LT1028_01 Datasheet, PDF (9/20 Pages) Linear Technology – Ultralow Noise Precision High Speed Op Amps

LT1028/LT1128
TYPICAL PERFOR A CE CHARACTERISTICS
Common Mode Limit Over
Temperature
V⁺
–1
–2
V_S = ±5V
–3
V_S = ±15V
–4
4
3
2
V_S = ±5V TO ±15V
1
V^–
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1028/1128 • TPC37
LT1028
Total Harmonic Distortion vs
Frequency and Load Resistance
0.1
A_V = 1000
R_L = 2k
A_V = 1000
R_L = 600Ω
Common Mode Rejection Ratio
vs Frequency
140
V_S = ±15V
120
T_A = 25°C
100
LT1128
LT1028
80
60
40
20
0
10 100
1k 10k 100k 1M 10M
FREQUENCY (Hz)
LT1028/1128 • TPC38
LT1028
Total Harmonic Distortion vs
Closed-Loop Gain
0.1
V_O = 20V_P-P
f = 1kHz
V_S = ±15V
T_A = 25°C
0.01 ^{RL = 10k}
NON-INVERTING
GAIN
Power Supply Rejection Ratio
vs Frequency
160
140
V_S = ±15V
T_A = 25°C
120
100
NEGATIVE
SUPPLY
80
POSITIVE
SUPPLY
60
40
20
0
0.1 1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
LT1028/1128 • TPC39
High Frequency Voltage Noise
vs Frequency
10
0.01
0.001
1
A_V = –1000
R_L = 2k
A_V = 1000
R_L = 600Ω
V_O = 20V_P-P
V_S = ±15V
T_A = 25°C
10
100
FREQUENCY (kHz)
LT1028/1128 • TPC40
0.001
0.0001
10
INVERTING
GAIN
MEASURED
EXTRAPOLATED
100
1k
10k
100k
CLOSED LOOP GAIN
LT1028/1128 • TPC41
1.0
0.1
10k
100k
1M
FREQUENCY (Hz)
LT1028/1128 • TPC42
LT1128
Total Harmonic Distortion vs
Frequency and Load Resistance
1.0
A_V = 1000
0.1
A_V = 1000 ^{RL = 600Ω}
R_L = 2k
LT1128
Total Harmonic Distortion vs
Closed-Loop Gain
0.1
V_O = 20V_P-P
f = 1kHz
V_S = ±15V
T_A = 25°C
0.01 ^{RL = 10k}
NON-INVERTING
GAIN
A_V = –1000
R_L = 2k
0.01
A_V = 1000
R_L = 600Ω
0.001
INVERTING
GAIN
0.001
1.0
V_O = 20V_P-P
V_S = ±15V
T_A = 25°C
10
100
FREQUENCY (kHz)
LT1028/1128 • TPC43
0.0001
10
MEASURED
EXTRAPOLATED
100
1k
10k
100k
CLOSED LOOP GAIN
LT1028/1128 • TPC44
9