DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD6379, 6379A, 6379L, 6379AL
2-CHANNEL 16-BIT D/A CONVERTER FOR AUDIO APPLICATION
The
µ
PD6379 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
µ
PD6376 but they
are more compact and require fewer external components than the
µ
PD6376. In addition, low-voltage models, the
µ
PD6379L 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 V
DD
= +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
µ
PD6379L, 6379AL at V
DD
= +3.3 V)
LRCK
Supply voltage
+3.3 V (V
DD
= +3.0 to 5.5 V)
+5.0 V (V
DD
= +4.5 to 5.5 V)
LRCK = L
when L-ch data is input
LRCK = H
when L-ch data is input
µ
PD6379L
µ
PD6379
µ
PD6379AL
µ
PD6379A
• 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
µ
PD6379, 6379A, 6379L, 6379AL
ORDERING INFORMATION
Part number
Package
8-pin plastic SOP (5.72 mm (225))
8-pin plastic SOP (5.72 mm (225))
8-pin plastic SOP (5.72 mm (225))
8-pin plastic SOP (5.72 mm (225))
µ
PD6379GR
µ
PD6379LGR
µ
PD6379AGR
µ
PD6379ALGR
BLOCK DIAGRAM
REF
L. OUT
Main DAC
Shift register latch
LRCK
CLK
Timing
generator
Sub DAC
GND
Sub DAC
SI
Main DAC
R. OUT
V
DD
2
Data Sheet S11588EJ4V0DS00
µ
PD6379, 6379A, 6379L, 6379AL
PIN CONFIGURATIONS (Top View)
8-pin plastic SOP (5.72 mm (225))
•
µ
PD6379GR, 6379LGR
LRCK
SI
CLK
V
DD
1
2
3
4
8
7
6
5
L. OUT
GND
REF
R. OUT
•
µ
PD6379AGR, 6379ALGR
R. OUT
REF
GND
L. OUT
1
2
3
4
8
7
6
5
V
DD
CLK
SI
LRCK
Remark
The pin configuration of the
µ
PD6379 and 6379L is different from that of the
µ
PD6379A and 6379AL.
Data Sheet S11588EJ4V0DS00
3
µ
PD6379, 6379A, 6379L, 6379AL
1.
PIN FUNCTIONS
Table 1-1 Pin Functions
Pin No.
µ
PD6379,
6379L
1
µ
PD6379A,
6379AL
5
Name
Symbol
I/O
Function
Left/Right Clock
LRCK
Input
Input pin to identify left or right input data.
µ
PD6379, 6379L: Input “L” to this pin when
inputting L-ch data to SI pin.
µ
PD6379A, 6379AL: Input “H” to this pin when
inputting L-ch data to SI pin.
2
6
Serial Input
SI
Input
Serial data input pin.
Input data on 2’s complement, MSB first, and
backward justification.
3
4
5
6
7
8
7
8
1
2
3
4
Clock
Supply Voltage
R-ch Output
Reference Voltage
Ground
L-ch Output
CLK
V
DD
R. OUT
REF
GND
L. OUT
Input
–
Output
–
–
Output
Serial input data read clock (bit clock) input pin
Positive power supply pin
Right analog signal output pin
Reference voltage pin. Connect this pin to GND
through capacitor.
GND pin
Left analog signal output pin
4
Data Sheet S11588EJ4V0DS00
µ
PD6379, 6379A, 6379L, 6379AL
2.
ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS (T
A
= 25
°
C)
Parameter
Supply voltage
Input voltage
Output voltage
Permissible package
power dissipation
Operating ambient temperature
Storage temperature
Symbol
V
DD
V
I
V
O
P
D
Ratings
– 0.3 to +7.0
– 0.3 to V
DD
+ 0.3
– 0.3 to V
DD
+ 0.3
220 (T
A
= 75 ˚C)
Unit
V
V
V
mW
°C
°C
T
A
T
stg
–20 to +75
–40 to +125
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
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