NJM2172 datasheet(1/16 Pages) NJRC

Part #	NJM2172

Description	OPERATIONAL AMPLIFIER WITH EVR

PDF	16 Pages

Scroll/Zoom	100%

Manufacturer	NJRC [New Japan Radio]

Direct Link	http://www.jrc.co.jp/eng/index.html

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NJM2172

- 1 -

OPERATIONAL AMPLIFIER WITH EVR

s

s GENERAL DESCRIPTION

s

s PACKAGE OUTLINE

The NJM2172 is single supply, dual OP-AMP with

electric variable resistor (EVR), which contains buffer

amplifier, OP-AMP, reference voltage circuit, EVR and EVR

control circuit.

The reference is fixed around 1/2 V

+ level internally, and

only required few external parts.

The A and B EVR is control separately, and amp drive

up to 100

Ω(typ.) load. The NJM2172 is suitable for

camcorder, CD, MD, and other audio signal process

system.

s

s FEATURES

q

Low Power Supply Voltage

V+ = 2.7 to 5.5V

q

Low Operating Current

Icc = 5.0mA typ.

q

A/Bch EVR adjust is separately

q

EVR range

-3.0 to -95ｄB

q

Drivability

100

Ω typ.

q

Bipolar Technology

q

Package Outline

SSOP14

s

s BLOCK DIAGRAM

s PIN CONFIGURATION

1: OP+INA

2: OP-INA

3: OPOUTA

4: EVROUTA

5: VCNTA

6: VCNTB

7: V

+

8: GND

9: Vref

10:REFIN

11:EVROUTB

12:OPOUTB

13:OP-INB

14:OP+INB

NJM2172V

1

2

3

4

5

6

7

Ach

VCA

Ach EVR Control

Bch EVR Control

Bch

VCA

Bch EVR

Ach EVR

14

13

12

11

10

9

8

Ach OPAMP

Bch OPAMP

Ach EVR AMP

Bch EVR AMP VREF AMP

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