CXA1917AS

Manufacturer Part NumberCXA1917AS
DescriptionDolby S type Noise Reduction Processor
ManufacturerSONY [Sony Corporation]
CXA1917AS datasheet
 
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Dolby S type Noise Reduction Processor
Description
The CXA1917AM/AS is a bipolar IC designed for
use in the Dolby S type noise reduction system (NR).
An external operational amplifier is required to
configure the decoder. The stereo Dolby B-C-S type
NR combines use of a CXA1563M/S and two
CXA1917AM/AS ICs.
Features
• Considerable reduction in the number of external parts
(half compared to CXA1417S/Q)
• The same Dolby level as that of CXA1560 series ICs (–6dBm)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
• Operating temperature
• Storage temperature
• Allowable power dissipation
Recommended Operating Conditions
Supply voltage
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.
CXA1917AM/AS
30 pin SOP (Plastic)
V
to V
17
CC
EE
Topr
–20 to +75
°C
Tstg
–65 to +150
°C
P
(CXA1917AM) 600
mW
D
(CXA1917AS) 1200
mW
V
4.5 to 6.5
CC
V
–4.5 to –6.5
EE
– 1 –
30 pin SDIP (Plastic)
V
V
V
E95Y15B74

CXA1917AS Summary of contents

  • Page 1

    ... Sony cannot assume responsibility for any problems arising out of the use of these circuits. CXA1917AM/AS 30 pin SOP (Plastic Topr –20 to +75 °C Tstg –65 to +150 °C P (CXA1917AM) 600 mW D (CXA1917AS) 1200 mW V 4 –4.5 to –6.5 EE – 1 – 30 pin SDIP (Plastic E95Y15B74 ...

  • Page 2

    CXA1917AM/AS ...

  • Page 3

    Pin Description Pin No. Symbol DCV (V) 1 HLSMP 0 2 MCTC –3.9 3 ZHSH 0 4 ZL2 0 (DCV values are for Vcc = 6.0V and V Equivalent Circuit 1. ...

  • Page 4

    Pin No. Symbol DCV (V) 5 LFIN 0 6 TCL1 –4.6 7 TCL2 –4.6 8 SCINH 0 Equivalent Circuit 10.2k GND V CC 1.5k 6 68k 300k 124k ...

  • Page 5

    Pin No. Symbol DCV (V) 9 FBOH 0 22 FBOL 0 10 TCF1H 0 11 TCF2H –4.6 18 TCF2L –4.6 12 TCS2H –4.6 20 TCS2L –4.6 Equivalent Circuit V 1. 5.1k VCT GND V 10 80k V V ...

  • Page 6

    Pin No. Symbol DCV (V) 13 TCS1H –4.6 14 VCT –6 6 IREF –4.8 19 TCF1L –4.6 Equivalent Circuit V 13 80k 26k V V 500 2k 14 500 GND V 1.5k ...

  • Page 7

    Pin No. Symbol DCV (V) 21 TCS1L –4.6 23 SCBOL 0 24 SCINL 0 25 RECOUT 0 28 MCBO ZHSL Equivalent Circuit 21 86k 70k 1.64MEG 500p 500 24 500 200 500 17.5k 20k 20k 25 47p ...

  • Page 8

    Pin No. Symbol DCV (V) 27 HLSOUT 0 29 MC3IN 0 30 MC4IN 0 Equivalent Circuit V 20k 500 11k 27 26 500 47p V V 22k 22k – 8 – CXA1917AM/AS Description ...

  • Page 9

    Electrical Characteristics (Ta = 25°C, Dolby level: –6dBm (= 388mVrms) at encoder input, Vcc = +6V, V Characteristics Operating voltage Current consumption Encoding characteristics (boost) (1) (2) (3) (4) (5) (6) (7) (8) Signal handling Total harmonic distortion S/N ratio ...

  • Page 10

    CXA1917AM/AS ...

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    CXA1917AM/AS ...

  • Page 12

    Notes on Application The CXA1917A is an encoding IC for the Dolby S type (NR). An external operational amplifier is required to configure the decoder circuit. The Dolby level voltage of this IC is designed to be –6dBm (388mVrms), which ...

  • Page 13

    B-C-S Type Switchable Stereo Processor Fig. 4 shows the stereo processor switchable to any B-C-S type mode. The operational amplifier is unnecessary, because the CXA1563 is used for a B-C type processor and S-type changeover switch is built in the ...

  • Page 14

    LINE OUT1 C13 1µ PBIN1 12 LINEIN1 11 VCT C11 C12 1µ 1µ C21 C22 1µ 1µ LINEIN2 21 PBIN2 22 C23 1µ LINEOUT2 13 C16 1µ Encoder Unit GND RECOUT ...

  • Page 15

    Example of Representative Characteristics Current consumption vs. Supply voltage 18 No signal – V – Supply voltage [mA Encoding characteristics + – 0dB ...

  • Page 16

    ... Package Outline Unit: mm CXA1917AM 30 1 SONY CODE EIAJ CODE JEDEC CODE CXA1917AS 30 1 SONY CODE EIAJ CODE JEDEC CODE 30PIN SOP(PLASTIC) + 0.4 18.8 – 0 1.27 0.45 ± 0.1 0.2 M PACKAGE STRUCTURE PACKAGE MATERIAL SOP-30P-L03 LEAD TREATMENT SOP030-P-0375 LEAD MATERIAL PACKAGE WEIGHT 30PIN SDIP (PLASTIC) + 0.4 26.9 – 0.1 ...