LC75342M_技术文档

Ordering number : ENN*6271

CMOS IC

LC75342, 75342M

Single-Chip Volume and Tone Control System

Preliminary

Overview

Package Dimensions

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.

unit: mm

3196-DIP30SD

[LC75342]

30

16

Functions

• Volume: 0 dB to –79 dB (in 1-dB steps) and –∞, for a

total of 81 settings.

The volume can be controlled independently in the left

and right channels to implement a balance function.

• Bass boost: Up to +20 dB in 2-dB steps. Peaking

characteristics.

1

15

27.2

• Treble: ±10 dB in 2-dB steps. Shelving characteristics.

• Selector: One of four sets of left/right inputs can be

selected.

• Input gain: The input signal can be boosted by from

0 dB to +30 dB in 2-dB steps.

0.48

0.95

1.14

1.78

SANYO: DIP30SD

unit: mm

3216-MFP30S

Features

[LC75342M]

• On-chip buffer amplifiers minimize the number of

external components.

30

16

• Fabricated in a silicon gate CMOS process to minimize

switching noise from internal switches.

• Built-in analog ground reference voltage generation

circuit.

• All controls can be set from serially transferred data.

Supports the CCB standard.

1

15

0.15

15.3

0.35

1.0

0.65

SANYO: MFP30S

•

CCB is a trademark of SANYO ELECTRIC CO., LTD.

CCB is a 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

D2499RM (OT) No. 6271-1/20

LC75342, 75342M

Specifications

Absolute Maximum Ratings at Ta = 25°C, V = 0 V

SS

Parameter

Maximum supply voltage

Symbol

Conditions

Ratings

Unit

V

V_DDmax

V_DD

11

CE, DI, CL, L1 to L4,

R1 to R4, LIN, RIN

Maximum input voltage

V_INmax

V_SS– 0.3 to V_DD+ 0.3

V

Ta ≤ 75°C

LC75342

450

Allowable power dissipation

Pdmax

mW

Ta ≤ 75°C

with a PCB*

LC75342M

Operating temperature

Storage temperature

Topr

Tstg

–30 to +75

°C

–40 to +125

Note: * Printed circuit board size: 76.1 × 114.3 × 1.6 mm, printed circuit board material: glass/epoxy resin

Allowable Operating Ranges at Ta = –30 to +75°C, V = 0 V

SS

Ratings

Parameter

Symbol

Conditions

Unit

min

4.5

typ

max

Supply voltage

V_DD

V_IH

V_DD

10

V

High-level input voltage

CL, DI, CE

2.7

V_SS

7.5 ≤ V_DD≤ 10.0

4.5 ≤ V_DD< 7.5

1.0

0.8

Low-level input voltage

V_IL

V_IN

CL, DI, CE

V

CE, DI, CL, L1 to L4,

R1 to R4, LIN, RIN

Input voltage amplitude

V_SS

V_DD

Vp-p

Input pulse width

Setup time

tøW

tsetup

thold

fopg

CL

1

µs

CL, DI, CE

CL

Hold time

µs

Operating frequency

500

kHz

Electrical Characteristics at Ta = 25°C, V = 9 V, V = 0 V

DD

SS

Input Block

Ratings

typ

Parameter

Symbol

Conditions

Unit

min

max

Maximum input gain

Step resolution

Gin max

Gstep

+30

dB

+2

L1, L2, L3, L4

Input resistance

Rin

50

kΩ

R1, R2, R3, R4

LSEL0, RSEL0

Clipping level

Vcl

Rl

THD = 1.0%, f = 1 kHz

2.90

Vrms

Output load resistance

10

kΩ

Volume Control Block

Ratings

typ

Parameter

Symbol

Rin

Conditions

Unit

min

max

Input resistance

L_IN, R_IN

50

kΩ

Bass Band Equalizer Control Block

Ratings

typ

Parameter

Symbol

Conditions

max.boost

Unit

min

±18

Control range

Geq

Estep

Rfeed

±20

2

±22

dB

kΩ

Step resolution

1

3

Internal feedback resistance

66.6

Treble Band Equalizer Control Block

Ratings

typ

Parameter

Symbol

Conditions

Unit

min

max

Control range

Geq

Estep

Rfeed

max.boost/cut

±8

1

±10

2

±12

3

dB

kΩ

Step resolution

Internal feedback resistance

51.7

No. 6271-2/20

LC75342, 75342M

Overall Characteristics

Ratings

typ

Parameter

Symbol

Conditions

Unit

min

max

0.01

Total harmonic distortion

Crosstalk

THD

CT

V

_IN= 1 Vrms, f = 1 kHz, all flat overall

%

dB

µV

dB

mA

µA

V_IN= 1 Vrms, f = 1 kHz, Rg = 1 kΩ, all flat overall

All flat overall, 80 kHz, L.P.F

All flat overall, f = 1 kHz

80

Output noise voltage

Maximum attenuation

Current drain

V_N

9.3

–90

37

Vomin

I_DD

V_DD– V_SS= +10 V

High-level input current

Low-level input current

I_IH

CL, DI, CE: V_IN= 10 V

10

I_IL

CL, DI, CE: V_IN= 0 V

–10

Pin Assignment

LC75342, 75342M

(Top view)

No. 6271-3/20

LC75342, 75342M

Equivalent Circuit

No. 6271-4/20

LC75342, 75342M

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.

Address code

B0

0

B1

1

B2

0

B3

0

A0

0

A1

0

A2

0

A3

1

(LSB)

(82HEX)

• Control code allocation

Input switching control

D0

D1

D2

D3

Operation

(L1, L2, L3, L4, R1, R2, R3, R4)

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

L1 (R1) ON

L2 (R2) ON

L3 (R3) ON

L4 (R4) ON

All switches off

No. 6271-5/20

LC75342, 75342M

Input Gain Control

D4

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

D5

0

1

0

1

0

1

0

1

D6

0

1

0

1

D7

0

1

Operation

0 dB

+2 dB

+4 dB

+6 dB

+8 dB

+10 dB

+12 dB

+14 dB

+16 dB

+18 dB

+20 dB

+22 dB

+24 dB

+26 dB

+28 dB

+30 dB

No. 6271-6/20

LC75342, 75342M

Volume Control

D8

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

D9

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

D10

0

1

0

1

0

1

0

1

0

1

0

1

0

D11

0

1

0

1

0

1

0

D12

0

1

0

1

D13

0

1

D14

0

D15

0

Operation

0 dB

–1 dB

–2 dB

–3 dB

–4 dB

–5 dB

–6 dB

–7 dB

–8 dB

–9 dB

–10 dB

–11 dB

–12 dB

–13 dB

–14 dB

–15 dB

–16 dB

–17 dB

–18 dB

–19 dB

–20 dB

–21 dB

–22 dB

–23 dB

–24 dB

–25 dB

–26 dB

–27 dB

–28 dB

–29 dB

–30 dB

–31 dB

–32 dB

–33 dB

–34 dB

–35 dB

–36 dB

–37 dB

–38 dB

–39 dB

–40 dB

–41 dB

–42 dB

–43 dB

–44 dB

–45 dB

–46 dB

–47 dB

–48 dB

–49 dB

–50 dB

No. 6271-7/20

LC75342, 75342M

Volume Control

D8

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

D9

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

D10

0

1

0

1

0

1

0

1

0

D11

0

1

0

1

0

D12

1

0

1

D13

1

0

D14

0

1

D15

0

Operation

–51 dB

–52 dB

–53 dB

–54 dB

–55 dB

–56 dB

–57 dB

–58 dB

–59 dB

–60 dB

–61 dB

–62 dB

–63 dB

–64 dB

–65 dB

–66 dB

–67 dB

–68 dB

–69 dB

–70 dB

–71 dB

–72 dB

–73 dB

–74 dB

–75 dB

–76 dB

–77 dB

–78 dB

–79 dB

–∞ dB

Treble Control

D16

1

D17

0

D18

1

D19

0

Operation

+10 dB

+8 dB

+6 dB

+4 dB

+2 dB

0 dB

0

1

0

1

0

1

0

1

0

1

0

1

–2 dB

–4 dB

–6 dB

–8 dB

–10 dB

0

1

0

1

0

1

0

1

0

1

No. 6271-8/20

LC75342, 75342M

Bass Control

D20

0

D21

1

D22

0

D23

1

D24

0

D25

0

Operation

+20 dB

+18 dB

+16 dB

+14 dB

+12 dB

+10 dB

+8 dB

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

+6 dB

0

1

0

+4 dB

1

0

1

0

+2 dB

0

0 dB

1

0

1

0

–2 dB

0

1

0

1

0

–4 dB

1

0

1

0

–6 dB

0

1

0

1

0

–8 dB

1

0

1

0

1

0

–10 dB

–12 dB

–14 dB

–16 dB

–18 dB

–20 dB

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

1

0

Channel Selection

D26

0

D27

0

Operation

1

0

RCH

LCH

0

1

Left and right together

Test Mode

D28

0

D29

0

D30

0

D31

0

Operation

These bits are used for IC testing and must all be set to 0

during normal operation.

No. 6271-9/20

LC75342, 75342M

Pin Functions

Pin No.

Description

Notes

14

13

12

11

17

18

19

20

L1

L2

L3

L4

R1

R2

R3

R4

• Input signal connections

10

21

LSEL0

RSEL0

• Input selector outputs

7

6

LBASS1

LBASS2

RBASS1

RBASS2

• Connections for the resistors and capacitors that form the bass band

filters.

24

25

LIN

9

• Volume control and equalizer input

RIN

22

5

LOUT

ROUT

• Volume and equalizer outputs

26

LTRE

RTRE

8

• Connections for the capacitors that form the treble band filters.

23

Continued on next page.

No. 6271-10/20

LC75342, 75342M

Continued from preceding page.

Pin No.

Description

Notes

• Connection to the 0.5 × V_DDvoltage generator circuit used as the

analog signal ground.

28

Vref

Applications must connect a capacitor of about 10 µF between this pin

and V_SSto exclude power supply ripple.

V_SS

V_DD

3

• Ground

29

• Power supply

• Chip enable

Data is written to the internal latch when this pin goes from high to low.

The internal analog switches operate at this point. Data transfer is

enabled when this pin is high.

2

CE

1

DI

• Serial data and clock inputs used for IC control.

30

CL

• Electronic volume and tone control testing

V_SS

4

This pin must be tied to V_SSduring normal operation.

15

16

27

• Unused.

NC

These pins must be left open or connected to V_SSduring normal

operation.

No. 6271-11/20

LC75342, 75342M

Internal Equivalent Circuits

• Selector block equivalent circuit

The right channel is identical.

Unit (resistance: kΩ)

No. 6271-12/20

LC75342, 75342M

• Treble and bass band block internal equivalent circuit

From

volume

block

The right channel is identical.

Unit (resistance: kΩ)

The right channel is identical.

Unit (resistance: kΩ)

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.

No. 6271-13/20

LC75342, 75342M

• Volume block internal equivalent circuit

To

treble

block

The right channel is identical.

Unit (resistance: Ω)

No. 6271-14/20

LC75342, 75342M

Test Circuits

• Total harmonic distortion

Microcontroller

The right channel is

identical.

Distortion analyzer

Units (resistance: Ω, capacitnace: F)

No. 6271-15/20

LC75342, 75342M

• Output noise voltage

Microcontroller

The right channel

is identical.

Noise meter

Units (resistance: Ω, capacitnace: F)

No. 6271-16/20

LC75342, 75342M

• Crosstalk

Microcontroller

The right channel

is identical.

Volt meter

Units (resistance: Ω, capacitnace: F)

No. 6271-17/20

LC75342, 75342M

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: f0 = 100 Hz

Gain at maximum boost: G = 20 dB

Let R1 = 0, R2 = 66.6 KΩ, and C1 = C2 = C.

(1) Determine R2 from the fact that G = 20 dB.

R2

2R3

G

+20dB

= 20 × LOG

1 + ——

(

)

10

R2

66000

R3 = ———————— = ————— ≠ 3.7 kΩ

2 (10^G+20dB/20– 1)

2 × (10 – 1)

(2) Determine C from the fact that the center frequency f0 = 100 Hz.

1

f 0 = ————————

2π R3R2C1C2

1

C = —————— = ——————————— ≠ 0.1 µF

2πf 0 R3R2 2π × 100 66000 × 3700

(3) Determine Q.

R3R2

1

Q = ——— • ——— ≠ 2.1

2R3 R3R2

No. 6271-18/20

LC75342, 75342M

Volume Control Step Characteristics

Bass Control Frequency Characteristics

5

-0

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-5

-10

-15

-20

-25

-30

-35

-40

-45

V_DD= 9 V

V_SS= 0 V

V_IN= 0 dBV

f = 1 KHz

All tone control

settings flat

V_DD= 9 V, V_SS= 0 V

V_IN= –20 dBV

With external capacitor

and resistor values of

0.1 µF and 3.7 kΩ,

respectively

-

∞

-80

-70

-60

-50

-40

-30

-20

-10

0

10

100

1000

10000

Step — dB

Frequency, f -—Hz

THD - Frequency Characteristics (1)

Treble Control Frequency Characteristics

1

0

V_DD= 9 V

V_SS= 0 V

-5

V_IN= 0 dBV

100 kHz low-pass

weighting

All tone control

settings flat

-10

-15

-20

-25

-30

-35

-10

0.1

With the volume

control at the

–10 dB position

V_DD= 9 V

V_SS= 0 V

V_IN= –20 dBV

With an external

capacitor value of

2700 pF

0.01

With the volume control at

the 0 dB position

0.001

10

100

1000

10000

100000

10

100

1000

10000

100000

Frequency, f — Hz

THD - Supply Voltage Characteristics (1)

V_SS= 0 V

V_IN= 0 dBV

f = 1 KHz

100 kHz low-pass

weighting

THD - Frequency Characteristics (2)

1

V_DD= 9 V

V_SS= 0 V

V_IN= 0 dBV

100 kHz low-pass

weighting

0.1

All tone control

settings flat

All tone control

settings flat

With the

volume control

at the –10 dB

position

With the volume control

at the 0 dB position

0.01

With the volume control at

the –10 dB position

With the volume control at

the 0 dB position

0.001

4

5

6

7

8

9

10

11

10

100

1000

10000

100000

Supply voltage, V_DD— V

Frequency, f — Hz

THD - Supply Voltage Characteristics (2)

V_SS= 0 V

V_IN= –10 dBV

f = 1 KHz

100 kHz low-pass

weighting

All tone control

settings flat

THD - Input Level Characteristics (1)

1

10

V_DD= 9 V

V_SS= 0 V

100 kHz low-pass

weighting

All tone control

settings flat

1

0.1

With the volume control

at the –10 dB position

f = 20 KHz

0.01

f = 1 KHz

With the volume control at

the 0 dB position

0.001

-20

-15

-10

-5

0

5

10

4

5

6

7

8

9

10

11

Input level, V_IN— dBV

Supply voltage, V_DD— V

No. 6271-19/20

LC75342, 75342M

THD - Input Level Characteristics (2)

V_DD= 9 V

10

V_SS= 0 V

100 kHz low-pass weighting

All tone control settings flat

With the volume control at the

–10 dB position

1

0.1

f = 20 KHz

f = 1 KHz

0.01

0.001

-20

-15

-10

-5

0

5

10

Input level, V_IN— dBV

Specifications of any and all SANYO products described or contained herein stipulate the performance,

characteristics, and functions of the described products in the independent state, and are not guarantees

of the performance, characteristics, and functions of the described products as mounted in the customer’s

products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,

the customer should always evaluate and test devices mounted in the customer’s products or equipment.

SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all

semiconductor products fail with some probability. It is possible that these probabilistic failures could

give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,

or that could cause damage to other property. When designing equipment, adopt safety measures so

that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective

circuits and error prevention circuits for safe design, redundant design, and structural design.

In the event that any or all SANYO products (including technical data, services) described or contained

herein are controlled under any of applicable local export control laws and regulations, such products must

not be exported without obtaining the export license from the authorities concerned in accordance with the

above law.

No part of this publication may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photocopying and recording, or any information storage or retrieval system,

or otherwise, without the prior written permission of SANYO Electric Co., Ltd.

Any and all information described or contained herein are subject to change without notice due to

product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”

for the SANYO product that you intend to use.

Information (including circuit diagrams and circuit parameters) herein is for example only; it is not

guaranteed for volume production. 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.

PS No. 6271-20/20


型号：	LC75342M
厂家：	SANYO SEMICON DEVICE
描述：	Single-Chip Volume and Tone Control System 单芯片音量和音调控制系统
文件：	总20页 (文件大小：305K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LC75342M [SANYO]

相关型号：

LC75343

LC75343M

LC75344M

LC75344MD

LC75344MD-AH

LC75345M

LC75347E

LC75348

LC75348M

LC7534M

LC7535

LC7535M