ADM693AR Analog Devices Inc, ADM693AR Datasheet
ADM693AR
Specifications of ADM693AR
Available stocks
Related parts for ADM693AR
ADM693AR Summary of contents
Page 1
FEATURES Superior Upgrade for MAX690–MAX695 Specified Over Temperature Low Power Consumption (5 mW) Precision Voltage Monitor Reset Assertion Down Low Switch On-Resistance 1 Backup High Current Drive (100 mA) Watchdog Timer—100 ms, 1.6 ...
Page 2
ADM690–ADM695–SPECIFICATIONS Parameter BATTERY BACKUP SWITCHING V Operating Voltage Range CC ADM690, ADM691, ADM694, ADM695 ADM692, ADM693 V Operating Voltage Range BATT ADM690, ADM691, ADM694, ADM695 ADM692, ADM693 V Output Voltage OUT V in Battery Backup Mode OUT Supply Current (Excludes ...
Page 3
... CC Model ADM690AN + 0.5 V ADM690AQ OUT ADM690SQ ADM691AN ADM691AR ADM691AQ ADM691SQ ADM692AN ADM692AQ ADM692SQ ADM693AN ADM693AR ADM693AQ ADM693SQ ADM694AN ADM694AQ ADM694SQ ADM695AN ADM695AR ADM695AQ ADM695SQ –3– ADM690–ADM695 Test Conditions/Comments OSC SEL = 0 V OSC SEL = ...
Page 4
ADM690–ADM695 Mnemonic Function V Power Supply Input Nominal Backup Battery Input. Connect to Ground if a backup battery is not used. BATT V Output Voltage OUT CC can supply up to 100 mA ...
Page 5
V 1 BATT V 2 OUT ADM691 V 3 ADM693 CC ADM695 GND 4 TOP VIEW 5 BATT ON (Not to Scale) LOW LINE 6 OSC IN 7 OSC SEL 8 Part Nominal Reset Nominal V Number Time Reset Threshold ...
Page 6
ADM690–ADM695 POWER FAIL RESET OUTPUT RESET is an active low output which provides a RESET signal to the Microprocessor whenever invalid level. When CC V falls below the reset threshold, the RESET output is forced CC ...
Page 7
Table I. ADM691, ADM693, ADM695 Reset Pulse Width and Watchdog Timeout Selections OSC SEL OSC IN Low External Clock Input Low External Capacitor Floating or High Low Floating or High Floating or High NOTE With the OSC SEL pin low, ...
Page 8
ADM690–ADM695 CE Gating and RAM Write Protection (ADM691/ADM693/ ADM695) The ADM691/ADM693/ADM695 products include memory protection circuitry which ensures the integrity of data in mem- ory by preventing write operations when V level. There are two additional pins, CE may be ...
Page 9
+ 4.95 4.90 SLOPE = 1.5 4.85 4. 100 I – mA OUT Figure 8. V vs. I Normal OUT OUT Operation 1.303 1.302 1.301 1.300 ...
Page 10
ADM690–ADM695 +APPLICATION INFORMATION Increasing the Drive Current If the continuous output current requirements at V 100 lower V –V voltage differential is desired, CC OUT an external PNP pass transistor may be connected in parallel with ...
Page 11
INPUT POWER BATT 10M BATTERY ADM69x PFI 10M 20k OPTIONAL CE OUT TEST LOAD Figure 20. Monitoring the Battery Status Alternate Watchdog Input Drive Circuits The watchdog feature can be enabled and disabled under pro- gram ...
Page 12
ADM690–ADM695 R =(V – 50 mV)/ Note that the resistor will discharge the battery slightly. With a V supply of 4 suitable resistor is 4 With battery this will draw ...
Page 13
INPUT POWER +5V 0 BATT V OUT BATT OUT BATTERY R ADM691 ADM693 ADM695 PFI GND WDI OSC IN PFO OSC SEL RESET LOW LINE WDO SYSTEM ...
Page 14
ADM690–ADM695 0.210 (5.33) 0.200 (5.05) 0.125 (3.18) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Pin Plastic DIP (N- 0.280 (7.11) PIN 1 0.240 (6.10 0.325 (8.25) 0.430 (10.92) 0.300 (7.62) 0.348 (8.84) 0.060 (1.52) 0.210 ...
Page 15
SEATING 0.299 (7.60) REV. A 16-Lead Cerdip (Q-16 0.310 (7.87) PIN 1 0.220 (5.59 0.840 (21.34) MAX 0.060 (1.52) 0.015 (0.38) 0.200 (5.08) MAX 0.150 (3.81) MIN PLANE 0.022 (0.558) 0.100 (2.54) 0.070 (1.78) BSC 0.014 ...
Page 16
–16– ...