PLL Circuits

A PLL circuit, or Phase-Locked Loop, features a Voltage-Controlled Oscillator (VCO) whose output is constantly adjusted to match the phase and frequency of an input signal using feedback from a Phase Comparator. A PLL circuit is often used to synchronise (lock) RF receiver circuits to an incoming carrier signal. If a frequency divider n is introduced between the VCO output and the phase comparator, the PLL circuit output frequency will be fin/n, locked in phase to fin. If fin comes from a highly-stable fixed frequency oscillator and n is programmable, then the circuit forms the basis of an accurate Digital Frequency Synthesiser.

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Description Price Number of Elements per Chip Maximum Supply Current Maximum Input Frequency Mounting Type Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Maximum Operating Temperature Maximum Output Frequency Minimum Operating Supply Voltage
RS Stock No. 877-8782
Mfr. Part No.AD800-52BRZ
$53.19
Each
units
1 170 mA - Surface Mount SOIC 20 13 x 7.6 x 2.36mm 13mm 7.6mm 2.36mm -5.5 V +85 °C 51.84MHz -4.5 V
RS Stock No. 160-9963
Mfr. Part No.HMC440QS16GE
$204.729
Each (On a Reel of 50)
units
- 266 mA 1300MHz Surface Mount QSOP 16 5 x 4 x 1.62mm 5mm 4mm 1.62mm 5.2 V +85 °C - 4.8 V
RS Stock No. 862-6124
Mfr. Part No.HMC440QS16GE
$174.22
Each
units
- 266 mA 1300MHz Surface Mount QSOP 16 5 x 4 x 1.62mm 5mm 4mm 1.62mm 5.2 V +85 °C - 4.8 V