1/4

TERISTICS

µA/amplifier)

√Hz

±22V

CROSS-OVER DISTORTION

AND OUTPUTS

DESCRIPTION

The LM346 consists of four independent, high

gain, internally compensated, low power program-

low the user to program the gain-bandwith prod-

uct, slew rate, supply current, input bias current,

input offset current and input noise. For example

the user can trade-off supply current for bandwith

or optimize noise figure for a given source resis-

tance. In a similar way other amplifier characteris-

tics can be tailored to the application.

Except for the two programming pins at the end of

the package the LM346 pin out is the same as the

LM324 and LM348.

PROGRAMMING EQUATIONS :

Slew rate = 0.5V/

µs (I

Input bias current

≈30nA (I

diagram)

ORDER CODE

N = Dual in Line Package (DIP))

PIN CONNECTIONS (top view)

Part

Number

Temperature

Range

Package

N

LM146

-55°C, +125°C

•

LM246

-40°C, +105°C

•

LM346

0°C, +70°C

•

Example : LM246N

I

se t

Vcc+

Vcc

-

–

0.6 V

–

R

set

-----------------------------------------------------

=

N

DIP16

(Plastic Package)

CC

V

+

1

2

3

4

5

6

7

9

10

11

12

13

14

N o n-in v e rtin g Inp u t 2

-

+

-

+

Ou tp u t 1

N o n-in v e rtin g in put 1

In v e rtin g Inpu t 1

-

CC

V

In v e rtin g Inp ut 2

Ou tp u t 2

8

15

16

Ou tp u t 4

In v e rtin g Inp ut 4

N on-in v e rtin g inp ut 4

N o n -in v e rtin g in p u t 3

In v e rtin g in put 3

Ou tp u t 3

Set

Set

LM146

LM246

LM346

PROGRAMMABLE

QUAD BIPOLAR OPERATIONAL AMPLIFIER

April 2003