LT1124IS8 Linear Technology, LT1124IS8 Datasheet - Page 12

IC OPAMP DUAL PREC HS LN 8SOIC

LT1124IS8

Manufacturer Part Number
LT1124IS8
Description
IC OPAMP DUAL PREC HS LN 8SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT1124IS8

Amplifier Type
General Purpose
Number Of Circuits
2
Slew Rate
4.5 V/µs
Gain Bandwidth Product
12.5MHz
Current - Input Bias
8nA
Voltage - Input Offset
25µV
Current - Supply
2.3mA
Voltage - Supply, Single/dual (±)
±4 V ~ 18 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Output Type
-
Current - Output / Channel
-
-3db Bandwidth
-

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LT1124/LT1125
PERFORMANCE COMPARISON
Table 2. Guaranteed Performance, V
PARAMETER/UNITS
Voltage Noise, 1kHz
Slew Rate
Gain-Bandwidth Product
Offset Voltage
Offset Current
Bias Current
Supply Current/Amp
Voltage Gain, R
Common Mode Rejection Ratio
Power Supply Rejection Ratio
SO-8 Package
TYPICAL APPLICATIONS
Table 2 summarizes the performance of the LT1124/
LT1125 compared to the low cost grades of alternate
approaches.
The comparison shows how the specs of the LT1124/
LT1125 not only stand up to the industry standard OP-27,
12
THE HIGH GAIN AND WIDE BANDWIDTH OF THE LT1124/LT1125, IS USEFUL IN LOW
FREQUENCY HIGH CLOSED-LOOP GAIN AMPLIFIER APPLICATIONS. A TYPICAL
PRECISION OP AMP MAY HAVE AN OPEN-LOOP GAIN OF ONE MILLION WITH 500kHz
BANDWIDTH. AS THE GAIN ERROR PLOT SHOWS, THIS DEVICE IS CAPABLE OF 0.1%
AMPLIFYING ACCURACY UP TO 0.3Hz ONLY. EVEN INSTRUMENTATION RANGE
SIGNALS CAN VARY AT A FASTER RATE. THE LT1124/LT1125 “GAIN PRECISION —
BANDWIDTH PRODUCT” IS 75 TIMES HIGHER, AS SHOWN.
Gain 1000 Amplifi er with 0.01% Accuracy, DC to 1Hz
L
= 2k
365Ω
1%
LT1124
LT1125
LT1124
LT1125
INPUT
340k
1%
+
1/2 LT1124
–15V
15V
15k
5%
Yes – LT1124
100% Tested
100% Tested
100% Tested
S
LT1124CN8
LT1125CN
RN60C FILM RESISTORS
= ±15V, T
2.75
100
140
106
110
4.2
2.7
8.0
1.5
TRIM
20
30
30
20k
A
= 25°C, Low Cost Devices
OUTPUT
Sample Tested
1124/25 TA03
Not Tested
Not Tested
OP-27 GP
5.67
100
100
Yes
4.5
1.7
5.0
0.7
75
80
94
but in most cases are superior. Normally dual and quad
performance is degraded when compared to singles, for
the LT1124/LT1125 this is not the case.
Gain Error vs Frequency Closed-Loop Gain = 1000
0.001
0.01
OP-270 GP
1.0
0.1
No Limit
No Limit
3.25
0.35
0.1
250
104
1.7
No
20
60
90
PRECISION
TYPICAL
OP AMP
GAIN ERROR =
FREQUENCY (Hz)
1
LT1124/LT1125
Sample Tested
CLOSED-LOOP GAIN
OPEN-LOOP GAIN
OP-470 GP
No Limit
1000
2.75
100
105
5.0
1.4
0.4
10
30
60
1124/25 TA04
100
nV/√Hz
UNITS
11245fe
V/μV
V/μs
MHz
mA
μV
μV
nA
nA
nA
dB
dB

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