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PDF ADCMP671 Data sheet ( Hoja de datos )
| Número de pieza | ADCMP671 | |
| Descripción | Adjustable UV and OV Monitor | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
Low Power, Adjustable UV and OV Monitor
with 400 mV, ±0.275% Reference
ADCMP671
FEATURES
Window monitoring with minimum processor I/O
Individually monitoring N rails with only N + 1 processor I/O
400 mV, ± 0.275% threshold at VDD = 3.3 V, 25°C
Supply range: 1.7 V to 5.5 V
Low quiescent current: 17 μA maximum at 125°C
Input range includes ground
Internal hysteresis: 9.2 mV typical
Low input bias current: 2.5 nA maximum
Open-drain outputs
Power good indication output
Designated over voltage indication output
Low profile (1 mm), 6-lead TSOT package
FUNCTIONAL BLOCK DIAGRAM
VDD
INH
UV
ADCMP671
PWRGD
400mV
OV
INL
OV
GND
Figure 1.
APPLICATIONS
Supply voltage monitoring
Li-Ion monitoring
Portable applications
Handheld instruments
GENERAL DESCRIPTION
The ADCMP671 voltage monitor consists of two low power, high
accuracy comparators and reference circuits. It operates on a
supply voltage from 1.7 V to 5.5 V and draws 17 μA maximum,
making it suitable for low power system monitoring and portable
applications. The part is designed to monitor and report supply
undervoltage and overvoltage fault. The low input bias current
and voltage reference allows resistor adjustable UV and OV
threshold down to 400 mV. The ADCMP671 has two open-
drain outputs: the PWRGD output indicates that the supply is
within the UV and OV window, and the OV output indicates
that the supply is overvoltage. This output combination allows
users to window monitor N supplies with an N + 1 processor
input/output (I/O). Each output is guaranteed to sink greater
than 5 mA over temperature.
The ADCMP671 is available in 6-lead TSOT package. The
device operates over the −40°C to +125°C temperature range.
404
INH1
402 INL1
INH2
INL2
400
398 RISING INPUT
396
394
392 FALLING INPUT
390
388
TWO TYPICAL PARTS
COMPARATOR A AND COMPARATOR B
386 VDD = 5V
–40 –20 0
20 40 60 80
TEMPERATURE (°C)
100 120
Figure 2. Comparator Thresholds vs. Temperature
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 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.
1 page  
ADCMP671
Data Sheet
VDD = 1.7 V to 5.5 V, 0°C ≤ TA ≤ 70°C, unless otherwise noted.
Table 2.
Parameter
THRESHOLDS1
Rising Input Threshold Voltage (VTH(R))
Falling Input Threshold Voltage (VTH(F))
Rising Input Threshold Voltage Accuracy
Falling Input Threshold Voltage Accuracy
Hysteresis = VTH(R) − VTH(F)
INPUT CHARACTERISTICS
Input Bias Current
Min
395.3
397.3
396.8
385.8
386.2
385.8
Typ
6.8
OPEN-DRAIN OUTPUTS
Output Low Voltage2
Output Leakage Current3
POWER SUPPLY
Supply Current4
1 RL = 100 kΩ, VOUT = 2 V swing.
2 VIN =10 mV input overdrive.
3 VIN = 40 mV overdrive.
4 No load.
Max
405.3
403.3
403.8
397.3
394.8
395.2
±0.75
±1.1
12.2
1
1
250
250
0.1
0.1
13
14
Unit
mV
mV
mV
mV
mV
mV
%
%
mV
nA
nA
mV
mV
μA
μA
μA
μA
Test Conditions/Comments
VDD = 1.7 V
VDD = 3.3 V
VDD = 5.5 V
VDD = 1.7 V
VDD = 3.3 V
VDD = 5.5 V
VDD = 3.3 V
VDD = 3.3 V
VDD = 1.7 V, VIN = VDD
VDD = 1.7 V, VIN = 0.1 V
VDD = 1.7 V, IOUT = 3 mA
VDD = 5.5 V, IOUT = 5 mA
VDD = 1.7 V, VOUT = VDD
VDD = 1.7 V, VOUT = 5.5 V
VDD = 1.7 V
VDD = 5.5 V
Rev. 0 | Page 4 of 16
5 Page 
ADCMP671
12.0
11.5
11.0
10.5
10.0
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
–40
1NH1
1NL1
INH2
INL2
–20 0
FOUR TYPICAL PARTS
VDD = 5V
20 40 60 80
TEMPERATURE (°C)
100 120
Figure 10. Hysteresis vs. Temperature for Four Typical Parts
12
11
10
9
8
7
6
5
4
1.7
TA = +125°C
TA = +25°C
TA = +85°C
TA = –40°C
2.2 2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
Figure 11. Hysteresis vs. Supply Voltage
5.7
10
NO LOAD CURRENT
9
8
TA = +85°C
7
TA = +125°C
TA = +25°C
6
TA = –40°C
5
4
1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
Figure 12. Quiescent Supply Current vs. Supply Voltage
Data Sheet
12.0
11.5
11.0
10.5
10.0
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
–40
VDD = 1.8V
VDD = 2.5V
VDD = 3.3V
VDD = 5.0V
–20 0
20 40 60 80
TEMPERATURE (°C)
100 120
Figure 13. Hysteresis vs. Temperature for Various VDD Voltages
1
0
–1
TA = –40°C
TA = +25°C
TA = +85°C
–2 TA = +125°C
–3
–4
–5
1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5
SUPPLY VOLTAGE (V)
Figure 14. Minimum Supply Voltage
50
40
30
20
TA = +25°C
10
TA = +85°C
TA = +125°C
0 TA = –40°C
0 0.5 1.0 1.5
SUPPLY VOLTAGE (V)
Figure 15. Start-Up Supply Current
Rev. 0 | Page 10 of 16
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ADCMP671.PDF ] | |
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