 |
データシートサーチシステム |
|
|
データシートサーチシステム |
|
AD7934-6 データシート(PDF) 9 Page - Analog Devices |
|
||||||||||||||||||||||||||||||
AD7934-6 データシート(HTML) 9 Page - Analog Devices |
|
|
9 / 28 page  AD7934-6 Rev. A | Page 9 of 28 TERMINOLOGY Integral Nonlinearity (INL) This is the maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The endpoints of the transfer function are zero scale, a point 1 LSB below the first code transition, and full scale, a point 1 LSB above the last code transition. Differential Nonlinearity (DNL) This is the difference between the measured and the ideal 1 LSB change between any two adjacent codes in the ADC. Offset Error This is the deviation of the first code transition (00 … 000) to (00 … 001) from the ideal (that is, AGND + 1 LSB). Offset Error Match This is the difference in offset error between any two channels. Gain Error This is the deviation of the last code transition (111 … 110) to (111 … 111) from the ideal (that is, VREF – 1 LSB) after the offset error has been adjusted out. Gain Error Match This is the difference in gain error between any two channels. Zero-Code Error This applies when using the twos complement output coding option, in particular to the 2 × VREF input range, with −VREF to +VREF biased about the VREF point. It is the deviation of the midscale transition (all 0s to all 1s) from the ideal VIN voltage (that is, VREF). Zero-Code Error Match This is the difference in zero-code error between any two channels. Positive Gain Error This applies when using the twos complement output coding option, in particular to the 2 × VREF input range, with −VREF to +VREF biased about the VREF point. It is the deviation of the last code transition (011 … 110) to (011 … 111) from the ideal (that is, +VREF – 1 LSB) after the zero-code error has been adjusted out. Positive Gain Error Match This is the difference in positive gain error between any two channels. Negative Gain Error This applies when using the twos complement output coding option, in particular to the 2 × VREF input range, with −VREF to +VREF biased about the VREF point. It is the deviation of the first code transition (100 … 000) to (100 … 001) from the ideal (that is, −VREF + 1 LSB) after the zero-code error has been adjusted out. Negative Gain Error Match This is the difference in negative gain error between any two channels. Channel-to-Channel Isolation This is a measure of the level of crosstalk between channels. It is measured by applying a full-scale sine wave signal to the three, nonselected input channels and applying a 50 kHz signal to the selected channel. The channel-to-channel isolation is defined as the ratio of the power of the 50 kHz signal on the selected channel to the power of the noise signal on the unse- lected channels that appears in the fast Fourier transform (FFT) of this channel. The noise frequency on the unselected channels varies from 40 kHz to 740 kHz. The noise amplitude is at 2 × VREF, while the signal amplitude is at 1 × VREF. See Figure 4. Power Supply Rejection Ratio (PSRR) PSRR is defined as the ratio of the power in the ADC output at full-scale frequency ( f) to the power of a 100 mV p-p sine wave applied to the ADC VDD supply of frequency fS. The frequency of the noise varies from 1 kHz to 1 MHz. PSRR (dB) = 10log(Pf/PfS) where: Pf is the power at frequency f in the ADC output. PfS is the power at frequency fS in the ADC output. Common-Mode Rejection Ratio (CMRR) CMRR is defined as the ratio of the power in the ADC output at full-scale frequency ( f) to the power of a 100 mV p-p sine wave applied to the common-mode voltage of VIN+ and VIN− of frequency fS. CMRR (dB) = 10log(Pf/PfS) where: Pf is the power at frequency f in the ADC output. PfS is the power at frequency fS in the ADC output. |
同様の部品番号 - AD7934-6 |
|
同様の説明 - AD7934-6 |
|
|
|
リンク URL |
| プライバシーポリシー |
| ALLDATASHEET.JP |
| ALLDATASHEETはお客様のビジネスに役立ちますか？ [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Japanese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
