|
|
PDF LC7538JM Data sheet ( Hoja de datos )
| Número de pieza | LC7538JM | |
| Descripción | CMOS IC | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LC7538JM (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
Ordering number : EN4799B
CMOS IC
LC7538JM
Electronic Volume Control System
for Car Audio
Overview
The LC7538JM is a fully equipped electronic volume IC
which permits significant reductions in externally
connected components while providing ample volume,
balance, loudness, fader, bass and treble control functions.
• On-chip op amplifier for caching applications reduces
external components.
• Reduced switching noise with silicon gate CMOS
processor.
• All controls performed using serial data input (CCB).
Features
• Volume
: 81 positions ranging from 0 dB to -79
dB (in 1 dB increments) plus -∞.
Separate left and right control provides
excellent balance function.
• Loudness
: Loudness operation provided by
externally attached CR to activate tap
at the -20 dB position of the volume
ladder resistor.
• Fader
: Fader function traversing 16 positions
with rear or front attenuated output
only (these 16 positions consist of 2
dB step intervals ranging from 0 dB to
-20 dB, 5 dB step intervals ranging
from -20 dB to -45 dB, plus the end
settings of -60 dB and -∞).
• Bass and Treble: Using externally attached C
(capacitor), the LC7538JM provides
bass-treble mutual 15-position control
and formats a NF-form tone control
circuit (LUX form).
Package Dimensions
unit : mm
3204-MFP36S
[LC7538JM]
SANYO: MFP36S
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Maximum supply voltage
Maximum input voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VDD max
VIN max1
VIN max2
Pd max
Topr
Tstg
Conditions
VDD
CL, DI, CE
LTIN, RTIN, L5dBIN, R5dBIN, L1dBIN, R1dBIN,
LFIN, RFIN
Ta ≤ 85°C
Ratings
11
VSS – 0.3 to VDD + 0.3
VSS – 0.3 to VDD + 0.3
210
–40 to +85
–50 to +125
Unit
V
V
V
mW
°C
°C
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 Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
93098 HA (OT) / 83194 TH (OT) B8-0913 No. 4799-1/14
1 page  
Pin Descriptions
Pin name
LROUT
LFOUT
RROUT
RFOUT
Pin No.
1
2
36
35
LFIN
3
RFIN
34
LC7538JM
Description
• These pins function as output pins for the fader. Output reduction for rear and
front is performed separately for each. Attenuation capacity is unified for
both left and right. Step positioning is designed using an open circuit so that
reception is performed using high impedance.
• When utilizing the fader function, these pins function as input pins.
• Low impedance driven.
LVref
RVref
• These pins are common pins for fader volume, tone and main volume.
4 The pattern impedance connected here should be lowered as much as
possible.
• LVref and RVref are not connected to VSS.
• Connections for LVref and RVref to VSS should be established externally to
match all specifications. Notably, attention should be paid to capacity since
capacitors are subject to residual resistance during volume output reduction
when installed between LVref (RVref) and VSS as is the case with single
power sources.
33 • Normally, high voltage applied from VDD.
L1dBOUT
R1dBOUT
L1dBIN
R1dBIN
L5dBOUT
R5dBOUT
LCT1
LCT2
RCT1
RCT2
L5dBIN
R5dBIN
LTOUT
RTOUT
5
• These pins are output pins for the 1 dB step attenuator located in the section
main volume.
32
6 • These pins are input pins for the 1 dB step attenuator located in the section
main volume.
• Low impedance driven.
31
7
• These pins are output pins for the 5 dB step attenuator located in the section
main volume.
30
9
8 • These pins are for loudness control. Connect a high-band compensation
capacitor between CT1 to 5dB IN and a low-band compensation capacitor
28 between CT2 to Vref.
29
10 • These pins are input pins for the 5 dB step attenuator located in the section
main volume.
• Low impedance driven.
27
11
• These pins are output pins for tone control.
26
Remarks
Continued on next page.
No. 4799-5/14
5 Page 
LC7538JM
No. 4799-11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LC7538JM.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LC7538JM | CMOS IC | Sanyo Semicon Device |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |