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AK4529 查看數據表(PDF) - Asahi Kasei Microdevices

零件编号产品描述 (功能)生产厂家
AK4529 High Performance Multi-channel Audio CODEC AKM
Asahi Kasei Microdevices AKM
AK4529 Datasheet PDF : 38 Pages
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4. Analog Outputs
The analog outputs are also single-ended and centered around the VCOM voltage. The input signal range scales with the
supply voltage and nominally 0.6 x VREFH Vpp. The DAC input data format is 2’s complement. The output voltage is a
positive full scale for 7FFFFFH(@24bit) and a negative full scale for 800000H(@24bit). The ideal output is VCOM
voltage for 000000H(@24bit). The internal analog filters remove most of the noise generated by the delta-sigma
modulator of DAC beyond the audio passband.
DC offsets on analog outputs are eliminated by AC coupling since DAC outputs have DC offsets of a few mV.
n Peripheral I/F Example
The AK4529 can accept the signal of device with a nominal 3.3V supply because of TTL input. The power supply for
output buffer (TVDD) of the AK4529 should be 3.3V when the peripheral devices operate at a nominal 3.3V supply.
Figure 22 shows an example with the mixed system of 3.3V and 5V.
3.3V Analog
5V for input
3.3V Digital
Audio signal
5V Analog
3.3V for output
5V Digital
Analog Digital
Control signal
uP &
Figure 22. Power supply connection example
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