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PDF WM8523 Data sheet ( Hoja de datos )

Número de pieza WM8523
Descripción 24-bit 192kHz Stereo DAC
Fabricantes Wolfson Microelectronics 
Logotipo Wolfson Microelectronics Logotipo



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WM8523
24-bit 192kHz Stereo DAC with 2Vrms Ground Referenced Line Output
DESCRIPTION
The WM8523 is a stereo DAC with integral charge pump
and software control interface. This provides 2Vrms line
driver outputs using a single 3.3V power supply rail.
The device features ground-referenced outputs and the use
of a DC servo to eliminate the need for line driving coupling
capacitors and effectively eliminate power on pops and
clicks.
The device is controlled and configured either via the
I2C/SPI compliant serial control interface or a hardware
control interface.
The device supports all common audio sampling rates
between 8kHz and 192kHz using all common MCLK fs
rates. Master and Slave modes are available and de-
emphasis is also supported.
The WM8523 has a 3.3V tolerant digital interface, allowing
logic up to 3.3V to be connected.
The device is available in a 20-lead TSSOP package.
FEATURES
High performance stereo DAC with ground referenced line
driver
Audio Performance
106dB SNR (‘A-weighted’)
-89dB THD @ -1dBFS
Digital Volume control ranging from -100dB to +12dB
120dB mute attenuation
All common sample rates from 8kHz to 192kHz supported
I2C/SPI compatible and hardware control modes
Data formats: LJ, RJ, I2S, DSP
De-emphasis supported
Maximum 1mV DC offset on Line Outputs
Pop/Click suppressed Power Up/Down Sequencer
AVDD and LINEVDD +3.3V ±10% allowing single supply
20-lead TSSOP package
Operating temperature range: -40°C to 85°C
APPLICATIONS
Consumer digital audio applications requiring 2Vrms output
Set Top Box
Digital TV
DVD Players
Games Consoles
A/V Receivers
WOLFSON MICROELECTRONICS plc
Production Data, August 2013, Rev 4.2
Copyright 2013 Wolfson Microelectronics plc

1 page




WM8523 pdf
Production Data
PIN DESCRIPTION
PIN NO
NAME
TYPE
DESCRIPTION
WM8523
1
LINEVOUTL
Analogue Out
Left line output
2
CPVOUTN
Analogue Out
Charge Pump negative rail decoupling pin
3
CPCB
Analogue Out
Charge Pump fly back capacitor pin
4 LINEGND
Supply
Charge Pump ground
5
CPCA
Analogue Out
Charge Pump fly back capacitor pin
6 LINEVDD
Supply
Charge Pump supply
7 ZFLAG
Digital Out
Zero flag output
8 DACDAT
Digital In
Digital audio interface data input
9 LRCLK
Digital I/O
Digital audio interface left/right clock
10 BCLK
Digital I/O
Digital audio interface bit clock
11 MCLK
Digital In
Master clock
I2C SOFTWARE
MODE
SPI SOFTWARE
MODE
HARDWARE MODE
12 SDOUT/
DEEMPH
Digital I/O
I2C address select
bit[1]
Serial control interface
data output pin
0 – No de-emphasis
1 – De-emphasis
13
SDA/
AIFMODE0
Digital I/O
Internal pull-down
Serial control interface
data input pin
Serial control interface
data input pin
AIFMODE[1:0]
00 – LJ 24 bits
01 – I2S 24 bits
14
SCLK/
AIFMODE1
Digital I/O
Internal pull-down
Serial control interface
clock input pin
Serial control interface
clock input pin
10 – RJ 16 bits
11 – RJ 24 bits
15 C¯¯S/
M¯¯U¯T¯E¯
Digital In
I2C address select
bit[0]
Serial control interface
chip select
0 – Mute enabled
1 – Mute disabled
16 CIFMODE
Digital In
Tri-level
0 – I2C compatible
mode select
1 – SPI compatible
mode select
Z – Hardware mode
17 AGND
Supply
Analogue ground
18
VMID
Analogue Out
Analogue midrail decoupling pin
19 AVDD
Supply
Analogue supply
20
LINEVOUTR
Analogue Out
Right line output
Note: Tri-level pins which require the ‘Z’ state to be selected should be left floating (open)
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PD, Rev 4.2, August 2013
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WM8523 arduino
Production Data
CONTROL INTERFACE TIMING – I2C MODE
I2C mode is selected by driving the CIFMODE pin low.
WM8523
Figure 4 Control Interface Timing – I2C Control Mode
Test Conditions
LINEVDD=AVDD=2.97~3.63V, LINEGND=AGND=0V, TA=+25°C
PARAMETER
Program Register Input Information
SCLK Frequency
SCLK Low Pulse-Width
SCLK High Pulse-Width
Hold Time (Start Condition)
Setup Time (Start Condition)
Data Setup Time
SDA, SCLK Rise Time
SDA, SCLK Fall Time
Setup Time (Stop Condition)
Data Hold Time
Pulse width of spikes that will be suppressed
Table 3 Control Interface Timing – I2C Control Mode
SYMBOL
t1
t2
t3
t4
t5
t6
t7
t8
t9
MIN
TYP
MAX
UNIT
400 kHz
100 ns
100 ns
600 ns
600 ns
100 ns
300 ns
300 ns
600 ns
900 ns
2 8 ns
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PD, Rev 4.2, August 2013
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