LT1112 Datasheet, PDF (7/12 Pages) Linear Technology – Dual/Quad Low Power Precision, Picoamp Input Op Amps

LT1112/LT1114
TYPICAL PERFOR A CE CHARACTERISTICS
Noise Spectrum
1000
V_S = ±1V TO ±20V
T_A = 25°C
100
CURRENT NOISE
0.1Hz to 10Hz Noise
V_S = ±15V
T_A = 25°C
0.01Hz to 1Hz Noise
V_S = ±15V
T_A = 25°C
10
1/f_CORNER
2.5Hz
VOLTAGE NOISE
1/f_CORNER
140Hz
1
1
10
100
1000
FREQUENCY (Hz)
LT1112/14 • TPC10
Warm-Up Drift
3
V_S = ±15V
T_A = 25°C
2
LT1112S8, LT1114N/S PACKAGES
1
LT1114J PACKAGE
LT1112J8, N8 PACKAGES
0
2
4
6
8
10
TIME (SEC)
LT1112/14 • TPC11
Long Term Stability of Three
Representative Units
6
V_S = ±15V
T_A = 25°C
2A
4
2
3A
2B
0
1A
–2
3B
1B
–4
0
0
0.5
1.0
1.5
2.0
2.5
TIME AFTER POWER ON (MINUTES)
LT1112/14 • TPC13
Minimum Supply Voltage vs Temp
Voltage Gain at Minimum Supply
Voltage
±1.2
±1.1
±1.0
±0.9
100
80
60
40
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1112/14 • TPC16
–6
0
1
2
3
4
TIME (MONTHS)
56
LT1112/14 • TPC14
Common-Mode Range and
Voltage Swing with Respect to
Supply Voltages
V⁺
V⁺ – 0.2
V⁺ – 0.4
V⁺ – 0.6
V_S = ±1V TO ±20V
I_L < 100µA
SWING
V⁺ – 0.8
V⁺ – 1.0
CM RANGE
V^– + 0.8
V^– + 0.6
V^– + 0.4
SWING
CM RANGE
V^– + 0.2
V^–
–75
–25
25
75
125
TEMPERATURE (°C)
LT1112/14 • TPC17
0
20
40
60
80 100
TIME (SEC)
LT1112/14 • TPC12
Supply Current per Amplifier
vs Supply Voltage
600
500
400
300
200
0
T_A = 125°C
T_A = 25°C
T_A = –55°C
±5
±10
±15
±20
SUPPLY VOLTAGE (V)
LT1112/14 • TPC15
Output Voltage Swing
vs Load Current
V⁺
V⁺ – 1
V⁺ – 2
V⁺ – 3
V_S = ±1V TO ± 20V
T_A = 25°C
MAX I_L AT ±1V = 1.3mA
AT ±1.5V = 3mA
V^– + 3
V^– + 2
V^– + 1
V^–
–9
–6 –3 0
3
69
SINK
SOURCE
OUTPUT CURRENT (mA)
LT1112/14 • TPC18
7