Sanyo EP93F manual LA2901VV

Car Audio Electronic Volume Control IC with BBE Surround Processor

Overview

Four Channel HighHigh--OutputOutputLineLine AmplifierAmplifier for Car Audio

LA2901VV

Overview

The LA2657M is an audio signal processor for car audio that integrates the functions of the LC75421 IC and a BBE surround processing on a single chip. The LA2657M's main functions include input functions, input gain adjustment, tone controls, super bass function, balance control, volume fader control, and the BBE surround processor.

R

BBE and BBE symbol are registered trademarks of BBE Sound, Inc.

Functions

■Input functions: Four input systems (L+R) (The LC75421 provides five input systems.)

■Input gain control (0 to 18.75 dB in 1.25 dB steps)

■BBE processor

■Tone controls (Bass: ±11.9 dB, treble: ±11.9 dB. Both in 1.7 dB steps)

■Super bass (0 to 20 dB in 2 dB steps)

■Master volume control (0 dB to -79 dB in 1 dB steps, -∞)

■Bus control

■Fader (0 to -20 dB in 2 dB steps, -20 to -25 dB in 5 dB steps, -25 to -45 dB in 10 dB steps, -60 dB, -∞)

■CCB bus (On/off control of the BEE function is not provided over the CCB bus.)

■Package: QIP64E (14 14 mm)

❋:This product is subject to change without notice for improvement. When considering the use of this product, first refer to the latest SANYO "Semiconductor News" publication related to this device and finally refer to the latest specifications for the device.

Block Diagram

The LA2901V is a 4-channel high-output line amplifier designed for car audio applications.

Since the output voltage is increased significantly over conventional line amplifiers, the LA2901V achieves a high signal-to-noise ratio and high audio quality in the connection from the main unit to the external amplifier and can improve power amplifier performance.

The LA2901V also provides significant space savings over earlier solution but reducing by one half the number of capacitors previously required to boost the signal system supply voltage and by adopting the SSOP miniature package.

Functions and Features

■High output level (5.3 V rms)

■Low output noise voltage (12 ∝V)

■Low total harmonic distortion (0.004 %)

■High ripple rejection ratio (70 dB)

■Minimal number of external components required

■Superb audio quality

■Package: SSOP24 (275 mil)

Block Diagram