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| 型号： | LA2657M |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | 14 X 14 MM, QFP-64 |
| 文件页数： | 1/8页 |
| 文件大小： | 199K |
| 代理商： | LA2657M |
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
'sproductsor
equipment.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
20707 MS PC B8-6242 / N1506 MS PC No.8078-1/8
LA2657M
Overview
The LA2657M is a car audio signal processing IC that integrates a BBE sound processor with the functions of the SANYO
LC75421 IC. The main functions provided by the LA2657M include an input block, input gain adjustment, tone controls,
super bass, balance control, volume control, fader, and the BBE sound processor.
Functions
Input block : Four input systems [L, R] (Note that the LC75421 provides 5 systems)
Input gain control (0 to 18.75dB in 1.25dB steps)
Built-in BBE sound processor
Tone control (Bass : ±11.9dB, treble : ±11.9dB (both in 1.7dB steps))
Super bass (0 to 20dB in 2dB steps)
Master volume (0 to -79dB in 1dB steps, -∞)
Balance control
Fader (0 to -20dB in 2dB steps, -20 to -25dB in 5dB steps, -25 to -45dB in 10dB steps, -60dB, -∞)
C2B bus support (On/off control of the BBE function i snot supported)
Specifications
Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
VCC max
Pin 21
13
V
Maximum supply voltage
VDD max
Pin 47
11
V
Allowable power dissipation
Pd max
Ta
≤ 85°C *
700
mW
Operating temperature
Topr
-40 to +85
°C
Storage temperature
Tstg
-50 to +150
°C
* mounted on a specified board : 76.1mm
×114.3mm×1.6mm, glass epoxy board.
Monolithic Linear IC
Car Audio Electronic Volume and Tone Control IC
with On-Chip BBE Sound Processor
Ordering number : EN8078A
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