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LT1097 View Datasheet(PDF) - Linear Technology

Part Name
Description
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LT1097
Linear
Linear Technology Linear
LT1097 Datasheet PDF : 12 Pages
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LT1097
APPLICATIONS INFORMATION
The LT1097 is pin compatible to and directly replaces such
precision op amps as the OP-07, OP-77, AD707, OP-97, OP-
177, LM607 and LT1001 with improved price/performance.
Compatibility includes externally nulling the offset voltage, as
all of the above devices are trimmed with a potentiometer
between Pin 1 and Pin 8 and the wiper tied to V+.
The simple difference amplifier can be used to illustrate
the all-around excellence of the LT1097. The 50k input
resistance is selected to be large enough compared to
input signal source resistance. Simultaneously, the 50k
resistors should not dominate the precision and noise
error budget. Assuming perfect matching between the
four resistors, the following table summarizes the input
referred performance obtained using the LT1097 and
other popular, low cost precision op amps.
Input offset voltage can be adjusted over a ±600µV range
with a 10k potentiometer.
The LT1097 is internally compensated for unity gain
stability. As shown on the Capacitive Load Handling plot,
the LT1097 is stable with any capacitive load. However,
the overcompensation capacitor, CS, can be used to re-
duce overshoot with heavy capacitive loads, to narrow
noise bandwidth or to stabilize circuits with gain in the
feedback loop.
±27V Common Mode Range Difference Amplifier
50k
15V
50k
–IN
27
LT1097
6
OUT
50k
+IN
3+
4
50k –15V
LT1097•F01
Guaranteed Perfomance, VS = ±15V, TA = 25°C
PARAMETER
LT1097CN8
Error Terms
VOS Max
50
IOS Max•25k
6
Gain Min, 10V Out
14
CMRR, Min, ±25V In
22
PSRR, Min, VS = ±15V ±10%
6
Sum of All Error Terms
98
0.1Hz to 10Hz Noise
Voltage Noise
0.5
Current Noise•50k
0.11
Resistor Noise
0.55
RMS sum
0.75
Drift with Temp
TCVOS Max
1
TCIOS Max•25k
0.1
Sum of Drift Terms
1.1
Supply Current Max
0.56
OP-77GP
100
70
5
20
9
204
0.38
0.75
0.55
1
1.2
2.1
3.3
2
Frequency Compensation and Optional Offset Nulling
10k
V+
POT
1
2
8
LT1097
7 6 OUT
3+
5
4
CS
V–
LT1097•F02
AD707JN
90
50
3
13
9
165
0.23
0.7
0.55
0.92
1
1
2
3
OP-177GP
60
70
5
22
9
166
0.38
0.75
0.55
1
1.2
2.1
3.3
2
OP-97FP
75
4
50
39
9
177
0.5
0.1
0.55
0.75
2
0.2
2.2
0.6
UNITS
µV
µV
µV
µV
µV
µV
µVp-p Typ
µVp-p Typ
µVp-p Typ
µVp-p
µV/°C
µV/°C
µV/°C
mA
9
 

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