3544L_OLD データシートの表示（PDF） - Unisonic Technologies

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3544L_OLD

HEADPHONE AMPLIFIER FOR CD-ROMS

Unisonic Technologies 

UTC 3544 LINEAR INTEGRATED CIRCUIT

MEASUREMENT CONDITIONS

SIGNAL

SW1

SW3

SW TABLE

SW5 SW7

IQ

1

1

1

1

VTM

GVC

1

2

△Gvc

2

1

THD

1

2

2

1

Po1

1

2

2

1

Po2

2

2

2

2

VNO

1

1

1

1

CS

1

1

1

2

2

1

1

1

ATT

1

2

2

1

RR

1

1

1

1

SW8A SW8B

2

OFF

2

ON

2

ON

2

ON

2

ON

2

ON

2

ON

2

ON

2

ON

1

ON

MONITOR

IQ

CONDITIONS

V1AC,V2AC

V1AC,V2AC

V1AC,V2AC

V1AC,V2AC

V1AC,V2AC

V1AC,V2AC

V1AC,V2AC

V1AC,V2AC

V1AC,V2AC

f=1kHz,VIN1/2=-6dBV,

VTM=1.6V

GVC1 – GVC2

fin=1kHz,VIN1/2= -6dBV,

VTM=1.6V

fin=1kHz,VIN1/2= -6dBV,

VTM=1.6V

fin=1kHz,VIN1/2= -6dBV,

VTM=1.6V

fin=1kHz,VIN2= -6dBV,

VTM=1.6V

fin=1kHz,VIN1= -6dBV,

VTM=1.6V

fin=1kHz,VIN1/2= -6dBV,

VTM=0.3VB

VRR= -20dBV,

fRR=100Hz

CIRCUIT OPERATION

Rising edge timing

Rise period A

Play period

A

Rise period

B

C

Vcc

OUT

VMUTE

A: MUTE period(use with MUTE=Low to prevent the popping noise when the power is turned on and off).

B: MUTE release time(used to prevent the popping noise at the release of MUTE with the external C2 and R2

and therefore possesses a time constant,so be careful of the timing).

C: MUTE start time(also possesses a time constant like the MUTE release time).

UTC UNISONIC TECHNOLOGIES CO. LTD 5

QW-R107-040,A

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