PCM1681_15 Datasheet, PDF (33/44 Pages) Texas Instruments – PCM1681 24-Bit, 192-kHz Sampling, Enhanced Multilevel Delta-Sigma,Eight-Channel Audio Digital-to-Analog Converter

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Typical Application (continued)
PCM1681, PCM1681-Q1
SLES211C – FEBRUARY 2008 – REVISED JULY 2015
mC or mP
PLL170x
R₁
R₄
27-MHz
Master
Clock
R₃
R₂
Audio DSP
or
R₅
Decoder
R₆
R₇
3.3 V Digital
5 V Analog
0V
Termination
C₁₃
+
C₁₄
+
1 ZR1/ZR1/FMT0 ZR2 28
2 MS/ADR/FMT1 V_OUT1 27
3 MC/SCL/DEMP V_OUT2 26
4 MD/SDA/MUTE V_COM 25
5 SCK
AGND2 24
6 DATA1
7 BCK
V_CC2 23
V_OUT3 22
8 LRCK
C₉
9 V_DD
10 DGND
11 DATA2
V_OUT4 21
V_OUT5 20
V_OUT6 19
AGND1 18
+ C1
+ C2
+
C₁₂
C₁₁
+ ^C3
+ ^C4
+ C5
+ C6
12 DATA3
13 DATA4
14 MSEL
V_CC1 17
C₁₀
V_OUT7 16
V_OUT8 15
+ ^C7
+ C8
PCM1681
PCM1681-Q1
C1-C8: 4.7-mF to 10-mF Electrolytic Typical
C9-C11: 1-mF Ceramic Typical
C12: 2.2-mF to 10-mF Electrolytic Typical
C13, C14: 10-mF Electrolytic Typical
R1-R7: 22 W to 100 W Typical
The termination for mode/configuration control:
Either one of the following circuits has to be applied
according to necessary mode/configuration.
Resistor value has to be 220 kW ±5% tolerant.
3.3 V
3.3 V
14
14
14
(1)
14
(2)
0V
0V
(3)
(4)
Figure 34. Basic Connection Diagram
9.2.1 Design Requirements
• Control: Hardware, I²C, or SPI
• Audio Input: PCM Serial data, TDM, or DSP
• Audio Output: 3.75-Vpp analog audio
• Master Clock: PLL170X IC
Output
Low-Pass
Filter
L
R
LF
RF
LS
RS
CTR
SUB
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