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LT1787CS8 Datasheet(PDF) 7 Page - Analog Devices

Part # LT1787CS8
Description  Precision, High Side Current Sense Amplifiers
PDF  16 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT1787CS8 Datasheet(HTML) 7 Page - Analog Devices

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LT1787/LT1787HV
1787fc
Output Voltage vs Sense Voltage
(Unidirectional Mode)
Gain vs Frequency
Gain vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
SENSE VOLTAGE (VS
+ – V
S
–) (mV)
0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
120
1787 G07
30
60
90
150
VS = 2.5V TO 60V
TA = –40°C TO 85°C
VBIAS = VEE
TEMPERATURE (
°C)
–40
8.195
8.185
8.175
8.165
8.155
8.145
8.135
–20
0
20
40
60
1787 G08
80
85
VS = (2.5V + |VSENSE|)TO 60V
VS
+ > V
S
–
VS
+ < V
S
–
FREQUENCY (Hz)
0.1k
1k
10k
1M
100k
10M
100M
1787 G09
30
20
10
0
–10
–20
–30
–40
–50
VSENSE = 10mV
Input Offset Voltage vs
Negative Supply Voltage
Output Voltage vs Sense Voltage
(Bidirectional Mode)
Input Offset Voltage vs
Temperature
NEGATIVE SUPPLY VOLTAGE (V)
0
30
20
10
0
–10
–20
–30
– 5
–10
–15
–20
–25
1787 G04
–30
TA = 25°C
TA = 85°C
VS
+ = V
S
– = 2.5V
VBIAS = 1V
TA = –40°C
TEMPERATURE (
°C)
–40
50
40
30
20
10
0
–10
–20
–30
–40
–50
–20
0
20
40
60
1787 G05
80
85
VS
+ = V
S
–
VBIAS = 0V
VEE = –1.25V
SENSE VOLTAGE (VS
+ – V
S
–) (mV)
–250
2.5
2.0
1.5
1.0
0.5
VBIAS
–0.5
–1.0
–1.5
–2.0
–2.5
150
1787 G06
–150
–50
50
250
VS = 5.5V TO 60V
VBIAS = 2.5V
VEE = 0V
Supply Current vs Supply Voltage
Negative Input Sense Current vs
Sense Voltage
TOTAL SUPPLY VOLTAGE (V)
75
70
65
60
55
50
45
40
1787 G10
0
10
20
30
40
50
60
TA = 85°C
TA = 25°C
TA = –40°C
VS
+ = V
S
–
SENSE VOLTAGE (VS
+ – V
S
–) (mV)
–128
120
110
100
90
80
70
60
50
40
30
–64
0
32
1787 G11
–96
–32
64
96
128
VS = (2.5V + |VSENSE|) TO 60V
TA = 25°C
TA = 85°C
TA = –40°C
SENSE VOLTAGE (VS
+ – V
S
–) (mV)
–128
60
50
40
30
20
10
0
–64
0
32
1787 G17
–96
–32
64
96
128
VS = (2.5V + |VSENSE|) TO 60V
TA = 85°C
TA = –40°C
TA = 25°C
Positive Input Sense Current vs
Sense Voltage



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