LF155-LF255-LF355 Datasheet, PDF (1/14 Pages) STMicroelectronics – WIDE BANDWIDTH SINGLE J-FET OPERATIONAL AMPLIFIERS

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/µs
. 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^oC, +70^oC
–40^oC, +105^oC
–55^oC, +125^oC
Package
ND
•
•
•
•
•
•
PIN CONNECTIONS (top view)
DE SC RI P TI O N
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
1
8
2
7
3
6
4
5
1 - Offset Null 1
2 - Inverting input
3 - Non-inverting input
4 - V_CC-
5 - Offset Null 2
6 - Output
7 - V_CC+
8 - N.C.
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