LT1251/LT1256
W W
U W
U
W U
ABSOLUTE MAXIMUM RATINGS
PACKAGE/ORDER INFORMATION
Total Supply Voltage (V+ to V–) .............................. 36V
Input Current ...................................................... ±15mA
Input Voltage on Pins 3,4,5,10,11,12 ............... V– to V+
Output Short-Circuit Duration (Note 1)........ Continuous
Specified Temperature Range (Note 2)....... 0°C to 70°C
Operating Temperature Range ............... –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Junction Temperature (Note 3)............................ 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
TOP VIEW
ORDER PART
NUMBER
IN2
FB2
IN1
FB1
1
2
3
4
5
6
7
14
13
12
11
10
9
+
–
+
–
1
2
CONTROL
LT1251CN
LT1251CS
LT1256CN
LT1256CS
+
–
+
–
V
FS
V
C
C
FS
I
FS
I
C
R
R
C
FS
+
V
NULL
(Note 2)
–
V
V
8
OUT
N PACKAGE
14-LEAD PDIP
S PACKAGE
14-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 70°C/ W (N)
JMAX = 150°C, θJA = 100°C/ W (S)
T
Consult factory for Industrial and Military grade parts.
U
W
SIG AL A PLIFIER AC CHARACTERISTICS
0°C ≤ TA ≤ 70°C, VS = ±5V, VIN = 1VRMS, f = 1kHz, AVMAX = 1, RF1 = RF2 = 1.5k, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND,
unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
V (Pin 3) = 0.05V
MIN
TYP
MAX
UNITS
2%IN1
2% Input 1 Gain
LT1251
LT1256
●
●
0
0.1
0.1
5.0
%
%
C
10%IN1
20%IN1
30%IN1
40%IN1
50%IN1
60%IN1
70%IN1
80%IN1
90%IN1
98%IN1
10% Input 1 Gain
20% Input 1 Gain
30% Input 1 Gain
40% Input 1 Gain
50% Input 1 Gain
60% Input 1 Gain
70% Input 1 Gain
80% Input 1 Gain
90% Input 1 Gain
98% Input 1 Gain
V (Pin 3) = 0.25V
●
●
●
●
●
●
●
●
●
7
13
23
33
43
53
63
73
83
93
%
%
%
%
%
%
%
%
%
C
V (Pin 3) = 0.50V
17
27
37
47
57
67
77
87
C
V (Pin 3) = 0.75V
C
V (Pin 3) = 1.00V
C
V (Pin 3) = 1.25V
C
V (Pin 3) = 1.50V
C
V (Pin 3) = 1.75V
C
V (Pin 3) = 2.00V
C
V (Pin 3) = 2.25V
C
V (Pin 3) = 2.45V
C
LT1251
LT1256
●
●
99.9
95.0
100.0
99.9
%
%
2%IN2
2% Input 2 Gain
V (Pin 3) = 2.45V
C
LT1251
LT1256
●
●
0
0.1
0.1
5.0
%
%
10%IN2
20%IN2
30%IN2
40%IN2
50%IN2
60%IN2
70%IN2
80%IN2
90%IN2
98%IN2
10% Input 2 Gain
20% Input 2 Gain
30% Input 2 Gain
40% Input 2 Gain
50% Input 2 Gain
60% Input 2 Gain
70% Input 2 Gain
80% Input 2 Gain
90% Input 2 Gain
98% Input 2 Gain
V (Pin 3) = 2.25V
●
●
●
●
●
●
●
●
●
7
13
23
33
43
53
63
73
83
93
%
%
%
%
%
%
%
%
%
C
V (Pin 3) = 2.00V
17
27
37
47
57
67
77
87
C
V (Pin 3) = 1.75V
C
V (Pin 3) = 1.50V
C
V (Pin 3) = 1.25V
C
V (Pin 3) = 1.00V
C
V (Pin 3) = 0.75V
C
V (Pin 3) = 0.50V
C
V (Pin 3) = 0.25V
C
V (Pin 3) = 0.05V
C
LT1251
LT1256
●
●
99.9
95.0
100.0
99.9
%
%
Gain Drift with Temperature
(Worst Case at 30% Gain)
V (Pin 3) = 0.75V
V (Pin 3) = 0.75V
C
N Package
S Package
50
400
ppm/°C
ppm/°C
C
2
Linear [ Linear ]
