AK4115 Datasheet, PDF (32/64 Pages) Asahi Kasei Microsystems – High Feature 192kHz 24bit Digital Audio Interface Transceiver

ASAHI KASEI
[AK4115]
2-2. Consumer Mode (TVDD = 2.7V ∼ 5.5V)
For consumer use , the specifications require an output impedance of 75 ohms ±20% and a driver level of 0.5 ± 20%
volts peak to peak. A combination of R1 in parallel with R2 meets this requirement. The outputs can be set to ground by
resetting the device or a software mute.
TXP1
0.1uF R1
TXN1
R2
75Ω cable
open
TVDD R1 R2
3.3V 270Ω 150Ω
T1
3.0V 240Ω 150Ω
5.0V 430Ω 150Ω
Figure 26. Consumer Output Driver Circuit at AC coupling
„ PLL Loop Filter
C1 and R should be connected in series and attached between FILT pin and AVSS in parallel with C2. The value of PLL
Loop Filter includes temperature deviation. Be careful to minimize the noise into the FILT pin. When the Studio Sync
mode is not used, FILT pin can be open.
AK4115
FILT
R
C2
C1
AVSS
Figure 27. PLL Loop Filter
R [Ω]
C1 [nF]
C2 [pF]
24k ± 5%
10 ± 30%
100 ± 30%
Table 24. Value of PLL Loop Filter
MS0573-E-00
- 32 -
2006/12