LC89052T Datasheet, PDF (41/42 Pages) Sanyo Semicon Device – Digital Audio Interface Receiver

LC89052T
10 Application Example
• Decoupling capacitors (0.1µF) for the power supply pin, should be located as close to the LC89052T as possible. Use
ceramic capacitors with good high frequency characteristics as the decoupling capacitors. Use a capacitor with a
minimal thermal coefficient for the PLL loop filter capacitor.
• There are no constraints on the NC pin configuration. IC operation is not affected by leaving them open or by holding
them fixed at particular levels.
R4
C1
R3
C1
CPU
C0
R1
R2
1
XOUT
24
XIN
2
ERROR
3
PD
23
SDIN
22
DATAO
DSP
4
NC
21
LRCK
ADC
5
CE
20
BCK
DAC
6
19
CL
LC89052T
CKOUT
7
DI
18
DGND
8
DO
17
AGND
9
E / INT
16
NC C4 C5 C4 C5
10
R0 ^AUDIO
11
UGPI
12
RXIN
15
LPF
14
AVDD
13
DVDD
R5
C3
C2
Table 10.1 Recommended Circuit Constant Values
Symbol
Recommended value
Use
Remarks
R0
50 to 1kΩ
—
R1
75Ω
Coaxial terminator
R2
50k to 100kΩ
Input amplifier feedback
R3
1MΩ
Oscillator amplifier feedback
R4
150 to 330Ω
Oscillator amplifier current constraint
R5
*
PLL loop filter
Tolerance: ±5%
C0
0.01µ to 0.1µF
AC coupling
C1
1p to 33pF
Oscillator element load
NP0 special ceramic capacitor
C2
*
PLL loop filter
C3
*
PLL loop filter
Film capacitor
Ceramic capacitor
C4
Over 1µF
Power supply decoupling
Electrolytic capacitor
C5
0.1µF
Power supply decoupling
Ceramic capacitor
* : See section 8.3.1.
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