MM1102 查看數據表（PDF） - Mitsumi

零件编号

产品描述 (功能)

比赛名单

MM1102

Compander IC

Mitsumi 

MITSUMI

Compander IC MM1102

Electrical Characteristics (Except where noted otherwise,Ta=25°C, VCC=3V, fin=1kHz)

Item

Symbol Measurement conditions Min. Typ. Max. Units

Input reference level

Vine Voe=100mVrms, VIN=0dB 25 35 50 mVrms

Ge1

VIN=-10dB

-0.5 0 0.5 dB

* Gain error difference

Ge2

Ge3

VIN=-20dB

VIN=-25dB

-1.0 0

-1.5 0

1.0 dB

1.5 dB

Distortion

THDe

VIN=0dB

0.15 1.0 %

Expander

unit

Maximum output voltage

Output noise voltage

Ve max.

Vne

THD=10%

No signal (CCITT)

550 700

mVrms

20 40 µVrms

Mute attenuation

Atte

VIN=0dB, Mute SW : on 60 70

dB

Input amp voltage gain

GI

VIN=0dB

14.6 15.6 16.6 dB

Input amp maximum output Veo max.

THD=10%

0.90 1.10

Vrms

Crosstalk

CTe

COMPVIN=0dB

-75 -60 dB

Ripple rejection ratio

RRe VR=100mVrms, fR=1kHz

-60 -50 dB

Buffer amp gain

Gba

Voba=100mVrms

-1 0 +1 dB

Buffer maximum output voltage Voba max.

THD=10%

0.35 0.50

Vrms

COMP reference voltage C.Vref

1.5

V

EXP reference voltage

E.Vref

1.3

V

*Gain error difference = (VOUT+20dB) -VIN G (dB)

G : COMP=0.5, EXP=2

Function Description

1. Compressor unit

The compressor unit consists of the mike amp, compressor, limiter circuit, data amp, and mute circuit.

The mike amp gain can be adjusted through an external resistance, and so the mike amp can be

connected directly to a microphone. An internal limiter circuit to prevent overmodulation as well as a data

amp (0dB amp) enabling transmission of data signals without compression are also provided. Switching

between audio signals and data signals is possible using the compressor mute switch.

2. Expander unit

The expander unit consists of an input amp, expander, and mute circuit.

The input amp makes available all input and output signals at pins, and so can be used freely as an

amplifier, filter amp, or data amp. When used as a data amp, the expander mute switch can be set so that

the expander output is nearly silent.

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