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TI's new high-frequency Phase Lock Loop (PLL) is capable of locking up to 50 MHz at 5V or 21 MHz at 3V.
The TLC2932 contains an edge triggered phase/frequency detector (PFD), a voltage controlled oscillator (VCO) with selectable outputs of 1x or 1/2x, along with control pins to inhibit either the PFD or VCO sections.
The high-frequency locking and low jitter (50 ps typical) make the TLC2932 suitable for many performance-demanding applications such as clock recovery systems, MPEG audio and video, QAM & QPSK demodulators, digital settop box, analog and digital video and wireless applications.
Design flexibility is a key feature of this new device. The PFD and VCO sections have independent inhibit pins to allow use of either individually. Also, the inhibit function can be used to reduce power in battery applications. A counter, if required, can easily be connected externally for frequency modification. PFD output filtering, such as lag, lead-lag, or integrator, is also external to allow the designer complete control over the filter type.
TLC2932 14-pin TSSOP $2.28
Suggested resale pricing in 1K quantities.
July - August 1995, vol. 12, no. 5