LT1251/LT1256
U W
TYPICAL PERFORMANCE CHARACTERISTICS
Slew Rate vs Full-Scale
Reference Voltage
Power Supply Rejection Ratio
vs Frequency
Slew Rate vs Temperature
80
70
60
50
40
30
20
10
0
350
300
250
200
150
100
50
A
V
= 1
V
= ±5V
= 1
V
A
= ±5V
= 1
S
V
S
V
F
350
300
250
200
A
POSITIVE
NEGATIVE
R = 1.5k
NO LOAD
V
= ±15V
S
V
= V = 2.5V
FS
C
V
= ±5V
S
0
0.5
1.0
1.5
2.0
2.5
–25
0
25
TEMPERATURE (°C)
50
75
125
0
–50
100
1k
10k
100k
FREQUENCY (Hz)
1M
10M
FULL-SCALE REFERENCE VOLTAGE (V)
1251/56 G29
1251/56 G30
1251/56 G31
Settling Time to 10mV
vs Output Step
Settling Time to 1mV
vs Output Step
Output Impedance vs Frequency
10
8
10
8
100
10
V
= ±15V
S
V
R
V
= ±5V
= 1.5k
S
F
R = 1.5k
F
NONINVERTING
6
= V = 2.5V
FS
6
C
INVERTING
4
4
INVERTING,
NONINVERTING
2
2
V
= ±15V
S
0
0
1
R = 1.5k
F
–2
–4
–6
–8
–10
A
= 100
100k
–2
–4
–6
–8
–10
V
INVERTING
A
= 1, 10
1M
NONINVERTING
V
0.1
INVERTING
50
NONINVERTING
0.01
0
100
150
200
0
25
75
100
125
150
50
10k
10M
100M
SETTLING TIME (ns)
SETTLING TIME (ns)
FREQUENCY (Hz)
1251/56 G34
1251/56 G33
1251/56 G32
LT1251
Switching Transient (Glitch)
Differential Gain vs
Controlled Gain
Differential Phase vs
Controlled Gain
1.0
0.5
0
2
1
0
50mV
0
VOUT
–50mV
2.5
VC
0
VFS = 2.5V
R
V
F1 = RF2 = 1.5k
S = ±5V
1251/56 G37
50
60
70
80
90
100
50
60
70
80
90
100
CONTROLLED GAIN, V /V (%)
CONTROLLED GAIN, V /V (%)
C
FS
C
FS
1251/56 G36
1251/56 G35
8
Linear [ Linear ]
