SANYO LC7536M Datasheet

Ordering number : EN6089

41399RM (OT) No. 6089-1/10

Overview

The LC7536M is an electronic volume control that
implements volume, balance, and loudness functions with
a minimum number of external components, and can be
controlled electronically with serial data.

Functions

• Volume: 81 positions from 0 to –79 dB (in 1-dB steps)

and –∞. Since the left and right channels can
be controlled separately, a balance function can
be implemented easily.

• Loudness: A tap is output from the –20 dB position of a
5 dB step volume control resistor ladder. A
loudness function can be implemented by
connecting an external RC circuit.

• S (select): Up to two LC7536M ICs can be used on the

same bus.

• Serial data input: The LC7536M supports control and

communication in the CCB format.

Features

• High voltage handling capability: ±16 V.

Package Dimensions

unit: mm

3216A-MFP30S

0.15

15.3

115

30 16

0.651.00.35

2.5max

2.15

0.1

0.65

7.9

9.2

10.5

SANYO: MFP30S

[LC7536M]

LC7536M

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Serially Controlled Electronic Volume Control that

Handles High Voltages

CMOS IC

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.

• 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.

No. 6089-2/10

LC7536M

Parameter Symbol Conditions Ratings Unit

V

DD

max VEE≤ VSS< VCC< V

DD

VSSto VSS+ 18 V

Maximum supply voltage V

EE

max VEE≤ VSS< VCC< V

DD

VSS– 18 to V

SS

V

V

CC

max VEE≤ VSS< VCC< V

DD

VSSto VSS+ 7 V

V

IN

max1 CL, DI, CE 0 to VCC+ 0.3 V

Maximum input voltage V

IN

max2 L5dBIN, R5dBIN, L1dBIN, R1dBIN VEE– 0.3 to VDD+ 0.3 V

V

IN

max3 S VCC– 0.3 to VDD+ 0.3 V
Allowable power dissipation Pd max Ta ≤ 75°C 250 mW
Operating temperature Topr –30 to +75 °C
Storage temperature Tstg –40 to +125 °C

Specifications

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

Parameter Symbol Conditions

Ratings

Unit

min typ max

V

DD

V

DD

VCC+ 4.5 16 V

Supply voltage V

EEVEE

–16 0 V

V

CC

V

CC

4.5 5 5.5 V

High-level input voltage

V

IH

1 CL, DI, CE 0.8 V

CC

V

CC

V

V

IH

2 S

0.8 × (VDD– VCC) + V

CC

V

DD

V

Low-level input voltage

V

IL

1 CL, DI, CE V

SS

0.2 V

CC

V

V

IL

2 S V

CC

0.2 × (VDD– VCC) + V

CC

V

Input voltage amplitude V

IN

L5dBIN, R5dBIN, L1dBIN, R1dBIN

V

EE

V

DD

Vp-p
Input pulse width tøW CL 1 µs
Setup time t

setup

CL, DI, CE 1 µs

Hold time t

hold

CL, DI, CE 1 µs

Operating frequency fopg CL 500 kHz

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

Parameter Symbol Conditions

Ratings

Unit

min typ max

THD1

V

IN

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

0.004 %

Total harmonic distortion

V

DD

– VEE= 32 V

THD2

V

IN

= 0.1 Vrms, f = 1 kHz, all controls flat overall,

0.02 %

V

DD

– VEE= 32 V

Crosstalk C

T

VIN= 1 Vrms, f = 1 kHz, VDD– VEE= 32 V,

–75 –60 dB

All controls flat overall, Rg = 1 kΩ

Output at maximum attenuation Vo min

VIN= 1 V rms, f = 20 kHz, volume control set at –∞,

–98 dB

V

DD

– VEE= 32 V

Output noise voltage V

N

All controls flat overall, Rg = 1 kΩ, IHF–A,

2 10 µV

V

DD

– VEE= 32 V

Total resistance

Rvol1 The 5-dB step volume block 75 kΩ
Rvol2 The 1-dB step volume block 20 kΩ

L5dBIN, R5dBIN, LCT1, RCT1, LCT2, RCT2, L5dBOUT,

Output off leakage current I

OFF

R5dBOUT, L1dBIN, R1dBIN, L1dBOUT, R1dBOUT, –10 +10 µA
LVM, RVM

High-level input current I

IH

CL, DI, CE, VIN= V

CC

+10 µA

Low-level input current I

IL

CL, DI, CE, VIN= V

SS

–10 µA

Current drain

I

DD

VDD= 16 V 1 mA

I

CC

VDD= 5.5 V 1 mA

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

Equivalent Circuit

Sample Application Circuit

No. 6089-3/10

LC7536M

L5dBIN

LCT1

LCT2

LVM

L5dBOUT

L1dBIN

L1dBOUT

S

CE

CL

DI

R5dBIN

RCT1

RCT2

RVM

R5dBOUT

R1dBIN

R1dBOUT

V

DD

V

CC

V

SS

V

EE

LATCHL

CONTROL

LEVEL SHIFT

SHIFT REGISTER

C

D

A11989

+

+ +

+

+

L5dBIN R5dBIN
LCT1

RCT1

LCT2

RCT2

L5dBOUT

R5dBOUT

L1dBIN

R1dBIN

L1dBOUT

R1dBOUT

LVM RVM

S

CE
DI
CL

V

DD

V

CC

CE

V

CC

V

DD

DI

V

SS

CL

µ-COM

S

V

EE

V

CC

V

DD

V

EE

+–

+ –

LC7536M #1

LC7536M #2

10 µF

10 µF
1 µF

10 µF

1 µF

1 MΩ

100 kΩ

1 MΩ

0.001 µF

0.068 µF

POWER
AMP

SPEKER

A11990

Control

SPEAKER

Level shift

Latch

Shift register