NJU8402M NJRC [New Japan Radio], NJU8402M Datasheet

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NJU8402M

Manufacturer Part Number
NJU8402M
Description
DIGITAL TO ANALOG CONVERTER FOR STEREO AUDIO
Manufacturer
NJRC [New Japan Radio]
Datasheet
Converter for stereo audio. It consists of Serial Audio Data
Interface, Digital Interpolation Filter,
Buffer Amp, System Controller for status control. It
operates on single +5V power supply. Furthermore, it
accepts 16-bit input audio data length
supports I
and other digital audio applications.
GENERAL DESCRIPTION
FEATURES
BLOCK DIAGRAM
LRCK
BCLK
The NJU8402 is a 16-bit delta-sigma Digital-to-Analog
Therefore, the NJU8402 is suitable for CD, MD, DAT
Sample Rate ( fs ) : 50kHz ( Maximum )
Signal-to-Noise Ratio : 94dB
Input Audio Data Length : 16bits or 18bits
Single ended Analog Output
Internal SC type Low Pass Filter
Operating Voltage +5V 5%
Package Outline DIP16 / DMP16
DIN
type 1bit stereo DAC
DIGITAL TO ANALOG CONVERTER
2
S serial data format and LSB justified.
Serial Audio
Data Interface
FOR STEREO AUDIO
Digital
Interpolation
Filter
System
Controller
Modulator, SC LPF,
or 18-bit, and
Modulator
Modulator
VCOML
AOUTL
PACKAGE OUTLINE
PIN CONFIGURATION
DATA
MCKI
NJU8402D
REQ
AV
SCK
V
SC
LPF
SC
LPF
DD
DD
1
2
3
4
5
6
7
8
LPF
LPF
PRELIMINARY
16
15
14
13
12
10
11
9
NJU8402
V
BCLK
LRCK
DIN
RST
AOUTR
VCOM
AV
NJU8402M
SS
AOUTL
VCOML
AOUTR
VCOMR
SS
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NJU8402M Summary of contents

Page 1

... DIN Serial Audio BCLK Data Interface LRCK PACKAGE OUTLINE Modulator, SC LPF, or 18-bit, and PIN CONFIGURATION AOUTL VCOML Modulator Digital Interpolation Filter Modulator System Controller NJU8402 PRELIMINARY NJU8402D NJU8402M MCKI 2 15 BCLK SCK 3 14 LRCK DATA 4 13 DIN REQ 5 ...

Page 2

NJU8402 TERMINAL DESCRIPTION PIN INPUT SYMBOL No. /OUTPUT MCKI I 13 DIN I 14 LRCK I 15 BCLK I 3 SCK I 4 DATA I 5 REQ ...

Page 3

FUNCTION DESCRIPTION (1-1) Analog Audio Signal Output Analog signal output is biased in the chip and the maximum amplitude is 0.56 switched capacitor Low Pass Filter is so effective that the external Low Pass Filters are required only 2- pole ...

Page 4

NJU8402 (1-5) Control Register The Control Register controls NJU8402 operation using the serial interface. The SCK terminal is the data sift clock, the REQ terminal is data request signal, the DATA terminal is the serial data input. The control data ...

Page 5

ABSOLUTE MAXIMUM RATING PARAMETER DIGITAL Power Supply ANALOG Input Voltage Operating Temperature Storage Temperature Power Consumption RECOMMENDATION OPERATION CONDITION PARAMETER DIGITAL Power Supply ANALOG SYMBOL CONDITIONS V 0.3 to+7 0.3 to +7.0 DD ...

Page 6

NJU8402 ELECTRICAL CHARACTERISTICS ANALOG AC CHARACTERISTICS (The case without the report Ta=25℃,V PARAMETER SYMBOL Resolution S/N Dynamic Range THD+N Channel Separation Differential Gain Between Channels Gain Drift Maximum Output Voltage Bias Output Load Resistance Output Load Capacitance BLOCK DIAGRAM FOR ...

Page 7

DIGITAL INTERPOLATION FILTER CHARACTERISTICS PARAMETER SYMBOL Band Pass PB Rejection Band SB Rejection Band Quantity SA Note :Band Pass and Rejection Band are proportioned to fs. PB=0.4535 fs,SB=0.5465 fs DIGITAL ANALOG LOW PASS FILTER CHARACTERISTIC PARAMETER SYMBOL Frequency Response FR ...

Page 8

NJU8402 DIGITAL AC CHARACTERISTICS Master Clock & Reset PARAMETER Frequency MCKI Pulse Width High-Level Pulse Width Low-Level Reset Low Level Width Digital Audio Signal Interface PARAMETER Audio DAC Sampling Late Audio Data Setup Time Audio Data Hold Time BLCK Period ...

Page 9

TIMING CHART Master Clock & Reset MCKI RSTX Digital Audio Signal Interface BCLK INPUT LRCK INPUT DIN Control Register Interface t RQS REQ t t SCL SCH SCK t SCK DATA t t DAS DAH Input Signal Rise and Fall ...

Page 10

NJU8402 APPLICATION CIRCUITS DIN Digital Audio Data LRCK ( bits) BCLK SCK REQ MCK & MCKI 8 bits Serial Control RSTX DATA - 10 - Two-pole LPF 2.2uF 20k AOUTL OP:NJM5532 VCOML 10uF NJU8402 AOUTR VCOMR 10uF AVDD ...

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