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PDF CXA2560 Data sheet ( Hoja de datos )
| Número de pieza | CXA2560 | |
| Descripción | Dolby B Type Noise Reduction System with Playback Equalizer Amplifier | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXA2560Q
Dolby∗ B Type Noise Reduction System with Playback Equalizer Amplifier
Description
The CXA2560Q is an IC designed for use in car
stereo cassette decks. Functions include Dolby B type
noise reduction (NR) system, playback equalizer
amplifier and music sensor into a single chip.
40 pin QFP (Plastic)
Features
• Few external parts
• Small package (40-pin QFP)
• Same pin configuration as for the Dolby B-C type
NR system (CXA2561Q) and no Dolby NR system
(CXA2559Q)
• Dolby B type NR and playback equalizer amplifier
into a single chip
• FORWARD/REVERSE head select switch
• Mute function
• Music signal interval detection level can be set by
the external resistors/capacitors (2 modes).
• High-frequency cut-off of the music sensor circuit
can be adjusted by the external capacitance.
Applications
• Car stereo cassette decks
• Playback-only cassette decks
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
• Supply voltage
VCC
• Operating temperature Topr
• Storage temperature Tstg
• Power dissipation
PD
12
–40 to +85
–65 to +150
430
V
°C
°C
mW
Operating Condition
Supply voltage
VCC
6.5 to 11
V
∗ This IC is available only to the licensees of Dolby Laboratories Licensing Corporation from whom licensing and applications
information may be obtained.
∗ "Dolby" and the double D symbols are trademarks of Dolby Laboratories Licensing Corporation.
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E97438A79-PS
1 page  
CXA2560Q
Pin
No.
Symbol
Typical pin voltage
I/O
I/O resist-
DC AC
ance
(Ta = 25°C, VCC = 8.0V, DVCC = 5.0V)
Equivalent circuit
Description
Vcc
13 MSTC
147 853
—
— ——
13
10k
Time constant for
detecting the
music signal
interval.
0.2V
when a
signal is
14 MSOUT
detected
; DVcc
—
O
—
when no
signal is
detected
14
17 MUTESW
0.0V
147
18 TAPESW when — I 100kΩ 17
open
18 100k
21
21 MSSW
16 NRSW
19 DRSW
0.0V
when
open
—
I 100kΩ 16
147
19 100k
–5–
GND
Vcc
Music sensor
output.
GND
Mute function
control.
Vcc Low (open) :
Mute OFF
High: Mute ON
Playback
equalizer amplifier
control.
Low (open) : 70µs
High: 120µs
Music sensor
control.
GND Low (open) :
MS ON
High : MS OFF
Vcc Dolby NR control.
Low (open) :
NR OFF
High: NR ON
Head select
control.
Low (open) :
FORWARD
GND High: REVERSE
5 Page 
Application Circuit
CXA2560Q
C7
0.01µ
R8
10k
LINEOUT2
GND GND
GND
C9
0.1µ
R9 C12 C14
18k 0.47µ 0.1µ
RVS2
FWD2
FWD1
RVS1
C4 R6
470p 180
R4
100k
R3
100k
C3
470p
C2
470p
R2
100k
R1
100k
C1 R5
470p 180
PBFB2
31
30 29 28
7k/12k
PBRIN2
32
PBGND
33
PBFIN2
34
C5
22µ VCT
35
45k
PBREF
36
PBFIN1
37
PBGND
38
300k
F2
30k
30k
F1
PBRIN1
39
PBFB1
40
300k
7k/12k
1 23
27 26 25 24 23 22 21
100k
T2
×1
NR
OFF/B
BIAS
MS MODE
MSMODE
20
DRSW
19
TAPESW
18
MUTE
TAPE EQ
FWD/RVS
VCC
LPF
MUTESW
17
NRSW
NR MODE 16
15 NC
MS ON/
OFF MSOUT
DET
14
×1
T1
100k
F3
OFF/B
NR
MSTC
13
G1FB
12
G2FB
11
4 5 6 7 8 9 10
R10 R11
3.9k 39k
From
Microcomputer
R13
100k
To Microcomputer
DVCC
C18
0.1µ
R12
1MEG
C6
0.01µ
R7
10k
C8
0.1µ
Vcc
C10
22µ
GND
C11 C13
0.47µ 0.1µ
GND
LINEOUT1
C17
120p
C19 C20
0.47µ 4.7n
GND
GND GND
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
– 11 –
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet CXA2560.PDF ] | |
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