MSC1157 Ver la hoja de datos (PDF) - Oki Electric Industry

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MSC1157

Speaker Drive Amplifier

Oki Electric Industry 

¡ Semiconductor

MSC1157

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, Ta=25°C, VCC=2 to 6 V

Parameter

Symbol

Condition

Min.

Typ.

Max. Unit

AIN Input Resistance

Voltage Gain

Output Power

RIN

—

14

20

26

kW

AV1

AINÆSP

13.44

14

14.49

AV2

SPÆSP

–1.94

0

+1.58 dB

AV3 AINÆ(Between SP-SP) 19.46

20

20.51

POUT1

VCC=3 V, f=1 kHz

RL=8 W, THD≥10%

100

178

—

mW

POUT2

VCC=6 V, f=1 kHz

RL=32 W, THD≥10%

300

440

—

mW

Total Harmonic Distortion

THD1

VCC=3 V, RL=8 W

—

1.2

—

%

f=1 kHz, POUT=45 mW

THD2

VCC=6 V, RL=32 W

—

0.37

—

%

f=1 kHz, POUT=125 mW

Ripple Elimination Ratio

RR

f=1 kHz, C2=4.7 mF

30

43

—

dB

Output DC Voltage

(*4)

Output Offset Voltage

VO

In no

signal state

VCC=2 V

VCC=6 V

0.53

2.49

0.65

2.61

0.77

V

2.73

DVO

Between SP-SP

—

—

±30 mV

Output "H" Voltage

VOH

AIN=VCC or GND

IOUT=–100 mA

VCC–1.15 VCC–1.04

—

V

Output "L" Voltage

VOL

AIN=VCC or GND

IOUT=100 mA

—

0.17

0.3

V

STBY, SEL

IIH

VI=VCC

—

—

±0.1 mA

Input Current

IIL

VI=GND

—

—

±0.1 mA

VR Equivalent Resistance

RVR

—

18

25

32

kW

Circuit Current During Operation

ICC

VCC=6 V, RL=•

1.1

1.6

2.4

mA

Circuit Current During Standby ICCS

—

—

—

1.0

mA

*4 The typical value of the output voltage in no signal state is determined from the following

equation.

VO = (VCC – 0.67)

50 kW

50 kW + 52 kW

4/13

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