Datasheet

2
LT1251/LT1256
ORDER PART
NUMBER
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
PACKAGE/ORDER INFORMATION
W
U
U
ABSOLUTE MAXIMUM RATINGS
W
WW
U
LT1251CN
LT1251CS
LT1256CN
LT1256CS
T
JMAX
= 150°C, θ
JA
= 70°C/ W (N)
T
JMAX
= 150°C, θ
JA
= 100°C/ W (S)
Consult factory for Industrial and Military grade parts.
SIG AL A PLIFIER AC CHARACTERISTICS
U
W
0°C ≤ T
A
≤ 70°C, V
S
= ±5V, V
IN
= 1V
RMS
, f = 1kHz, A
VMAX
= 1, R
F1
= R
F2
= 1.5k, V
FS
= 2.5V, I
C
= I
FS
= NULL = Open, Pins 5,10 = GND,
unless otherwise noted.
(Note 2)
–
+
–
+
TOP VIEW
N PACKAGE
14-LEAD PDIP
S PACKAGE
14-LEAD PLASTIC SO
IN2
FB2
V
FS

I
FS

R
FS

V
+

V
OUT
2
–
+
–
+
1
2
3
4
5
6
7
IN1
FB1
V
C

I
C

R
C

NULL
V
–
14
13
12
11
10
9
8
CONTROL
1
CFS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
2%IN1 2% Input 1 Gain V
C
(Pin 3) = 0.05V LT1251 ● 0 0.1 %
LT1256 ● 0.1 5.0 %
10%IN1 10% Input 1 Gain V
C
(Pin 3) = 0.25V ● 713%
20%IN1 20% Input 1 Gain V
C
(Pin 3) = 0.50V ● 17 23 %
30%IN1 30% Input 1 Gain V
C
(Pin 3) = 0.75V ● 27 33 %
40%IN1 40% Input 1 Gain V
C
(Pin 3) = 1.00V ● 37 43 %
50%IN1 50% Input 1 Gain V
C
(Pin 3) = 1.25V ● 47 53 %
60%IN1 60% Input 1 Gain V
C
(Pin 3) = 1.50V ● 57 63 %
70%IN1 70% Input 1 Gain V
C
(Pin 3) = 1.75V ● 67 73 %
80%IN1 80% Input 1 Gain V
C
(Pin 3) = 2.00V ● 77 83 %
90%IN1 90% Input 1 Gain V
C
(Pin 3) = 2.25V ● 87 93 %
98%IN1 98% Input 1 Gain V
C
(Pin 3) = 2.45V LT1251 ● 99.9 100.0 %
LT1256 ● 95.0 99.9 %
2%IN2 2% Input 2 Gain V
C
(Pin 3) = 2.45V LT1251 ● 0 0.1 %
LT1256 ● 0.1 5.0 %
10%IN2 10% Input 2 Gain V
C
(Pin 3) = 2.25V ● 713%
20%IN2 20% Input 2 Gain V
C
(Pin 3) = 2.00V ● 17 23 %
30%IN2 30% Input 2 Gain V
C
(Pin 3) = 1.75V ● 27 33 %
40%IN2 40% Input 2 Gain V
C
(Pin 3) = 1.50V ● 37 43 %
50%IN2 50% Input 2 Gain V
C
(Pin 3) = 1.25V ● 47 53 %
60%IN2 60% Input 2 Gain V
C
(Pin 3) = 1.00V ● 57 63 %
70%IN2 70% Input 2 Gain V
C
(Pin 3) = 0.75V ● 67 73 %
80%IN2 80% Input 2 Gain V
C
(Pin 3) = 0.50V ● 77 83 %
90%IN2 90% Input 2 Gain V
C
(Pin 3) = 0.25V ● 87 93 %
98%IN2 98% Input 2 Gain V
C
(Pin 3) = 0.05V LT1251 ● 99.9 100.0 %
LT1256 ● 95.0 99.9 %
Gain Drift with Temperature V
C
(Pin 3) = 0.75V N Package 50 ppm/°C
(Worst Case at 30% Gain) V
C
(Pin 3) = 0.75V S Package 400 ppm/°C