UPD6379A NEC, UPD6379A Datasheet

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UPD6379A

Manufacturer Part Number
UPD6379A
Description
2-CHANNEL 16-BIT D/A CONVERTER FOR AUDIO APPLICATION
Manufacturer
NEC
Datasheet

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Document No. S11588EJ4V0DS00 (4th edition)
Date Published November 1999 N CP(K)
Printed in Japan
converters employ the resistor string conversion method which has been tested by existing model PD6376 but they
are more compact and require fewer external components than the PD6376. In addition, low-voltage models, the
systems.
FEATURES
• Resistor string conversion method
• 0-point digital shift circuit
• Signal processing format for 2’s complement, MSB first, and backward justification data accommodated
• Left and right in-phase output
• High performance (at V
• Low-voltage models available
• Bipolar LR clock (LRCK)
• Low power dissipation: 10 mW TYP.
• Few external components
• Small package: 8-pin plastic SOP (5.72 mm (225))
PD6379L and 6379AL (minimum operating supply voltage = +3.0 V) are also available for applications in portable
The PD6379 and 6379A are 2-channel 16-bit D/A converters for digital audio signal demodulation. These D/A
4 oversampling
Sampling frequency: 200 kHz MAX.
S/N ratio: 100 dB TYP.
Dynamic range: 96 dB TYP.
(with PD6379L, 6379AL at V
Internal output operational amplifier
Only one electrolytic capacitor required for smoothing reference voltage, instead of two capacitors required by
existing D/A converters
2-CHANNEL 16-BIT D/A CONVERTER FOR AUDIO APPLICATION
Supply voltage
+3.3 V (V
+5.0 V (V
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.
DD
DD
= +3.0 to 5.5 V)
= +4.5 to 5.5 V)
PD6379, 6379A, 6379L, 6379AL
DD
LRCK
= +5.0 V)
DD
The mark
when L-ch data is input
= +3.3 V)
DATA SHEET
LRCK = L
PD6379L
PD6379
shows major revised points.
when L-ch data is input
MOS INTEGRATED CIRCUIT
LRCK = H
PD6379AL
PD6379A
©
1996

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UPD6379A Summary of contents

Page 1

... 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) ...

Page 2

ORDERING INFORMATION Part number PD6379GR 8-pin plastic SOP (5.72 mm (225)) PD6379LGR 8-pin plastic SOP (5.72 mm (225)) PD6379AGR 8-pin plastic SOP (5.72 mm (225)) PD6379ALGR 8-pin plastic SOP (5.72 mm (225)) BLOCK DIAGRAM LRCK CLK SI 2 PD6379, 6379A, ...

Page 3

PIN CONFIGURATIONS (Top View) 8-pin plastic SOP (5.72 mm (225)) • PD6379GR, 6379LGR LRCK SI CLK V DD • PD6379AGR, 6379ALGR R. OUT REF GND L. OUT Remark The pin configuration of the PD6379 and 6379L is different from that ...

Page 4

... Serial input data read clock (bit clock) input pin V – Positive power supply pin DD R. OUT Output Right analog signal output pin REF – Reference voltage pin. Connect this pin to GND through capacitor. GND – GND pin L. OUT Output Left analog signal output pin Data Sheet S11588EJ4V0DS00 Function ...

Page 5

ELECTRICAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS (T Parameter Symbol Supply voltage Input voltage Output voltage Permissible package power dissipation Operating ambient temperature Storage temperature Caution Exposure to Absolute Maximum Ratings for extended periods may affect device reliability; exceeding the ratings ...

Page 6

PD6379, 6379A RECOMMENDED OPERATING CONDITIONS Parameter Symbol Supply voltage V DD Logic input voltage (HIGH Logic input voltage (LOW Operating ambient temperature T A Output load resistance R L Conversion frequency f S Clock frequency f ...

Page 7

PD6379L, 6379AL RECOMMENDED OPERATING CONDITIONS Parameter Symbol Supply voltage V DD Logic input voltage (HIGH Logic input voltage (LOW Operating ambient temperature T A Output load resistance R L Conversion frequency f S Clock frequency f ...

Page 8

Timing Chart CLK LSB MSB LRCK (L-ch) ( PD6379A, 6379AL) LRCK (L-ch) ( PD6379, 6379L) L. OUT R. OUT t t SCK SCK CLK PD6379, 6379A, 6379L, 6379AL LSB ...

Page 9

APPLICATION CIRCUIT EXAMPLE PD6379 PD6379A PD6379L PD6379AL Signal processor LRCKO LRCK L.OUT SO SI GND 47 + BCKO CLK REF V R.OUT 0 PD6379, 6379A, 6379L, 6379AL + – ...

Page 10

... Make sure that the delimiter of each bit of the data (SI) and the changing timing of LRCK coincide with the falling edge of CLK. • necessary that 16 clocks be input during 1 sample data period (16 bits). Make sure that the time width of 1 bit coincides with one cycle of the clock. ...

Page 11

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 ...

Page 12

... LRCK ( PD6379, 6379L) LRCK ( PD6379A, 6379AL) L.OUT R.OUT (3) Countermeasures against shock noise It is recommended that a mute circuit be connected to the next stage of the D/A converter mute circuit is not provided, shock noise may occur when power is applied. 12 PD6379, 6379A, 6379L, 6379AL LSB MSB 4 ...

Page 13

PACKAGE DRAWING 8-PIN PLASTIC SOP (5.72 mm (225 NOTE Each lead centerline is located within 0. its true position (T.P.) at maximum material condition. PD6379, ...

Page 14

RECOMMENDED SOLDERING CONDITIONS The following conditions must be met for soldering conditions of the product. For more details, refer to our document “SEMICONDUCTOR DEVICE MOUNTING TECHNOLOGY MANUAL” (C10535E). Please consult with our sales offices in case other soldering process ...

Page 15

... Similar precautions need to be taken for PW boards with semiconductor devices on it. 2 HANDLING OF UNUSED INPUT PINS FOR CMOS Note: No connection for CMOS device inputs can be cause of malfunction connection is provided to the input pins possible that an internal input level may be generated due to noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices ...

Page 16

... Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact an NEC sales representative in advance ...

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