Philips ne5241 DATASHEETS
Philips Semiconductors Product specification
NE5241Dolby ADM digital audio decoder
1
March 19, 1992 853-1602 06126
DESCRIPTION
The NE5241 is a complete stereo digital to audio converter for the
Dolby ADM digital audio system, which allows CD quality stereo
audio to be delivered with data rates on the order of 400 to 600kb/s.
The NE5241 is intended for use in high quality consumer digital
audio equipment for the reproduction of broadcast (or pre-recorded)
digital audio. The IC contains channel de-multiplexing data input
latches, control signal filter drivers and buffers, variable gain
integrators, and variable de-emphasis filters. Precision, temperature
compensated voltage reference circuitry assures accurate
performance over temperature. The IC is implemented in a bipolar
process to achieve low noise, low distortion, and wide dynamic
range. The NE5241 is an improved version of the NE5240, which
has been discontinued.
Note:
The NE5241 is available only to licensees of Dolby Laboratories Licensing Corporation,
from who licensing and applications information must be obtained. Dolby is a registered
trademark of Dolby Laboratories Licensing Corporation, San Francisco, California.
APPLICATIONS
•High quality digital audio transmission systems
•Pre-recorded digital audio
•Satellite delivered digital audio
•Cable TV delivered digital audio
•Microwave delivered digital audio
•Terrestrial delivered digital audio
•Digital audio for advanced television sound
PIN CONFIGURATION
N, D Packages
MULTI OUT 1
V
CC
VARZ 1
OUT 1
TOP VIEW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
24
23
22
21
20
19
18
17
16
15
25
26
27
28
FEEDBACK 1
INT IN 1
EM FILT IN 1
EM FILT OUT 1
SS FILT IN 1
SS FILT OUT 1
V
DD
SS
AD
EM
MULTI OUT 2
A
GND
VARZ 2
OUT 2
FEEDBACK 2
INT IN 2
EM FILT IN 2
EM FILT OUT 2
SS FILT IN 2
SS FILT OUT 2
D
GND
REX
V
REF
CK
SR01021
Figure 1. Pin Configuration
FEATURES
•Wide dynamic range: >95dB
•Low distortion: <0.1% @ 1kHz, 0dB
•TTL, CMOS compatible logic inputs
•Wide bandwidth: DC to > 20kHz
•Complete decoder implementation in one IChip
ORDERING INFORMATION
DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #
28-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C NE5241N SOT117-2
28-Pin Small Outline Large (SOL) Package 0 to +70°C NE5241D SOT136-1
ABSOLUTE MAXIMUM RATINGS
SYMBOL PARAMETER RATING UNIT
V
CC
Analog supply voltage +15 V
V
DD
Logic supply voltage +7 V
T
A
Operating ambient temperature range 0 to +70 °C
T
STG
Storage temperature range –65 to +150 °C
T
J
Junction temperature –65 to +150 °C
T
SOLD
Lead temperature (soldering 60 sec) +300 °C
θ
JA
Thermal impedance
N package
D package
48
70
°C/W
°C/W
Philips Semiconductors Product specification
NE5241Dolby ADM digital audio decoder
March 19, 1992
2
PIN DESCRIPTIONS
PIN # SYMBOL DESCRIPTION
1 MULTI OUT 1 Multiplier output, channel 1
2 V
CC
Analog supply voltage
3 VARZ 1 Variable impedance, channel 1
4 OUT 1 Main output, channel 1
5 FEEDBACK 1 Summing amp input, channel 1
6 INT IN 1 Integrator amp input, channel 1
7 EM FILTER IN 1 Emphasis filter buffer input, channel 1
8 EM FILTER OUT 1 Emphasis filter driver output, channel 1
9 SS FILTER IN 1 Step-size filter buffer input, channel 1
10 SS FILTER OUT 1 Step-size filter driver output, channel 1
11 V
DD
Logic supply voltage
12 SS Step-size data input
13 AD Audio data input
14 EM Emphasis data input
15 CK Data clock input
16 V
REF
Reference voltage bypass
17 REX Variable impedance reference resistor
18 D
GND
Digital ground
19 SS FILTER OUT 2 Step-size filter driver output, channel 2
20 SS FILTER IN 2 Step-size filter buffer input, channel 2
21 EM FILTER OUT 2 Emphasis filter driver output, channel 2
22 EM FILTER IN 2 Emphasis filter buffer input, channel 2
23 INT IN 2 Integrator amp input, channel 2
24 FEEDBACK 2 Summing amp input, channel 2
25 OUT 2 Main output, channel 2
26 VARZ 2 Variable impedance, channel 2
27 A
GND
Analog ground
28 MULT OUT 2 Multiplier output, channel 2
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