LT1457 Ver la hoja de datos (PDF) - Linear Technology
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LT1457 Datasheet PDF : 8 Pages
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LT1457
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias and Offset Current vs
Temperature
1000
VS = ±15V
VCM = 0V
300 WARMED UP
100
BIAS CURRENT
30
10
OFFSET CURRENT
3
0
25
50
75
100
AMBIENT TEMPERATURE (°C)
LT1457 • TPC01
Input Offset Voltage Distribution
N8 Package
24
VS = ±15V
21 TA = 25°C
18
900 DUALS
(1800 OP AMPS)
TESTED FROM 3
RUNS
15
12
9
6
3
0
–0.8 –0.6 –0.4 –0.2 0 0.2 0.4 0.6 0.8
INPUT OFFSET VOLTAGE (mV)
LT1457 • TPC04
Voltage Noise vs Frequency
100
VS = ±15V
70
TA = 25°C
50
Input Bias Current Over
the Common-Mode Range
160
140 VS = ±15V
120
100
TA = 70°C
80
60
40
20
0
–20
–15
TA = 25°C
–10 –5 0
5 10 15
COMMON-MODE INPUT VOLTAGE (V)
LT1457 • TPC02
Voltage Gain vs Temperature
1000
RL = 2k
VS = ±15V
VO = ±10V
300
RL = 1k
100
30
10
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
LT1457 • TPC05
0.1Hz to 10Hz Noise
VS = ±15V
TA = 25°C
30
20
1/f CORNER = 28Hz
10
3 10 30 100 300 1k
FREQUENCY (Hz)
3k 10k
LT1457 • TPC07
0
2
4
6
8
10
TIME (SECONDS)
LT1457 • TPC08
Warm-Up Drift
150
VS = ±15V
TA = 25°C
120
90
S8 PACKAGE
60
N8 PACKAGE
30
0
0
1
2
3
4
5
TIME AFTER POWER ON (MINUTES)
LT1457 • TPC03
Long Term Drift of
Representative Units
50
40 VS = ±15V
TA = 25°C
30
20
10
0
–10
– 20
– 30
– 40
– 50
0
1
2
3
TIME (MONTHS)
4
5
LT1457 • TPC06
Channel Separation vs Frequency
160
140
LIMITED BY
THERMAL
120
INTERACTION AT
DC = 132dB
RS = 10Ω
100
LIMITED BY PIN TO
PIN CAPACITANCE
VS = ±15V
80 TA = 25°C
VIN = 20VP-P TO 5kHz
RL = 2k
RS = 1k
60
1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
LT1457 • TPC09
4
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