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Philips

NE5240 Datasheet Preview

NE5240 Datasheet

Dolby Digital Audio Decoder

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NE5240
Dolby Digital Audio Decoder
Preliminary Specification
DESCRIPTION
The NE5240 is a two channel decoder
for the Dolby Digital Audio System. *The
IC includes input latches to separate two
channels of audio and control data, a
precision internal voltage reference, and
digital/analog signal processing circuitry
for each channel. The IC design is imple-
mented in a bipolar process to achieve
low noise, low distortion, and wide dy-
namic range.
NOTE:
'Available only to licensees of Dolby Laboratories
Licensing Corporation, San Francisco, from whom
licensing and applications information must be ob·
tained. Dolby is a registered trademark of Dolby
Laboratories Licensing Corporation, San Francisco,
California.
FEATURES
• Wide dynamic range - 85dB
• Low distortion 0"05% @ 1kHz,
-10dB
• TTL and CMOS compatible logic
inputs
• Audio bandwidth - 30Hz to
15kHz
APPLICATIONS
• High quality digital transmission
of audio data
• Satellite reception
• Cable TV
• Microwave distribution systems
ORDERING INFORMATION
DESCRIPTION
28-Pin SO
28-Pin Plastic DIP
TEMPERATURE RANGE
o to +70°C
o to +70°C
ORDER CODE
NE5240D
NE5240N
PIN CONFIGURATION
N, 0 Packages
MULTOUT"
ANALOG
SUPPLY VOLT
VARIABLE
IMPEDANCE'
1
SUM NODE"
INTERNAL
AMPLIFIER'
SLIDING BAND
BUFFER IN"
SLIDING BAND
BUFFER OUT'
STEP SIZE
BUFFER IN'
STEP SIZE
BUFFER OUT'
LOGIC
SUPPLY
STEP SIZE
DATA IN
AUDIO
DATA IN
SLIDING BAND
DATA IN
5
23 ~J~~~~~
22 g~~~~~ ::'~D
21 g~~~~~ ~~p.
20 ru~~~~N"'
19 ru~~~6UT*"
DIGITALGND
1 EXT RES
REF VOLT
lOP VIEW
December 1988
115




Philips

NE5240 Datasheet Preview

NE5240 Datasheet

Dolby Digital Audio Decoder

No Preview Available !

Dolby Digital Audio Decoder
BLOCK DIAGRAM
Rl
UK
R2 R3
43K 360K
VDD
11
VDD
12
SSO
13
AD
14
SBO
INPUT
LOGIC
15
CK
DGNO
eX
18 19 21
NOTE:
One channel of the application shown with external components.
Preliminary Specification
NE5240
R15
5.1K
VOUT
CH.A
NE5240
REFERENCE
GENERATOR
VH REX
VR
Vl VREF
AGNO
Vee
17
16
....:!: C17
27 220!,F
R17
104K
26
VOUT
CH.B
December 1988
116


Part Number NE5240
Description Dolby Digital Audio Decoder
Maker Philips
Total Page 4 Pages
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