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AD6684 Datasheet(PDF) 21 Page - Analog Devices |
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AD6684 Datasheet(HTML) 21 Page - Analog Devices |
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21 / 107 page  Data Sheet AD6684 Rev. 0 | Page 21 of 107 EQUIVALENT CIRCUITS AIN CONTROL (SPI) 10pF VIN+x 100Ω VIN–x AVDD3 AVDD3 VCM BUFFER 400Ω 100Ω AVDD3 AVDD3 3.5pF AVDD3 3.5pF Figure 45. Analog Inputs AVDD1 25Ω AVDD1 25Ω 16kΩ 16kΩ VCM = 0.69V CLK+ CLK– Figure 46. Clock Inputs 130kΩ 130kΩ LEVEL TRANSLATOR SYSREF+ 10kΩ 1.9pF 1.9pF 100Ω SYSREF– 10kΩ 100Ω Figure 47. SYSREF± Inputs DRVDD DRGND DRVDD DRGND OUTPUT DRIVER EMPHASIS/SWING CONTROL (SPI) DATA+ DATA– SERDOUTABx+/ SERDOUTCDx+ x = 0, 1 SERDOUTABx–/ SERDOUTCDx– x = 0, 1 Figure 48. Digital Outputs 130kΩ 130kΩ LEVEL TRANSLATOR SYNCINB+AB/ SYNCINB+CD SYNCINB–AB/ SYNCINB–CD 10kΩ 1.9pF 1.9pF 100Ω 2.5kΩ 10kΩ 100Ω DRVDD DRGND DRVDD DRGND DRVDD DRGND DRGND DRGND CMOS PATH SYNCINB PIN CONTROL (SPI) Figure 49. SYNCINB±AB, SYNCINB±CD Inputs 56kΩ DGND DGND SPIVDD ESD PROTECTED ESD PROTECTED SPIVDD SCLK Figure 50. SCLK Input 56kΩ DGND DGND ESD PROTECTED ESD PROTECTED SPIVDD CSB Figure 51. CSB Input |
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