LT1124IS8 Linear Technology, LT1124IS8 Datasheet - Page 12

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

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: -

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