LT1028 Datasheet, PDF (7/20 Pages) Linear Technology – Ultra Low Noise Precision High Speed Op Amps

TYPICAL PERFOR A CE CHARACTERISTICS
Voltage Gain vs Frequency
160
140
V_S = ±15V
T_A = 25°C
120
R_L = 2k
100
LT1128
LT1028
80
60
40
20
0
–20
0.01 0.1 1 10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
LT1028/1128 • TPC19
LT1028
Gain, Phase vs Frequency
70
70
PHASE
60
60
50
50
40
40
30
30
GAIN
20
20
10
V_S = ±15V
0 T_A = 25°C
C_L = 10pF
–10
10k
100k
1M
10M
FREQUENCY (Hz)
10
0
–10
100M
LT1028/1128 • TPC20
Gain Error vs Frequency
Closed-Loop Gain = 1000
1
TYPICAL
PRECISION
OP AMP
LT1128
0.1
LT1028
0.01
0.001
0.1
GAIN ERROR = ^{CLOSED-LOOP GAIN}
OPEN-LOOP GAIN
1
10
100
FREQUENCY (Hz)
LT1028/1128 • TPC22
LT1128
Gain Phase vs Frequency
70
70
60
60
PHASE
50
50
40
40
30
30
20
GAIN
10
V_S = ±15V
0 T_A = 25°C
C_L = 10pF
–10
10k
100k
1M
10M
FREQUENCY (Hz)
20
10
0
–10
100M
LT1028/1128 • TPC23
Voltage Gain vs Supply Voltage
100
T_A = 25°C
R_L = 2k
10
R_L = 600Ω
Voltage Gain vs Load Resistance
100
V_S = ±15V
T_A = –55°C
10
T_A = 25°C
T_A = 125°C
I_LMAX = 35mA AT –55°C
= 27mA AT 25°C
1
1
0
±5
±10
±15
±20
0.1
= 16mA AT 125°C
1
10
SUPPLY VOLTAGE (V)
LOAD RESISTANCE (kΩ)
LT`1028/1128 • TPC25
LT1028/1128 • TPC26
LT1028/LT1128
LT1028
Capacitance Load Handling
80
30pF
70
2k
60 ^{RS –}
+
50
CL
40
30
20
10
0
10
A_V = –1, R_S = 2k
A_V = –10
R_S = 200Ω
A_V = –100
R_S = 20Ω
V_S = ±15V
T_A = 25°C
100
1000
CAPACITIVE LOAD (pF)
10000
LT1028/1128 • TPC21
LT1128
Capacitance Load Handling
80
30pF
70
2k
60
RS _–
+
50
CL
40
30
20
10
0
10
A_V = –1, R_S = 2k
A_V = –10
R_S = 200Ω
A_V = –100, R_S = 20Ω
V_S = ±15V
T_A = 25°C
V_O = 10mV_P-P
100
1000
10000
CAPACITIVE LOAD (pF)
LT1028/1128 • TPC 24
Maximum Undistorted Output
vs Frequency
30
V_S = ±15V
25
T_A = 25°C
R_L = 2k
20
15
LT1128
LT1028
10
5
10k
100k
1M
10M
FREQUENCY (Hz)
LT1028/1128 • TPC27
7