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PDF CXA1563M Data sheet ( Hoja de datos )
| Número de pieza | CXA1563M | |
| Descripción | Dolby B-C Type Noise Reduction System with Built-in S type Switch | |
| Fabricantes | Sony Corporation | |
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CXA1563M/S
Dolby∗ B-C Type Noise Reduction System with Built-in S type Switch
Description
The CXA1563M/S is a bipolar IC incorporating
dual channel Dolby B-C type noise reduction (NR)
system and Dolby S type switch. Dolby B-C-S type
stereo system is completed by using this IC in
conjunction with two CXA1417S or two CXA1417Q.
A reduction in the number of external parts and
small package have been achived due to the fact
that the spectral skewing circuits are all on-chip.
Features
• Few external parts
• Spectral skewing circuit are on-chip
• NR ON/OFF, REC/PB, MPX filter ON/OFF,
Dolby S type switches
• Small package (28-pin SOP, 28-pin SDIP)
• Low current consumption 13mA Typ.
(power supply ±6V)
• Dual channel processors
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
• Supply voltage
• Operating temperature
• Storage temperature
• Allowable power dissipation
VCC
Topr
Tstg
PD
17
–40 to +85
–65 to +150
600 (SOP)
1200 (SDIP)
CXA1563M
28 pin SOP (Plastic)
V
°C
°C
mW
mW
CXA1563S
28 pin SDIP (Plastic)
∗ 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–
E93506C5X-ST
1 page  
Pin
No.
Symbol
Z: Imp
VDC (V)
11,
18
REC OUT
0
VCT
12 SSW
——
13 NRSW
—
—
14 VEE
15 VCC
VEE
VCC
16 MODE
—
—
28 VCT
0 VCT
CXA1563M/S
Equivalent circuit
VCC
Description
200 Recording output pin
Reference level
200 = –6dBm
40µA
VEE
VCC
6k 6k
VCT
Dolby S type switching
pin
H or Open: B-C type
L : S type
VEE
VCC
50µA
22k
50k
NR control pin
H: C type
M: B type
L: NR OFF
VEE
50µA
VCC
22k
50k
Dual power supply: VEE
Single power supply:
GND pin
VCC
MODE control pin
H: REC (Filter ON)
M: REC (Filter OFF)
L: PB
–5–
VEE
Dual power supply: GND
Single power supply:
VCC/2
5 Page 
CXA1563M/S
4) Reference level
The CXA1563M/S Dolby level is –6dBm (388mVrms), and is measured at the recording output pin (REC
OUT) in the NR OFF mode. The reference level of the recording input pin (LINE IN), playback input pin (PB
IN) and line output pin (LINE OUT) are defined as the levels which provide Dolby level at the recording output
pin in NR OFF mode.
5) MPX Filter
The CXA1563M/S provides an MPX (FM multiplex) filter ON/OFF function.
Connect the MPX filter between MPX IN (Pins 4 and 21) and MPX OUT (Pins 5 and 20). In MPX ON mode,
the line input signal is fed to the NR processor via the MPX buffer amplifier and MPX filter. In MPX OFF
mode, the signal bypasses the buffer amplifier and filter, and is fed directly to the NR processor. The MPX
buffer amplifier gain is 10dB. The gain from LINE IN to LINE OUT is 19dB, and from MPX IN to LINE OUT it
is 13dB, for a deviation of 6dB. This means that if a filter with insertion loss of 4dB is used, there is no
fluctuation between MPX ON and MPX OFF.
6) Notes on Operation
If the CXA1563M/S is used without being connected to the CXA1417S/Q encoder unit, SIN (Pins 8 and 21)
must be connected to GND for dual power supply, and to VCT for single power supply. There is a risk of
misoperation if the SIN pins are left open during use.
– 11 –
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet CXA1563M.PDF ] | |
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