LC75341 Sanyo Semiconductor Corporation, LC75341 Datasheet

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LC75341

Manufacturer Part Number
LC75341
Description
CMOS IC
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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LC75341 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

... Volume Control Block 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 LC75341, 75341M = Symbol Pin Conditions V max CE, DI, CL L4, V max ...

Page 3

... High-level input current I CL, DI, CE Low-level input current I CL, DI, CE Pin Assignment LC75341, 75341M Conditions = 1 Vrms kHz, all flat overall Vrms kHz all flat overall IN – + LC75341, 75341M Ratings Unit min typ max 0. 9.3 µV – µA –10 µA (Top view) No. 6270-3/20 ...

Page 4

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

Page 5

... Control System Timing and Data Format Applications control the LC75341 and LC75341M 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 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 D7 Operation + + + + + + + + + + +30 dB No. 6270-6/20 ...

Page 7

... Volume Control LC75341, 75341M D10 D11 D12 D13 D14 D15 Operation – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – ...

Page 8

... Volume Control Treble Control D16 D17 LC75341, 75341M D10 D11 D12 D13 D14 D18 D19 Operation – – – – –10 dB D15 Operation 0 – – – – – – – – – – – – – – – – – – ...

Page 9

... Bass Control D20 D21 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. LC75341, 75341M D22 D23 D24 D25 Operation + + + + + + Operation RCH LCH Left and right together ...

Page 10

... Volume control and equalizer input 18 RIN • Connection to the 0.5 analog signal ground. 22 Vref Applications must connect a capacitor of about 10 µF between this pin and V to exclude power supply ripple. SS LC75341, 75341M Description V voltage generator circuit used as the DD Notes Continued on next page. No. 6270-10/20 ...

Page 11

... The internal analog switches operate at this point. Data transfer is enabled when this pin is high • Serial data and clock inputs used for IC control Internal Equivalent Circuits • Selector block equivalent circuit The right channel is identical. Unit (resistance LC75341, 75341M Description Notes No. 6270-11/21 ...

Page 12

... 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. LC75341, 75341M The right channel is identical. Unit (resistance No. 6270-12/20 ...

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

... Q = ——— • ——— 2.1 2R3 R3R2 • Treble band circuit The treble band circuit provides shelving characteristics. This section presents the equivalent circuit in boost mode and the formulas used to calculate the external component values. LC75341, 75341M ) 66000 3 0.1 µF No. 6270-17/20 ...

Page 18

... Applications should cover the CL, DI, and CE pin lines with the ground pattern, or should use shielded cables for these lines to prevent the high-frequency digital signals transmitted over these lines from entering analog signal system. • When the oscillation occurs, connect a resistor of at least 200 LC75341, 75341M ) 2 ...

Page 19

... KHz 100 kHz low-pass weighting All tone control settings flat 0.1 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 — LC75341, 75341M Bass Control Frequency Characteristics -10 - -20 -25 -30 - THD - Frequency Characteristics (1) 1 ...

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. LC75341, 75341M KHz KHz ...

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