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LM146J Datasheet

  • LM146J

  • National Semiconductor [Programmable Quad Operational Ampli...

  • 730.00KB

  • NSC

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LM146/LM346 Programmable Quad Operational Amplifiers
May 1999
LM146/LM346
Programmable Quad Operational Amplifiers
General Description
The LM146 series of quad op amps consists of four indepen-
dent, high gain, internally compensated, low power, pro-
grammable amplifiers. Two external resistors (R
SET
) allow
the user to program the gain bandwidth product, slew rate,
supply current, input bias current, input offset current and in-
put noise. For example, the user can trade-off supply current
for bandwidth or optimize noise figure for a given source re-
sistance. In a similar way, other amplifier characteristics can
be tailored to the application. Except for the two program-
ming pins at the end of the package, the LM146 pin-out is
the same as the LM124 and LM148.
Features
(I
SET
= 10 碌A(chǔ))
n
Programmable electrical characteristics
n
Battery-powered operation
n
Low supply current: 350 碌A(chǔ)/amplifier
n
Guaranteed gain bandwidth product: 0.8 MHz min
n
Large DC voltage gain: 120 dB
n
Low noise voltage: 28
n
Wide power supply range:
鹵
1.5V to
鹵
22V
n
Class AB output stage鈥搉o crossover distortion
n
Ideal pin out for Biquad active filters
n
Input bias currents are temperature compensated
PROGRAMMING EQUATIONS
Total Supply Current = 1.4 mA (I
SET
/10 碌A(chǔ))
Gain Bandwidth Product = 1 MHz (I
SET
/10 碌A(chǔ))
Slew Rate = 0.4V/碌s (I
SET
/10 碌A(chǔ))
Connection Diagram
Dual-In-Line Package
Input Bias Current
鈮?/div>
50 nA (I
SET
/10 碌A(chǔ))
I
SET
= Current into pin 8, pin 9 (see schematic-diagram)
DS005654-1
Top View
Order Number LM146J, LM146J/883,
LM346M or LM346N
See NS Package Number
J16A, M16A or N16A
漏 1999 National Semiconductor Corporation
DS005654
www.national.com

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