LT1112 Datasheet, PDF (8/12 Pages) Linear Technology – Dual/Quad Low Power Precision, Picoamp Input Op Amps

LT1112/LT1114
TYPICAL PERFOR A CE CHARACTERISTICS
Voltage Gain
–15
V_S = ±15V
T_A = 25°C
–10
–5
R_L = 10k
0
R_L = 2k
5
10
15
–15
–10 –5
0
5
10 15
OUTPUT VOLTAGE (V)
LT1112/14 • TPC19
Common-Mode Rejection
vs Frequency
140
V_S = ±15V
120
T_A = 25°C
100
80
60
40
20
0
1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
LT1112/14 • TPC22
Slew Rate, Gain-Bandwidth
Product and Phase Margin
vs Temperature
0.4
SLEW
0.3
80
0.2
φm
70
800
60
GBW
700
Voltage Gain vs Frequency
140
V_S = ±15V
120
T_A = 25°C
100
80
60
40
20
0
–20
0.01 0.1 1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
LT1112/14 • TPC20
Gain, Phase Shift vs Frequency
40
100
V_S = ±15V
T_A = 25°C
30
120
PHASE
20
140
GAIN
10
160
0
180
PHASE MARGIN = 70°C
–10
0.01
200
0.1
1
10
FREQUENCY (MHz)
LT1112/14 • TPC21
Power Supply Rejection
vs Frequency
140
V_S = ±15V
120
T_A = 25°C
NEGATIVE
SUPPLY
100
80
POSITIVE
SUPPLY
60
40
20
0.1 1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
LT1112/14 • TPC23
Channel Separation vs Frequency
160
V_S = ±15V
T_A = 25°C
140
120
100
AMP 1 IN UNITY-GAIN
20V_P-P, R_L = 2k
80 ^{AMP 2 IN GAIN = 1000}
R_S = 100Ω, R_F = 100k
1 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
LT1112/14 • TPC24
Closed-Loop Output Impedance
1000
100
V_S = ±15V
T_A = 25°C
10
A_V = 100
1
A_V = +1
0.1
0.01
Capacitive Loading Handling
120
V_S = ±15V
100 ^{TA = 25°C}
80
60
A_V = +1
40
A_V = 10
20
600
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1112/14 • TPC25
0.001
1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
LT1112/14 • TPC26
0
0.00001 0.0001 0.001 0.01 0.1 1 10
CAPACITIVE LOAD (µF)
LT1112/14 • TPC27
8