Datasheet

LT1122
7
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For more information www.linear.com/LT1122
TYPICAL PERFORMANCE CHARACTERISTICS
Warm-Up Drift Noise Spectrum 0.1Hz to 10Hz Noise
Total Harmonic Distortion + Noise
vs Frequency Inverting Gain
Total Harmonic Distortion + Noise
vs Frequency Noninverting Gain
Intermodulation Distortion
(CCIF Method) vs Frequency
LT1122 and LF156*
Distribution of Input Offset
Voltage
Input Bias and Offset Currents
Over Temperature
Bias and Offset Currents Over the
Common-Mode Range
INPUT OFFSET VOLTAGE (µV)
–900
0
NUMBER OF UNITS
200
400
600
800
–500 –100
100
500
V = ±15V
T = 25°C
(NOT WARMED UP)
S
A
3370 UNITS TESTED
IN ALL PACKAGES
1122 TPC05
900
CHIP TEMPERATURE (°C)
0
1
INPUT BIAS AND OFFSET CURRENTS (pA)
300
1k
3k
10k
25 50 75 100
125
100
30
10
3
BIAS
CURRENT
OFFSET
CURRENT
V = ±15V
V = 0V
S
CM
1122 TPC06
30k
100k
COMMON-MODE INPUT VOLTAGE (V)
15
0
INPUT BIAS AND OFFSET CURRENT (pA)
20
40
60
80
100
120
10 5 5 15
V = ±15V
T = 25°C
S
A
0
10
(NOT-WARMED UP)
BIAS
CURRENT
OFFSET
CURRENT
1122 TPC07
TIME AFTER POWER ON (MINUTES)
0
1
CHANGE IN OFFSET VOLTAGE (µV)
50
100
150
200
250
1 2 3
V = ±15V
T = 25°C
S
A
J PACKAGE
N PACKAGE
SO PACKAGE
IN STILL AIR (SO PACKAGE
SOLDERED ONTO BOARD)
1122 TPC08
FREQUENCY (Hz)
1
10
VOLTAGE NOISE DENSITY (nV/√Hz)
100
1000
3 10 10k
30 100 300 1k
3k
V = ±15V
T = 25°C
S
A
1122 TPC09
TIME (SECONDS)
0
NOISE VOLTAGE (1µV/DIV)
2 4 8 106
1122 TPC10
FREQUENCY (Hz)
20
0.0001
TOTAL HARMONIC DISTORTION + NOISE (%)
0.001
0.01
0.1
100 1k 20k
A
V
= –50
A
V
= –10
A
V
= –1
10k
T = 25°C
V = ±15V
Z = 5k//15pF
V = 7V RMS
A
S
L
O
1122 TPC11
FREQUENCY (Hz)
20
0.0001
TOTAL HARMONIC DISTORTION + NOISE (%)
0.001
0.01
0.1
100 1k 20k
A
V
= 50
A
V
= 10
A
V
=1
10k
T = 25°C
V = ±15V
Z = 5k//15pF
V = 7V RMS
A
S
L
O
1122 TPC12
FREQUENCY (Hz)
3k
0.0001
INTERMODULATION DISTORTION (IMD) (%)
0.001
0.01
0.1
10k 20k
LT1122
LF156
V = ±15V
T = 25°C
A = –10
V = 7V RMS
Z = 5k//15pF
S
A
V
O
L
*SEE LT1115 DATA SHEET FOR DEFINITION
OF CCIF TESTING
1122 TPC13