Datasheet

LT1028/LT1128
10
1028fb
Typical perForMance characTerisTics
LT1128
Total Harmonic Distortion vs
Closed-Loop Gain
Common Mode Limit Over
Temperature
LT1028
Total Harmonic Distortion vs
Frequency and Load Resistance
Common Mode Rejection Ratio
vs Frequency
Power Supply Rejection Ratio
vs Frequency
High Frequency Voltage Noise
vs Frequency
LT1028
Total Harmonic Distortion vs
Closed-Loop Gain
LT1128
Total Harmonic Distortion vs
Frequency and Load Resistance
TEMPERATURE (°C)
–50
V
–
COMMON MODE LIMIT (V)
REFERRED TO POWER SUPPLY
1
3
4
V
+
–3
0
50
75
1028 G37
2
–2
–1
–4
–25
25
100
125
V
S
= ±5V
V
S
= ±5V TO ±15V
V
S
= ±15V
FREQUENCY (Hz)
10
80
100
120
10k 1M
1028 G38
60
40
100 1k
100k 10M
20
0
COMMON MODE REJECTION RATIO (dB)
140
V
S
= ±15V
T
A
= 25°C
LT1128 LT1028
FREQUENCY (Hz)
0.1
POWER SUPPLY REJECTION RATIO (dB)
80
100
120
10M
1028 G39
60
40
0
10
1k
100k
20
160
140
1M
1
100
10k
V
S
= ±15V
T
A
= 25°C
NEGATIVE
SUPPLY
POSITIVE
SUPPLY
FREQUENCY (kHz)
1
0.001
TOTAL HARMONIC DISTORTION (%)
0.01
0.1
10 100
1028 G40
A
V
= 1000
R
L
= 600Ω
A
V
= 1000
R
L
= 2k
V
O
= 20V
P-P
V
S
= ±15V
T
A
= 25°C
A
V
= –1000
R
L
= 2k
A
V
= 1000
R
L
= 600Ω
CLOSED LOOP GAIN
0.001
TOTAL HARMONIC DISTORTION (%)
0.01
10 1k 10k 100k
1028 G41
0.0001
100
0.1
V
O
= 20V
P-P
f = 1kHz
V
S
= ±15V
T
A
= 25°C
R
L
= 10k
NON-INVERTING
GAIN
INVERTING
GAIN
MEASURED
EXTRAPOLATED
FREQUENCY (Hz)
10k
0.1
1.0
10
100k 1M
1028 G42
NOISE VOLTAGE DENSITY (nV/√Hz)
FREQUENCY (kHz)
1.0
0.001
TOTAL HARMONIC DISTORTION (%)
0.1
1.0
10 100
1028 G43
0.01
A
V
= 1000
R
L
= 600Ω
A
V
= –1000
R
L
= 2k
V
O
= 20V
P-P
V
S
= ±15V
T
A
= 25°C
A
V
= 1000
R
L
= 609Ω
A
V
= 1000
R
L
= 2k
CLOSED LOOP GAIN
0.001
TOTAL HARMONIC DISTORTION (%)
0.01
10 1k 10k 100k
1028 G44
0.0001
100
0.1
V
O
= 20V
P-P
f = 1kHz
V
S
= ±15V
T
A
= 25°C
R
L
= 10k
NON-INVERTING
GAIN
INVERTING
GAIN
MEASURED
EXTRAPOLATED