AD8027ART-EBZ datasheet(25/27 Pages) AD

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Data Sheet

AD8027/AD8028

APPLICATIONS INFORMATION

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Rev. E | 25 of 27

dB pass band of 500 kHz. To start the design, select fO, Q, C1, and

R4. Then use the following equations to calculate the remaining

variables:

Q= fO (MHz)

Band Pass (MHz)

(8)

k = 2πfOC1

(9)

C2 = 0.5C1

(10)

R1 = 2/k, R2 = 2/(3k), R3 = 4/k

(11)

H = 1/3(6.5 − 1/Q)

(12)

R5 = R4/(H − 1)

(13)

Figure 67. Band-Pass Filter Schematic

The test data shown in Figure 68 indicates that this design yields

a filter response with a center frequency of fO = 1 MHz, and a

bandwidth of 450 kHz.

Figure 68. Band-Pass Filter Response

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