ak4101a AKM Semiconductor, Inc., ak4101a Datasheet - Page 20

• Manufacturer Part Number: ak4101a
• Description: Quad Outputs 192khz 24-bit Dit
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
n Line Drivers
There are four RS422 line drivers on chip. The AES3 specification states that the line driver shall have a balanced
output with an internal impedance of 110 ohms 20% and also requires a balanced output drive capability of 2 to 7 volts
peak-to-peak into 110 ohm load. The internal impedance of the RS422 driver along with a series resistors of 56 ohms
realizes this requirement. For consumer use(S/PDIF), 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 330 ohms in parallel with 100 ohms realizes this
requirement. The outputs can be set to ground by resetting the device or a software mute.
MS0250-E-00
TXP
TXN
TXP
TXN
Figure 17. Professional Output Driver Circuit
Figure 18. Consumer Output Driver Circuit
330
56
100
0.1u
0.1u
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Transformer
Transformer
XLR Connector
RCA Phono
Connector
[AK4101A]
2003/07