Datasheet
6
LT1055/LT1056
10556fc
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
0.1Hz to 10Hz Noise
Warm-Up Drift
Distribution of Offset Voltage Drift
with Temperature (H Package)*
Long Term Drift of
Representative Units
TIME (SECONDS)
0
NOISE VOLTAGE (1µV/DIVISION)
8
LT1055/56 GO7
2
4
6
10
LT1056
LT1055
RMS NOISE VOLTAGE DENSITY (nV/√Hz)
FREQUENCY (Hz)
1
100
30
300
LT1055/56 G09
30
10
3 10 100
300
1000
1000
LT1056
1/f CORNER = 28HZ
LT1055
1/f CORNER
= 20HZ
V
S
= ±15V
T
A
= 25°C
Voltage Noise vs FrequencyNoise vs Chip Temperature
CHIP TEMPERATURE (°C)
20
1
2
3
5
7
10
10
20
30
50
70
100
40
LT1055/56 G08
0.1Hz TO 10Hz PEAK-TO-PEAK NOISE (µV/
P-P
)
10
8030
50 60 70
f
0
= 10kHz
f
0
= 1kHz
PEAK-TO-PEAK
NOISE
RMS NOISE VOLTAGE DENSITY (nV/√Hz)
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
–10
0
BATTERY VOLTAGE (V)
20
60
80
100
140
–8
0
4
LT1055/56 G04
40
120
–2
8
10
–6
–4
26
*DISTRIBUTION IN THE PLASTIC (N8) PACKAGE
IS SIGNIFICANTLY WIDER.
V
S
= ±15V
634 UNITS TESTED
FROM THREE RUNS
50% TO
±1.5µV/°C
TIME AFTER POWER ON (MINUTES)
0
CHANGE IN OFFSET VOLTAGE (µV)
60
80
100
4
LT1055/56 G05
40
20
0
1
2
3
5
V
S
= ±15V
T
A
= 25°C
LT1056CN8
LT1055CN8
LT1056 H PACKAGE
LT1055 H PACKAGE
TIME (MONTHS)
0
OFFSET VOLTAGE CHANGE µV)
50
–50
40
–40
30
–30
20
–20
10
–10
0
4
LT1055/56 GO6
1
2
3
5
V
S
= ±15V
T
A
= 25°C
LT1055/56 G02
COMMON MODE INPUT VOLTAGE (V)
–15
–120
INPUT BIAS CURRENT, T
A
= 25°C, T
A
= 70°C (pA)
–80
–40
0
40
120
–10
–5 0 5 10 15
80
–1200
–800
–400
0
400
1200
800
V
S
= ±15V
WARMED UP
T
A
= 125°C
T
A
= 125°C
T
A
= 25°C
T
A
= 70°C
T
A
= 70°C
A = POSITIVE INPUT CURRENT
B = NEGATIVE INPUT CURRENT
A
B
B
A
INPUT BIAS CURRENT, T
A
= 125°C (pA)
Input Bias and Offset Currents
vs Temperature
AMBIENT TEMPERATURE (°C)
0
INPUT BIAS AND OFFSET CURRENT (pA)
100
300
1000
100
LT1055/56 G01
30
10
3
25
50
75
125
BIAS OR OFFSET CURRENTS
MAY BE POSITIVE OR NEGATIVE
BIAS CURRENT
OFFSET CURRENT
V
S
= ±15V
V
CM
= 0V
WARMED UP
Input Bias Current Over the
Common Mode Range
Distribution of Input Offset
Voltage (N8 Package)
INPUT OFFSET VOLTAGE (µV)
–800
NUMBER OF INPUTS
80
100
120
800
LT1055/56 G03
60
40
0
–400
0
400
20
160
140
–600
–200
200
600
V
S
= ±15V
T
A
= 25°C
550 UNITS
TESTED FROM
TWO RUNS
(LT1056)
50% YIELD
TO ±140µV