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參數(shù)資料
| 型號(hào)： | AK4343 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | Stereo DAC with HP/RCV/SPK-AMP |
| 中文描述： | 立體聲DAC惠普/垃圾車/胰腎聯(lián)合移植腺苷 |
| 文件頁(yè)數(shù)： | 83/98頁(yè) |
| 文件大小： | 851K |
| 代理商： | AK4343 |
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ASAHI KASEI
[AK4343]
MS0478-E-01
2006/10
- 83 -
1.
Grounding and Power Supply Decoupling
The AK4343 requires careful attention to power supply and grounding arrangements. AVDD, DVDD and HVDD are
usually supplied from the system’s analog supply. If AVDD, DVDD and HVDD are supplied separately, the power-up
sequence is not critical. AVSS, DVSS and HVSS of the AK4343 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 AK4343 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
AK4343.
3. Analog Inputs
The Line and MIN inputs are single-ended. The input signal range scales with nominally at 0.06 x AVDD Vpp(typ)
@MGAIN1-0 bits = “01”, 0.03 x AVDD Vpp(typ) @MGAIN1-0 bits = “10”, 0.015 x AVDD Vpp(typ) @MGAIN1-0
bits = “11” or 0.6 x AVDD Vpp(typ) @MGAIN1-0 bits = “00” for the Line input and 0.6 x AVDD Vpp (typ) for the MIN
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 AK4343 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). Stereo Line Output and Receiver Output are centered at 0.45 x AVDD. The
Headphone-Amp and Speaker-Amp outputs are centered at HVDD/2.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4343EN | Stereo DAC with HP/RCV/SPK-AMP |
| AK4345 | 100dB 96kHz 24-Bit Stereo 3.3V ツヒ DAC with DIT |
| AK4345ET | 100dB 96kHz 24-Bit Stereo 3.3V ツヒ DAC with DIT |
| AK4346 | 3.3V 192kHz 24-Bit 6-Channel DAC |
| AK4346EF | 3.3V 192kHz 24-Bit 6-Channel DAC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK434-3 | 功能描述:CABLE CENTRONICS F-F 3M RoHS:否 類別:電纜組件 >> D形，Centronics 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 配置:VHDCI 68 位置公型至公型 長(zhǎng)度:10.00'（3.05m） 纜線類型:圓形 - 黑色 屏蔽:屏蔽 樣式:SCSI Ultra 2 |
| AK4343EN | 制造商:AKM 制造商全稱:AKM 功能描述:Stereo DAC with HP/RCV/SPK-AMP |
| AK4343VNP-L | 制造商:AKM Semiconductor Inc 功能描述:AK4343VNP-L |
| AK4344 | 制造商:AKM 制造商全稱:AKM 功能描述:100dB 96kHz 24-Bit Stereo 3.3V ツヒ DAC |
| AK4344_10 | 制造商:AKM 制造商全稱:AKM 功能描述:100dB 96kHz 24-Bit Stereo 3.3V ΔΣ DAC |
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