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AD9550/PCBZ Datasheet(PDF) 13 Page - Analog Devices |
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AD9550/PCBZ Datasheet(HTML) 13 Page - Analog Devices |
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13 / 20 page ![]() AD9550 Rev. 0 | Page 13 of 20 Table 6. Pin Configured Input Frequency, Ax Pins A3 to A0 f REF (MHz) Divide-by-51 ×21 R (Decimal) 0000 Not used 0001 0.008 Bypassed On 1 0010 1.536 Bypassed Bypassed 96 0011 2.048 Bypassed Bypassed 128 0100 16.384 Bypassed Bypassed 1024 0101 19.44 Bypassed Bypassed 1215 0110 2 25 Bypassed On 3125 0111 38.88 Bypassed Bypassed 2430 1000 61.44 Bypassed Bypassed 3840 1001 77.76 Bypassed Bypassed 4860 1010 122.88 Bypassed Bypassed 7680 1011 125 On On 3125 1100 1.544 Bypassed On 193 11013 155.52 Bypassed Bypassed 59 11104 25 or 77.76 Bypassed Bypassed 16 1111 200/3 Bypassed Bypassed 5000 1 For divide-by-5 and ×2 frequency scalers, on indicates active. 2 Using A3 to A0 = 0110 to yield a 25 MHz to 125 MHz conversion provides a loop bandwidth of 170 Hz. An alternate 25 MHz to 125 MHz conversion uses A3 to A0 = 1110, which provides a loop bandwidth of 20 kHz. 3 A3 to A0 = 1101 only works with Y5 to Y0 = 101101 through 110010. 4 A3 to A0 = 1110 only works with Y5 to Y0 = 110011 or 111111. Table 7. Pin Configured Output Frequency, Yx Pins Y5 to Y0 f VCO (MHz) f OUT1 (MHz) f OUT2 (MHz) P 0 P 1 P 2 000000 Not used 000001 3686.4 245.76 245.76 5 3 3 000010 3686.4 245.76 122.88 5 3 6 000011 3686.4 245.76 61.44 5 3 12 000100 3686.4 245.76 16.384 5 3 45 000101 3686.4 245.76 2.048 5 3 360 000110 3686.4 245.76 1.536 5 3 480 000111 3686.4 122.88 122.88 5 6 6 001000 3686.4 122.88 61.44 5 6 12 001001 3686.4 122.88 16.384 5 6 45 001010 3686.4 122.88 2.048 5 6 360 001011 3686.4 122.88 1.536 5 6 480 001100 3686.4 61.44 61.44 5 12 12 001101 3686.4 61.44 16.384 5 12 45 001110 3686.4 61.44 2.048 5 12 360 001111 3686.4 61.44 1.536 5 12 480 010000 3686.4 16.384 16.384 5 45 45 010001 3686.4 16.384 2.048 5 45 360 010010 3686.4 16.384 1.536 5 45 480 010011 3686.4 2.048 2.048 5 360 360 010100 3686.4 2.048 1.536 5 360 480 010101 3686.4 1.536 1.536 5 480 480 010110 3750 156.25 156.25 6 4 4 010111 3750 156.25 125 6 4 5 011000 3750 156.25 25 6 4 25 011001 3750 125 125 6 5 5 011010 3750 125 25 6 5 25 011011 3750 25 25 6 25 25 011100 3732.48 155.52 155.52 6 4 4 |
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