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參數(shù)資料
| 型號： | AK5354 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | Lowe Power 20Bit ΔΣ ADC with PGA(帶可編程增益放大器的低電壓20位ΔΣA/D轉(zhuǎn)換器) |
| 中文描述： | 洛功率20位ΔΣADC的（帶可編程增益放大器的低電壓20位ΔΣA/數(shù)轉(zhuǎn)換器與美國PGA） |
| 文件頁數(shù)： | 17/19頁 |
| 文件大?。?/td> | 109K |
| 代理商： | AK5354 |
ASAHI KASEI
[AK5354]
MS0054-E-01
2001/01
- 17 -
1. Grounding and Power Supply Decoupling
The AK5354 requires careful attention to power supply and grounding arrangements. VA is usually supplied from analog
supply in system. VD is a power supply pin to interface with the external ICs and is supplied from digital supply in system.
VSS of the AK5354 should be connected to 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 AK5354 as possible, with the small value ceramic capacitor being the nearest.
2. Voltage Reference
The input to VA Voltage sets the analog input range. A 0.1
μ
F ceramic capacitor and a 10
μ
F electrolytic capacitor is
connected to VA and VSS pins, normally. VCOM is a signal ground of this chip. An electrolytic 2.2
μ
F in parallel with a
0.1
μ
F ceramic capacitor attached to these pins eliminates the effects of high frequency noise. No load current may be
drawn from VCOM pin. All signals, especially clock, should be kept away from the VA, VD and VCOM pins in order to
avoid unwanted coupling into the AK5354.
3. Analog Inputs
The analog inputs are single-ended and the input resistance 9k
(typ). The input signal range scales with nominally 0.6 x
VA Vpp (typ) centered in the internal common voltage (typ. 0.45 x VA). Usually, the input signal cuts DC with a capacitor.
The cut-off frequency is fc=(1/2
π
RC). The AK5354 can accept input voltages from VSS to VA. The ADC output data
format is 2’s complement. The DC offset including ADC own DC offset removed by the internal HPF
(fc=3.4Hz@fs=44.1kHz).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK5354VT | Circular Connector; No. of Contacts:55; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-35 RoHS Compliant: No |
| AK5355VN | Low Power 16bit ツヒ ADC |
| AK5355 | LOW POWER 16BIT ADC |
| AK5355VT | LOW POWER 16BIT ADC |
| AK5357ET | 24Bit 96kHz ツヒ ADC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK5354_04 | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power 20bit ツヒ ADC with PGA |
| AK5354VT | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power 20bit ツヒ ADC with PGA |
| AK5355 | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER 16BIT ADC |
| AK5355_05 | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power 16bit ツヒ ADC |
| AK5355VN | 制造商:AKM 制造商全稱:AKM 功能描述:PLL & MIC-AMP 16-Bit Stereo ADC |
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