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PDF LC75421 Data sheet ( Hoja de datos )

Número de pieza LC75421
Descripción Electronic Volume Controller for Cars
Fabricantes Sanyo Semicon Device 
Logotipo Sanyo Semicon Device Logotipo



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No Preview Available ! LC75421 Hoja de datos, Descripción, Manual

Ordering number : ENN6866A
CMOS IC
LC75421M
Electronic Volume Controller for Cars
Overview
The LC75421M is an electronic volume controller that
enables control of volume, balance, fader, bass/treble +
super bass, input switching, and input and output level
control functions using only a small number of external
components.
Functions
• Volume: 0 dB to –79 dB in 1-dB steps, and –(81 positions)
Balance function with separate L/R control
• Fader: rear output or front output can be attenuated
across 16 positions (in 2-dB steps from 0 dB to -
20 dB, 5-dB steps from –20 dB to –25 dB, 10-dB
steps from –25 dB to –45 dB, and –60 dB, –)
• Bass/treble: A tone control circuit can be configured
using an external RC, with 15-position
control from 0 dB to ±11.9 dB in 1.7-dB
steps possible for both bass and treble
• Input gain: 0 dB to +18.75 dB (1.25-dB steps)
amplification is possible for the input signal.
• Output gain: Fader output can be selected among 0 dB,
+6.5 dB, and +8.5 dB.
• Input switching: Five input signals can be selected for
Left and for Right
• Super bass: Step control with 11 positions is possible,
with peaking characteristics (type T)
Features
• On-chip buffer amplifier cuts down number of external
components
• Low switching noise generated by on-chip switch due to
use of silicon gate CMOS process
• On-chip reference voltage circuit for analog ground
• Controls performed with serial input (CCB)
Package Dimensions
unit: mm
3263-MFP36SDJ (375 mil)
[LC75421M]
15.2
36 19
1 0.8
(0.8)
0.3 18
0.25
SANYO: MFP36SDJ (375 mil)
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
90503TN (OT) / 20901RM (OT) No. 6866-1/24

1 page




LC75421 pdf
Bass Band Control Block
Parameter
Control range
Step resolution
Internal feedback resistance
Symbol
Gbass
Estep
Rfeed
Treble Band Control Block
Parameter
Control range
Step resolution
Internal feedback resistance
Symbol
Gtre
Estep
Rfeed
Super Bass Block (Type T)
Parameter
Control range
Step resolution
Internal feedback resistance
Symbol
Crange
Estep
Rfeed
LC75421M
Pin Name
Conditions
MAX. Boost/Cut
Pin Name
Conditions
MAX. Boost/Cut
Pin Name
Conditions
MAX. Boost
General
Parameter
Total harmonic distortion
Crosstalk
Maximum attenuated output
Output noise voltage
Input high-level current
Input low-level current
Symbol
Conditions
THD
CT
Vomin
VN-1
VN-2
IIH
IIL
VIN = 1 Vrms, f = 1 kHz, flat overall
VIN = 1 Vrms, f = 1 kHz, flat overall, Rg = 1 k
VIN = 1 Vrms, f = 1 kHz, main volume –
Fflat overall, (IHF-A), RG = 1 k
Flat overall, (DIN-AUDIO), RG = 1 k
CL, DI, CE VIN = 8 V
CL, DI, CE VIN = 0 V
min
±10
1
Ratings
typ
±11.9
1.7
45.084
max
±14
3
Unit
dB
dB
k
min
±10
1
Ratings
typ
±11.9
1.7
56.084
max
±14
3
Unit
dB
dB
k
Ratings
Unit
min typ max
+20 dB
+2.0
dB
66.6
k
Ratings
min typ
0.003
80.5
–80
8
10
–10
max
0.01
10
Unit
%
dB
dB
µV
µV
µA
µA
No. 6866-5/24

5 Page





LC75421 arduino
Equivalent Circuit Input Block Diagram
LC75421M
L1
50 k
L2
50 k
L3
50 k
L4
50 k
L5
50 k
0 dB
+1.25 dB
+2.50 dB
+3.75 dB
+5.00 dB
+6.25 dB
+7.50 dB
+8.75 dB
+10.00 dB
+11.25 dB
+12.50 dB
+13.75 dB
+15.00 dB
+16.25 dB
+17.50 dB
+18.75 dB
LSEL0
6.702 k
5.804 k
5.026 k
TOTAL = 50 k
4.352 k
3.769 k
3.264 k
2.826 k
2.447 k
2.119 k
1.835 k
1.589 k
1.376 k
1.192 k
1.032 k
0.894 k
5.774 k
LVref
Same for right channel
Unit: (Resistance: )
No. 6866-11/24

11 Page







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