WM8501GED(2006) Просмотр технического описания (PDF) - Wolfson Microelectronics plc

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производитель

WM8501GED
(Rev.:2006)

24-bit 192kHz Stereo DAC with 1.7Vrms Line Driver

Wolfson Microelectronics plc 

Pre-Production

WM8501

POWER UP/DOWN SEQUENCE

POWER UP/DOWN SEQUENCE

For click free operation, the WM8501 should be powered up and down in a specific sequence.

Power-up:

1. Power up AVDD and DVDD and wait to settle

2. Turn on clocks and data (MCLK, BCLK, LRCLK, SDATA)

3. Switch ENABLE pin from low to high

Power-down:

1. Switch Enable from high to low

2. Remove clocks and data

3. Power down AVDD and DVDD

RECOMMENDED ANALOGUE LOW PASS FILTER

Ω

Ω

Ω

Ω

Figure 18 Recommended 1st Order Low Pass Filter

Note: Capacitors should be COG dielectric.

An external single pole RC filter is recommended (see Figure 18) if the device is driving a

wideband amplifier. However the WM8501 does contain an internal low pass filter which should

be adequate in most applications.

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PP Rev 3.1 May 2006

17

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