MSC1157 查看數據表（PDF） - Oki Electric Industry

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MSC1157

Speaker Drive Amplifier

Oki Electric Industry 

E2D0048-39-22

¡ ¡ SemicondSucetormiconductor

MSC1157

Speaker Drive Amplifier

This version: FMebS. C19191957

Previous version: May. 1997

GENERAL DESCRIPTION

The MSC1157, designed specifically to operate at a low voltage with low current consumption,

is a power amplifier developed for driving a speaker for a voice IC.

The voltage gains can be adjusted over a range of up to ten. The differential output can directly

drive a speaker without any output coupling capacitors. The MSC 1157, because of its ability to

stand by, is ideally suitable for portable equipment applications powered by a battery.

FEATURES

• Low voltage operation

: 2.0 to 6.0 V (Single power supply)

• Low current dissipation

Operating current

: 1.6mA without load (typ.)

• Standby function

: Current dissipation less than 1 mA in standby

• High output current

: 350mA peak

• Differential outputs

: A speaker can be directly connected between

differential outputs.

• Adjustable gain

: Gain can be adjusted by use of an external resistor.

• Package options:

8-pin plastic DIP (DIP8-P-300-2.54) (Product name : MSC1157RS)

8-pin plastic SOP (SOP8-P-250-1.27-K) (Product name : MSC1157MS-K)

Chip

BLOCK DIAGRAM

STBY

SEL

VCC

Logic

VCC

VCC

VR

+

AIN

–

20 kW

GND

100 kW

+

SP

–

5 kW

SP

1/13

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