lc75341m Sanyo Semiconductor Corporation, lc75341m Datasheet

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lc75341m

Manufacturer Part Number
lc75341m
Description
Single-chip Volume And Tone Control System
Manufacturer
Sanyo Semiconductor Corporation
Datasheet
Ordering number : ENN*6270
Preliminary
Overview
The LC75341 and LC75341M 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
3067-DIP24S
unit: mm
3112-MFP24S
0.81
1
24
24
1
1.78
0.48
21.2
12.6
LC75341, 75341M
0.35
[LC75341M]
[LC75341]
0.95
1.0
D2499RM (OT) No. 6270-1/20
12
12
13
13
0.8
SANYO: MFP24S
SANYO: DIP24S
0.15
CMOS IC

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lc75341m Summary of contents

Page 1

... Ordering number : ENN*6270 Preliminary Overview The LC75341 and LC75341M 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

... Internal feedback resistance LC75341, 75341M = Symbol Pin Conditions V max CE, DI, CL L4, V max R4, LIN, RIN Ta 75°C LC75341 Pdmax Ta 75°C LC75341M with a PCB* Topr Tstg = Symbol Pin Conditions CL, DI 7 CL, DI ...

Page 3

Overall Characteristics Parameter Symbol Total harmonic distortion THD V Crosstalk CT V Output noise voltage V All flat overall, 80 kHz, L.P.F N Maximum attenuation Vomin All flat overall kHz Current drain High-level input ...

Page 4

Equivalent Circuit LC75341, 75341M No. 6270-4/20 ...

Page 5

... Address code (B0 to A3) The LC75341 and LC75341M have an 8-bit address code, and can be used together with other ICs that support the Sanyo CCB serial bus format. ...

Page 6

Input Gain Control LC75341, 75341M D6 ...

Page 7

Volume Control ...

Page 8

Volume Control ...

Page 9

Bass Control D20 D21 Channel Selection D26 D27 Test Mode ...

Page 10

Pin Functions Pin No. Pin • Input signal connections LSEL0 • Input selector outputs 17 RSEL0 5 LBASS • Connections for the resistors ...

Page 11

Continued from preceding page. Pin No. Pin V 3 • Ground • Power supply DD • Chip enable Data is written to the internal latch when this pin goes from high to low The internal ...

Page 12

Treble and bass band block internal equivalent circuit From volume block The right channel is identical. Unit (resistance Set switches SW1 and SW3 to the on position for boost, and set switches SW2 and SW4 to the ...

Page 13

Volume block internal equivalent circuit LC75341, 75341M To treble block The right channel is identical. Unit (resistance: ) No. 6270-13/20 ...

Page 14

Test Circuits • Total harmonic distortion LC75341, 75341M Distortion analyzer Units (resistance: , capacitnace: F) Microcontroller The right channel is identical. No. 6270-14/20 ...

Page 15

Output noise voltage LC75341, 75341M Units (resistance: , capacitnace: F) Noise meter Microcontroller The right channel is identical. No. 6270-15/20 ...

Page 16

Crosstalk Volt meter LC75341, 75341M Units (resistance: , capacitnace: F) Microcontroller No. 6270-16/20 ...

Page 17

Bass Band Circuit This section presents the equivalent circuit and the calculations for the external capacitors and resistors used to achieve a center frequency of 100 Hz. • Bass band equivalent circuit • Sample calculation Specifications Center frequency ...

Page 18

Sample calculation Specifications - Set frequency 26,000 Hz Gain at maximum boost +10dB Let R1 = 16.240 35.461 K , Substitute the above constants into the following formulas. ( ...

Page 19

Volume Control Step Characteristics 0 -10 -20 -30 -40 - dBV IN - KHz All tone control -90 settings flat -100 - -80 -70 -60 -50 -40 -30 ...

Page 20

THD - Input Level Characteristics ( 0.1 0.01 0.001 -20 -15 - Input level, V — dBV IN Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of ...

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