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PDF LC7527 Data sheet ( Hoja de datos )

Número de pieza LC7527
Descripción Graphic Equalizer System
Fabricantes Sanyo Semicon Device 
Logotipo Sanyo Semicon Device Logotipo



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No Preview Available ! LC7527 Hoja de datos, Descripción, Manual

Ordering number : EN4466B
CMOS LSI
LC7527E
Graphic Equalizer System
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
Package Dimensions
unit: mm
3159-QFP64E
[LC7527E]
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.
• 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.
SANYO: QFP64E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3096HA(OT)/90894TH (OT) 4466-1/11

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LC7527 pdf
Continued from preceding page.
Pin Pin No.
LVref
RVref
58
55
LIN1
LIN2
RIN1
RIN2
CE
CL
DI
S1
59
60
54
53
27
25
26
24
NC 16
NC 20
NC 21
NC 29
NC 33
NC 52
NC 61
LC7527E
Circuit type
Function
Power supply: Analog ground
The impedance of the pattern connected to these pins should
be kept as low as possible.
LVref and RVref are not connected to the VSS pin.
Left channel audio signal input
IN1 is normally connected to an operational amplifier inverting
input.
IN2 is normally connected to an operational amplifier non-
inverting input.
Right channel audio signal input
IN1 is normally connected to an operational amplifier inverting
input.
IN2 is normally connected to an operational amplifier non-
inverting input.
Chip enable input. Internal data is latched when this pin goes
from high to low and the analog switches operate. Data
transfers are enabled when this pin is high.
Clock input. Schmitt inverter input circuit
Data input. Schmitt inverter input circuit
Dual chip system chip select input. By connecting S1 (this pin)
to either VDD or VEE, data input is enabled when the address
matches the corresponding address listed below.
S1 = VDD Address: 8C
S1 = VEE Address: 8D
No connection. Do not connect signals to these pins.
No. 4466-5/11

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LC7527 arduino
LC7527E
Usage Notes
1. The states of the internal analog switches are undefined when power is first applied. System output should be muted
until control data has been sent to the LC7527E.
2. To prevent the high frequency digital signals associated with data transfers over the CL, CI, and DI pins from
generating interference in the analog signals, either guard those lines with a ground pattern or use shielded cables.
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
s Anyone purchasing any products described or contained herein for an above-mentioned use shall:
ΠAccept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
s 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 October, 1996. Specifications and information herein are subject to
change without notice.
No. 4466-11/11

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