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LC75281 の電気的特性と機能

LC75281のメーカーはSanyo Semicon Deviceです、この部品の機能は「Parametric Equalizer System」です。


製品の詳細 ( Datasheet PDF )

部品番号 LC75281
部品説明 Parametric Equalizer System
メーカ Sanyo Semicon Device
ロゴ Sanyo Semicon Device ロゴ 




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LC75281 Datasheet, LC75281 PDF,ピン配置, 機能
Ordering number : EN5913
CMOS IC
LC75281E
Parametric Equalizer System
Overview
The LC75281E is a four-band stereo parametric equalizer.
A parametric equalizer is a fully general equalizer that
allows all three parameters that define an equalizer’s
characteristics, i.e., the center frequency, gain, and Q, to
be set independently.
Functions
• Four-band (low, low mid, high mid, and high) left and
right channels parametric equalizer
• For each band:
Center frequency: 11 positions
Gain: 13 positions in ±2dB steps
Q: Variable over 8 positions
• The center frequency, gain, and Q control settings are
set using serial data input in the CCB format.
Features
• A parametric equalizer with the following features can
be implemented with just two ICs: this IC and a
microcontroller.
• The center frequency, gain, and Q can be controlled by a
single operation.
• Memory recall by a single operation can be implement-
ed using preset values.
• Either shelving or peaking characteristics can be
selected for the low band.
Package Dimensions
unit: mm
3159-QFP64E
[LC75281E]
SANYO: QFP64E (QIP64E)
• 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.
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 Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
101698RM (OT) No. 5913-1/10

1 Page





LC75281 pdf, ピン配列
LC75281E
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Symbol
Maximum supply voltage
Maximum input voltage
Allowable power dissipation
Operating temperature
VDD max
VIN1 max
VIN2 max
Pd max
Topr
LIN, RIN
CL, CE, DI
Ta 85°C
Storage temperature
Tstg
Conditions
Allowable Operating Ranges at Ta = –40 to +85°C, VSS = 0 V
Parameter
Symbol
Conditions
Supply voltage
High-level input voltage
Low-level input voltage
Input voltage range
Load resistance
Input pulse width
Setup time
Hold time
Operating frequency
VDD
VIH
VIL
VIN
RL
tøw
tsetup
thold
fopg
CL, CE, DI
CL, CE, DI
LIN, RIN
LOUT, ROUT, MIXOUT
CL
CL, CE, DI
CL, CE, DI
CL
Electrical Characteristics at Ta = 25°C, f = 1 kHz, VDD = 8 V, VSS = 0 V
Parameter
Symbol
Conditions
Current drain
Output voltage
Total harmonic distortion
Output noise voltage
Crosstalk between inputs
High-level input current
Low-level input current
DC variation
Pin Functions
Pin No.
64
1
2
3
4
5
6
7
8
Pin
LLC2
LLC1
LLC4
LLC3
LLC5
LLMC2
LLMC1
LLMC4
LLMC3
IDD
VO
THD1
THD2
VN1
VN2
VN3
VN4
CT
IIH
IIL
VDC
VDD
LOUT, ROUT: THD = 1%
LOUT, ROUT: Vo = Flat, VIN = 0 dBV
LOUT, ROUT: Vo = Boost,
All bands +2 dB, VIN = –15 dBV
LOUT, ROUT: Vo = Flat,
Rg = 1 k, IHF-A filters
LOUT, ROUT: Vo = Flat,
Rg = 1 k, DIN filters
LOUT, ROUT, Rg = 1 k, f0 = f1, Q = Q1
IHF-A filter, all bands at full boost, with the external
constants the same as those for the center
frequency (example 1)
LOUT, ROUT, Rg = 1 k, f0 = f1, Q = Q1
IHF-A filters, all bands at full cut, with the external
constants the same as those for the center frequency
(example 1)
VIN = 1 Vrms, f = 1 kHz
CL, DI, CE, VIN = 9 V
CL, DI, CE, VIN = 0 V
All bands
G = +12 dB, Q: Setting switched from Q1 to Q2
With the external constants the same as those for the
center frequency (example 1) shown on page 7.
Left channel low band control block.
External capacitor connections.
Function
Left channel low mid band control block.
External capacitor connections.
Ratings
10.5
0 to VDD
0 to VDD
300
–40 to +85
–50 to +125
Unit
V
V
V
mW
°C
°C
min
6.0
4.0
VSS
0
1
1
1
1
Ratings
typ
max
9.0
VDD
1.0
VDD
500
Unit
V
V
V
V
k
µs
µs
µs
kHz
Ratings
Unit
min typ max
36 50 mA
2.2 Vrms
0.005
0.01
%
0.1 1 %
7 15 µs
13 µs
58 µs
23
60 80
–1
µs
dB
1 µA
µA
–10 +10 mV
Continued on next page.
No. 5913-3/10


3Pages


LC75281 電子部品, 半導体
LC75281E
• Center frequency (fo)
Band
f1
f2
f3
f4
f5
f6
f7
f8
f9 f10 f11 External capacitor (µF)
Low 31.5
40
50
63 80 100 125
160 200 250 315
0.047
Low mid 160
200
250
315 400
500
630
800
1 k 1.25 k 1.6 k
0.0094
High mid 630
800
1 k 1.25 k 1.6 k
2 k 2.5 k 3.15 k
4k
5 k 6.3 k
0.00235
High
1.6 k
2 k 2.5 k 3.15 k
4k
5 k 6.3 k
8 k 10 k 12.5 k 16 k
0.0094
External capacitor calculations
Figure a shows the LC75281E internal f0 control circuit. The center frequency f0 can be set to one of 11 frequencies in
1/3 octave steps by switching the resistors in the figure.
Figure a
The value of the external capacitor C is determined by substituting the desired center frequency in the following formula.
1 Rb//Rf
Cf = 2π Rf fo max Ra + (Rb//Rf)
fo max: Corresponds to 315 Hz in the low band row in the preceding table.
Equivalent Circuit for Cf calculation
• Gain: 13 positions in 2-dB steps
•Q
Q
OCT
Q1
0.404
3
Q2
0.667
2
Q3
1.41
1
Q4
2.15
2/3
Q5
2.87
1/2
Q6
4.32
1/3
Q7
5.76
1/4
Q8
8.65
1/6
No. 5913-6/10

6 Page



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部品番号部品説明メーカ
LC75281

Parametric Equalizer System

Sanyo Semicon Device
Sanyo Semicon Device
LC75281E

Parametric Equalizer System

Sanyo Semicon Device
Sanyo Semicon Device


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