ADM8641-EVALZ

Ultralow Power Voltage Detector ADM8641/ADM8642 Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAMS VCC ADM8641 DIS OUT V TH 12781-001 Ultralow power consumption with ICC = 92 nA (typical) Precision, low voltage monitoring Pretrimmed voltage monitoring threshold options 10 options from 2 V to 4.63 V for the ADM8641 20 options from 0.5 V to 1.9 V for the ADM8642 ±1.3% threshold accuracy over full temperature range Output disable input 23 μs to 26 μs typical propagation delay Open-drain type output Power supply glitch immunity Available in a 1.46 mm × 0.96 mm WLCSP Operational temperature range: −40°C to +85°C GND Figure 1. ADM8641 Functional Block Diagram VCC ADM8642 APPLICATIONS Portable/battery-operated equipment Microprocessor systems Energy metering Energy harvesting DIS OUT VIN GND 12781-002 V TH Figure 2. ADM8642 Functional Block Diagram GENERAL DESCRIPTION The ADM8641 and ADM8642 are simple voltage detectors suitable for use in general-purpose applications. The ultralow power consumption of these devices makes them suitable for power efficiency sensitive systems, such as battery-powered portable devices and energy meters. released for sale as standard models. See the Ordering Guide section for full information. The factory preset detection thresholds from 0.5 V to 4.63 V with ±1.2% accuracy over the full temperature range enable the devices to monitor the node of interest accurately with direct contact. The DIS input lets the user hold the output low regardless of the state of the input. Not all device options are The ADM8641 and ADM8642 are available in a 6-ball, 1.46 mm × 0.96 mm WLCSP. These devices are specified over the −40°C to +85°C temperature range. Rev. D The ADM8641 monitors the voltage using the VCC pin. The separate supply pin on the ADM8642 allows it to have a lower detection threshold down to 0.5 V. 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 ©2015–2021 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADM8641/ADM8642 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1  Theory of Operation .........................................................................9  Applications ...................................................................................... 1  Voltage Monitoring Input ...........................................................9  Functional Block Diagrams............................................................. 1  VIN as an Adjustable Input .........................................................9  General Description ......................................................................... 1  Transient Immunity .....................................................................9  Revision History ............................................................................... 2  Output.............................................................................................9  Specifications .................................................................................... 3  Disable Input .................................................................................9  Absolute Maximum Ratings ........................................................... 5  Device Model Options ................................................................... 10  Thermal Resistance ...................................................................... 5  Outline Dimensions ....................................................................... 11  ESD Caution.................................................................................. 5  Ordering Guide .......................................................................... 11  Pin Configurations and Function Descriptions ........................... 6  Typical Performance Characteristics ............................................. 7  REVISION HISTORY 5/2021—Rev. C to Rev. D Added VCC Slew Rate Consideration Section ............................. 9 1/2016—Rev. A to Rev. B Changes to Ordering Guide .......................................................... 11 1/2018—Rev. B to Rev. C Changes to General Description .................................................... 1 Added Note 1 to Table 1.................................................................. 3 Changed Out Output Parameter, Table 1 to Out Pin Output Parameter, Table 1, DIS Input Parameter, Table 1 to DIS Pin Input Parameter, Table 1 .................................................................. 4 Changed Device Options Section to Device Model Options Section .............................................................................................. 10 Changes to Device Model Options Section ................................ 10 Changes to Ordering Guide .......................................................... 11 4/2015—Rev. 0 to Rev. A Changes to Threshold Hysteresis Parameter, Table 1 .................3 1/2015—Revision 0: Initial Version Rev. D | Page 2 of 11 Data Sheet ADM8641/ADM8642 SPECIFICATIONS VCC = 2 V to 5.5 V, VIN < VCC + 0.3 V, TA = −40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C. Table 1. Parameter OPERATING VOLTAGE RANGE ADM8641 ADM8642 UNDERVOLTAGE LOCKOUT Input Voltage Rising Input Voltage Falling Hysteresis INPUT CURRENT VCC Quiescent Current VIN Average Input Current Symbol VCC Min Typ 0.9 2 0.9 UVLORISE UVLOFALL UVLOHYS Max Unit Test Conditions/Comments 5.5 5.5 V V V Guarantees valid OUT output Guarantees valid OUT output Guarantees OUT low ADM8642 only 1.95 V V mV nA nA nA nA V V V V V V V V V V V V V V VCC = 2 V to 5.5 V, OUT pulled high TA = 25°C, OUT pulled high VIN = 2 V, VCC = 2 V VIN = 2 V, VCC = 5.5 V Input falling See Table 6 See Table 7, VTH ≥ 1.2 V 1.1 V threshold option 1 V threshold option 0.95 V threshold option 0.9 V threshold option 0.85 V threshold option 0.8 V threshold option 0.75 V threshold option 0.7 V threshold option 0.65 V threshold option 0.6 V threshold option 0.55 V threshold option 0.5 V threshold option V V mV VTH > 1 V VTH ≤ 1 V μs μs μs μs VCC falling with VTH × 10% overdrive VCC rising with VTH × 10% overdrive VIN falling with VTH × 10% overdrive VIN rising with VTH × 10% overdrive μs μs μs μs VCC falling with VTH × 10% overdrive VCC rising with VTH × 10% overdrive VIN falling with VTH × 10% overdrive VIN rising with VTH × 10% overdrive 1.6 90 ICC 92 IVIN 4 4 190 110 32 8.5 VTH VTH 1.1 1 0.95 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 VTH + 1.3% VTH + 1.3% VTH + 1.4% VTH + 1.6% VTH + 1.6% VTH + 1.7% VTH + 1.8% VTH + 1.8% VTH + 1.9% VTH + 1.9% VTH + 2.0% VTH + 2.1% VTH + 2.1% VTH + 2.2% THRESHOLD VOLTAGE1 ADM8641 ADM8642 VTH THRESHOLD HYSTERESIS ADM8641 ADM8642 VHYST VTH − 1.3% VTH − 1.3% VTH − 1.4% VTH − 1.6% VTH − 1.6% VTH − 1.7% VTH − 1.8% VTH − 1.8% VTH − 1.9% VTH − 1.9% VTH − 2.0% VTH − 2.1% VTH − 2.1% VTH − 2.2% 0.9% × VTH 0.9% × VTH 10.3 PROPAGATION DELAY ADM8641 VCC to OUT tPD_VCC ADM8642 VIN to OUT tPD_VIN INPUT GLITCH REJECTION ADM8641 VCC Glitch Rejection tGR_VCC ADM8642 VIN Glitch Rejection tGR_VIN 18 20.5 13.5 22 26 36 23 39.5 37 57 35 61 23 35 21 38 Rev. D | Page 3 of 11 ADM8641/ADM8642 Parameter OUT PIN OUTPUT Output Voltage Low Leakage Current DIS PIN INPUT VIL VIH DIS Glitch Rejection DIS to OUT Delay DIS Pull-Up Resistance 1 Data Sheet Symbol Min Typ VOUT_OL Max Unit Test Conditions/Comments 0.4 0.4 0.4 0.4 5 V V V V nA VCC > 4.25 V, ISINK = 6.5 mA VCC > 2.5 V, ISINK = 6 mA VCC > 1.2 V, ISINK = 4.6 mA VCC > 0.9 V, ISINK = 0.9 mA VOUT = VCC = 5.5 V 0.4 V V μs μs MΩ 0.9 tD_DIS1 0.5 0.4 0.65 0.6 0.82 Not all device options are released for sale as standard models. See the Ordering Guide section for full information. Rev. D | Page 4 of 11 DIS falling Data Sheet ADM8641/ADM8642 ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Table 2. Parameter VCC OUT VIN DIS Input/Output Current Storage Temperature Range Operating Temperature Range θJA is specified for a device soldered on an FR4 board with a minimum footprint. Rating −0.3 V to +6 V −0.3 V to +6 V −0.3 V to +6 V −0.3 V to VCC + 0.3 V 10 mA −40°C to +150°C −40°C to +85°C Table 3. Package Type 6-Ball WLCSP ESD CAUTION 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. Rev. D | Page 5 of 11 θJA 105.6 Unit °C/W ADM8641/ADM8642 Data Sheet PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS BALLA1 INDICATOR 1 2 VCC GND A DNC GND B DIS OUT TOP VIEW (BALL SIDE DOWN) Not to Scale DNC = DO NO CONNECT. DO NOT CONNECT TO THIS PIN. 12781-003 C Figure 3. ADM8641 Pin Configuration Table 4. ADM8641 Pin Function Descriptions Pin No. A1 Mnemonic VCC A2 B1 B2 C1 C2 GND DNC GND DIS OUT Description Power Supply Input. The voltage on the VCC pin is monitored on the ADM8641. It is recommended to place a 0.1 μF decoupling capacitor between the VCC pin and the GND pin. Ground. Both GND pins on the ADM8641 must be grounded. Do Not Connect. Do not connect to this pin. Ground. Both GND pins on the ADM8641 must be grounded. Active Low Output Disable Input. Open-Drain Detector Output. BALLA1 INDICATOR 1 2 VCC GND A DIS GND VIN OUT B TOP VIEW (BALL SIDE DOWN) Not to Scale 12781-004 C Figure 4. ADM8642 Pin Configuration Table 5. ADM8642 Pin Function Descriptions Pin No. A1 Mnemonic VCC A2 B1 B2 C1 GND DIS GND VIN C2 OUT Description Power Supply Input. The voltage on the VCC pin is not monitored on the ADM8642. It is recommended to place a 0.1 μF decoupling capacitor between the VCC pin and the GND pin. Ground. Both GND pins on the ADM8642 must be grounded. Active Low Output Disable Input. Ground. Both GND pins on the ADM8642 must be grounded. Low Voltage Monitoring Input. This separate supply input allows the ADM8642 to monitor low voltages of 0.8 V on the VIN pin. Open-Drain Detector Output. Rev. D | Page 6 of 11 Data Sheet ADM8641/ADM8642 TYPICAL PERFORMANCE CHARACTERISTICS 8 115 7 110 6 105 5 95 90 85 4 3 2 1 80 0 75 –1 10 20 30 40 50 60 70 80 TEMPERATURE ( °C) –2 0 1.5 2.0 2.5 3.0 3.5 NORMALIZED FALLING THRESHOLD 1.020 2.5 VCC FALLING 2.0 1.5 VCC RISING 1.0 0.5 1.0 1.5 2.0 2.5 SUPPLY VOLTAGE (V) 5.0 5.5 = 0.6V = 2.0V = 3.3V = 4.7V 1.010 1.005 1.000 0.995 0.990 0.985 –20 0 20 40 60 80 TEMPERATURE (°C) Figure 6. Supply Current (ICC) vs. Supply Voltage, VCC < 2 V Figure 9. Normalized Falling Threshold vs. Temperature 120 0.50 RPULLUP = 10kΩ RPULLUP = 100kΩ 0.45 110 OUT PIN VOLTAGE (V) 0.40 100 90 80 0.35 0.30 0.25 0.20 0.15 0.10 70 0.05 60 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) 5.5 12781-007 ICC (nA) 4.5 VTH VTH VTH VTH 1.015 0.980 –40 12781-006 0.5 0 4.0 Figure 8. VIN Pin and VCC Pin Input Current vs. VIN 3.0 ICC (µA) 1.0 VIN (V) Figure 5. Supply Current (ICC) vs. Temperature 0 0.5 12781-115 0 12781-005 70 –40 –30 –20 –10 Figure 7. Supply Current (ICC) vs. Supply Voltage 0 0 0.5 1.0 1.5 2.0 2.5 3.0 VOLTAGE ON VCC (V) Figure 10. OUT Pin Voltage vs. Voltage on VCC (with the OUT Pin Pulled up to the VCC Pin Through RPULLUP) Rev. D | Page 7 of 11 12781-010 ICC (nA) 100 IVIN, VCC = 0V IVIN, VCC = 2V ICC, VCC = 2V 12781-008 INPUT CURRENT (µA) 120 ADM8641/ADM8642 Data Sheet 2.0 400 OUT LOW LEVEL OUTPUT VOLTAGE (V) VIN FALLING VIN RISING TRANSIENT DURATION (µs) 350 300 250 200 150 100 0 1 10 100 INPUT OVERDRIVE (mV) 12781-011 50 1.4 1.2 1.0 0.8 0.6 0.4 VCC VCC VCC VCC 0.2 0 1 2 3 4 5 6 7 8 = 0.9V = 1.2V = 2.5V = 4.25V 9 10 11 12 13 14 15 16 17 18 19 20 ISINK (mA) VCC = 5.5V VCC = 3.3V VCC = 2V 7 VIN PIN LEAKAGE CURRENT (nA) 1.6 Figure 14. OUT Low Level Output Voltage vs. Sink Current (ISINK) Figure 11. Maximum Transient Duration vs. Input Overdrive 8 1.8 12781-014 450 6 5 4 3 2 0 10 20 30 40 50 60 70 80 TEMPERATURE (°C) 12781-114 0 –40 –30 –20 –10 12781-015 1 Figure 12. VIN Pin Leakage Current vs. Temperature Figure 15. OUT Propagation Delay With VCC/VIN Rising 0.30 0.20 0.15 0.10 0.05 0 –0.05 –0.10 –0.20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 OUTPUT VOLTAGE (V) 5.5 12781-016 –0.15 12781-013 OUPUT LEAKAGE CURRENT (nA) 0.25 Figure 16. OUT Propagation Delay With VCC/VIN Falling Figure 13. Output Leakage Current vs. Output Voltage Rev. D | Page 8 of 11 Data Sheet ADM8641/ADM8642 THEORY OF OPERATION 3.3V VCC OUT DIS ADM8641 VIO INPUT VIO VCC INPUT OUT ADM8642 0.8V VIN GND MICROPROCESSOR DIS Figure 19. ADM8642 as an Adjustable Threshold Device TRANSIENT IMMUNITY To avoid unnecessary output state changes caused by fast power supply transients, an input glitch filter is added to the VCC pin of the ADM8641 and the VIN pin of the ADM8642 to filter out the transient glitches on these pins. Figure 11 shows the comparator overdrive (that is, the maximum magnitude of positive and negative going pulses with respect to the typical threshold) vs. the pulse duration without changing the state of the output. MICROPROCESSOR 12781-117 GND 3.3V 12781-119 The ADM8641 and ADM8642 ultralow power voltage detectors are especially suited for battery-powered applications due to the 190 nA quiescent current (maximum). The internal precision reference allows the user to monitor specific voltage levels accurately from 0.5 V to 4.63 V. These devices feature internal input hysteresis and an open-drain output. The output remains logic high after the monitored input is above the preset threshold. The output changes to logic low after the input voltage falls below the threshold. The devices keep the output in a logic low state whenever the supply voltage on the VCC pin is below the UVLO threshold. The output disable input can also keep the output low regardless of the status on the input. Figure 17. ADM8641 Typical Application Circuit OUTPUT 3.3V Both the ADM8641 and ADM8642 voltage detectors have an open-drain output. For the ADM8641, the state of the output is guaranteed to be valid as soon as VCC rises above 0.9 V. For the ADM8642, the output is guaranteed to be logic low from when VCC = 0.9 V to when the device exits ULVO. 12V VIO VCC OUT ADM8642 GND DIS MICROPROCESSOR When the monitored voltage falls below its associated threshold, the OUT pin asserts low after 23 μs to 26 μs (typical). When the monitored voltage rises above the threshold plus hysteresis, the OUT pin asserts high after 36 μs to 39.5 μs (typical). 12781-118 VIN INPUT Figure 18. ADM8642 Typical Application Circuit VOLTAGE MONITORING INPUT DISABLE INPUT The VCC pin on the ADM8641 acts as both a device power input node and a voltage monitoring input node. The ADM8642 uses separate pins for supply and voltage monitoring to achieve a low voltage monitoring threshold to 0.5 V. It is recommended to place a 0.1 μF decoupling capacitor between the VCC pin and the GND pin. The ADM8641/ADM8642 feature a disable input (DIS). Drive the DIS pin low to assert the output low. The DIS input has a 0.6 MΩ internal pull-up resistor so that the input is always high when unconnected. To drive the DIS input, use an external signal or a push-button switch to ground; debounce circuitry is integrated on-chip for this purpose. Noise immunity is provided on the DIS input, and fast, negative going transients of up to 0.4 μs (typical) are ignored. If required, a 0.1 μF capacitor between the DIS pin and ground provides additional noise immunity. VCC Slew Rate Consideration A fast VCC ramp (μs range) on power-up can cause the device to behave in an irregular manner. In applications where a high slew rate on VCC is possible, for example, powering up using a battery pack, it is recommended that an RC filter is used to reduce the slew rate. RC combinations of 3.3 kΩ + 2.2 μF and 1 kΩ + 10 μF have been tested and identified as safe options. VIN AS AN ADJUSTABLE INPUT tPD_VCC tPD_VCC VCC VTH VTH + VHYST OUT DIS Rev. D | Page 9 of 11 DIS EXTERNALLY DRIVEN LOW tD_DIS tD_DIS Figure 20. DIS Input Timing 12781-017 Due to the low leakage nature of the VIN pin, the ADM8642 can be used as a device with an adjustable threshold. Use an external resistor divider circuit to program the desired voltage monitoring threshold based on the VIN threshold, as shown in Figure 19. ADM8641/ADM8642 Data Sheet DEVICE MODEL OPTIONS The ADM8641/ADM8642 include many device options, however, not all options are released for sale. Released options are called standard models and are listed in the Ordering Guide section. The Simple Reset Supervisory IC page also offers a list of standard models. Contact a sales representative for information on nonstandard models and be aware that samples and production units have long lead times. Table 6. ADM8641 VCC Threshold (VTH) Options (TA = −40°C to +85°C) Threshold Number 200 220 232 263 280 293 300 308 440 463 Min 1.974 2.171 2.290 2.596 2.764 2.892 2.961 3.040 4.343 4.570 Typ 2 2.2 2.32 2.63 2.8 2.93 3 3.08 4.4 4.63 Max 2.026 2.229 2.350 2.664 2.836 2.968 3.039 3.120 4.457 4.690 Unit V V V V V V V V V V Max 0.511 0.562 0.612 0.663 0.714 0.764 0.815 0.865 0.915 0.965 1.016 1.116 1.216 1.317 1.418 1.520 1.621 1.722 1.823 1.925 Unit V V V V V V V V V V V V V V V V V V V V Table 7. ADM8642 VIN Threshold (VTH) Options (TA = −40°C to +85°C) Min 0.489 0.538 0.588 0.637 0.686 0.736 0.785 0.835 0.885 0.935 0.984 1.084 1.184 1.283 1.382 1.481 1.579 1.678 1.777 1.875 Typ 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 ADM864_ T_ _ _ACBZ-R7 GENERIC NUMBER (1 OR 2) PACKING MATERIAL R7 = 7" TAPE AND REEL (3000 PIECE QUANTITY) THRESHOLD NUMBER (050 TO 463) Z = LEAD-FREE PACKAGE DESIGNATION CB: WLCSP TEMPERATURE RANGE A: –40°C TO +85°C Figure 21. Ordering Code Structure Rev. D | Page 10 of 11 12781-018 Threshold Number 050 055 060 065 070 075 080 085 090 095 100 110 120 130 140 150 160 170 180 190 Data Sheet ADM8641/ADM8642 OUTLINE DIMENSIONS 1.000 0.960 0.920 BOTTOM VIEW (BALL SIDE UP) 2 1 A BALL A1 IDENTIFIER 1.500 1.460 1.420 1.00 REF 0.50 BSC TOP VIEW (BALL SIDE DOWN) 0.660 0.600 0.540 B C 0.50 BSC 0.390 0.360 0.330 SIDE VIEW COPLANARITY 0.04 PKG-003299 0.270 0.240 0.210 08-25-2014-A 0.360 0.320 0.280 SEATING PLANE Figure 22. 6-Ball Wafer Level Chip Scale Package [WLCSP] (CB-6-17) Dimensions shown in millimeters ORDERING GUIDE Model1, 2, 3 ADM8641T263ACBZ-R7 ADM8642T100ACBZ-R7 ADM8641-EVALZ ADM8642-EVALZ Temperature Range −40°C to +85°C −40°C to +85°C Threshold Voltage (V) 2.63 1.0 Package Description 6-Ball WLCSP 6-Ball WLCSP Evaluation Board Evaluation Board 1 Package Option CB-6-17 CB-6-17 Marking Code DT DU Z = RoHS Compliant Part. ADM8641/ADM8642 include many device options, however, not all options are released for sale. Released options are called standard models and are listed in the Ordering Guide. The Simple Reset Supervisory IC page also offers a list of standard models. Contact a sales representative for information on nonstandard models and be aware that samples and production units have long lead times. 3 If ordering nonstandard models, complete the ordering code shown in Figure 21 by inserting the model number and threshold number. 2 ©2015–2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D12781-5/21(D) Rev. D | Page 11 of 11