The 0.35-µm BiCMOS fabrication process and careful application of RF design techniques permit the prescaler section of the ADF4106 to operate at up to 6.0 GHz with an input level of –10 dBm (referred to 50 ohms), guaranteed over the industrial temperature range (–40 to +85°C). Figu...
The A (6-bit) and B (13-bit) counters, in conjunction with the dual-modulus prescaler (P/P+1), implement an N-divider (N = BP+A). In addition, the 14-bit reference (R) counter, allows selectable REFIN frequencies at the PFD input. A complete phase-locked loop (PLL) can be ...
9.2.2.3 Synthesizing a Selected Frequency The TRF3761 is an integer-N PLL synthesizer, and because of its flexibility (14-bit RDiv, 6-bit A counter, 13-bit B counter, and dual modulus prescaler), is ideal for synthesizing virtually any desired frequency. If synthesizing a 900MHz local ...
Modulus Prescaler for Lower Divids – RF PLL: 16/17/20/21 or 32/33/36/37 – IF PLL: 8/9 or 16/17 • Advanced Delta Sigma Fractional Compensation – 12-Bit or 22-Bit Selectable Fractional Modulus – Up to 4th Order Programmable Delta-Sigma Modulator • Improved Lock Times and ...
Fractional-Nsynthesizerandinteger-Nsynthesizer Programmabledivide-by-1/-2/-4/-8/-16output 5.0GHzRFbandwidth 3.0Vto3.6Vpowersupply 1.8Vlogiccompatibility Separatechargepumpsupply(VP)allowsextendedtuning voltagein3Vsystems Programmabledual-modulusprescalerof4/5or8/9 ...
去产品选项表 特性 ADF4216: 550 MHz/1.2 GHz ADF4217: 550 MHz/2.0 GHz ADF4218: 550 MHz/2.5 GHz 2.7 V to 5.5 V Power Supply Selectable Charge Pump Currents Selectable Dual Modulus Prescaler IF: 8/9 or 16/17 RF: 32/33 or 64/65 ...
Fractional/Integer-N PLL Basics 27 Technical Brief SWRA029 Figure 18. Integer-N PLL Circuit Detail RF_IN R 32, 33 Prescaler AUX1_IN S 5-bit Counter 11-bit Counter Control Logic 5 11 RA B 3-bit Counter 11-bit Counter R Phase Detector F 2 Charge-Pump Speedup Counter 6 CU 2 Lock ...
Modulus Prescaler for Lower Divids – RF PLL: 16/17/20/21 or 32/33/36/37 – IF PLL: 8/9 or 16/17 • Advanced Delta Sigma Fractional Compensation – 12-Bit or 22-Bit Selectable Fractional Modulus – Up to 4th Order Programmable Delta-Sigma Modulator • Features for Improved Lock ...