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參數(shù)資料
| 型號： | AK4351VT |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 18 BIT ADVANCED MULTI BIT 2CH DAC |
| 中文描述： | 18位高級多比特2聲道數(shù)模轉換器 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大?。?/td> | 134K |
| 代理商： | AK4351VT |
ASAHI KASEI
[AK4351]
M0022-E-04
1999/12
- 12 -
1. Grounding and Power Supply Decoupling
VDD and VSS are supplied from analog supply and should be separated from system digital supply. Decoupling capacitor,
especially 0.1
m
F ceramic capacitor for high frequency should be placed as near to VDD as possible.
2. Voltage Reference
The differential Voltage between VREF and VSS sets the analog output range. VREF pin is normally connected to VDD
with a 0.1μF ceramic capacitor. VCOM is a signal ground of this chip. An electrolytic capacitor 10μF parallel with a 0.1μF
ceramic capacitor attached to VCOM pin eliminates the effects of high frequency noise. No load current may be drawn
from VCOM pin. ALL signals, especially clocks, should be kept away from the VREF and VCOM pins in order to avoid
unwanted coupling into the AK4351.
3. Analog Outputs
The analog outputs are also single-ended and centered around the VCOM voltage. The output signal range is typically
3.45Vpp. AC coupling capacitors of larger than 1μF are recommended. The internal switched-capacitor filter and
continuous-time filter attenuate the noise generated by the delta-sigma modulator beyond the audio passband. Therefore,
any external filters are not required for typical application. The output voltage is a positive full scale for 7FFFH(@16bit)
and a negative full scale for 8000H(@16bit). The ideal output is VCOM voltage for 0000H(@16bit).
DC offsets on analog outputs are eliminated by AC coupling since analog outputs have DC offsets of VCOM + a few mV.
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相關代理商/技術參數(shù) |
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| AK4351VTP-E2 | 制造商:AKM Semiconductor Inc 功能描述:AK4351VTP-E2 |
| AK4352 | 制造商:AKM 制造商全稱:AKM 功能描述:2V & LOW POWER MULTI-BIT DAC |
| AK4352VT | 制造商:AKM 制造商全稱:AKM 功能描述:2V & LOW POWER MULTI-BIT DAC |
| AK4352VTP | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
| AK4353 | 制造商:AKM 制造商全稱:AKM 功能描述:96kHz 24BIT DAC WITH DIT |
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