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PDF UPD6379GR Data sheet ( Hoja de datos )
| Número de pieza | UPD6379GR | |
| Descripción | 2-CHANNEL 16-BIT D/A CONVERTER FOR AUDIO APPLICATION | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD6379, 6379A, 6379L, 6379AL
2-CHANNEL 16-BIT D/A CONVERTER FOR AUDIO APPLICATION
The µPD6379 and 6379A are 2-channel 16-bit D/A converters for digital audio signal demodulation. These D/A
converters employ the resistor string conversion method which has been tested by existing model µPD6376 but they
are more compact and require fewer external components than the µPD6376. In addition, low-voltage models, the
µPD6379L and 6379AL (minimum operating supply voltage = +3.0 V) are also available for applications in portable
systems.
FEATURES
• Resistor string conversion method
• 0-point digital shift circuit
• × 4 oversampling
Sampling frequency: 200 kHz MAX.
• Signal processing format for 2’s complement, MSB first, and backward justification data accommodated
• Left and right in-phase output
• High performance (at VDD = +5.0 V)
S/N ratio: 100 dB TYP.
Dynamic range: 96 dB TYP.
• Low-voltage models available
• Bipolar LR clock (LRCK)
• Low power dissipation: 10 mW TYP.
(with µPD6379L, 6379AL at VDD = +3.3 V)
Supply voltage
LRCK
+3.3 V (VDD = +3.0 to 5.5 V)
+5.0 V (VDD = +4.5 to 5.5 V)
LRCK = L
when L-ch data is input
µPD6379L
µPD6379
LRCK = H
when L-ch data is input
µPD6379AL
µPD6379A
• Few external components
Internal output operational amplifier
Only one electrolytic capacitor required for smoothing reference voltage, instead of two capacitors required by
existing D/A converters
• Small package: 8-pin plastic SOP (5.72 mm (225))
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability
and additional information.
Document No. S11588EJ4V0DS00 (4th edition)
Date Published November 1999 N CP(K)
Printed in Japan
The mark shows major revised points.
©
1996
1 page  
µPD6379, 6379A, 6379L, 6379AL
2. ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS (TA = 25 °C)
Parameter
Supply voltage
Input voltage
Output voltage
Permissible package
power dissipation
Operating ambient temperature
Storage temperature
Symbol
VDD
VI
VO
PD
TA
Tstg
Ratings
– 0.3 to +7.0
– 0.3 to VDD + 0.3
– 0.3 to VDD + 0.3
220 (TA = 75 ˚C)
–20 to +75
–40 to +125
Unit
V
V
V
mW
°C
°C
Caution
Exposure to Absolute Maximum Ratings for extended periods may affect device reliability;
exceeding the ratings could cause permanent damage. The parameters apply independently. The
device should be operated within the limits specified under DC and AC Characteristics.
Data Sheet S11588EJ4V0DS00
5
5 Page 
µPD6379, 6379A, 6379L, 6379AL
• If the clock is also supplied to CLK while data is not sampled (refer to Fig. 4-1), make sure that the changing
timing of LRCK coincides with the falling edge (point A) of CLK after the LSB has been input.
Fig. 4-1 Input Timing Chart (1)
A
CLK
LSB
SI 16
Invalid
LRCK
1 sample data period
A
MSB
LSB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Invalid
MSB
1234
• If the clock is supplied to CLK only while data is sampled (refer to Fig. 4-2), set the changing timing of LRCK
in between the falling edge (point A) of CLK after the LSB has been input and the start of inputting the next
MSB (point B) (points A and B are included).
Fig. 4-2 Input Timing Chart (2)
A
CLK
LSB
SI 16 Invalid
B
1 sample data period
A
MSB
LSB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Invalid
B
MSB
1234
LRCK
Changing period of LRCK
Changing period of LRCK
Data Sheet S11588EJ4V0DS00
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet UPD6379GR.PDF ] | |
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