|
|
PDF QS7779CM Data sheet ( Hoja de datos )
| Número de pieza | QS7779CM | |
| Descripción | 3D Stereo Enhancement and 3D Virtual Stereo Surround with Dolby Pro Logic and Mixed DVD (AC-3) Decoder | |
| Fabricantes | Nippon Precision Circuits Inc | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de QS7779CM (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
NIPPON PRECISION CIRCUITS INC.
QS7779PM/CM
3D Stereo Enhancement and 3D Virtual Stereo Surround
with Dolby Pro Logic and Mixed DVD (AC-3) Decoder
OVERVIEW
The QS7779PM/CM is an audio processor IC which
implements a decoder for stereo matrix encoded
source materials such as the Dolby Surround Pro
Logic and mixed DVD (AC−3) with surround virtu-
alization using QSound™ technology developed and
licensed by QSound Labs, Inc. This chip produces
enhanced stereo sound for a stereo input signal and if
the input signal contains matrix encoded surround
sound, the chip decodes it and produces 3D virtual-
ized surround sounds with two speakers.
FEATURES
s Capable of decoding Dolby Surround materials
such as Dolby Pro Logic or other matrix surround
encoded materials (DVD/AC−3)
s Virtualized surround sound with two speakers
s 3D stereo sound enhancement
s Two enhanced levels
s Parallel and serial digital interface for mode con-
trol
• QS7779CM for I2C 2 control pins serial inter-
face (Data, Clock)
• QS7779PM for three-wire serial interface
(Data, Clock and Strobe)
s Supply voltage (analog): 5 to 13V
Supply voltage (digital): 4.5 to 5.5V
s 24-pin SSOP packaging
APPLICATIONS
s DVD, Laser disk player
s Audio systems including TV, Radio and VCR
s Computer-based multimedia products, including
sound cards and powered loudspeakers
PINOUT(Top view)
QS7779PM
QS7779CM
QXAC3
QXAC2
QXAC1
RIN
LIN
COUT
CIN
VREFIN
VREFOUT
VREF
GND
SPRD(SCL)
1
12
24 QXAC4
VCC
QXBC1
QXBC2
QXBC3
QXBC4
ROUT
LOUT
MUTE(STRB)
VDD
P/S
13 BYP(SDA)
QXAC3
QXAC2
QXAC1
RIN
LIN
COUT
CIN
VREFIN
VREFOUT
VREF
GND
SPRD(SCL)
1
12
24 QXAC4
VCC
QXBC1
QXBC2
QXBC3
QXBC4
ROUT
LOUT
MUTE
VDD
P/S
13 BYP(SDA)
Using these products does not require any Dolby certifications.
ORDERING INFORMATION
Device
QS7779PM
QS7779CM
Package
24-pin SSOP
24-pin SSOP
I2C bus is a registered tra d e m a r k of Philips Electronics N.V.
Dolby and the double-D symbol are registered trademarks of Dolby Laboratories Licensing Corporation.
NIPPON PRECISION CIRCUITS—1
1 page  
QS7779PM/CM
DC Electrical Characteristics
VCC = 9V, VDD = 5V, GND = 0V, Ta = 25 °C unless otherwise noted.
Parameter
Symbol
Condition
LIN, RIN analog input impedance
CIN analog input impedance
Reference voltage out
HIGH-level input voltage
L OW -level input voltage
Input leakage current
SDA, SCL input leakage current
(I2C input pin)
S DA LOW -level output voltage
Supply voltage (analog)
Supply voltage (digital)
Current consumption (analog)
Current consumption (digital)
Standby current (analog)
ZAIN1
ZAIN2
VREFOUT
V IH
V IL
IL E A K
IL O P E N V IN = 10V
VOL
VCC
VDD
IC C
ID D
IC C S AV E
Acknowledge signal out
IO L = 3mA
min
16
4
–
0.7 × VDD
–
–3
–3
0
5
4.5
–
–
–
Limits
typ
20
5
V C C /2
–
–
–
–
–
–
–
5
0.3
0.1
max
24
6
–
–
0.3 × VDD
3
3
0.4
13
5.5
6.5
0.5
0.2
Unit
kΩ
kΩ
V
V
V
µA
µA
V
V
V
mA
mA
mA
Noise/THD Characteristics
VCC = 9V, VDD = 5V, GND = 0V, Ta = 25 °C unless otherwise noted.
Parameter
Noise voltage
Noise voltage
THD
Symbol
Condition
NBYP
NQS
THDQS
BYP = HIGH (Bypass mode), A-wgt,
LOUT, RO U T
BYP = LOW (Qsurround mode),
SPRD = HIGH, A-wgt, LOUT, RO U T
LIN = RIN = 1VRMS, BYP = LOW (Qsur-
round mode), SPRD = HIGH, f = 1kHz
min
–
–
–
Limits
typ
10
20
–
Unit
max
2 0 µV R M S
4 0 µV R M S
0.1 %
NIPPON PRECISION CIRCUITS—5
5 Page 
QS7779PM/CM
NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to
improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for
the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits
are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision
Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.
The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or
malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter,
including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or
indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.
NIPPON PRECISION CIRCUITS INC.
NIPPON PRECISION CIRCUITS INC.
4-3, Fukuzumi 2-chome
Koto-ku, Tokyo 135-8430, Japan
Telephone: 03-3642-6661
Facsimile: 03-3642-6698
NC9817AE 1999.6
NIPPON PRECISION CIRCUITS—11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet QS7779CM.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| QS7779CM | 3D Stereo Enhancement and 3D Virtual Stereo Surround with Dolby Pro Logic and Mixed DVD (AC-3) Decoder | Nippon Precision Circuits Inc |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |