データシートサーチシステム |
|
AD9218BSTZ-651 データシート(PDF) 10 Page - Analog Devices |
|
AD9218BSTZ-651 データシート(HTML) 10 Page - Analog Devices |
10 / 28 page AD9218 Rev. C | Page 10 of 28 TERMINOLOGY Full-Scale Input Power Analog Bandwidth Expressed in dbm. Computed using the following equation: The analog input frequency at which the spectral power of the fundamental frequency (as determined by the FFT analysis) is reduced by 3 dB. ⎟ ⎟ ⎟ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎜ ⎜ ⎜ ⎝ ⎛ = − − 001 . 0 log 10 2 INPUT Scale Full Scale Full Z rms V Power Aperture Delay The delay between the 50% point of the rising edge of the ENCODE command and the instant at which the analog input is sampled. Gain Error Gain error is the difference between the measured and the ideal full-scale input voltage range of the ADC. Aperture Uncertainty (Jitter) The sample-to-sample variation in aperture delay. Harmonic Distortion, Second The ratio of the rms signal amplitude to the rms value of the second harmonic component, reported in dBc. Crosstalk Coupling onto one channel being driven by a low level signal (–40 dBFS) when the adjacent interfering channel is driven by a full-scale signal. Harmonic Distortion, Third The ratio of the rms signal amplitude to the rms value of the third harmonic component, reported in dBc. Differential Analog Input Resistance, Differential Analog Input Capacitance, Differential Analog Input Impedance Integral Nonlinearity The deviation of the transfer function from a reference line measured in fractions of 1 LSB using a “best straight line” determined by a least-square curve fit. The real and complex impedances measured at each analog input port. The resistance is measured statically and the capacitance and differential input impedances are measured with a network analyzer. Minimum Conversion Rate The encode rate at which the SNR of the lowest analog signal frequency drops by no more than 3 dB below the guaranteed limit. Differential Analog Input Voltage Range The peak-to-peak differential voltage that must be applied to the converter to generate a full-scale response. Peak differential voltage is computed by observing the voltage on a single pin and subtracting the voltage from the other pin, which is 180 degrees out of phase. Peak-to-peak differential is computed by rotating the input phase 180 degrees and again taking the peak measurement. The difference is then computed between both peak measurements. Maximum Conversion Rate The encode rate at which parametric testing is performed. Output Propagation Delay The delay between the 50% level crossing of ENCODE A or ENCODE B and the 50% level crossing of the respective channel’s output data bit. Noise (for Any Range Within the ADC) Differential Nonlinearity ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − − × × = 10 10 001 . 0 dBFS dBc dBm NOISE Signal SNR FS Z V The deviation of any code width from an ideal 1 LSB step. Effective Number of Bits (ENOB) where Z is the input impedance, FS is the full scale of the device for the frequency in question, SNR is the value for the particular input level, and Signal is the signal level within the ADC reported in dB below full scale. This value includes both thermal and quantization noise. The effective number of bits is calculated from the measured SNR based on the equation 02 . 6 76 . 1 dB − = MEASURED SNR ENOB Power Supply Rejection Ratio ENCODE Pulse Width/Duty Cycle The ratio of a change in input offset voltage to a change in power supply voltage. Pulse width high is the minimum amount of time that the ENCODE pulse should be left in Logic 1 state to achieve rated performance; pulse width low is the minimum time ENCODE pulse should be left in low state. See timing implications of changing tENCH in text. At a given clock rate, these specifications define an acceptable ENCODE duty cycle. |
同様の部品番号 - AD9218BSTZ-651 |
|
同様の説明 - AD9218BSTZ-651 |
|
|
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 |