ak4528 AKM Semiconductor, Inc., ak4528 Datasheet - Page 27

• Manufacturer Part Number: ak4528
• Description: High Performance 24bit 96khz Audio Codec
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
The digital inputs of the AK4528 are TTL inputs and can accept the signal of device with a nominal 3V supply. The
digital output can interface with the peripheral device with a nominal 3V supply when the VT supply operates at a
nominal 3V supply.
MS0011-E-01
Peripheral I/F Example
Figure 15. External low cost 1st order LPF Example (using dual supply op-amp)
5V Analog
Figure 14. External 2nd order LPF Example (using dual supply op-amp)
AOUT-
AOUT+
AOUT-
AOUT+
Analog
Figure 16. Power supply connection example
AK4528
Digital
4.7k
4.7k
3300p
4.7k
4.7k
4.7k
4.7k
I/F
When R1=200ohm
When R1=180ohm
4.7k
- 27 -
R1
R1
Audio signal
fc=93.2kHz, Q=0.712, g=-0.1dB at 40kHz
fc=98.2kHz, Q=0.681, g=-0.2dB at 40kHz
470p
Control signal
180p
180p
4.7k
470p
-Vop
+Vop
+
-
-Vop
+Vop
+
-
uP &
Others
DSP
fc=188kHz
Analog
Out
3V Digital
3 or 5V Digital
Analog
Out
[AK4528]
2004/01