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LT1787CS8 Datasheet(PDF) 3 Page - Linear Technology

Part # LT1787CS8
Description  Precision, High Side Current Sense Amplifiers
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

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LT1787/LT1787HV
1787fc
Input Offset Voltage (MS8)
IOUT = 0, VS Supply = 5V
– 125
±40
125
µV
0
°C ≤ TA ≤ 70°C
– 230
230
µV
IOUT = 0 (LT1787)
– 150
150
µV
0
°C ≤ TA ≤ 70°C
– 250
250
µV
IOUT = 0 (LT1787HV)
– 150
150
µV
0
°C ≤ TA ≤ 70°C
– 250
250
µV
VOS TC
Temperature Coefficient of VOS VS Supply = 5V (Note 6)
0.5
2
µV/°C
IOUT(O)
No-Load Output Current Error
VSENSE = 0V
4
nA
VOUT(O)
No-Load Output Voltage Error
VSENSE = 0V, VS Supply = 5V
–600
600
µV
(S8)
0
°C ≤ TA ≤ 70°C
–1080
1080
µV
No-Load Output Voltage Error
VSENSE = 0V, VS Supply = 5V
– 1000
1000
µV
(MS8)
0
°C ≤ TA ≤ 70°C
–1840
1840
µV
gm
Tranconductance, IOUT/VSENSE
±VSENSE = 10mV, 50mV, 100mV, 150mV, 250mV,
400
µA/V
VS Supply = Total Supply + |VSENSE|
AV
Gain, VOUT/VSENSE
±VSENSE = 100mV, VS Supply = 5V
7.76
8
8.24
V/V
Output Voltage Gain Error
±VSENSE = 100mV, VS Supply = 5V
–3
1
3
%
VS PSRR
VS Supply Rejection Ratio
VSENSE = 0V, VS Supply = 2.5V to 36V (LT1787)
120
135
dB
VSENSE = 0V, VS Supply = 2.5V to 60V (LT1787HV)
120
135
dB
VEE PSRR Negative Supply Rejection Ratio VSENSE = 0V, VS Supply = 15V, VBIAS = 0V,
100
130
dB
VEE = – 1V to – 15V (LT1787)
VSENSE = 0V, VS Supply = 40V, VBIAS = 0V,
100
130
dB
VEE = – 1V to – 15V (LT1787HV)
∆VOS
Change in Input Offset Voltage
VSENSE = 0V, VS Supply = 36V, VBIAS = 0.5V to 25V (LT1787)
100
130
dB
∆VBIAS
with Change in VBIAS Voltage
VSENSE = 0V, VS Supply = 60V, VBIAS = 0.5V to 25V (LT1787HV)
100
130
dB
IS+(O)
Positive Input Sense Current
VSENSE = 0V
10
20
µA
IS–(O)
Negative Input Sense Current
VSENSE = 0V
50
100
µA
IEE(O)
Negative Supply Current
VSENSE = 0V
60
120
µA
IOUT
Output Current
VSENSE = ±128mV
±50
µA
VOUT
Output Voltage
VSENSE = ±128mV, VS+ ≥ 3.3V
VBIAS ±1.024
V
Ripple Rejection
VS+ = VS– = 20V, ∆VS Supply = 1V, f = 1kHz
80
88
dB
VOMIN
Minimum Output Voltage
VSENSE = 0V, VBIAS = 0V
30
45
mV
VSENSE = VS+ – VS– = –128mV, VBIAS = 0V
10
mV
VSENSE = 0V, VBIAS = 0V
30
49
mV
VSENSE = VS+ – VS– = –128mV, VBIAS = 0V
10
mV
Unipolar Output
VSENSE = 2mV, VBIAS = 0V
32
50
mV
Saturation Voltage
VSENSE = 4mV, VBIAS = 0V
38
55
mV
VSENSE = 5mV, VBIAS = 0V
43
60
mV
VSENSE = 6mV, VBIAS = 0V
49
65
mV
VSENSE = 2mV, VBIAS = 0V
32
54
mV
VSENSE = 4mV, VBIAS = 0V
38
59
mV
VSENSE = 5mV, VBIAS = 0V
43
64
mV
VSENSE = 6mV, VBIAS = 0V
49
69
mV
VOMAX
Maximum Output Voltage
VS+ – 0.75
V
RG1A, RG2A Input Gain-Setting Resistor
Pin 1 to Pin 2, Pin 7 to Pin 8
1.25
k
ROUT
Output Resistor
Pin 5 to Pin 6
20
k
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
The
denotes the specifications which apply over the temperature range 0
°C ≤ TA ≤ 70°C, otherwise specifications are at TA = 25°C.
Total supply = (VS– – VEE) = 2.5V to 36V (LT1787C), 2.5V to 60V (LT1787HVC) unless otherwise specified.
(Note 5)


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