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PDF CXA1910 Data sheet ( Hoja de datos )
| Número de pieza | CXA1910 | |
| Descripción | Dolby B Type Noise Reduction System with Playback Equalizer | |
| Fabricantes | Sony Corporation | |
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CXA1910Q
Dolby B Type Noise Reduction System with Playback Equalizer
For the availability of this product, please contact the sales office.
Description
The CXA1910Q is an IC designed for use in car
stereos. Functions include Dolby B type noise
reduction, playback equalizer amplifier and Music
sensor into a single chip.
40 pin QFP (Plastic)
Features
• Few external parts
• Forward/Reverse head switching
• Small package (40-pin QFP)
• Dolby B type noise reduction and playback
equalizer into a single chip
• Same pin configuration as Dolby B/C type noise
reduction system (CXA1911)
• Music sense level can be set by external
resistors/capacitors (2 modes).
• High-band cut filter frequency can be adjusted by
the external capacitance.
Applications
• Car stereos
• Stereo cassette deck players (playback only)
Absolute Maximum Ratings (Ta=25°C)
• Supply voltage
VCC
12
• Operating temperature Topr –40 to +85
• Storage temperature Tstg –65 to +150
• Allowable power dissipation
PD 430
V
°C
°C
mW
Recommended Operating Condition
Supply voltage
VCC 6.5 to 11
V
Structure
Bipolar silicon monolithic IC
∗ These ICs are 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 trade marks 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—
E93Z04-TE
1 page  
CXA1910Q
Pin
Symbol
No.
9 TC
22
DC
value
0.3V
Z (in)
—
15 MSMODE
17 NRMODE
18 DRSW
19 TAPESW
21 NRSW
—
—
16 MSSW — —
Equivalent circuit
Description
×2
20k
0.5µ 6µ
Vcc Time Constant pin for the level
detector
0.5µ
9
147
22
600k
15
17
147
18
19
21
GND
Vcc
Refer to Page 6.
50µ
GND
Vcc Refer to Page 6.
147
16
50µ 50µ
25 VCT
4.0V
—
4 NC
8
20
23
26
27
5 MSLPF
——
4.0V 100k
30k
45k
25
147
to VGS
30k
GND
Vcc
VCC/2 output
50µ
GND
No connection.
100 k
5
147
64p
—5—
VCC Capacitance connection for
adjusting the MS LPF time
constant.
GND
5 Page 
CXA1910Q
Operation mode control (INSW, AUXSW, TAPESW, DRSW, NRSW, MSSW, MODESW)
The CXA1910Q has built in electronic switch circuits and the operations are controlled by the direct current
applied to each SW pin. The operation mode state for each switch is shown in the table below.
SW
NRSW
TAPESW
DRSW
NRMODE
MSSW
MSMODE
Function for Low input
NR OFF
70µs
PB FWD
DOLBY B
MS OFF
G2 (NOR) MODE
Function for High input
NR ON
120µs
PB RVS
NR OFF
MS ON
G1 (FF) MODE
Click noise can be reduced by the external CR time constant circuit for NR SW switching.
—11—
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet CXA1910.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CXA1910 | Dolby B Type Noise Reduction System with Playback Equalizer | Sony Corporation |
| CXA1910Q | Dolby B Type Noise Reduction System with Playback Equalizer | Sony Corporation |
| CXA1911 | Dolby B/C Type Noise Reduction System with Playback Equalizer | Sony Corporation |
| CXA1911Q | Dolby B/C Type Noise Reduction System with Playback Equalizer | Sony Corporation |
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