ADM693A Просмотр технического описания (PDF) - Analog Devices
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ADM693A Datasheet PDF : 12 Pages
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ADM691A/ADM693A/ADM800L/M–SPECIFICATIONS
(VCC = 4.75 V to 5.5 V (ADM691A, ADM800L) 4.5 V to 5.5 V (ADM693A, ADM800M) VBATT = +2.8 V, TA = TMIN to TMAX unless otherwise noted)
Parameter
Min
Typ
Max
Unit Test Conditions/Comments
BATTERY BACKUP SWITCHING
VCC, VBATT Operating Voltage Range
VOUT Output Voltage
VCC to VOUT Output Resistance
VOUT in Battery Backup Mode
VBATT to VOUT Output Resistance
Supply Current (Excludes IOUT)
Supply Current in B. Backup (Excludes IOUT)
Battery Standby Current
(+ = Discharge, – = Charge)
Battery Switchover Threshold
VCC–VBATT
Battery Switchover Hysteresis
BATT ON Output Voltage Low
BATT ON Output Short Circuit Current
0
VCC – 0.05
VCC – 0.3
VBATT – 0.3
VBATT – 0.25
VBATT – 0.15
–0.1
–1.0
1
5.5
VCC – 0.02
VCC – 0.2
0.8
1.2
12
20
25
70
100
0.04
1
+0.02
+0.02
VBATT + 0.03
VBATT – 0.03
60
0.1
0.4
0.7
1.5
60
15
100
V
V
IOUT = 25 mA
V
IOUT = 250 mA
Ω
VCC = 4.5 V
V
VBATT = 4.5 V, IOUT = 20 mA
V
VBATT = 2.8 V, IOUT = 10 mA
V
VBATT = 2.0 V, IOUT = 5 mA
Ω
VBATT = 4.5 V
Ω
VBATT = 2.8 V
Ω
VBATT = 2.0 V
µA
VCC > (VBATT – 1 V)
µA
VCC < (VBATT – 1.2 V), VBATT = 2.8 V
5.5 V > VCC > VBATT + 0.2 V
µA
(VBATT +0.2 V) < VCC , TA = +25°C
µA
(VBATT +0.2 V) < VCC
V
Power Up
V
Power Down
mV
V
ISINK = 3.2 mA
V
ISINK = 25 mA
mA Sink Current
µA
Source Current
RESET AND WATCHDOG TIMER
Reset Voltage Threshold
ADM691A, ADM800L
ADM693A, ADM800M
ADM800L, VCC Falling
ADM800M, VCC Falling
Reset Threshold Hysteresis
VCC to RESET Delay
LOW LINE to RESET Delay
Reset Timeout Period Internal Oscillator
Reset Timeout Period External Clock
Watchdog Timeout Period, Internal Oscillator
Watchdog Timeout Period, External Clock
Minimum WDI Input Pulse Width
RESET Output Voltage
RESET Output Short Circuit Current
RESET Output Voltage Low
LOW LINE Output Voltage
LOW LINE Short Circuit Source Current
WDO Output Voltage
WDO Short Circuit Source Current
WDI Input Threshold
Logic Low
Logic High
WDI Input Current
POWER FAIL DETECTOR
PFI Input Threshold ADM69xA
PFI Input Threshold ADM800L/M
PFI Input Current
PFO Output Voltage
PFO Short Circuit Source Current
PFI to PFO Delay
4.5
4.65
4.25
4.40
4.55
4.3
15
80
800
140
200
2048
1.0
1.6
70
100
4096
1024
100
0.004
0.1
3.5
7
0.1
0.4
3.5
1
15
3.5
3
0.75 × VCC
–50
1.2
1.225
3.5
1
–10
20
1.25
1.25
± 0.01
15
25
60
4.75
4.50
4.70
4.45
280
2.25
140
0.3
0.4
20
0.4
100
0.4
10
0.8
50
1.3
1.275
± 25
0.4
100
V
V
V
V
mV
µs
ns
ms
Cycles
s
ms
Cycles
Cycles
ns
V
V
V
mA
V
V
V
µA
V
V
mA
TA = +25°C
TA = +25°C
Power Down
Power Up
Power Up
Long Period
Short Period
Long Period
Short Period
VIL = 0.4, VIH = 0.75 × VCC
ISINK = 50 µA, VCC = 1 V, VBATT = 0 V
ISINK = 3.2 mA, VCC = 4.25 V
ISOURCE = 1.6 mA, VCC = 5 V
ISINK = 3.2 mA
ISINK = 3.2 mA, VCC = 4.25 V
ISOURCE = 1 µA, VCC = 5 V
ISINK = 3.2 mA, VCC = 4.25 V
ISOURCE = 500 µA, VCC = 5 V
V
V
µA
WDI = 0 V
µA
WDI = VOUT
V
VCC = 5 V
V
VCC = 5 V
nA
V
ISINK = 3.2 mA
ISOURCE = 1 µA
µA
µs
VIN = –20 mV
µs
VIN = 20 mV
–2–
REV. 0
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