|
Details, datasheet, quote on part number:NE5241N
| |
Datasheet text preview:
Philips Semiconductors
Product specification
Dolby ADM digital audio decoder
NE5241
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.
PIN CONFIGURATION
N, D Packages
MULTI OUT 1 1 V CC 2 VARZ 1 3 OUT 1 4 FEEDBACK 1 5 INT IN 1 6 EM FILT IN 1 7 EM FILT OUT 1 8 SS FILT IN 1 9 SS FILT OUT 1 10 VDD 11 SS 12 AD 13 28 MULTI OUT 2 27 AGND 26 VARZ 2 25 OUT 2 24 FEEDBACK 2 23 INT IN 2 22 EM FILT IN 2 21 EM FILT OUT 2 20 SS FILT IN 2 19 SS FILT OUT 2 18 DGND 17 REX 16 VREF 15 CK TOP VIEW
APPLICATIONS
EM 14
· 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
SR01021
Figure 1. Pin Configuration
FEATURES
· Wide dynamic range: >95dB · Low distortion: 20kHz · Complete decoder implementation in one IChip
ORDERING INFORMATION
DESCRIPTION 28-Pin Plastic Dual In-Line Package (DIP) 28-Pin Small Outline Large (SOL) Package TEMPERATURE RANGE 0 to +70°C 0 to +70°C ORDER CODE NE5241N NE5241D DWG # SOT117-2 SOT136-1
ABSOLUTE MAXIMUM RATINGS
SYMBOL VCC VDD TA TSTG TJ TSOLD JA Analog supply voltage Logic supply voltage Operating ambient temperature range Storage temperature range Junction temperature Lead temperature (soldering 60 sec) Thermal impedance N package D package 48 70 °C/W °C/W PARAMETER RATING +15 +7 0 to +70 65 to +150 65 to +150 +300 UNIT V V °C °C °C °C
March 19, 1992
1
853-1602 06126
Philips Semiconductors
Product specification
Dolby ADM digital audio decoder
NE5241
PIN DESCRIPTIONS
PIN # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 SYMBOL MULTI OUT 1 VCC VARZ 1 OUT 1 FEEDBACK 1 INT IN 1 EM FILTER IN 1 EM FILTER OUT 1 SS FILTER IN 1 SS FILTER OUT 1 VDD SS AD EM CK VREF REX DGND SS FILTER OUT 2 SS FILTER IN 2 EM FILTER OUT 2 EM FILTER IN 2 INT IN 2 FEEDBACK 2 OUT 2 VARZ 2 AGND MULT OUT 2 Multiplier output, channel 1 Analog supply voltage Variable impedance, channel 1 Main output, channel 1 Summing amp input, channel 1 Integrator amp input, channel 1 Emphasis filter buffer input, channel 1 Emphasis filter driver output, channel 1 Step-size filter buffer input, channel 1 Step-size filter driver output, channel 1 Logic supply voltage Step-size data input Audio data input Emphasis data input Data clock input Reference voltage bypass Variable impedance reference resistor Digital ground Step-size filter driver output, channel 2 Step-size filter buffer input, channel 2 Emphasis filter driver output, channel 2 Emphasis filter buffer input, channel 2 Integrator amp input, channel 2 Summing amp input, channel 2 Main output, channel 2 Variable impedance, channel 2 Analog ground Multiplier output, channel 2 DESCRIPTION
March 19, 1992
2
Philips Semiconductors
Product specification
Dolby ADM digital audio decoder
NE5241
DC ELECTRICAL CHARACTERISTICS
All specifications are at TA=25°C, VDD=5V, VCC=12V. Test circuit Figure 1. SYMBOL VCC VDD ICC IDD VIH VIL IIH IIL tS tH IB PARAMETER Analog supply voltage Digital supply voltage Analog supply current Digital supply current HIGH level input voltage LOW level input voltage HIGH level input current LOW level input current Data setup time Data hold time Control signal buffer bias current Integrating amp gain Pins SS, AD, EM Pins SS, AD, EM = 2V Pins SS, AD, EM = 0.8V 150 150 10 22 30 1 1 2.0 0.8 10 5 TEST CONDITIONS LIMITS Min 10.8 4.7 Typ 12 5 25 12 Max 13.2 5.3 40 20 UNIT V V mA mA V V µA µA ns ns nA dB
AC ELECTRICAL CHARACTERISTICS
All specifications are at TA=25°C, VDD=5V, VCC=12V, Audio data rate = 204kHz. 0dB is defined as 0.775VRMS. Test circuit Figure 4. SYMBOL PARAMETER Output voltage (reference level)1 Channel balance (reference level)1 Channel balance change2 Channel balance change2 Step-size tracking Headroom4 Noise5 Noise5 Mute noise6 Dynamic range7 THD THD Total harmonic distortion1 Total harmonic distortion8 Variable de-emph calibration Freq. response error Freq. response error Freq. response error Dynamic offset, emphasis10 Dynamic offset, step-size11 Channel separation error9 0dB (ref level) +13dB (max level) 8kHz EM = 40% 2kHz EM = 10% 12kHz EM = 60% 15kHz EM = 70% AC measurement AC measurement 1kHz 1 1.8 2.3 2.5 20Hz 20kHz CCIR/ARM CCIR/ARM error3 Step-size tracking error3 20% < SS < 80% 10% < SS < 90% 20% < SS < 80% 10% < SS < 90% 13 80 89 93 98 0.8 0.13 0.2 0.2 0.25 0.5 43 39 75 0.2 0.5 1 1.5 2.3 2.5 30 24 % % dB dB dB dB dB dB dB 78 85 88 dBu dBu dBu TEST CONDITIONS LIMITS Min 6 Typ 4.5 0.2 0.2 0.4 0.5 1.0 Max 2.5 1.2 1.0 1.5 3.0 4.0 UNIT dBu dB dB dB dB dB
NOTES: Test patterns referred to are produced by the Dolby Cat. No. 346 ADM Test Data Generator. 1. Dolby ADM reference level, Dolby test pattern 00. This is 10dB below the nominal 100% modulation level. 2. The channel balance may change over the operating range. This specification is the channel balance change from the intial channel balance which was measured at reference level. 3. The gain should change by 36.12dB as the step-size data is changed from 20% to 80% duty cycle, or 48.16dB as the data changes from 10% to 90%. The tracking error is the amount by which the gain change deviates from the desired value. 4. This is headroom over Dolby ADM reference level. 5. Idling data patterns, Dolby test pattern 02 with respect to test 01. 6. Muted data patterns, Dolby test pattern 04. 7. Difference between output voltage plus headroom, and CCIR/ARM weighted mute noise level. 8. Test level is 13dB over Dolby ADM reference level. Dolby test pattern 08. 9. Measured at 8.00kHz, with emphasis data at 40% duty cycle. This may be trimmed to zero by adjusting the resistor at Pin 17. 10. Dolby test pattern 48 relative to test 00. Duty cycle alternates from 10 to 70%. 11. Dolby test pattern 49 relative to test 00. Duty cycle alternates from 10 to 70%. March 19, 1992 3
|
|
