參數(shù)資料
型號： MM1077
廠商： MITSUMI ELECTRIC
英文描述： Compander IC
中文描述： 擴展器集成電路
文件頁數(shù)： 3/7頁
文件大?。?/td> 170K
代理商： MM1077
MITSUMI
Compander IC MM1077
Electrical Characteristics
(Except where noted otherwise, Ta=25
°
C, V
CC
=3V, fin=1kHz)
Function Description
Item
Symbol
I
CC
Iscc
Vth
V
IN
c
Gc1
Gc2
THDc
Vnc
Attc
Vlimc
G
DATA
VD max.
C.MUTE SW : ON, THD=10%
CTc
EXPV
IN
=0dB
RRc
V
R
=100mVrms, f
R
=1kHz
V
IN
e
Voe=100mVrms, V
IN
=0dB
Ge1
V
IN
=
-
10dB
Ge2
V
IN
=
-
20dB
Ge3
V
IN
=
-
30dB
THDe
Ve max.
Vne
No signal (CCITT)
Atte
V
IN
=0dB, C. MUTE SW : ON
GI
Veo max.
THD=10%
CTe
COMPV
IN
=0dB
RRe
V
R
=100mVrms, f
R
=1kHz
Measurement conditions
No signal
Min. Typ. Max. Units
4.0
0
0.40
0.65
8.0
13.5
-
0.5
0
-
1.0
0
0.3
2.5
40
50
700
800
0
800
900
28
33
18
23
25
35
-
0.5
0
-
1.0
0
-
1.5
0
0.15
600
800
20
60
70
14.6
15.6
0.90
1.10
60
75
50
60
Consumption current
6.0
10
0.80
18.0
0.5
1.0
1.0
5.0
mA
μA
V
Standby current consumption
Threshold voltage
Input reference level
Voc=100mVrms, V
IN
=0dB
V
IN
=
-
20dB
V
IN
=
-
40dB
V
IN
=0dB
No signal (CCITT)
V
IN
=0dB, C.MUTE SW : ON
THD=10%
C. MUTE SW : ON, V
IN
=0dB
-
0.5
mVrms
dB
dB
%
Gain error
*
Distortion
Output noise voltage
mVrms
dB
mV
p
-
p
dB
Mute attenuation
Limit voltage
900
0.5
DATA pin voltage gain
DATA pin maximum output
mVrms
dB
dB
Crosstalk
Ripple rejection ratio
Input reference level
50
0.5
1.0
1.5
1.0
mVrms
dB
dB
dB
%
Gain error difference
*
Distortion
V
IN
=0dB
THD=10%
Maximum output voltage
mVrms
μVrms
dB
dB
Vrms
dB
dB
Output noise voltage
40
Mute attenuation
Input amp voltage gain
V
IN
=0dB
16.6
Input amp maximum output
Crosstalk
Ripple rejection ratio
Compressor
unit
Expander
unit
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.
*
Gain error difference = (V
OUT
(dBv)+20dB)
-
V
IN
(dB) G (dB)
G : COMP=0.5, EXP=2
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