參數(shù)資料
型號： AK4633
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 16-Bit Mono CODEC with ALC & MIC/SPK-AMP
中文描述： 16位單聲道編解碼器ALC的
文件頁數(shù)： 65/82頁
文件大?。?/td> 688K
代理商： AK4633
ASAHI KASEI
[AK4633]
MS0447-E-03
2006/04
- 65 -
1. Grounding and Power Supply Decoupling
The AK4633 requires careful attention to power supply and grounding arrangements. AVDD, DVDD and SVDD are
usually supplied from the system’s analog supply. If AVDD, DVDD and SVDD are supplied separately, the correct
power up sequence should be observed. AVSS, DVSS and SVSS of the AK4633 should be connected to the analog
ground plane. System analog ground and digital ground should be connected together near to where the supplies are
brought onto the printed circuit board. Decoupling capacitors should be as near to the AK4633 as possible, with the small
value ceramic capacitor being the nearest.
2. Voltage Reference
VCOM is a signal ground of this chip. A 2.2
μ
F electrolytic capacitor in parallel with a 0.1
μ
F ceramic capacitor attached
to the VCOM pin eliminates the effects of high frequency noise. No load current may be drawn from the VCOM pin. All
signals, especially clocks, should be kept away from the VCOM pin in order to avoid unwanted coupling into the
AK4633.
3. Analog Inputs
The Mic and Beep inputs are single-ended. The input signal range scales with nominally at 0.06 x AVDD Vpp for the Mic
input and 0.6 x AVDD Vpp for the Beep input, centered around the internal common voltage (approx. 0.45 x AVDD).
Usually the input signal is AC coupled using a capacitor. The cut-off frequency is fc = (1/2
π
RC). The AK4633 can accept
input voltages from AVSS to AVDD.
4. Analog Outputs
The input data format for the DAC is 2’s complement. The output voltage is a positive full scale for 7FFFH(@16bit) and
a negative full scale for 8000H(@16bit). Mono output from the MOUT pin and Mono Line Output from the AOUT pin
are centered at 0.45 x AVDD (typ). The Speaker-Amp output is centered at SVDD/2.
相關(guān)PDF資料
PDF描述
AK4640 16BIT CODEC WITH MIC /HP/SPK-AMPl
AK4640VG 16BIT CODEC WITH MIC /HP/SPK-AMPl
AK4640VN 16BIT CODEC WITH MIC /HP/SPK-AMPl
AK4642EN Stereo CODEC with MIC/HP/SPK-AMP
AK4643EN Stereo CODEC with MIC/HP/RCV/SPK-AMP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4633ENP-L 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:LOW COST MONO CODEC WITH SPK A
AK4633VN 制造商:AKM 制造商全稱:AKM 功能描述:16bit mono CODEC with MIC/SPK amplifier.
AK4633VNP-L 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:LOW COST MONO CODEC WITH SPK A
AK4634 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK-AMP
AK4635 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
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