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PDF LC75397E Data sheet ( Hoja de datos )
| Número de pieza | LC75397E | |
| Descripción | Single Chip Electronic Volume and Tone Control System | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : EN6108
CMOS IC
LC75397E
Single Chip Electronic Volume and Tone Control System
Overview
The LC75397 is an electronic volume control system
providing control over volume, balance, 4-band equalizer,
bass, and input switching based on serial inputs.
Functions
• Volume control:
The chip provides 81 levels of volume attenuation: in 1-
dB step between 0 dB and –79 dB and –∞.
This circuit can control a total of 5 independent
channels.
• Equalizer:
The chip provides control in 2-dB steps over the range
between +10 dB and –10 dB. Three of the four bands
have peaking equalization; the remaining one, shelving
equalization.
• Selector:
The left and right channels each offer a choice of six
inputs. The L6 and R6 inputs can be turned on and off
independently. An external constant determines the
amplification for the input signal.
• Input gain:
The input signal can be amplified by 0 to +30 dB in 2-
dB steps.
• Bass control:
The bass can be controlled over a ±10 dB range in 2-dB
steps.
Features
• Built-in buffer amplifiers reduce the number of external
parts required.
• Silicon gate CMOS process reduces the noise of built-in
switch.
• Built-in analog ground reference voltage generator
circuit
• All functions are controlled by serial input data. This IC
supports the CCB standard.
Package Dimensions
unit: mm
3159-QFP64E
1.0
48
49
[LC75397]
17.2
14.0 1.6
0.8 0.35 1.0
33
32
0.15
64
1
17
16
0.1
2.7
15.6 0.8
SANYO: QFP64E (QIP64E)
• 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
40799RM (OT) No. 6108-1/26
1 page  
LC75397E
Control System Timing and Data Formats
To control the LC75397E, specified sequences are required to be input through the pins CE, CL, and DI. Each sequence
consists of 48 bits: an 8-bit address followed by 56 bits of data.
1us ≤ T DEST
1. Address Code (B0 to A3)
This product uses an 8-bit address code, and supports the same specifications as other Sanyo CCB serial bus
products.
Address code (LSB)
2. Control Code Allocations
Input switching control
(L1, L2, L3, L4, L5,
R1, R2, R3, R4, R5)
D0 D1 D2
Operation
0
0
0 L1 (R1)
ON
1
0
0 L2 (R2)
ON
0
1
0 L3 (R3)
ON
1
1
0 L4 (R4)
ON
0
0
1 L5 (R5)
OFF
1 0 1 Switch all OFF
0 1 1 Switch all OFF
1 1 1 Switch all OFF
Input switching control
(L6, R6)
D3 Operation
1 L6 (R6)
OFF
0 L6 (R6)
ON
No. 6108-5/26
5 Page 
Continued from preceding page.
Pin No.
Pin
LC75397E
Function
• A capacitor with a value of a few tens of µF must be inserted
21
Vref
between Vref and AVSS (VSS) to reduce power supply ripple
in the 0.5 × VDD voltage generator block used for analog
ground.
56 VSS Ground
26 VDD Power supply
• Chip enable
25 CE When this pin goes from high to low, data is written to an
internal latch and the analog switches operate. Data transfers
are enables when this pin is at the high level.
24 DI
• Serial data and clock inputs for chip control
23 CL
• Electronic volume control test pin.
22 TEST
This pin must be held at the VSS potential.
16
17
20
• Unused pins. These pins must either be left open or
27 NC connected to VSS.
28
29
57
Equivalent circuit
No. 6108-11/26
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet LC75397E.PDF ] | |
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