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XE3005/XE3006
6 APPLICATION INFORMATION
6.1 APPLICATION SCHEMATICS – XE3006
6.1.1 Typical Application schematic
GND
Vcc
Vcc
L=680µH
L
2µ2F
0.1µF
1µF
1µF
390kΩ
Sandman output
Master Clock
SPI
Serial Audio Interface
1
5
6
7
8
9
10
11
12
MCLK
SMAD
SMDA
VDD
NRESET
VSSA
VREG16
VREF
VSSA
VSSD
VREG11
AIN
23
22
21
16
14
13
MOSI
SS
SCK
MISO
SDI
SDO
BCLK
FSYNC
AOUTP
VDDPA
AOUTN
VSSPA
4
15
3
2
4µ7F
R
R
L
R=56Ω
lowpass filter,
Bluetooth™ voice application
MCLK = 2.048 MHz,
div_factor =1
XE3006
24
20
19
18
17
Figure 23: Typical Application with 3
rd
order LC output Filter
6.1.2 External components required for optimal performances
The following minimum set-up of external components is required:
• Capacitor for Vref: 1 µF
• Resistor for Vref: 390 kΩ
• Capacitor for VREG16: 1 µF
The low pass filter between the DAC output and the speaker depends on the CODEC settings and the speaker type.
