3
LT1787/LT1787HV
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: ESD (Electrostatic Discharge) sensitive devices. Extensive use of
ESD protection devices are used internal to the LT1787/LT1787HV,
however, high electrostatic discharge can damage or degrade the device.
Use proper ESD handling precautions.
Note 3: The LT1787C/LT1787HVC are guaranteed to meet specified
performance from 0°C to 70° and are designed, characterized and
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
Total supply = (V
S
–
– V
EE
) = 2.5V to 36V (LT1787), 2.5V to 60V (LT1787HV) unless otherwise specified.
expected to meet these extended temperature limits, but are not tested at
–40°C and 85°C. The LT1787I/LT1787HVI are guaranteed to meet the
extended temperature limits.
Note 4: Testing done at V
BIAS
= 1.25V, V
EE
= 0V unless otherwise
specified.
Note 5: This parameter is not 100% tested.
V
OS
TC Temperature Coefficient of V
OS
V
S
Supply = 5V (Note 5) 0.5 2 µV/°C
I
OUT(O)
No-Load Output Current Error V
SENSE
= 0V 4 nA
V
OUT(O)
No-Load Output Voltage Error V
SENSE
= 0V, V
S
Supply = 5V –600 600 µV
(S8) 0°C ≤ T
A
≤ 70°C ● –1080 1080 µV
–40°C ≤ T
A
≤ 85°C ● –1600 1600 µV
No-Load Output Voltage Error V
SENSE
= 0V, V
S
Supply = 5V –1000 1000 µV
(MS8) 0°C ≤ T
A
≤ 70°C ● –1840 1840 µV
–40°C ≤ T
A
≤ 85°C ● –2000 2000 µV
g
m
Tranconductance, I
OUT
/V
SENSE
±V
SENSE
= 10mV, 50mV, 100mV, 150mV, 250mV, 400 µA/V
V
S
Supply = Total Supply + |V
SENSE
|
A
V
Gain, V
OUT
/V
SENSE
±V
SENSE
= 100mV, V
S
Supply = 5V ● 7.6 8 8.4 V/V
Output Voltage Gain Error ● –5 2 5 %
V
S
PSRR V
S
Supply Rejection Ratio V
SENSE
= 0V, V
S
Supply = 2.5V to 36V (LT1787) ● 120 135 dB
V
SENSE
= 0V, V
S
Supply = 2.5V to 60V (LT1787HV) ● 120 135 dB
V
EE
PSRR Negative Supply Rejection Ratio V
SENSE
= 0V, V
S
Supply = 15V, V
BIAS
= 0V, ● 100 130 dB
V
EE
= –1V to –15V (LT1787)
V
SENSE
= 0V, V
S
Supply = 40V, V
BIAS
= 0V, ● 100 130 dB
V
EE
= –1V to –15V (LT1787HV)
∆V
OS
Change in Input Offset Voltage V
SENSE
= 0V, V
S
Supply = 36V, V
BIAS
= 0.5V to 25V (LT1787) ● 100 130 dB
∆V
BIAS
with Change in V
BIAS
Voltage V
SENSE
= 0V, V
S
Supply = 60V, V
BIAS
= 0.5V to 25V (LT1787HV) ● 100 130 dB
I
S
+
(O)
Positive Input Sense Current V
SENSE
= 0V ● 10 20 µA
I
S
–
(O)
Negative Input Sense Current V
SENSE
= 0V ● 50 100 µA
I
EE(O)
Negative Supply Current V
SENSE
= 0V ● 60 120 µA
I
OUT
Output Current V
SENSE
= ±128mV ±50 µA
V
OUT
Output Voltage V
SENSE
= ±128mV, V
S
+
≥ 3.3V V
BIAS
±1.024 V
Ripple Rejection V
S
+
= V
S
–
= 20V, ∆V
S
Supply = 1V, f = 1kHz ● 80 88 dB
V
OMIN
Minimum Output Voltage V
SENSE
= 0V, V
BIAS
= 0V ● 30 45 mV
V
SENSE
= V
S
+
– V
S
–
= –128mV, V
BIAS
= 0V 10 mV
Unipolar Output V
SENSE
= 2mV, V
BIAS
= 0V ● 32 50 mV
Saturation Voltage V
SENSE
= 4mV, V
BIAS
= 0V ● 38 55 mV
V
SENSE
= 5mV, V
BIAS
= 0V ● 43 60 mV
V
SENSE
= 6mV, V
BIAS
= 0V ● 49 65 mV
V
OMAX
Maximum Output Voltage V
S
+
– 0.75 V
R
G1A,
R
G2A
Input Gain-Setting Resistor Pin 1 to Pin 2, Pin 7 to Pin 8 1.25 kΩ
R
OUT
Output Resistor Pin 5 to Pin 6 20 kΩ
(Note 4)
