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Part Number: MSC1157

 

 

 

 

Description: The MSC1157, designed specifically to operate at a low voltage with low current consumption, is a powe...


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MSC1157 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.

MSC1157 Maximum Ratings

Parameter
Symbol
Condition
Rating
Unit
Remark
Power Supply Voltage
VCC
Ta=25°C
0.3 to +6.5
V
VCC
Input Voltage
VIN
Ta=25°C
0.3 to VCC+0.3
V
STBY
AIN, SEL
Maximum Output Current
IOMAX
Ta=25°C
(*1)
±400
mA
SP,

sp
Power Dissipation
PD
Ta=25°C
470
mW
DIP type
400
mW
SOP type
Junction Temperature
TjMAX
-
125
°C
Chip
Storage Temperature
TSTG
-
55 to +150
°C
-
*1 Avoid shorting the output pins (SP and  sp) to VCC or GND because the IC may be damaged.

MSC1157 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

MSC1157 Connection Diagram

MSC1157 Connection Diagram

MSC1157 datasheet

MSC1157
PDF/DataSheet Download

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