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LF157-LF257-LF357 Datasheet

  • LF157-LF257-LF357

  • WIDE BANDWIDTH SINGLE J-FET OPERATIONAL AMPLIFIERS

  • 14頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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廬
LF155-LF255-LF355
LF156-LF256-LF356
LF157-LF257-LF357
WIDE BANDWIDTH
SINGLE J-FET OPERATIONAL AMPLIFIERS
.
.
.
.
.
.
.
.
.
.
.
HIGH INPUT IMPEDANCE J-FET INPUT
STAGE
HIGH SPEED J-FET OP-AMPs : up to 20MHz,
50V/碌s
OFFSET VOLTAGE ADJUSTMENT DOES NOT
DEGRADE DRIFT OR COMMON-MODE
REJECTION AS IN MOST OF MONOLITHIC
AMPLIFIERS
INTERNAL COMPENSATION AND LARGE
DIFFERENTIAL INPUT VOLTAGECAPABILITY
(UP TO V
CC+
)
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
TYPICAL APPLICATIONS
PRECISION HIGH SPEED INTEGRATORS
FAST D/A AND CONVERTERS
HIGH IMPEDANCE BUFFERS
WIDEBAND, LOW NOISE, LOW DRIFT
AMPLIFIERS
LOGARITHIMIC AMPLIFIERS
PHOTOCELL AMPLIFIERS
SAMPLE AND HOLD CIRCUITS
ORDER CODES
Part Number
LF355, LF356, LF357
LF255, LF256, LF257
LF155, LF156, LF157
Example :
LF355N
Temperature
Range
0
o
C, +70
o
C
鈥?0 C, +105 C
鈥?5 C, +125 C
o
o
o
o
Package
N
鈥?/div>
鈥?/div>
鈥?/div>
D
鈥?/div>
鈥?/div>
鈥?/div>
PIN CONNECTIONS
(top view)
1
DESCRIPTION
These circuits are monolithic J-FET input operational
amplifiers incorporating well matched, high voltage
J-FET on the same chip with standard bipolar transis-
tors.
This amplifiers feature low input bias and offset cur-
rents, low input offset voltage and input offset voltage
drift,coupledwith offsetadjust which doesnot degrade
drift or common-mode rejection.
The devices are also designed for high slew rate, wide
bandwidth,extremelyfastsettlingtime, lowvoltageand
current noise and a low 1/f noise level.
July 1998
8
7
6
5
1
2
3
4
- Offset Null 1
- Inverting input
- Non-inverting input
- V
CC-
5
6
7
8
-
-
-
-
Offset Null 2
Output
+
V
CC
N.C.
2
3
4
1/14

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