MITSUMI
Compander IC MM1100
MITSUMI
Compander IC
Monolithic IC MM1100
Outline
This IC was developed for use in mobile communication 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 2.4V)
2. Compression and expansion circuits enable suppression of unwanted radio waves
3. Consumption current 2.8mA typ.
Package
SOP-14B (MM1100XF)
Applications
Pin Assignment
1. Cordless telephones
2. Various mobile communication devices
SOP-14B
13 62457
14 11 913 12 10 8
1 E.GIN 8 C.OUT
2 E.RIN 9 C.GIN
3 E.RECT 10 C.RIN
4 E.OUT 11 C.RECT
5 E.REF 12 C.IN
6 C.REF 13 C.NF
7 GND 14 V
CC
MITSUMI
Compander IC MM1100
MITSUMI
Block Diagram
Absolute Maximum Ratings
(Ta=25°C)
Item Symbol Ratings Units
Storage temperature T
STG
-
40~+125
°
C
Operating temperature T
OPR
-
10~+70
°
C
Power supply voltage V
CC max.
-
0.3~+8 V
Allowable loss Pd 350 mW
Operating voltage V
OP +2.4~+7 V
MITSUMI
Compander IC MM1100
MITSUMI
Electrical Characteristics
(Except where noted otherwise, Ta=25°C, Vcc=3V, fIN=1kHz, VR=0mVrms)
Item Symbol Measurement conditions Min. Typ. Max. Units
Consumption current I
CC No signal 1.8 2.8 3.8 mA
Compressor reference voltage Vrefc 6PIN DC voltage 1.3 1.4 1.5 V
Expander reference voltage Vrefc 5PIN DC voltage 1.3 1.4 1.5 V
Input reference level Vinc V
OC=300mVrms, VIN=0dB 100 120 145
mV
rms
Gain error difference
*
Gec1 VIN=-20dB
-
0.5 0 0.5 dB
Gec2 V
IN=
-
40dB
-
1.0 0 1.0 dB
Distortion THDC V
IN=0dB 0.3 1.0 %
Output noise voltage Vnc No signal (CCITT) 2.5 5.0
mV
rms
Limit voltage Vlimc THD=10% 1.20 1.40 1.60 VP
-
P
Crosstalk CTC EXPVIN=0dB
-
45-35 dB
Ripple rejection ratio RR
C VR=100mVrms, fR=1kHz
-
20-12 dB
Input reference level Vine Voe=300mVrms, V
IN=0dB 310 375 450
mV
rms
Gee1 VIN=-10dB
-
0.5 0 0.5 dB
Gain error difference
*
Gee2 VIN=-20dB
-
1.0 0 1.0 dB
Gee3 V
IN=
-
30dB
-
1.5 0 1.5 dB
Distortion THDe V
IN=0dB 0.15 1.0 %
Maximum output voltage Ve max. THD=10% 700 900
mVrms
Output noise voltage Vne No signal (CCITT) 20 40
uV
rms
Crosstalk CTe COMPVIN=0dB
-
75-60 dB
Ripple rejection ratio RRe V
R=100mVrms, fR=1kHz
-
60-50 dB
Compressor
unit
Expander
unit
*
Gain error difference = (VOUT (dBv) + 10.46dB) -VIN (dB) G (dB)
G : COMP=0.5, EXP=2
MITSUMI
Compander IC MM1100
Pin no. Function Pin voltage (typ.) Internal equivalent circuit
MITSUMI
Pin Description
1 Input pin E 1.4V
9 Feedback signal input pin 1.4V
2 Rectifier input pin E 1.4V
10 Rectifier input pin C 1.4V
3 Rectifier pin E 0.7V
11 Rectifier pin C 0.7V
5 Reference voltage pin E 1.4V
6 Reference voltage pin C 1.4V
4 Output pin E 1.4V
The rectifier is a full-wave
rectifier. The response
characteristics (attack time,
release time) are determined
by the time constant of the
external capacitor C1 and the
internal resistance (10kΩ)
MITSUMI
Compander IC MM1100
MITSUMI
7 GND pin 0V
8 Output pin C 1.4V
12 Input pin E 1.4V
13 AC signal cut pin 1.4V
14 V
CC pin 3.0V
The compressor amp must
have a DC gain of unity and AC
gain of infinity. In order to
satisfy this requirement, a
capacitor C2 is connected to
pin 13 to remove AC
components. The cutoff
frequency is determined by the
product with the internal
resistance (10kΩ)
Loading...