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a Open-Drain Microprocessor Supervisory Circuit in 4-Lead SOT-143 ADM6315 FUNCTIONAL BLOCK DIAGRAM GND VREF VCC FEATURES Superior Upgrade for MAX6315 Specified Over Temperature Low Power Consumption (5 A Typ) Precision Voltage Monitor of Voltages from 2.5 V to 5 V at 100 mV Increments Reset Assertion Down to VCC > 1 V Built-In Manual Reset Pin Compatible with the ADM811 APPLICATIONS Microprocessor Systems Controllers Intelligent Instruments Automotive Systems Safety Systems Portable Instruments ADM6315 RESET RESET CIRCUITRY DEBOUNCE MR VCC GENERAL DESCRIPTION SYSTEM POWER The ADM6315 is a reliable voltage monitoring device that is suitable for use in most voltage monitoring applications. The ADM6315 is designed to monitor as little as a 1.8% degradation of a power supply voltage. Voltages that can be monitored by the ADM6315 are all voltages (at 100 mV increments) from 2.5 V to 5 V. Included in this circuit is a debounced Manual Reset input. Reset can be activated using an ordinary switch (pulling MR low), by a low input from another digital device or by a degradation of the supply voltage. The manual reset function is very useful, especially if the circuit in which the ADM6315 is operating, enters into a state that can only be detected by the user. Allowing the user to manually reset a system can reduce the damage or danger that could be otherwise caused by an out of control or locked-up system. The ADM6315 comes in a cost and space efficient SOT-143 package. MR ADM6315 RESET 10k P SYSTEM RESET GND GND Figure 1. Typical Operating Circuit REV. 0 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 (c) Analog Devices, Inc., 1999 ADM6315-SPECIFICATIONS (V Parameter SUPPLY Operating Voltage VCC Supply Current RESET VOLTAGE THRESHOLD (VTH)1 Min CC = Full Operating Range, TA = TMIN to TMAX, VCC Typ = 5 V unless otherwise noted) Typ Max Units Test Conditions/Comments 1.0 5 4 VTH - 1.8% VTH - 2.5% VTH 5.5 12 12 VTH + 1.8% VTH + 2.5% V A A V V ppm/C s TA = 0C to +70C VCC = 5.5 V (No Load) VCC = 3.6 V (No Load) TA = +25C TA = 0C to +70C RESET THRESHOLD TEMPERATURE COEFFICIENT VCC TO RESET DELAY RESET ACTIVE TIMEOUT PERIOD 1 20 140 1120 0.8 60 35 1.4 28 200 1570 2.6 53 370 2960 VCC = Falling at 1 mV/s ADM6315xxD1 ADM6315xxD2 ADM6315xxD3 ADM6315xxD4 VTH > 4.0 V (VIL) VTH > 4.0 V (VIH) VTH < 4.0 V (VIL) VTH < 4.0 V (VIH) ms ms ms ms V V V V s ns ns k V V V A MANUAL RESET Input Threshold 2.4 0.3 VCC 0.7 VCC Minimum Input Pulse Glitch Rejection To Reset Delay Pull-Up Resistance RESET OUTPUT Output Voltage 1 100 500 63 32 100 0.4 0.3 0.3 1 Output Leakage Current VCC > 4.25 V, ISINK = 3.2 mA VCC > 2.5 V, ISINK = 1.2 mA VCC > 1 V, ISINK = 80 mA VCC > VTH, RESET Deasserted NOTES 1 The ADM6315 is available with preset reset threshold values from 2.5 V to 5 V at 100 mV increments. Specifications subject to change without notice. -2- REV. 0 ADM6315 ABSOLUTE MAXIMUM RATINGS* (TA = +25C unless otherwise noted) PIN CONFIGURATION Terminal Voltage (With Respect to Ground) VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to +6 V All Other Inputs . . . . . . . . . . . . . . . . .-0.3 V to VCC + 0.3 V Input Current VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Output Current RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Power Dissipation (TA = +70C) RT-4, SOT-143 Derate by 4 mW/C above +70C . . . . . . . . . . . 320 mW JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . 330C/W Operating Temperature Range . . . . . . . . . . . -40C to +85C Storage Temperature Range . . . . . . . . . . . . -65C to +160C Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . +300C Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . +215C Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . +220C ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 kV *Stresses above those listed under Absolute Maximum Ratings may cause permanent 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. GND 1 ADM6315 TOP VIEW (Not to Scale) 4 VCC RESET 2 3 MR PIN FUNCTION DESCRIPTIONS Pin 1 2 Mnemonic GND RESET Function 0 V. Ground reference for all signals. Active Low Logic Output. RESET remains low while VCC is below the reset threshold or when MR is low, RESET then remains low for either 1 ms (min), 20 ms (min), 140 ms (min) or 1120 ms (min) after VCC rises above the reset threshold and MR is high. Manual Reset. This active low debounced input will ignore input pulses of 100 ns (typical) and is guaranteed to accept input pulses of greater than 1 s. Leave floating when not used. Monitored supply voltage. 3 MR 4 VCC ORDERING GUIDE Model ADM6315-xxxxxxx-xx* *Refer to Tables I to IV. Temperature Range -40C to +85C Package Description Plastic Surface Mount Package Option SOT-143 REV. 0 -3- ADM6315 -Typical Performance Characteristics 10 800 8 VCC = 5.5 MAXIMUM TRANSIENT DURATION - s 80 100 125 700 600 500 400 300 200 100 0 IDD - A 6 VCC = 3 4 2 VCC = 1 0 -40 -100 -20 0 20 40 60 TEMPERATURE - C 0 4 8 20 60 100 400 800 1200 RESET COMPARATOR OVERDRIVE, VTH-VCC - mV 1600 Figure 2. Supply Current vs. Temperature Figure 5. Maximum Transient Duration vs. RESET Comparator Overdrive 450 400 1.005 POWER-DOWN RESET DELAY - s 350 300 250 200 150 100 50 0 -40 VOD = 125mV VOD = 200mV -20 0 20 40 60 TEMPERATURE - C 80 100 125 VOD = 20mV NORMALIZED THRESHOLD - V 1.000 0.995 0.990 -40 -20 0 20 40 60 TEMPERATURE - C 80 100 125 Figure 3. Power-Down Reset Delay vs. Temperature Figure 6. Normalized Reset Threshold vs. Temperature (VCC Falling) 1.06 12 +85 C NORMALIZED RESET TIMEOUT - ms 1.04 A 10 1.02 SUPPLY CURRENT - 8 1.00 6 +25 C 4 -40 C 0.98 0.96 2 0.94 -40 0 -20 0 20 40 60 TEMPERATURE - C 80 100 125 0 1 2 3 SUPPLY VOLTAGE - V 4 5 Figure 4. Normalized Reset Timeout Period vs. Temperature (VCC Rising) Figure 7. Supply Current vs. Supply Voltage -4- REV. 0 ADM6315 INTERFACING TO OTHER DEVICES OUTPUT The ADM6315 series is designed to integrate with as many devices as possible. One feature of the ADM6315 is the RESET open drain output, which can sink current from sources with a voltage greater than the VCC of the ADM6315 input making it suitable for use in more diverse applications. THE BENEFITS OF A VERY ACCURATE RESET THRESHOLD The MR input will (typical) ignore negative going pulses faster than 100 ns and is guaranteed to accept any negative going input pulse of a duration greater than or equal to 1 s. If MR is connected to long cables or used in a noisy environment, then placing a 1 F decoupling capacitor between the MR input and ground will further improve the glitch immunity of the ADM6315. VCC TRIP-POINT (MAX) VCC TRIP-POINT VCC TRIP-POINT (MIN) VCC RESET ACTIVE TIMEOUT Because the ADM6315 series can operate effectively even when there are large degradations of the supply voltages (due to an accurate internal voltage reference circuit), the possibility of a malfunction during a power failure is greatly reduced. VCC VCC TRIP-POINT(MAX) VCC TRIP-POINT VCC TRIP-POINT(MIN) RST VCC TO RESET DELAY RST Figure 9. VCC Power-Up Timing Diagram TRANSIENT IMMUNITY VOL As well as being an accurate reset circuit, the ADM6315 has good immunity to negative going transients (Figure 5). Because of this characteristic, the ADM6315 is suitable for use in noisy environments. Figure 5 shows the reset comparator overdrive (the maximum magnitude of negative going pulses with respect to the typical reset threshold) versus pulse duration, without causing a reset. Figure 8. VCC Power-Down/Brownout Timing Diagram DETAILED DESCRIPTION The ADM6315 is designed to protect the integrity of a systems operation by ensuring the proper operation of the system during power-up, power-down and brownout conditions. When the ADM6315 is powered-up (depending on the selected reset active timeout), the RESET output of the ADM6315 will remain low for a period typically equalling the Reset Active Timeout Period. This is designed to give the system time to power-up correctly and for the power supply to stabilize before any devices are brought out of reset and allowed to begin executing instructions. Initializing a system in this way provides a more reliable start-up for microprocessor systems. When a brownout condition occurs (assuming VCC is falling at 1 mV/s), the ADM6315 will produce a reset in typically 35 s. Producing a reset this fast means that the entire system can be reset together before any part of the systems' voltage falls below its recommended operating voltage. This can avoid dangerous and/or erroneous operation of a microprocessor-based system. MANUAL RESET INPUT The ADM6315 also provides an additional input, MR. This input can be used as either a means for the system operator to manually reset the system via a switch or for a digital circuit to reset the system. REV. 0 -5- ADM6315 Table I. Table II. Model* ADM6315-50D1ART-RL7 ADM6315-50D1ART-RL ADM6315-49D1ART-RL7 ADM6315-49D1ART-RL ADM6315-48D1ART-RL7 ADM6315-48D1ART-RL ADM6315-47D1ART-RL7 ADM6315-47D1ART-RL ADM6315-46D1ART-RL7 ADM6315-46D1ART-RL ADM6315-45D1ART-RL7 ADM6315-45D1ART-RL ADM6315-44D1ART-RL7 ADM6315-44D1ART-RL ADM6315-43D1ART-RL7 ADM6315-43D1ART-RL ADM6315-42D1ART-RL7 ADM6315-42D1ART-RL ADM6315-41D1ART-RL7 ADM6315-41D1ART-RL ADM6315-40D1ART-RL7 ADM6315-40D1ART-RL ADM6315-39D1ART-RL7 ADM6315-39D1ART-RL ADM6315-38D1ART-RL7 ADM6315-38D1ART-RL ADM6315-37D1ART-RL7 ADM6315-37D1ART-RL ADM6315-36D1ART-RL7 ADM6315-36D1ART-RL ADM6315-35D1ART-RL7 ADM6315-35D1ART-RL ADM6315-34D1ART-RL7 ADM6315-34D1ART-RL ADM6315-33D1ART-RL7 ADM6315-33D1ART-RL ADM6315-32D1ART-RL7 ADM6315-32D1ART-RL ADM6315-31D1ART-RL7 ADM6315-31D1ART-RL ADM6315-30D1ART-RL7 ADM6315-30D1ART-RL ADM6315-29D1ART-RL7 ADM6315-29D1ART-RL ADM6315-28D1ART-RL7 ADM6315-28D1ART-RL ADM6315-27D1ART-RL7 ADM6315-27D1ART-RL ADM6315-26D1ART-RL7 ADM6315-26D1ART-RL ADM6315-25D1ART-RL7 ADM6315-25D1ART-RL TripPoint 5.00 5.00 4.90 4.90 4.80 4.80 4.70 4.70 4.63 4.63 4.50 4.50 4.39 4.39 4.30 4.30 4.20 4.20 4.10 4.10 4.00 4.00 3.90 3.90 3.80 3.80 3.70 3.70 3.60 3.60 3.50 3.50 3.40 3.40 3.30 3.30 3.20 3.20 3.08 3.08 3.00 3.00 2.93 2.93 2.80 2.80 2.70 2.70 2.63 2.63 2.50 2.50 Min Timeout (ms) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Brand MDZ MDZ MDY MDY MDX MDX MDW MDW MDV MDV MDU MDU MDT MDT MDS MDS MDR MDR MDQ MDQ MDP MDP MDO MDO MDN MDN MDM MDM MDL MDL MDK MDK MDJ MDJ MDI MDI MDH MDH MDG MDG MDF MDF MDE MDE MDD MDD MDC MDC MDB MDB MDA MDA Model* ADM6315-50D2ART-RL7 ADM6315-50D2ART-RL ADM6315-49D2ART-RL7 ADM6315-49D2ART-RL ADM6315-48D2ART-RL7 ADM6315-48D2ART-RL ADM6315-47D2ART-RL7 ADM6315-47D2ART-RL ADM6315-46D2ART-RL7 ADM6315-46D2ART-RL ADM6315-45D2ART-RL7 ADM6315-45D2ART-RL ADM6315-44D2ART-RL7 ADM6315-44D2ART-RL ADM6315-43D2ART-RL7 ADM6315-43D2ART-RL ADM6315-42D2ART-RL7 ADM6315-42D2ART-RL ADM6315-41D2ART-RL7 ADM6315-41D2ART-RL ADM6315-40D2ART-RL7 ADM6315-40D2ART-RL ADM6315-39D2ART-RL7 ADM6315-39D2ART-RL ADM6315-38D2ART-RL7 ADM6315-38D2ART-RL ADM6315-37D2ART-RL7 ADM6315-37D2ART-RL ADM6315-36D2ART-RL7 ADM6315-36D2ART-RL ADM6315-35D2ART-RL7 ADM6315-35D2ART-RL ADM6315-34D2ART-RL7 ADM6315-34D2ART-RL ADM6315-33D2ART-RL7 ADM6315-33D2ART-RL ADM6315-32D2ART-RL7 ADM6315-32D2ART-RL ADM6315-31D2ART-RL7 ADM6315-31D2ART-RL ADM6315-30D2ART-RL7 ADM6315-30D2ART-RL ADM6315-29D2ART-RL7 ADM6315-29D2ART-RL ADM6315-28D2ART-RL7 ADM6315-28D2ART-RL ADM6315-27D2ART-RL7 ADM6315-27D2ART-RL ADM6315-26D2ART-RL7 ADM6315-26D2ART-RL ADM6315-25D2ART-RL7 ADM6315-25D2ART-RL TripPoint 5.00 5.00 4.90 4.90 4.80 4.80 4.70 4.70 4.63 4.63 4.50 4.50 4.39 4.39 4.30 4.30 4.20 4.20 4.10 4.10 4.00 4.00 3.90 3.90 3.80 3.80 3.70 3.70 3.60 3.60 3.50 3.50 3.40 3.40 3.30 3.30 3.20 3.20 3.08 3.08 3.00 3.00 2.93 2.93 2.80 2.80 2.70 2.70 2.63 2.63 2.50 2.50 Min Timeout (ms) 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 Brand MEZ MEZ MEY MEY MEX MEX MEW MEW MEV MEV MEU MEU MET MET MES MES MER MER MEQ MEQ MEP MEP MEO MEO MEN MEN MEM MEM MEL MEL MEK MEK MEJ MEJ MEI MEI MEH MEH MEG MEG MEF MEF MEE MEE MED MED MEC MEC MEB MEB MEA MEA NOTES ADM6315-xxxxxxx-RL7 are in reels of 3,000 pieces. ADM6315-xxxxxxx-RL are in reels of 10,000 pieces. *Only available in reels. -6- REV. 0 ADM6315 Table III. Table IV. Model* ADM6315-50D3ART-RL7 ADM6315-50D3ART-RL ADM6315-49D3ART-RL7 ADM6315-49D3ART-RL ADM6315-48D3ART-RL7 ADM6315-48D3ART-RL ADM6315-47D3ART-RL7 ADM6315-47D3ART-RL ADM6315-46D3ART-RL7 ADM6315-46D3ART-RL ADM6315-45D3ART-RL7 ADM6315-45D3ART-RL ADM6315-44D3ART-RL7 ADM6315-44D3ART-RL ADM6315-43D3ART-RL7 ADM6315-43D3ART-RL ADM6315-42D3ART-RL7 ADM6315-42D3ART-RL ADM6315-41D3ART-RL7 ADM6315-41D3ART-RL ADM6315-40D3ART-RL7 ADM6315-40D3ART-RL ADM6315-39D3ART-RL7 ADM6315-39D3ART-RL ADM6315-38D3ART-RL7 ADM6315-38D3ART-RL ADM6315-37D3ART-RL7 ADM6315-37D3ART-RL ADM6315-36D3ART-RL7 ADM6315-36D3ART-RL ADM6315-35D3ART-RL7 ADM6315-35D3ART-RL ADM6315-34D3ART-RL7 ADM6315-34D3ART-RL ADM6315-33D3ART-RL7 ADM6315-33D3ART-RL ADM6315-32D3ART-RL7 ADM6315-32D3ART-RL ADM6315-31D3ART-RL7 ADM6315-31D3ART-RL ADM6315-30D3ART-RL7 ADM6315-30D3ART-RL ADM6315-29D3ART-RL7 ADM6315-29D3ART-RL ADM6315-28D3ART-RL7 ADM6315-28D3ART-RL ADM6315-27D3ART-RL7 ADM6315-27D3ART-RL ADM6315-26D3ART-RL7 ADM6315-26D3ART-RL ADM6315-25D3ART-RL7 ADM6315-25D3ART-RL TripPoint 5.00 5.00 4.90 4.90 4.80 4.80 4.70 4.70 4.63 4.63 4.50 4.50 4.39 4.39 4.30 4.30 4.20 4.20 4.10 4.10 4.00 4.00 3.90 3.90 3.80 3.80 3.70 3.70 3.60 3.60 3.50 3.50 3.40 3.40 3.30 3.30 3.20 3.20 3.08 3.08 3.00 3.00 2.93 2.93 2.80 2.80 2.70 2.70 2.63 2.63 2.50 2.50 Min Timeout (ms) 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 140 Brand MFZ MFZ MFY MFY MFX MFX MFW MFW MFV MFV MFU MFU MFT MFT MFS MFS MFR MFR MFQ MFQ MFP MFP MFO MFO MFN MFN MFM MFM MFL MFL MFK MFK MFJ MFJ MFI MFI MFH MFH MFG MFG MFF MFF MFE MFE MFD MFD MFC MFC MFB MFB MFA MFA Model* ADM6315-50D4ART-RL ADM6315-50D4ART-RL7 ADM6315-49D4ART-RL ADM6315-49D4ART-RL7 ADM6315-48D4ART-RL ADM6315-48D4ART-RL7 ADM6315-47D4ART-RL ADM6315-47D4ART-RL7 ADM6315-46D4ART-RL ADM6315-46D4ART-RL7 ADM6315-45D4ART-RL ADM6315-45D4ART-RL7 ADM6315-44D4ART-RL ADM6315-44D4ART-RL7 ADM6315-43D4ART-RL ADM6315-43D4ART-RL7 ADM6315-42D4ART-RL ADM6315-42D4ART-RL7 ADM6315-41D4ART-RL ADM6315-41D4ART-RL7 ADM6315-40D4ART-RL ADM6315-40D4ART-RL7 ADM6315-39D4ART-RL ADM6315-39D4ART-RL7 ADM6315-38D4ART-RL ADM6315-38D4ART-RL7 ADM6315-37D4ART-RL ADM6315-37D4ART-RL7 ADM6315-36D4ART-RL ADM6315-36D4ART-RL7 ADM6315-35D4ART-RL ADM6315-35D4ART-RL7 ADM6315-34D4ART-RL ADM6315-34D4ART-RL7 ADM6315-33D4ART-RL ADM6315-33D4ART-RL7 ADM6315-32D4ART-RL ADM6315-32D4ART-RL7 ADM6315-31D4ART-RL ADM6315-31D4ART-RL7 ADM6315-30D4ART-RL ADM6315-30D4ART-RL7 ADM6315-29D4ART-RL ADM6315-29D4ART-RL7 ADM6315-28D4ART-RL ADM6315-28D4ART-RL7 ADM6315-27D4ART-RL ADM6315-27D4ART-RL7 ADM6315-26D4ART-RL ADM6315-26D4ART-RL7 ADM6315-25D4ART-RL ADM6315-25D4ART-RL7 TripPoint 5.00 5.00 4.90 4.90 4.80 4.80 4.70 4.70 4.63 4.63 4.50 4.50 4.39 4.39 4.30 4.30 4.20 4.20 4.10 4.10 4.00 4.00 3.90 3.90 3.80 3.80 3.70 3.70 3.60 3.60 3.50 3.50 3.40 3.40 3.30 3.30 3.20 3.20 3.08 3.08 3.00 3.00 2.93 2.93 2.80 2.80 2.70 2.70 2.63 2.63 2.50 2.50 Min Timeout (ms) 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 1120 Brand MGZ MGZ MGY MGY MGX MGX MGW MGW MGV MGV MGU MGU MGT MGT MGS MGS MGR MGR MGQ MGQ MGP MGP MGO MGO MGN MGN MGM MGM MGL MGL MGK MGK MGJ MGJ MGI MGI MGH MGH MGG MGG MGF MGF MGE MGE MGD MGD MGC MGC MGB MGB MGA MGA NOTES All parts in bold are ex-stock. Consult factory for availability of orders. ADM6315-xxxxxxx-RL7 are in reels of 3,000 pieces. ADM6315-xxxxxxx-RL are in reels of 10,000 pieces. *Only available in reels. REV. 0 -7- ADM6315 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 4-Lead Plastic Surface Mount Package (SOT-143) 0.079 (2.00) 0.071 (1.80) 4 3 0.055 (1.40) 0.047 (1.20) 1 2 0.098 (2.50) 0.083 (2.10) PIN 1 0.080 (2.03) 0.070 (1.78) 0.120 (3.05) 0.105 (2.67) 0.040 (1.02) 0.031 (0.79) 0.021 (0.54) 0.015 (0.38) 0.0059 (0.089) 0.0035 (0.15) 8 0 0.010 (0.25) 0.005 (0.13) 7 0.004 (0.10) 0.001 (0.03) SEATING 0.037 (0.94) PLANE 0.030 (0.77) -8- REV. 0 PRINTED IN U.S.A. C3460-8-3/99 |
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