Datasheet

APPLICATION INFORMATION
LRCKAD
BCKAD
DOUT1
DOUT2
DOUT3
SCKI
DIN1
DIN2
DIN3
DIN4
LRCKDA
BCKDA
MODE
Termination
OVF
RST MS/ADR0/MD0 MDO/ADR1/MD1 MDI/SDA/DEMP
MC/SCL/FMT
ZERO
VIN1+
VIN1-
VIN2+
VIN2-
VIN3+
VIN3-
VIN4+
VIN4-
VIN5+
VIN5-
VIN6+
VIN6-
VDD1
DGND1
VDD2
DGND2
VCCAD1
AGNDA1
VCCAD2
AGNDAD2
VCOMAD
VREFAD1
VREFAD2
VOUT1+
VOUT1-
VOUT2+
VOUT2-
VOUT3+
VOUT3-
VOUT4+
VOUT4-
VOUT5+
VOUT5-
VOUT6+
VOUT6-
VOUT7+
VOUT7-
VOUT8+
VOUT8-
VCCDA1
AGNDDA1
VCCDA2
AGNDDA2
VCOMDA
PCM3168A
PCM3168A-Q1
C5
C6
C1
C7
C2
C3
C4
C8
C11
C9
C10
C12
ControlMCU
AnalogOutput
LPFandBuffer
AnalogInput
DigitalAudioProcessor
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12
+
+
+
0V
5V
0V
3.3V
+
AnalogInput
AnalogInput
AnalogInput
AnalogInput
AnalogInput
AnalogOutput
LPFandBuffer
AnalogOutput
LPFandBuffer
AnalogOutput
LPFandBuffer
AnalogOutput
LPFandBuffer
AnalogOutput
LPFandBuffer
AnalogOutput
LPFandBuffer
AnalogOutput
LPFandBuffer
+
+
3.3V
48
3.3V
48
48
0V
48
0V
(1) (2) (3) (4)
PCM3168A
PCM3168A-Q1
www.ti.com ......................................................................................................................................................................................... SBAS452 – SEPTEMBER 2008
A typical circuit connection for six-channel analog in and eight-channel analog out is shown in Figure 56 .
C
1
through C
6
are 1- µ F ceramic capacitors dependent on power-supply quality. C
7
and C
8
are 10- µ F electrolytic capacitors dependent on
power-supply quality. C
9
and C
10
are 10- µ F electrolytic capacitors. C
11
and C
12
are 10- µ F electrolytic capacitors. R
1
through R
12
are 22- Ω to
100- Ω resistors.
Figure 56. Example Board Layout
Termination for mode control: any one of the circuits shown in Figure 57 must be applied according to the
necessary mode/configuration. Resistor value must be 220 k Ω , ± 5% tolerant. The PowerPAD must be tied to the
ground plane with enough electrical and thermal conductivity; see the example board layout in Figure 56 .
Figure 57. Typical Circuit Connections
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