Datasheet

7
LT1112/LT1114
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
0.1Hz to 10Hz Noise 0.01Hz to 1Hz Noise
Supply Current per Amplifier
vs Supply Voltage
TIME (MONTHS)
0
–6
CHANGE IN OFFSET VOLTAGE (µV)
–4
–2
0
2
6
1
234
LT1112/14 • TPC14
56
4
V
S
= ±15V 
T
A
= 25°C
2A
2B
1A
1B
3A
3B
Long Term Stability of Three
Representative Units
Common-Mode Range and
Voltage Swing with Respect to
Supply Voltages
Output Voltage Swing
vs Load Current
Warm-Up Drift
SUPPLY VOLTAGE (V)
0
SUPPLY CURRENT PER AMPLIFIER (µA)
400
500
±20
LT1112/14 • TPC15
300
200
±5
±10
±15
600
T
A
= 125°C
T
A
= 25°C
T
A
= –55°C
Noise Spectrum
FREQUENCY (Hz)
1
1
10
100
1000
10 100 1000
LT1112/14 • TPC10
VOLTAGE NOISE DENSITY (nV/√Hz)
CURRENT NOISE DENSITY (fA/√Hz)
V
S
= ±1V TO ±20V
T
A
= 25°C
CURRENT NOISE
VOLTAGE NOISE
1/f
CORNER

2.5Hz
1/f
CORNER

140Hz
Minimum Supply Voltage vs Temp
Voltage Gain at Minimum Supply
Voltage
TIME (SEC)
0
NOISE VOLTAGE (0.2µV/DIV)
8
LT1112/14 • TPC11
2
4
6
10
V
S
= ±15V
T
A
= 25°C
TIME AFTER POWER ON (MINUTES)
0
0
CHANGE IN OFFSET VOLTAGE (µV)
1
2
3
0.5 1.0 1.5 2.0
LT1112/14 • TPC13
2.5
V
S
= ±15V 
T
A
= 25°C
LT1112S8, LT1114N/S PACKAGES
LT1114J PACKAGE
LT1112J8, N8 PACKAGES
OUTPUT CURRENT (mA)
–9

V
+
– 1
06
LT1112/14 • TPC18
–6 –3
39
V
–
OUTPUT SWING (V)
V
+
V
+
– 2
V
+
– 3
V
–
+ 3
V
–
+ 2
V
–
+ 1
SINK SOURCE
V
S
= ±1V TO ±20V
T
A
= 25°C
MAX I
L
AT ±1V = 1.3mA
AT ±1.5V = 3mA
TEMPERATURE (°C)
–75
V
–
COMMON-MODE RANGE OR OUTPUT SWING (V)
V
+
–25
LT1112/14 • TPC17
V
+
– 0.2
25
125
V
+
– 0.4
V
+
– 0.6
V
+
– 0.8
V
+
– 1.0
V
–
+ 0.8
V
–
+ 0.6
V
–
+ 0.4
V
–
+ 0.2
75
V
S
= ±1V TO ±20V
I
L
< 100µA
SWING
CM RANGE
SWING
CM RANGE
TEMPERATURE (°C)
–50
MINIMUM SUPPLY (V)
60
80
100
±1.2
±0.9
0
50
75
LT1112/14 • TPC16
40
±1.0
±1.1
–25
25
100
125
VOLTAGE GAIN (V/mV)
TIME (SEC)
0
NOISE VOLTAGE (0.2µV/DIV)
80
LT1112/14 • TPC12
20
40
60
100
V
S
= ±15V
T
A
= 25°C