ak4112b AKM Semiconductor, Inc., ak4112b Datasheet - Page 14

• Manufacturer Part Number: ak4112b
• Description: High Feature 96khz 24bit Dir
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
In case of coaxial input, as the input level of RX line is small, in Serial Mode, be careful not to crosstalk among RX input
lines. For example, by inserting the shield pattern among them. In Parallel Mode, only one channel input (RX1) is
available and RX2-4 change to other pins for audio format control. Those pins must be fixed to “H” or “L”.
The AK4112B includes the TX output buffer. The output level meets combination 0.5V+/-20% using the external resistor
network. The T1 in Figure 3 is a transformer of 1:1.
MS0078-E-02
Note: In case of coaxial input, if a coupling level to this input from the next RX input line
pattern exceeds 50mV, there is a possibility to occur an incorrect operation. In this case, it is
possible to lower the coupling level by adding this decoupling capacitor.
DVSS
Optical
Fiber
TX
Coax
75Ω
Optical Receiver
R1
Figure 1. Consumer Input Circuit (Coaxial Input)
Figure 2. Consumer Input Circuit (Optical Input)
O/E
Figure 3. TX External Resistor Network
R2
75Ω
- 14 -
0.1uF
470
T1
0.47nF
Note
75Ω cable
Vdd
3.3V 240Ω 150Ω
3.0V 220Ω 150Ω
RX
RX
AK4112B
AK4112B
R1
R2
[AK4112B]
2004/04