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PDF CXA2511AQ Data sheet ( Hoja de datos )
| Número de pieza | CXA2511AQ | |
| Descripción | Dolby B-C Type Noise Reduction System with Playback Equalizer Amplifier | |
| Fabricantes | Sony Corporation | |
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CXA2511AQ
Dolby∗ B-C Type Noise Reduction System with Playback Equalizer Amplifier
Description
The CXA2511AQ is an IC designed for use in car
stereo cassette decks. Functions include Dolby B-C
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 type NR
system (CXA2510AQ) and no Dolby NR system
(CXA2509AQ)
• Dolby B-C type NR and playback equalizer
amplifier into a single chip
• FORWARD/REVERSE head select switch
• Two-system (TAPE/AUX) input select switch
• 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
7.8 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–
E96828-PS
1 page  
CXA2511AQ
Pin
No.
Symbol
Typical pin voltage
DC AC
I/O
I/O
resistance
Equivalent circuit
Vcc
Description
12 MSTC
147 853
— — — — 12
10k
Time constant for
detecting the
music signal
interval
DGND
GND
14 MSOUT
0.2V
when a
signal is
detected;
DVcc
when no
signal is
detected
—
O
—
DVcc
100k
147
14
Vcc
Music sensor
output
DGND
GND
15 NRMODE
17 INSW
0.0V
when
open
15 1.1k
— I 100kΩ 17
21 100k
21 MSSW
16 NRSW
18 TAPESW
0.0V
when
open
16 1.1k
— I 100kΩ 18
19 100k
19 DRSW
Dolby NR mode control
Vcc Low (open):
Dolby B type NR
High: Dolby C type NR
DGND
GND
Line amplifier input
select control
Low (open): TAPEIN
High: AUXIN
Music sensor control
Low (open):
MS ON
High: MS OFF
Dolby NR control
Vcc Low (open):
NR OFF
High: NR ON
DGND
GND
Playback equalizer
amplifier control
Low (open): 120µs
High: 70µs
Head select control
Low (open):
FORWARD
High: REVERSE
–5–
5 Page 
Application Circuit 1
CXA2511AQ
R12 R14
300k 33k
C7
0.01µ
R9
18k
R11
12k
GND
AUXIN2 LINEOUT2
GND
GND GND
C10 C12 R15 C15 C17
2.2µ 2.2µ 20k 2.2µ 0.1µ
C19
0.068µ
RVS2
FWD2
FWD1
RVS1
30 29 28 27 26 25 24 23 22 21
C4 R6
470p 180
R4
100k
C3 R3
470p 100k
GND
GND
C5
22µ
C2 R2
470p 100k
R1
100k
C1 R5
470p 180
PBFB2
31
PBRIN2
32
PBREF2
33
PBFIN2
34
VCT
35
PBGND
36
PBFIN1
37
PBREF1
38
PBRIN1
39
PBFB1
40
120µ/70µ
×1
F2
VCT
F1
×1
120µ/70µ
1234
NR
OFF/
MSMODE
20
B/C DRSW
19
T2
NR BIAS
MS MODE
TAPESW
18
TAPE/AUX
TAPE EQ
FWD/RVS
VCC
LPF
INSW
17
NRSW
NR MODE 16
NRMODE
15
MS ON/
OFF
R19
MSOUT 100k
DET
14
F3
T1
OFF/
B/C
NR
DGND
13
MSTC
12
G1FB
11
C22
0.1µ
R18
1MEG
56
78
9 10
From
Microcomputer
DVCC
To Microcomputer
DGND
GND
R8
18k
C6
0.01µ
R10
12k
R7 R13
300k 33k
C9 C11 C13 C14 C16 C18
2.2µ 2.2µ 0.001µ 2.2µ 0.1µ 0.068µ
R16 R17
3.9k 39k
C20 C21
0.47µ 4.7n
GND
GND GND GND
AUXIN1 LINEOUT1
VCC C8
22µ
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 21 Páginas | |
| PDF Descargar | [ Datasheet CXA2511AQ.PDF ] | |
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