LC75342 Sanyo Semiconductor Corporation, LC75342 Datasheet

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LC75342

Manufacturer Part Number
LC75342
Description
Manufacturer
Sanyo Semiconductor Corporation
Datasheet
Ordering number : ENN*6271
Preliminary
Overview
The LC75342 and LC75342M are electronic volume and
tone control systems that provide volume, balance, a 2-
band equalizer, and input switching functions that can be
controlled from serially transferred data.
Functions
• Volume: 0 dB to –79 dB (in 1-dB steps) and – , for a
• Bass boost: Up to +20 dB in 2-dB steps. Peaking
• Treble: ±10 dB in 2-dB steps. Shelving characteristics.
• Selector: One of four sets of left/right inputs can be
• Input gain: The input signal can be boosted by from
Features
• On-chip buffer amplifiers minimize the number of
• Fabricated in a silicon gate CMOS process to minimize
• Built-in analog ground reference voltage generation
• All controls can be set from serially transferred data.
total of 81 settings.
The volume can be controlled independently in the left
and right channels to implement a balance function.
characteristics.
selected.
0 dB to +30 dB in 2-dB steps.
external components.
switching noise from internal switches.
circuit.
Supports the CCB standard.
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is a SANYO’s original bus format and all the
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.
bus addresses are controlled by SANYO.
SANYO Electric Co.,Ltd. Semiconductor Company
Single-Chip Volume and Tone Control System
Package Dimensions
unit: mm
3196-DIP30SD
unit: mm
3216-MFP30S
1.14
30
1
30
1
1.78
0.35
0.48
15.3
27.2
LC75342, 75342M
[LC75342M]
[LC75342]
0.95
1.0
15
16
D2499RM (OT) No. 6271-1/20
0.65
16
15
SANYO: DIP30SD
SANYO: MFP30S
0.15
CMOS IC

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LC75342 Summary of contents

Page 1

... Ordering number : ENN*6271 Preliminary Overview The LC75342 and LC75342M are electronic volume and tone control systems that provide volume, balance band equalizer, and input switching functions that can be controlled from serially transferred data. Functions • Volume –79 dB (in 1-dB steps) and – , for a total of 81 settings ...

Page 2

... Parameter Input resistance Bass Band Equalizer Control Block Parameter Control range Step resolution Internal feedback resistance Treble Band Equalizer Control Block Parameter Control range Step resolution Internal feedback resistance LC75342, 75342M = Symbol Pin Conditions V max CE, DI, CL L4, ...

Page 3

... I CL, DI, CE Pin Assignment LC75342, 75342M Conditions = 1 Vrms kHz, all flat overall Vrms kHz all flat overall IN – + LC75342, 75342M Ratings Unit min typ max 0. 9.3 µV – µA – ...

Page 4

... Equivalent Circuit LC75342, 75342M No. 6271-4/20 ...

Page 5

... Control System Timing and Data Format Applications control the LC75342 and LC75342M by applying the stipulated serial data to the CL, DI, and CE pins. This data consists of a total of 40 bits, of which 8 bits are the address and 32 bits are the data itself. • Address code (B0 to A3) The LC75342 and LC75342M have an 8-bit address code, and can be used together with other ICs that support the Sanyo CCB serial bus format ...

Page 6

... LC75342, 75342M D6 D7 Operation + + + + +18 dB ...

Page 7

... LC75342, 75342M D10 D11 D12 D13 D14 ...

Page 8

... Treble Control D16 D17 LC75342, 75342M D10 D11 D12 D13 D14 ...

Page 9

... Channel Selection D26 D27 Test Mode D28 D29 0 0 These bits are used for IC testing and must all be set to 0 during normal operation. LC75342, 75342M D22 D23 D24 D25 Operation + + ...

Page 10

... Connections for the resistors and capacitors that form the bass band filters. 24 RBASS1 25 RBASS2 LIN 9 • Volume control and equalizer input RIN 22 5 LOUT • Volume and equalizer outputs 26 ROUT 8 LTRE • Connections for the capacitors that form the treble band filters. 23 RTRE LC75342, 75342M Description Notes Continued on next page. No. 6271-10/20 ...

Page 11

... Serial data and clock inputs used for IC control • Electronic volume and tone control testing This pin must be tied • Unused These pins must be left open or connected to V operation. 27 LC75342, 75342M Description V voltage generator circuit used as the DD during normal operation. SS during normal SS Notes No. 6271-11/20 ...

Page 12

... Internal Equivalent Circuits • Selector block equivalent circuit The right channel is identical. Unit (resistance LC75342, 75342M No. 6271-12/20 ...

Page 13

... Unit (resistance Set switches SW1 and SW3 to the on position for boost, and set switches SW2 and SW4 to the on position for cut. For a flat (0 dB) response, set the 0dBSW, SW2, and SW3 switches on. LC75342, 75342M The right channel is identical. Unit (resistance No. 6271-13/20 ...

Page 14

... Volume block internal equivalent circuit LC75342, 75342M To treble block The right channel is identical. Unit (resistance: ) No. 6271-14/20 ...

Page 15

... Test Circuits • Total harmonic distortion LC75342, 75342M Distortion analyzer Units (resistance: , capacitnace: F) Microcontroller The right channel is identical. No. 6271-15/20 ...

Page 16

... Output noise voltage LC75342, 75342M Noise meter Microcontroller The right channel is identical. Units (resistance: , capacitnace: F) No. 6271-16/20 ...

Page 17

... Crosstalk Volt meter LC75342, 75342M Units (resistance: , capacitnace: F) Microcontroller The right channel is identical. No. 6271-17/20 ...

Page 18

... C = —————— = ——————————— R3R2 2 100 66000 3700 (3) Determine Q. R3R2 ——— • ——— 2.1 2R3 R3R2 LC75342, 75342M ) 66000 3 0.1 µF No. 6271-18/20 ...

Page 19

... All tone control settings flat With the volume control at the –10 dB position 0.01 With the volume control at the 0 dB position 0.001 Supply voltage, V — LC75342, 75342M Bass Control Frequency Characteristics -10 - -30 -35 -40 -45 -10 0 ...

Page 20

... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of December, 1999. Specifications and information herein are subject to change without notice. LC75342, 75342M KHz KHz 10 PS No. 6271-20/20 ...

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