MITSMI MM1124CF, MM1124BF, MM1124AD, MM1124BD, MM1124AF Datasheet
MITSUMI
Bass Amplifier MM1124
Bass Amplifier
Monolithic IC MM1124
Outline
This IC was developed to boost bass on TV and free-standing VCR decks, etc.
The recent trend toward large-screen TV and movie software has increased the demand for powerful bass
and wider sound, so that the bass boost function has become part of TV and VCR functions.
This IC was designed especially for bass, and easily reproduces a powerful sound.
Features
1. Dynamic bass boost
Boost can be adjusted higher for lower sound, and smaller for bigger sound.
2. Boost switching pin
Boost amount can be switched for music and video software, giving a change to the set
3. High range boost
By boosting the high range as well, a more realistic sound is reproduced
4. Boost attack circuit
Gives quick response and follows sudden volume changes
Series Table
Model name
Boost Boost start
FULL 1/2 input level
MM1124A 19dB 14dB +3dBm
MM1124B 12dB 8dB +3dBm
MM1124C 8dB 4dB
-
14dBm
Note 1 : Boost amounts for are input level of -37.8dBm
Note 2 : The above are reference values, and may vary depending on the
specifications.
Absolute Maximum Ratings
(Ta=25°C)
Item Symbol Ratings Units
Storage temperature T
STG
-
40~+125
°
C
Operating temperature T
OPR
-
20~+70
°
C
Power supply voltage V
CC max.
-
0.3~+15 V
Operating voltage V
CC +5~+12 V
Allowable loss Pd
350 (SOP-16B)
1200 (DIP-16B)
mW
Package
SOP-16B (MM1124AF, MM1124BF, MM1124CF)
DIP-16B (MM1124AD, MM1124BD)
MITSUMI
Bass Amplifier MM1124
Electrical Characteristics
(Ta=25°C)
Item Rank
Measurement conditions
Min. Typ. Max. Units
SW f (Hz) V
IN (dBm)
Consumption current FULL 1k
-
7.8 6.6 9.0 mA
Voltage gain Through 1k
-
7.8
-
10+1dB
A FULL 100
-
37.8 17 19 21 dB
Boost 1 (Bst1) B FULL 100
-
37.8 10 12 14 dB
C FULL 100
-
37.8 6 8 10 dB
A 1/2 100
-
37.8
Bst1-6 Bst1-5 Bst1-4
dB
Boost 2 B 1/2 100
-
37.8
Bst1-5 Bst1-4 Bst1-3
dB
C 1/2 100
-
37.8
Bst1-5 Bst1-4 Bst1-3
dB
FULL 1k
-
7.8 0.1 0.3 %
Total harmonic distortion ratio
1/2 1k
-
7.8 0.1 0.3 %
Through 1k
-
7.8 0.03 0.1 %
Crosstalk FULL 1k
-
7.8
-
50-44 dB
Maximum output voltage FULL THD=10% 1.8 2.4 Vrms
Output noise voltage
FULL V
IN=0V, 30kHzLPF 250 500
µVrms
Through Rg=10kΩ 25 50
µVrms
A
FULL
-
32-26 dB
Through
-
48-42 dB
Ripple rejection rate B
FULL
-
36-30 dB
Through
-
48-42 dB
C
FULL
-
42-34 dB
Through
-
56-48 dB
FULL 1k
-
7.8 0 0.3 V
SW pin voltage range 1/2 1k
-
7.8 1.2 1.6 V
Through 1k
-
7.8 2.5 9 V
Superimpose VR=0dB
(100Hz, 100mVrms) on
V
CC and measure output
pin
Note : No rank indication means common rank
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