Datasheet

2
LT1228
1228fc
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
(Note 1)
8
7
6
54
3
2
1I
OUT
–IN
+IN
V
–
I
SET
V
OUT
V
+
GAIN
TOP VIEW
N8 PACKAGE
8-LEAD PLASTIC DIP
S8 PACKAGE
8-LEAD PLASTIC SOIC
J8 PACKAGE
8-LEAD CERAMIC DIP
+–
g
m
ORDER PART
NUMBER
LT1228CN8
LT1228CS8
LT1228IN8
LT1228IS8
S8 PART MARKING
1228
1228I
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage T
A
= 25°C ±3 ±10 mV
● ±15 mV
Input Offset Voltage Drift ● 10 µV/°C
I
IN
+
Noninverting Input Current T
A
= 25°C ±0.3 ±3 µA
● ±10 µA
I
IN
–
Inverting Input Current T
A
= 25°C ±10 ±65 µA
● ±100 µA
e
n
Input Noise Voltage Density f = 1kHz, R
F
= 1k, R
G
= 10Ω, R
S
= 0Ω 6 nV/√Hz
i
n
Input Noise Current Density f = 1kHz, R
F
= 1k, R
G
= 10Ω, R
S
= 10k 1.4 pV/√Hz
R
IN
Input Resistance V
IN
= ±13V, V
S
= ±15V ● 225 MΩ
V
IN
= ±3V, V
S
= ±5V ● 225 MΩ
C
IN
Input Capacitance (Note 3) V
S
= ±5V 6 pF
Input Voltage Range V
S
= ±15V, T
A
= 25°C ±13 ±13.5 V
● ±12 V
V
S
= ±5V, T
A
= 25°C ±3 ±3.5 V
● ±2V
CMRR Common Mode Rejection Ratio V
S
= ±15V, V
CM
= ±13V, T
A
= 25°C5569dB
V
S
= ±15V, V
CM
= ±12V ● 55 dB
V
S
= ±5V, V
CM
= ±3V, T
A
= 25°C5569dB
V
S
= ±5V, V
CM
= ±2V ● 55 dB
E
LECTR
IC
AL C CHARA TERIST
ICS
T
J MAX
= 150°C, θ
JA
= 100°C/W (N)
T
J MAX
= 150°C, θ
JA
= 150°C/W (S)
OBSOLETE PACKAGE
T
J MAX
= 175°C, θ
JA
= 100°C/W (J)
Supply Voltage ...................................................... ±18V
Input Current, Pins 1, 2, 3, 5, 8 (Note 8) ............ ±15mA
Output Short Circuit Duration (Note 2) .........Continuous
Operating Temperature Range
LT1228C................................................ 0°C to 70°C
LT1228I ............................................. –40°C to 85°C
LT1228M (OBSOLETE) .............. –55°C to 125°C
Storage Temperature Range ..................–65°C to 150°C
Junction Temperature
Plastic Package .............................................. 150°C
Ceramic Package (OBSOLETE) ................ 175°C
Lead Temperature (Soldering, 10 sec).................. 300°C
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. Current Feedback Amplifier, Pins 1, 6, 8. ±5V ≤ V
S
≤ ±15V, I
SET
= 0µA,
V
CM
= 0V unless otherwise noted.
LT1228MJ8
LT1228CJ8
ORDER PART
NUMBER
Consider the N8 or S8 Packages for Alternate Source.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/