Datasheet > LM146_03

LM146_03

更新时间： 2024-09-19 04:20:15

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		运算放大器
页数	文件大小	规格书
4页	150K
描述
PROGRAMMABLE QUAD BIPOLAR OPERATIONAL AMPLIFIERS

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中文翻译

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数据手册

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LM146_03 数据手册

LM146

LM246

LM346

PROGRAMMABLE

QUAD BIPOLAR OPERATIONAL AMPLIFIER

■ PROGRAMMABLE ELECTRICAL CHARAC-

TERISTICS

■ LOW SUPPLY CURRENT (250µA/amplifier)

■ GAIN-BANDWITH PRODUCT : 1MHz

■ LARGE DC VOLTAGE GAIN : 120dB

■ LOW NOISE VOLTAGE : 28nV/√Hz

■ WIDE POWER SUPPLY RANGE / ±1.5V to

±22V

■ CLASSE AB OUTPUT STAGE. NO

CROSS-OVER DISTORTION

■ OVERLOAD PROTECTION FOR INPUTS

AND OUTPUTS

DESCRIPTION

The LM346 consists of four independent, high

gain, internally compensated, low power program-

mable amplifiers. Two external resistors (R ) al-

set

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.

DIP16

(Plastic Package)

Except for the two programming pins at the end of

the package the LM346 pin out is the same as the

LM324 and LM348.

PIN CONNECTIONS (top view)

PROGRAMMING EQUATIONS :

Total supply current = 1mA (I = 10µA)

set

Gain bandwith product = 1MHz (I = 10µA)

set

Slew rate = 0.5V/µs (I = 10µΑ)

set

O utput

Input bias current ≈30nA (I = 10µΑ)

set

Inverting Input 4

Inverting Input

= current into pin 8 and pin 9 (see schematic

set

diagram)

N on-inverting input

Vcc+ – Vcc- – 0.6V

= -----------------------------------------------------

N on-inverting input

N on-inverting Input

set

Inverting input

Inverting Input

O utput

Set

ORDER CODE

Set

Package

Part

Number

Temperature

Range

LM146

LM246

LM346

-55°C, +125°C

-40°C, +105°C

0°C, +70°C

•

Example : LM246N

N = Dual in Line Package (DIP))

April 2003

1/4

12 3 4

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