SANYO LC7527E Datasheet

Overview

The LC7527E is a microprocessor controllable seven-band
graphic equalizer LSI that does not require the use of
external semiconductor inductors (simulated inductors).

Functions

• Left and right channel seven-band graphic equalizers

• Each band operates in ±2 dB steps.

• Each band has a maximum boost of +12 dB and a
maximum cut of –12 dB for a total of 13 settings.

• Independent left and right channel operation

• Serial data input supports CCB format communications
with the system controller.

• CMOS LSI with a 12 V breakdown voltage

Features

• This LSI, in conjunction with a control microprocessor,
can implement in two chips, an electronic graphic
equalizer with the following features.
— One touch gain control for each band
— One touch memory setting recall allows users to

select desired frequency characteristics for each
track.

— Since the LC7527E includes band filter amplifiers

on chip, capacitors are the only external components
required in application systems.

— Minimal switching noise due to the use of a Silicon

gate CMOS process.

Package Dimensions

unit: mm

3159-QFP64E

CMOS LSI

O3096HA(OT)/90894TH (OT) 4466-1/11

SANYO: QFP64E

[LC7527E]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

Graphic Equalizer System

LC7527E

Ordering number : EN4466B

• 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. 4466-2/11

LC7527E

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

DD-VEE

max AVDD, AVEE, DVDD, DVEE* 12 V

V

IN

max1 CL, DI, CE VSS– 0.3 to VDD+ 0.3 V

Maximum input voltage V

IN

max2 LIN1, LIN2, RIN1, RIN2 VEE– 0.3 to VDD+ 0.3 V

V

IN

max3 S1 VEE– 0.3 to VDD+ 0.3 V
Allowable power dissipation Pd max Ta ≤ 85°C 280 mW
Operating temperature Topr –40 to +85 °C
Storage temperature Tstg –50 to +125 °C

Specifications

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

Note: * –6 V ≤ VEE≤ VSS≤ V

DD

Parameter Symbol Conditions

Ratings

Unit

min typ max

V

DD

AVDD, DV

DD

5 V

Supply voltage V

EE

AVEE, DV

EE

–5 V

V

DD-VEEAVDD

, AVEE, DVDD, DV

EE

8.0 11.0 V

Input high level voltage V

IH

CL, DI, CE 3.0 V

DD

V

Input low level voltage V

IL

CL, DI, CE V

SS

1.0 V

Input amplitude voltage

V

IN

1 LIN1, LIN2, RIN1, RIN2 V

EE

V

DD

Vp-p

V

IN

2 S1 V

EE

V

DD

V

Clock pulse width t

øW

CL 1 µs
Setup time tsetup 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 = 25°C, VSS= 0 V

Parameter Symbol Conditions

Ratings

Unit

min typ max

THD (1) V

OUT

= 1 Vrms, FLAT, f = 20 kHz 0.01 0.05 %

THD (2) V

OUT

= 1 Vrms, FLAT, f = 1 kHz 0.001 0.005 %

Total harmonic distortion

THD (3)

V

OUT

= 300 mVrms, FLAT, f = 20 kHz

0.042 0.2 %

with all bands at full boost

THD (4)

V

OUT

= 300 mVrms, FLAT, f = 1 kHz

0.045 0.2 %

with all bands at full boost
Crosstalk CT V

OUT

= 1 Vrms, f = 20 kHz, FLAT, Rg = 1 kΩ 58 dB
Setting error ∆B with other bands flat –2 +2 dB
Current drain I

DD

VDD-VEE= 11 V 30 mA

Analog switch off leakage current I

OFF

LIN1, LIN2, RIN1, RIN2 10 µA

Electrical Characteristics at Ta = 25°C, VDD= 5 V, VEE= –5 V, VSS= 0 V

Electrical Characteristics Test Circuit

Pin Assignment

No. 4466-3/11

LC7527E

No. Unit (F)

C29, C30,

10 µ

C31, C32

No. Unit (Ω)

R1, R3,

7.5 k

R4, R6
R2, R5 1 M

No. Unit (F)
C1, C28 0.94 µ
C2, C27 0.034 µ
C3, C26 0.377 µ
C4, C25 0.0133 µ
C5, C24 0.1506 µ
C6, C23 5390 p
C7, C22 0.057 µ
C8, C21 2156 p
C9, C20 0.0242 µ
C10, C19 867 p
C11, C18 9200 p
C12, C17 3322 p
C13, C16 3770 p
C14, C15 1330 p

No. 4466-4/11

LC7527E

Pin Functions

Pin Pin No. Circuit type Function

Lf1C1
Lf1C2
Lf1C3

Rf1C1
Rf1C2
Rf1C3

Lf2C1
Lf2C2
Lf2C3

Rf2C1
Rf2C2
Rf2C3

Lf3C1
Lf3C2
Lf3C3

Rf3C1
Rf3C2
Rf3C3

Lf4C1
Lf4C2
Lf4C3

Rf4C1
Rf4C2
Rf4C3

Lf5C1
Lf5C2
Lf5C3

Rf5C1
Rf5C2
Rf5C3

Lf6C1
Lf6C2
Lf6C3

Rf6C1
Rf6C2
Rf6C3

Lf7C1
Lf7C2
Lf7C3

Rf7C1
Rf7C2
Rf7C3

AV

DD

AV

EE

DV

DD

DV

EE

V

SS

62
63
64

51
50
49

1
2
3

48
47
46

4
5
6

45
44
43

7
8
9

42
41
40

10
11
12

39
38
37

13
14
15

36
35
34

17
18
19

32
31
30

23
56
22
57
28

Left channel f1 band control block
External capacitor connections

Right channel f1 band control block
External capacitor connections

Left channel f2 band control block
External capacitor connections

Right channel f2 band control block
External capacitor connections

Left channel f3 band control block
External capacitor connections

Right channel f3 band control block
External capacitor connections

Left channel f4 band control block
External capacitor connections

Right channel f4 band control block
External capacitor connections

Left channel f5 band control block
External capacitor connections

Right channel f5 band control block
External capacitor connections

Left channel f6 band control block
External capacitor connections

Right channel f6 band control block
External capacitor connections

Left channel f7 band control block
External capacitor connections

Right channel f7 band control block
External capacitor connections

Power supply: +5 V typ. Audio signal power supply
Power supply: –5 V typ. Audio signal power supply
Power supply: +5 V typ. Logic signal power supply
Power supply: –5 V typ. Logic signal power supply
Power supply: 0 V
AV

DD

must be equal to DVDD, and AVEEmust be equal to

DV

EE

.

Continued on next page.