC = 3V 15 10 238.5 238.0 237.5 237.0 236.5 236.0 5 235.5 0 –40 –20 0 20 40 TEMPERATURE (�C) 60 235.0 –40 80 85 0 20 40 TEMPERATURE (�C) 60 80 85 TPC 4. Power-Down RESET Delay vs. Temperature ADM8_R TPC 1. Supply Current vs. Temperature (No Load) 1.0020 200 NORMALIZED RESET THRESHOLD VOD = V TH – V CC 180 VOD = 10mV 160 POWER-DOWN RESET (�s) –20 140 120 VOD = 20mV 100 80 60 40 VOD = 100mV 1.0015 1.0010 1.0005 1.0000 0.9995 20 0 –40 VOD = 200mV –20 0 20 40 TEMPERATURE (�C) 60 80 85 0.9990 –40 0 –20 20 40 TEMPERATURE (�C) 60 80 85 TPC 5. Normalized RESET Voltage Threshold vs. Temperature TPC 2. Power-Down RESET Delay vs. Temperature ADM8_L/M/J 180 VOD = V TH – V CC POWER-DOWN RESET (�s) 160 VOD = 10mV 140 SUPPLY VOLTAGE 5VP-P 120 100 T VOD = 20mV RESET OUTPUT VOLTAGE 1 80 60 ADM809T ADM809R 40 VOD = 100mV 20 0 –40 –20 0 20 40 TEMPERATURE (�C) 60 80 85 CH1 TPC 3. Power-Down RESET Delay vs. Temperature ADM8_T/S/R/Z REV. F T 2 VOD = 200mV 2.00V CH2 2.00V M 200ms CH1 2.00V TPC 6. RESET Output Voltage vs. Supply Voltage –7– ADM803/ADM809/ADM810 MAXIMUM TRANSIENT DURATION (�s) 400 Benefits of an Accurate Reset Threshold In other microprocessor supervisory circuits, tolerances in supply voltages lead to an overall increase in reset tolerance levels due to the deterioration of the microprocessor reset circuit’s power supply. The possibility of a malfunction during a power failure is greatly reduced because the ADM803/ADM809/ADM810 series can operate effectively even when there are large degradations of the supply voltages. Another advantage of the ADM803/ ADM809/ADM810 series is its very accurate internal voltage reference circuit. These benefits combine to produce an excep­ tionally reliable voltage monitor circuit. 350 300 250 200 ADM8_L/M/J 150 100 ADM8_R/S/T/Z Interfacing to Microprocessors with Multiple Interrupts 50 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 4, or can be used as a standalone device. 0 1 10 100 RESET COMPARATOR OVERDRIVE, V TH – V CC (mV) 1000 TPC 7. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive INTERFACING TO OTHER DEVICES’ OUTPUT 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 this device to other devices. PRIORITY ENCODER 74LS147 4-LINE BCD TO MICROPROCESSOR VCC VCC Ensuring a Valid Reset Output Down to V CC = 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 kW resistor should be connected from RESET to ground. ADM809 RESET OTHER SENSING DEVICES GND VCC Figure 4. Interfacing to Microprocessors with Multiple Interrupts VCC ADM809 RESET GND Figure 3. Ensuring a Valid Reset Output Down to VCC = 0 V –8– REV. F ADM803/ADM809/ADM810 OUTLINE DIMENSIONS 3-Lead Small Outline Transistor Package [SOT-23-3] (RT-3) Dimensions shown in millimeters 3-Lead Thin Shrink Small Outline Transistor Package [SC70] (KS-3) Dimensions shown in millimeters REV. F –9– ADM803/ADM809/ADM810 Revision History Location Page 6/05—Data Sheet changed from REV. E to REV. F. Changes to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2/05—Data Sheet changed from REV. D to REV. E. Changes to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2/05—Data Sheet changed from REV. C to REV. D. Changes to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5/03—Data Sheet changed from 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—Data Sheet changed from 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—Data Sheet changed from 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 –10– REV. F –11– –12– C03736–0–6/05(F)