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AD7911/AD7921

Intermodulation Distortion

Rev. 0 | Page 12 of 28

With inputs consisting of sine waves at two frequencies, fa and

fb, any active device with nonlinearities creates distortion

products at sum and difference frequencies of mfa ± nfb, where

= 0, 1, 2, 3, and so on. Intermodulation distortion terms are

those for which neither

nor

is equal to zero. For example,

the second-order terms include (fa + fb) and (fa fb), while the

third-order terms include (2fa + fb), (2fa fb), (fa + 2fb), and

(fa 2fb).

The AD7911/AD7921 are tested using the CCIF standard,

where two input frequencies are used (see fa and fb in the

Specifications section). In this case, the second-order terms are

usually distanced in frequency from the original sine waves,

while the third-order terms are usually at a frequency close to

the input frequencies. As a result, the second-order and third-

order terms are specified separately. The calculation of the

intermodulation distortion is as in the THD specification,

where it is defined as the ratio of the rms sum of the individual

distortion products to the rms amplitude of the sum of the

fundamentals expressed in dB.

相關PDF資料	PDF描述
AD7922AUJ-R2	ER 2C 2#16S PIN RECP
AD7912AUJ-R2	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs
AD7922AUJ-REEL7	Circular Connector; No. of Contacts:7; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:16S; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle
AD7912AUJ-REEL7	Circular Connector; No. of Contacts:5; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:16S; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:16S-8 RoHS Compliant: No
AD7912	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs

相關代理商/技術參數	參數描述
AD7911_11	制造商:AD 制造商全稱:Analog Devices 功能描述:2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs
AD7911ARM	制造商:Analog Devices 功能描述:ADC Single SAR 250ksps 10-bit Serial 8-Pin MSOP 制造商:Rochester Electronics LLC 功能描述:DUAL 10-BIT , 250KSPS ADC I.C. - Bulk
AD7911ARM-REEL	制造商:Analog Devices 功能描述:ADC Single SAR 250ksps 10-bit Serial 8-Pin MSOP T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 250KSPS 10-BIT SERL 8MSOP - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:DUAL 10-BIT , 250KSPS ADC I.C. - Tape and Reel
AD7911ARM-REEL7	制造商:Analog Devices 功能描述:ADC Single SAR 250ksps 10-bit Serial 8-Pin MSOP T/R 制造商:Rochester Electronics LLC 功能描述:DUAL 10-BIT , 250KSPS ADC I.C. - Tape and Reel
AD7911ARMZ	功能描述:IC ADC 10BIT DUAL 2CH 8-MSOP RoHS:是類別:集成電路 (IC) >> 數據采集 - 模數轉換器系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝封裝/外殼:24-VFQFN 裸露焊盤供應商設備封裝:24-VQFN 裸露焊盤（4x4）包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6

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