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MM1077 PDF даташит

Спецификация MM1077 изготовлена ​​​​«Mitsumi Electronics» и имеет функцию, называемую «Compander IC».

Детали детали

Номер произв MM1077
Описание Compander IC
Производители Mitsumi Electronics
логотип Mitsumi Electronics логотип 

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MM1077 Даташит, Описание, Даташиты
www.DataSheet4U.com
MITSUMI
Compander IC
Monolithic IC MM1077
Compander IC MM1077
Outline
This IC was developed for use in cordless telephone equipment. It is a compander IC incorporating
compressor/expander circuits for a significant noise reduction effect without complicated external circuitry.
On the transmission side, the dynamic range of audio signals is compressed by the compressor circuit; on the
receiving side, the expander expands the signals. As a result the dynamic range over the transmission
channel is reduced logarithmically by one-half.
Features
1. Can be driven at low voltages (down to 2.0V)
2. Internal mute function
3. Internal limiter (IDC) function
4. Compressor input can be switched between MIC and LINE
5. Internal standby function
6. Data input, output pins
7. Independent mute circuit
Package
SSOP-24A (MM1077XF)
Applications
1. Cordless telephones
2. Various mobile communication devices
Pin Assignment
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
SSOP-24A
1
C.Vref
9
DATA. IN
17
E.RECT
2
C.IN1
10 C.CONT 18
E.OUT
3
C.IN2
11
N.C
19 E.RIN
4
C.IN-
12
GND
20 A.OUT
5
C.RECT
13 STANDBY SW 21
A.IN-
6
C.RIN
14 C.IN SW 22
A.IN+
7
C.FB
15 C.MUTE SW 23
E.Vref
8
C.NF
16 E.MUTE SW 24
Vcc









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MM1077 Даташит, Описание, Даташиты
MITSUMI
Block Diagram
Compander IC MM1077
Absolute Maximum Ratings (Ta=25°C)
Item
Storage temperature
Operating temperature
Power supply voltage
Allowable loss
Operating voltage
Symbol
TSTG
TOPR
VCC max.
Pd
Ratings
-40~+125
-10~+70
-0.3~+8
650
+2.0~+7
Units
°C
°C
V
mW
V









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MM1077 Даташит, Описание, Даташиты
MITSUMI
Compander IC MM1077
Electrical Characteristics (Except where noted otherwise, Ta=25°C, VCC=3V, fin=1kHz)
Item
Symbol Measurement conditions Min. Typ. Max. Units
Consumption current
ICC
No signal
4.0 6.0 mA
Standby current consumption Iscc
0 10 µA
Threshold voltage
Vth
0.40 0.65 0.80 V
Input reference level
VINc Voc=100mVrms, VIN=0dB 8.0 13.5 18.0 mVrms
*Gain error
Gc1
VIN=-20dB
-0.5 0 0.5 dB
Gc2
VIN=-40dB
-1.0 0 1.0 dB
Distortion
THDc
VIN=0dB
0.3 1.0 %
Compressor
unit
Output noise voltage
Mute attenuation
Limit voltage
Vnc No signal (CCITT)
2.5 5.0 mVrms
Attc VIN=0dB, C.MUTE SW : ON 40 50
dB
Vlimc
THD=10%
700 800 900 mVp-p
DATA pin voltage gain
GDATA C. MUTE SW : ON, VIN=0dB -0.5 0 0.5 dB
DATA pin maximum output VD max. C.MUTE SW : ON, THD=10% 800 900
mVrms
Crosstalk
CTc
EXPVIN=0dB
28 33
dB
Ripple rejection ratio
RRc VR=100mVrms, fR=1kHz 18 23
dB
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=-30dB
-1.0 0
-1.5 0
1.0 dB
1.5 dB
Distortion
THDe
VIN=0dB
0.15 1.0 %
Expander Maximum output voltage Ve max.
THD=10%
600 800
mVrms
unit
Output noise voltage
Vne No signal (CCITT)
20 40 µVrms
Mute attenuation
Atte VIN=0dB, C. 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
60 75
dB
Ripple rejection ratio
RRe VR=100mVrms, fR=1kHz 50 60
dB
*Gain error difference = (VOUT (dBv)+20dB) -VIN (dB) 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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