D/A Converter. ET4344 Datasheet

ET4344 Converter. Datasheet pdf. Equivalent

ET4344 Datasheet
Recommendation ET4344 Datasheet
Part ET4344
Description 10-pin 24-Bit 192kHz Stereo D/A Converter
Feature ET4344; Etek Microelectronics ET4344 10-pin, 24-Bit, 192kHz Stereo D/A Converter General Description The E.
Manufacture Etek Microelectronics
Datasheet
Download ET4344 Datasheet




Etek Microelectronics ET4344
Etek
Microelectronics
ET4344
10-pin, 24-Bit, 192kHz Stereo D/A Converter
General Description
The ET4344 family members are complete, stereo digital-to-analog output systems including
interpolation,multi-bit D/A conversion and output analog filtering in a 10-pin package. The ET4344/5/6/8 support
all major audio data interface formats, and the individual devices differ only in the supported interface format.
The ET4344 family is based on a fourth order multi-bit delta-sigma modulator with a linear analog low-pass
filter. This family also includes auto-speed mode detection using both sample rate and master clock ratioas a
method of auto-selecting sampling rates between 2kHz and 200kHz.
The ET4344 family contains on-chip digital de-emphasis, operates from a single +3.3V or +5V power supply,
and requires minimal support circuitry. These features are ideal for DVD players & recorders, digital televisions,
home theater and set top box products, and automotive audio systems.
The ET4344 family is available in a 10-pin MSOP package in both Commercial (-10 to +85 °C) and
Automotive grades (-40 to +85 °C).
Features
z Multi-bit Delta-Sigma Modulator
z 24-bit Conversion
z Automatically Detects Sample Rates up to 192kHz.
z 105 dB Dynamic Range
z -90 dB THD+N
z Low Clock-Jitter Sensitivity
z Single +3.3V or +5V Power Supply
z Filtered Line-Level Outputs
z On-chip Digital De-emphasis
z Popguard™ Technology
z PackageMSOP10ET4344U
Rev 1.0 2009-02-27
1/16



Etek Microelectronics ET4344
Pin Configuration
ET4344
Pin Function
Pin No.
1
Pin Name
SDIN
2 DEM /SCLK
3 LRCK
4 MCLK
5 VQ
6 FILT+
7 AOUTL
8 GND
9 VA
10 AOUTR
Pin Description
Serial Audio Data Input (Input) - Input for two’s complement serial audio data.
De-Emphasis/External Serial Clock Input (Input) - used for de-emphasis filter
control or external serial clock input.
Left Right Clock (Input) - Determines which channel, Left or Right, is currently
active on the serial audio data line.
Master Clock (Input) - Clock source for the delta-sigma modulator and digital
filters.
Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.
Positive Voltage Reference (Output) - Positive reference voltage for the internal
sampling circuits.
Left Channel Analog Output (Output) - The full scale analog output level is
specified in the Analog Characteristics specification table.
Ground (Input) - ground reference.
Analog Power (Input) - Positive power for the analog and digital sections.
Right Channel Analog Output (Output) - The full scale analog output level is
specified in the Analog Characteristics specification table.
Rev 1.0 2009-02-27
2/16



Etek Microelectronics ET4344
Block Diagram
ET4344
Functional Description
The ET4344 family accepts data at standard audio sample rates including 48, 44.1 and 32kHz in SSM, 96,
88.2and 64kHz in DSM, and 192, 176.4 and 128kHz in QSM. Audio data is input via the serial data input pin
(SDIN).The Left/Right Clock (LRCK) determines which channel is currently being input on SDIN, and the
optional Serial Clock (SCLK) clocks audio data into the input data buffer. The ET4344/5/6/8 differ in serial data
formats as shown in Figures1-4.
Master Clock
MCLK/LRCK must be an integer ratio as shown in Table1. The LRCK frequency is equal to Fs, the
frequency at which words for each channel are input to the device. The MCLK-to-LRCK frequency ratio and
speed mode is detected automatically during the initialization sequence by counting the number of MCLK
transitions during a single LRCK period and by detecting the absolute speed of MCLK. Internal dividers are set to
generate the proper clocks. Table1 illustrates several standard audio sample rates and the required MCLK and
LRCK frequencies. Please note there is no required phase relationship, but MCLK, LRCK and SCLK must be
synchronous.
LRCK
(kHz)
32
44.1
48
64
88.2
96
128
176.4
192
64x
-
-
-
-
-
-
8.1920
11.2896
12.2880
96x
-
-
-
-
-
-
12.2880
16.9344
18.4320
128x
-
-
-
8.1920
11.2896
12.2880
-
22.5792
24.5760
192x
-
-
-
12.2880
16.9344
18.4320
-
33.8680
36.8640
MCLK (MHz)
256x 384x
8.1920 12.2880
11.2896 16.9344
12.2880 18.4320
--
22.5792 33.8680
24.5760 36.8640
32.7680 49.1520
--
--
512x
-
22.5792
24.5760
32.7680
-
-
-
-
-
768x
-
33.8680
36.8640
49.1520
-
-
-
-
-
1024x
32.7680
45.1580
49.1520
-
-
-
-
-
-
1152x
36.8640
-
-
-
-
-
-
-
-
Mode
QSM
DSM
Table 1. Common Clock Frequencies
SSM
Rev 1.0 2009-02-27
3/16







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)