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參數(shù)資料
| 型號： | AK4650VG |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
| 中文描述： | 16位ツヒ編解碼器麥克風/惠普/胰腎聯(lián)合移植腺苷 |
| 文件頁數(shù)： | 83/86頁 |
| 文件大?。?/td> | 824K |
| 代理商： | AK4650VG |
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[AK4650]
MS0502-E-01
2007/04
- 83 -
1. Grounding and Power Supply Decoupling
The AK4650 requires careful attention to power supply and grounding arrangements. AVDD, DVDD, HVDD and
TSVDD are usually supplied from the system’s analog supply. If AVDD, DVDD, HVDD and TSVDD are supplied
separately, the correct power up sequence should be observed. AVSS, DVSS, HVSS and TSVSS of the AK4650 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 AK4538 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 VREF and VCOM pins in order to avoid unwanted coupling into
the AK4650.
3. Analog Inputs
The Mic, Beep and stereo line inputs are single-ended. AUX input is differential. The input signal range scales with
nominally at 0.06 x AVDD Vpp for the Mic input, 0.6 x AVDD Vpp for the Beep input, stereo line input and AUX input,
centered around the internal common voltage (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 AK4650 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 MOUT2 pin and Mono Line Output from the
MOUT+/MOUT
pins are centered at 0.45 x AVDD, Headphone-Amp is centered at 0.44 x AVDD and Speaker-Amp
output is centered at HVDD/2, respectively.
相關PDF資料 |
PDF描述 |
|---|---|
| AK4651 | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4651VG | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4665A | 20-Bit Stereo CODEC with MIC/HP-AMP |
| AK4665AEN | 20-Bit Stereo CODEC with MIC/HP-AMP |
| AK4671 | Stereo CODEC with MIC/RCV/HP-AMP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AK4651 | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4651VG | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4664VQ | 功能描述:IC CODEC STEREO 20BIT LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購買時間 標準包裝:1,000 |
| AK4665A | 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with MIC/HP-AMP |
| AK4665AEN | 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with MIC/HP-AMP |
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