View ADM6316_255794.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

PRELIMINARY TECHNICAL DATA
Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
FEATURES
26 reset threshold options: 2.5 V to 5 V in 100 mV increments 4 reset timeout options: 1 ms, 20 ms, 140 ms, and 1120 ms (Min) 4 watchdog timeout options: 6.3 ms, 102 ms, 1600 ms, and 25.6s (Typ) Manual reset input Reset output stages: Push-pull active-low Open-drain active-low Push-pull active-high Low power consumption (3 A) Guaranteed reset output valid to VCC = 1 V Power supply glitch immunity Specified over industrial temperature range 5-lead SOT-23 package
FUNCTIONAL BLOCK DIAGRAM
ADM6316
VCC VREF
VCC RESET GENERATOR
RESET
MR
DEBOUNCE WATCHDOG DETECTOR
04533-0-001
GND
WDI
Figure 1.
APPLICATIONS
Microprocessor systems Computers Controllers Intelligent instruments Portable equipment
GENERAL DESCRIPTION The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are supervisory circuits which monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by means of an external push-button, through a manual reset input. The seven parts feature different combinations of watchdog input, manual reset input and output stage configuration, as shown in Table 1. Table 1. Selection Table
Output Stage Part No. ADM6316 ADM6317 ADM6318 ADM6319 ADM6320 ADM6321 ADM6322
Rev.PrC
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.
Each part is available in a choice of 26 reset threshold options ranging from 2.5 V to 5 V in 100 mV increments. There are also four reset timeout options of 1 ms, 20 ms, 140 ms, and 1120 ms (min) and four watchdog timeout options of 6.3 ms, 102 ms, 1600 ms, and 25.6s (typ). The ADM6316-ADM6322 are available in 5-lead SOT-23 packages and typically consume only 3 A, making them suitable for use in low power portable applications.
Watchdog Yes Yes Yes - Yes Yes -
Manual Reset Yes Yes - Yes Yes Yes
RESET Push-Pull - Push-Pull Push-Pull Open-Drain Open-Drain Open-Drain
RESET - Push-Pull Push-Pull Push-Pull - Push-Pull Push-Pull
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 (c) 2004 Analog Devices, Inc. All rights reserved.
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
TABLE OF CONTENTS
Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ..............................................7 Outline Dimensions ....................................................................... 10 Ordering Guide .......................................................................... 11
Rev.PrC | Page 2 of 11
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
SPECIFICATIONS
VCC = full operating range, TA = TMIN to TMAX, unless otherwise noted. Table 2.
Parameter SUPPLY VCC Operating Voltage Range Supply Current RESET THRESHOLD VOLTAGE VTH - 1.5% VTH - 2.5% RESET THRESHOLD TEMPERATURE COEFFICIENT RESET THRESHOLD HYSTERESIS RESET TIMEOUT PERIOD ADM63__A ADM63__B ADM63__C ADM63__D VCC TO RESET DELAY PUSH-PULL OUTPUT (ADM6316, ADM6317, ADM6318, ADM6319, ADM6321, ADM6322) RESET Output Voltage VTH VTH 40 3 1 20 140 1120 1.4 28 200 1600 40 2 40 280 2240 VTH + 1.5% VTH + 2.5% V V ppm/C mV ms ms ms ms s TA = +25C TA = -40C to +85C Min 1 10 5 Typ Max 5.5 20 12 Unit V A A Test Conditions/Comments
VCC = 5.5 V VCC = 3.6 V
VCC falling at 1 mV/s
0.3 0.3 0.3 0.4 0.8 x VCC VCC - 1.5
RESET Rise Time RESET Output Voltage 0.8 x VCC 0.8 x VCC VCC - 1.5 OPEN-DRAIN OUTPUT (ADM6320, ADM6321, ADM6322) RESET Output Voltage
5
25 0.3 0.4
V V V V V V ns V V V V
VCC> = 1.0 V, ISINK = 50 A VCC> = 1.2 V, ISINK = 100 A VCC> = 2.7 V, ISINK = 1.2 mA VCC> = 4.5 V, ISINK = 3.2 mA VCC> = 2.7 V, ISOURCE = 500 A VCC> = 4.5 V, I SOURCE = 800 A From 10% to 90% VCC, CL = 5 pF, VCC = 3.3 V VCC > = 2.7 V, ISINK = 1.2 mA VCC > = 4.5 V, ISINK = 3.2 mA VCC > = 1.8 V, ISOURCE = 150 A VCC > = 2.7 V, ISOURCE = 500 A VCC > = 4.5 V, I SOURCE = 800 A
Open-Drain Reset Output Leakage Current WATCHDOG INPUT (ADM6316, ADM6317, ADM6318, ADM6320, ADM6321) Watchdog Timeout Period
0.3 0.3 0.3 0.4 1
V V V V A
VCC > = 1.0 V, ISINK = 50 A VCC > = 1.2 V, ISINK = 100 A VCC > = 2.7 V, ISINK = 1.2 mA VCC > = 4.5 V, ISINK = 3.2 mA
WDI Pulse Width
4.3 71 1.12 17.9 50
6.3 102 1.6 25.6
9.3 153 2.4 38.4
ms ms s s ns
ADM63___W ADM63___X ADM63___Y ADM63___Z VIL = 0.3 x VCC, VIH = 0.7 x VCC,
Rev.PrC | Page 3 of 11
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
Parameter WDI Input Threshold WDI Input Current -20 MANUAL RESET INPUT (ADM6316, ADM6317, ADM6319, ADM6320, ADM6322) MR Input Threshold Min 0.3 x VCC Typ Max 0.7 x VCC 160 Unit V V A A Test Conditions/Comments
120 -15
VWDI = VCC, time average VWDI = 0, time average
0.8 2.0 0.3 x VCC 0.7 x VCC
MR Input Pulse Width MR Glitch Rejection MR Pull-up Resistance MR to Reset Delay
1 35 100 52 230 75
V V V V s ns k ns
VTH > 4.0 V VTH > 4.0 V VTH <4.0 V VTH < 4.0 V
VCC = 5V
Rev.PrC | Page 4 of 11
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
ABSOLUTE MAXIMUM RATINGS
TA = 25C, unless otherwise noted. Table 3.
Parameter VCC RESET (ADM6320, ADM6321, ADM6322) Output Current (RESET, RESET) Operating Temperature Range Storage Temperature Range JA Thermal Impedance, SOT-23 Lead Temperature Soldering (10 sec) Vapour Phase (60 sec) Infrared (15 sec) Rating -0.3 V to +6 V -0.3 V to +6 V 20 mA -40C to +85C -65C to +125C 270C/W 300C 215C 220C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ESD 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 this product features 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.PrC | Page 5 of 11
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
RESET 1 GND 2 MR 3
5
VCC
RESET 1
5
VCC
ADM6316/ ADM6320
04533-0-002
ADM6317
GND 2
4
04533-0-003 04533-0-004
TOP VIEW (Not to Scale)
TOP VIEW (Not to Scale)
4
WDI
MR 3
WDI
Figure 2. ADM6316/ADM6320 Pin Configuration
Figure 3. ADM6317 Pin Configuration
RESET 1 GND 2 RESET 3
5
VCC
RESET 1 GND 2
5
VCC
ADM6318/ ADM6321
TOP VIEW (Not to Scale)
4
ADM6319/ ADM6322
TOP VIEW (Not to Scale)
4
WDI
04533-0-004
RESET 3
MR
Figure 4. ADM6318/ADM6321 Pin Configuration
Figure 5. ADM6319/ADM6322 Pin Configuration
Table 4. Pin Function Descriptions
Pin No. 1 Mnemonic RESET (ADM6316/ADM6318/ ADM6319/ADM6320/ADM6321/ ADM6322) RESET (ADM6317) GND MR (ADM6316/ADM6317/ ADM6320) RESET (ADM6318/ADM6319/ ADM6321/ADM6322) WDI (ADM6316/ADM6317/ ADM6318/ADM6320/ADM6321) MR (ADM6319/ADM6322) VCC Description Active-Low Reset Output. Asserted whenever VCC is below the reset threshold, VTH. Push-Pull Output Stage for the ADM6316/ADM6318/ADM6319. Open-Drain Output Stage for the ADM6320/ADM6321/ADM6322. Active-High, Push-Pull Reset Output. Ground. Manual Reset Input. This is an active-low input which, when forced low for at least 1 s, generates a reset. It features a 52 k internal pull-up. Active-High, Push-Pull Reset Output. Watchdog Input. Generates a reset if the logic level on the pin remains low or high for the duration of the watchdog timeout. The timer is cleared if a logic transition occurs on this pin or if a reset is generated. Leave floating to disable the watchdog timer. Manual Reset Input. Power Supply Voltage Being Monitored.
2 3
4
5
Rev.PrC | Page 6 of 11
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
TYPICAL PERFORMANCE CHARACTERISTICS
10.0 9.5 9.0 8.5 8.0 7.5 VCC = 5V
100 90 80
VCC TO RESET DELAY (s)
VCC = 1.5V
04533-0-006
70 60 50 40 30 20 10
ICC (A)
7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 -40 -20 0 VCC = 3V
20 40 TEMPERATURE (C)
60
80
0 -40
-20
0
20 40 TEMPERATURE (C)
60
80
Figure 6. Supply Current vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321)
80
Figure 9. VCC Falling to Reset Propagation Delay vs. Temperature
MANUAL RESET TO RESET DELAY (ns)
75 70 65 60 55 50 45 40 35 30 25 20 15 10
04533-0-007
340 320 300 280 260 240 220 200 180 160 140 120 100 -40 -20 0 20 40 TEMPERATURE (C) 60 80
04533-0-010 04533-0-011
ICC (A)
5 0
0
0.5
1.0
1.5
2.0
2.5 3.0 VCC (V)
3.5
4.0
4.5
5.0
5.5
Figure 7. Supply Current vs. Supply Voltage
1.05 1.04
Figure 10. Manual Reset to Reset Propagation Delay vs. Temperature (ADM6316/ADM6317/ADM6319/ADM6320/ADM6322)
1.20 1.15
NORMALIZED RESET THRESHOLD
NORMALIZED RESET TIMEOUT
1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 -40
04533-0-008
1.10 1.05 1.00 0.95 0.90 0.85 0.80 -40
-20
0
20 40 TEMPERATURE (C)
60
80
-20
0
20 40 TEMPERATURE (C)
60
80
Figure 8. Normalized Reset Threshold vs. Temperature
Figure 11. Normalized Reset Timeout Period vs. Temperature
Rev.PrC | Page 7 of 11
04533-0-009
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
1.20
190 180
NORMALIZED WATCHDOG TIMEOUT
1.15
MR MINIMUM PULSE WIDTH (ns)
170 160 150 140 130 120 110
1.10
1.05
1.00
0.95
04533-0-012
0.90 -40
-20
0
20 40 TEMPERATURE (C)
60
80
100 -50
0 TEMPERATURE (C)
50
Figure 12. Normalized Watchdog Timeout Period vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321)
160 140
Figure 14. Manual Reset Minimum Pulse Width vs. Temperature (ADM6316/ADM6317/ADM6319/ADM6320/ADM6322)
3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2
04533-0-013
MAXIMUM TRANSIENT DURATION (s)
100 80 60 40 20 0 10
VTH = 4.9V
MINIMUM PULSE WIDTH (ns)
120
NEGATIVE PULSE
POSITIVE PULSE
VTH = 2.93V 100 OVER DRIVE VOD (mV) 1000
2.0 -40
10 TEMPERATURE (C)
60
Figure 13. Maximum VCC Transient Duration vs. Reset Threshold Overdrive
Figure 15. Watchdog Input Minimum Pulse Width vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321)
Rev.PrC | Page 8 of 11
04333-0-015
04533-0-014
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
Table 5. Reset Threshold Options
Part No. ADM63 _ _ _ 50 ADM63 _ _ _ 49 ADM63 _ _ _ 48 ADM63 _ _ _ 47 ADM63 _ _ _ 46 ADM63 _ _ _ 45 ADM63 _ _ _ 44 ADM63 _ _ _ 43 ADM63 _ _ _ 42 ADM63 _ _ _ 41 ADM63 _ _ _ 40 ADM63 _ _ _ 39 ADM63 _ _ _ 38 ADM63 _ _ _ 37 ADM63 _ _ _ 36 ADM63 _ _ _ 35 ADM63 _ _ _ 34 ADM63 _ _ _ 33 ADM63 _ _ _ 32 ADM63 _ _ _ 31 ADM63 _ _ _ 30 ADM63 _ _ _ 29 ADM63 _ _ _ 28 ADM63 _ _ _ 27 ADM63 _ _ _ 26 ADM63 _ _ _ 25 TA = +25C Typ 5.000 4.900 4.800 4.700 4.630 4.500 4.390 4.300 4.200 4.100 4.00 3.900 3.800 3.700 3.600 3.500 3.400 3.300 3.200 3.080 3.000 2.930 2.800 2.700 2.630 2.500 TA = -40C to +85C Min Max 4.875 5.125 4.778 5.023 4.680 4.920 4.583 4.818 4.514 4.746 4.388 4.613 4.270 4.490 4.193 4.408 4.095 4.305 3.998 4.203 3.900 4.100 3.803 3.998 3.705 3.895 3.608 3.793 3.510 3.690 3.413 3.588 3.315 3.485 3.218 3.383 3.120 3.280 3.003 3.157 2.925 3.075 2.857 3.000 2.730 2.870 2.633 2.768 2.564 2.696 2.438 2.563
Min 4.925 4.827 4.728 4.630 4.561 4.433 4.314 4.236 4.137 4.039 3.940 3.842 3.743 3.645 3.546 3.448 3.349 3.251 3.152 3.034 2.955 2.886 2.758 2.660 2.591 2.463
Max 5.075 4.974 4.872 4.771 4.699 4.568 4.446 4.365 4.263 4.162 4.060 3.959 3.857 3.756 3.654 3.553 3.451 3.350 3.248 3.126 3.045 2.974 2.842 2.741 2.669 2.538
Table 6. Reset Timeout Options
Suffix A B C D Min 1 20 140 1.12 Typ 1.6 30 200 1.60 Max 2 40 280 2.24 Unit ms ms ms s
Table 7. Watchdog Timer Operations
Suffix W X Y Z Min 4.3 71 1.12 17.9 Typ 6.3 102 1.6 25.6 Max 9.3 153 2.24 38.4 Unit ms ms s s
Table 8. Standard Models
Model ADM6316CY29ARJ ADM6316CY46ARJ ADM6318CY46ARJ ADM6319C46ARJ ADM6320CY29ARJ ADM6320CY46ARJ ADM6321CY46ARJ ADM6322C46ARJ Reset Threshold (V) 2.93 4.63 4.63 4.63 2.93 4.63 4.63 4.63 Minimum Reset Timeout (ms) 140 140 140 140 140 140 140 140 Typical Watchdog Timeout (s) 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6
Rev.PrC | Page 9 of 11
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
OUTLINE DIMENSIONS
2.90 BSC
5 4
1.60 BSC
1
2.80 BSC
2 3
PIN 1 0.95 BSC 1.30 1.15 0.90 1.90 BSC
1.45 MAX
0.22 0.08 10 5 0 0.60 0.45 0.30
0.15 MAX
0.50 0.30
SEATING PLANE
COMPLIANT TO JEDEC STANDARDS MO-178AA
Figure 16. 5-Lead Small Outline Transistor Package [SOT-23] (RJ-5) Dimensions shown in millimeters
Rev.PrC | Page 10 of 11
PRELIMINARY TECHNICAL DATA
ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322
ORDERING GUIDE
ADM63__ __ __ __ A RJ - __
Generic No.
(16 - 22)
Ordering Quantity:
Reset Timeout Period
A: 1ms (min) B: 20ms (min) C: 140ms (min) D: 1120ms (min)
RL7: 10,000 piece Reel RL: 3,000 piece Reel
Watchdog Timeout Period
W: 6.3ms (typ) X: 102ms (typ) Y: 1.6s (typ) Z: 25s (typ)
Package Code: Temperature Range: A: -40 C to +85C C A: -40C to +85
RJ: 5-Lead SOT-23
Reset Threshold No. (25 - 50)
Figure 17. Ordering Code Structure
Model12 ADM6316 _ _ __ ARJ-RL7 ADM6317 _ _ __ ARJ-RL7 ADM6318 _ _ __ ARJ-RL7 ADM6319 _ __ ARJ-RL7 ADM6320 _ _ __ ARJ-RL7 ADM6321 _ _ __ ARJ-RL7 ADM6322 _ __ ARJ-RL7
Temperature Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C
Quantity 3k 3k 3k 3k 3k 3k 3k
Package Option SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5
Branding N00 N01 N02 N03 N04 N05 N06
1 2
Complete the ordering code by inserting reset timeout, watchdog timeout (ADM6316/17/18/20/21) and reset threshold suffixes from tables 5 to 7. Contact the factory for the availability of nonstandard models. See Table 8 for a list of standard models.
(c) 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
PR04533-0-6/04(PrC)
Rev.PrC | Page 11 of 11

▲Up To Search▲

Price & Availability of ADM6316

	To Download ADM6316 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .