LT1787 データシートの表示（PDF） - Linear Technology
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LT1787 Datasheet PDF : 16 Pages
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LT1787/LT1787HV
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over
TA = 25°C. Total supply = (VS– – VEE) = 2.5V to 36V
the temperature
(LT1787I), 2.5V
range –40°C ≤ TA ≤
to 60V (LT1787HVI)
85°C, otherwise specifications are at
unless otherwise specified. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
Unipolar Output
Saturation Voltage
VOMAX Maximum Output Voltage
RG1A, RG2A Input Gain-Setting Resistor
ROUT
Output Resistor
VSENSE = 2mV, VBIAS = 0V
VSENSE = 4mV, VBIAS = 0V
VSENSE = 5mV, VBIAS = 0V
VSENSE = 6mV, VBIAS = 0V
VSENSE = 2mV, VBIAS = 0V
VSENSE = 4mV, VBIAS = 0V
VSENSE = 5mV, VBIAS = 0V
VSENSE = 6mV, VBIAS = 0V
Pin 1 to Pin 2, Pin 7 to Pin 8
Pin 5 to Pin 6
32
50
38
55
43
60
49
65
●
32
56
●
38
61
●
43
66
●
49
71
VS+ – 0.75
1.25
20
UNITS
mV
mV
mV
mV
mV
mV
mV
mV
V
kΩ
kΩ
The ● denotes the specifications which apply over
TA = 25°C. Total supply = (VS– – VEE) = 2.5V to 36V
the temperature range –
(LT1787H), 2.5V to 60V
40°C ≤ TA ≤ 125°C, otherwise specifications are
(LT1787HVH) unless otherwise specified. (Note
at
5)
VS–, VS+ Sense Amplifier Supply Voltage Single Supply Operation (LT1787H)
Single Supply Operation (LT1787HVH)
● 2.5
36
● 2.5
60
VSENSE Input Sense Voltage Full Scale VSENSE = VS+ – VS–, VS = 10V, VBIAS = 5V, AV = 8 ±10%
● 500
VOS
Input Offset Voltage
IOUT = 0, VS Supply = 5V
– 40°C ≤ TA ≤ 125°C
– 75 ±40 75
● – 400
400
IOUT = 0 (LT1787H)
– 40°C ≤ TA ≤ 125°C
– 100
100
● – 550
550
IOUT = 0 (LT1787HVH)
– 40°C ≤ TA ≤ 125°C
– 100
100
● – 550
550
VOS TC Temperature Coefficient of VOS VS Supply = 5V (Note 6)
●
0.5
4
IOUT(O) No-Load Output Current Error VSENSE = 0V
4
VOUT(O)
No-Load Output Voltage Error VSENSE = 0V, VS Supply = 5V
– 40°C ≤ TA ≤ 125°C
– 600
600
● – 3200
3200
gm
Tranconductance, IOUT/ VSENSE ±VSENSE = 10mV, 50mV, 100mV, 150mV, 250mV,
400
VS Supply = Total Supply + |VSENSE|
AV
Gain, VOUT/ VSENSE
±VSENSE = 100mV, VS Supply = 5V
● 7.76
8
8.24
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 (LT1787H)
VSENSE = 0V, VS Supply = 2.5V to 60V (LT1787HVH)
● 100 130
● 100 130
VEE PSRR Negative Supply Rejection Ratio VSENSE = 0V, VS Supply = 15V, VBIAS = 0V,
VEE = – 1V to – 15V (LT1787H)
● 100 130
VSENSE = 0V, VS Supply = 40V, VBIAS = 0V,
VEE = – 1V to – 15V (LT1787HVH)
● 100 130
∆VOS
Change in Input Offset Voltage VSENSE = 0V, VS Supply = 36V, VBIAS = 0.5V to 25V (LT1787H) ● 100 130
∆VBIAS with Change in VBIAS Voltage VSENSE = 0V, VS Supply = 60V, VBIAS = 0.5V to 25V (LT1787HVH) ● 100 130
IS+(O)
Positive Input Sense Current VSENSE = 0V
●
10
25
IS–(O)
Negative Input Sense Current VSENSE = 0V
●
50 115
IEE(O)
Negative Supply Current
VSENSE = 0V
●
60 140
IOUT
Output Current
VOUT
Output Voltage
Ripple Rejection
VSENSE = ±128mV
VSENSE = ±128mV, VS+ ≥ 3.3V
VS+ = VS– = 20V, ∆VS Supply = 1V, f = 1kHz
± 50
VBIAS ±1.024
● 80
88
V
V
mV
µV
µV
µV
µV
µV
µV
µV/°C
nA
µV
µV
µA/V
V/V
%
dB
dB
dB
dB
dB
dB
µA
µA
µA
µA
V
dB
1787fc
5
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