LT1787 查看數據表（PDF） - Linear Technology
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LT1787 Datasheet PDF : 16 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LT1787/LT1787HV
Input Offset Voltage vs
Negative Supply Voltage
30
VS+ = VS– = 2.5V
20 VBIAS = 1V
TA = 85°C
10
0
TA = 25°C
–10
TA = –40°C
–20
–30
0
– 5 –10 –15 –20 –25 –30
NEGATIVE SUPPLY VOLTAGE (V)
1787 G04
Output Voltage vs Sense Voltage
(Unidirectional Mode)
1.4
VS = 2.5V TO 60V
1.2 TA = –40°C TO 85°C
VBIAS = VEE
1.0
0.8
0.6
0.4
0.2
0
0
30
60
90 120 150
SENSE VOLTAGE (VS+ – VS–) (mV)
1787 G07
Input Offset Voltage vs
Temperature
50
40
VS+ = VS–
VBIAS = 0V
30 VEE = –1.25V
20
10
0
–10
–20
–30
–40
–50
–40 –20 0
20 40 60 80
TEMPERATURE (°C)
85
1787 G05
Output Voltage vs Sense Voltage
(Bidirectional Mode)
2.5 VS = 5.5V TO 60V
2.0 VBIAS = 2.5V
1.5 VEE = 0V
1.0
0.5
VBIAS
–0.5
–1.0
–1.5
–2.0
–2.5
–250 –150 –50 50 150 250
SENSE VOLTAGE (VS+ – VS–) (mV)
1787 G06
Gain vs Temperature
8.195
VS = (2.5V + |VSENSE|)TO 60V
8.185
8.175
VS+ > VS–
8.165
8.155
8.145
VS+ < VS–
8.135
–40 –20
0 20 40 60 80
TEMPERATURE (°C)
85
1787 G08
Gain vs Frequency
30
20
VSENSE = 10mV
10
0
–10
–20
–30
–40
–50
0.1k 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
1787 G09
Supply Current vs Supply Voltage
75
70
TA = 85°C
65
60
TA = 25°C
55
TA = –40°C
50
45
VS+ = VS–
40
0 10 20 30 40 50 60
TOTAL SUPPLY VOLTAGE (V)
1787 G10
Negative Input Sense Current vs
Sense Voltage
120
VS = (2.5V + |VSENSE|) TO 60V
110
100
90
80
70
TA = 85°C
60
TA = 25°C
50
40
TA = –40°C
30
–128 –96 –64 –32 0 32 64 96 128
SENSE VOLTAGE (VS+ – VS–) (mV)
1787 G11
Positive Input Sense Current vs
Sense Voltage
60
VS = (2.5V + |VSENSE|) TO 60V
50
40
TA = 85°C
30
20
TA = 25°C
TA = –40°C
10
0
–128 –96 –64 –32 0 32 64 96 128
SENSE VOLTAGE (VS+ – VS–) (mV)
1787 G17
1787fc
7
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