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MSC1157 Datasheet

  • MSC1157

  • Speaker Drive Amplifier

  • 14頁(yè)

  • OKI

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E2D0048-39-22
隆 Semiconductor
MSC1157
隆 Semiconductor
Speaker Drive Amplifier
This version: Feb. 1999
MSC1157
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
鈥?Low voltage operation
鈥?Low current dissipation
Operating current
鈥?Standby function
鈥?High output current
鈥?Differential outputs
: 2.0 to 6.0 V (Single power supply)
:
:
:
:
1.6mA without load (typ.)
Current dissipation less than 1
mA
in standby
350mA peak
A speaker can be directly connected between
differential outputs.
: Gain can be adjusted by use of an external resistor.
鈥?Adjustable gain
鈥?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
V
CC
Logic
V
CC
STBY
SEL
V
CC
52 kW
+
鈥?/div>
VR
SP
5 kW
SP
50 kW
+
A
IN
GND
鈥?/div>
20 kW
100 kW
5 kW
1/13

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