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參數(shù)資料
| 型號： | AK5351 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | Enhanced Dual Bit ΔΣ 20 Bit ADC(用于立體聲數(shù)字系統(tǒng)的20位2通道A/D轉換器（采用加強型雙位結構）) |
| 中文描述： | 增強雙位ΔΣ20位ADC（用于立體聲數(shù)字系統(tǒng)的20位2通道的A / D轉換器（采用加強型雙位結構）） |
| 文件頁數(shù)： | 15/19頁 |
| 文件大?。?/td> | 174K |
| 代理商： | AK5351 |
ASAHI KASEI
[AK5351]
0166-E-00
1997/4
- 15 -
Analog connections
Analog signal is differentially input into the modulator via the AIN+ and the AIN- pins. The input voltage is the
difference between AIN+ and AIN- pins. The full-scale of each pin is
±
2.10Vp-p on its reference
voltage(VREF). In case that the positive input is more than its full-scale, the AK5351 outputs positive
7FFFFH(Hex, Full-scale). In case that the negative input is more than its full-scale, the AK5351 outputs
negative 80000H(Hex, Full-scale). Analog inputs of the AK5351 are normally Full-differential inputs, while they
are also acceptable Single-ended inputs. In case of Single-ended inputs, analog signal is input from either
positive or negative input and the other side inputs bias voltage. Figure 7 is a circuit example which analog
input signal is input 4.20Vp-p into AIN- pin and bias voltage into AIN+ pin. The DC offset is removed by the
internal HPF.
AK5351 samples the analog inputs at 3.072MHz with fs=48kHz. The digital filter rejects all noise between
26.5kHz and 3.0455MHz. However, the filter will not reject frequencies right around 3.072MHz ( and multiples
of 3.072MHz). Most audio signals do not have significant noise energy at 3.072MHz. Hence, a simple RC filter
is sufficient to attenuate any noise energy at 3.072MHz.
The reference voltage for A/D converter is supplied from the VREF pin at VA reference. In order to eliminate
the effects of high frequency noise on the VREF pin, a 10uF or less electrolytic capacitor and a 0.1uF ceramic
capacitor should be connected parallel between the VREF and the VA pins. No current should be driven from
the VREF pin.
The AK5351 accepts +5V supply voltage. Any voltage which exceeds the upper limit of (VA+)+0.3V and lower
limit of AGND-0.3V and any current beyond 10mA for the analog input pins(AINL±, AINR±) should be avoided.
Excessive currents to the input pins may damage the device. Hence input pins must be protected from signals
at or beyond these limits.
Use caution specially in case of using
±
15V in surrounding analog circuit.
Figure 6 . Full-differential Input Buffer Circuit Example
Figure 7 . Single-ended Input Buffer Circuit Example
相關PDF資料 |
PDF描述 |
|---|---|
| AK5351-VF | Circular Connector; No. of Contacts:26; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-26 RoHS Compliant: No |
| AK5352 | 96kHz Sampling ΔΣ 20bit ADC(用于DAT和DVD的20位2通道A/D轉換器（采用加強型雙位結構）) |
| AK5352-VF | 96kHz Sampling 20bit ADC |
| AK5353 | 96kHz ΔΣ 24bit ADC with Single-ended Input(帶寬采樣率4KHz到96KHz和單端輸入的24位立體聲ΔΣA/D轉換器) |
| AK5353VT | 96kHz 24BIT ADC WITH SIGLE-ENDED INPUT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AK535-1.8 | 功能描述:CABLE POWER SUPPLY ANGLED 1.8M RoHS:否 類別:電纜組件 >> 電源/線路 系列:- 標準包裝:50 系列:- 樣式:公頭插針（刀片）到插座（插槽） 第一連接器:CEE 7/16 第二連接器:IEC 320-C7 導線數(shù):2 線纜類型:H03VVH2-F，無屏蔽 長度:4.9'（1.5m） 認證標記:CEBEC，cUL，DEMKO，ESTI，F(xiàn)IMKO，KEMA，NEMKO，OVE，SEMKO，VDE 認證國家/地區(qū):奧地利、比利時、加拿大、丹麥、芬蘭、德國、荷蘭、挪威、瑞典、瑞士 顏色:黑 特點:- 線規(guī):- 工作溫度:- 額定電壓:250V 額定電流:2.5A |
| AK5351VF | 功能描述:IC ADC 20BIT ENHANCED 24VSOP 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 |
| AK5351-VF | 制造商:AKM 制造商全稱:AKM 功能描述:Enhanced Dual bit 20bit ADC |
| AK5352 | 制造商:AKM 制造商全稱:AKM 功能描述:EVALUATION BOARD REV.B FOR AK5352 |
| AK5352VF | 功能描述:IC ADC 20BIT SAMPLING 24VSOP 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 |
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