ICS9173B Datasheet, PDF (1/9 Pages) Integrated Device Technology – VIDEO GENLOCK PLL

VIDEO GENLOCK PLL
DATASHEET
IDT9173B
Description
The IDT9173B provide the analog PLL circuit blocks to
implement a frequency multiplier. Because the device is
configured to use an external divider in the PLL clock
feedback path, a large divider can be used to result in a
large frequency multiplication ratio. This is useful when
using a low frequency input clock to generate a high
frequency output clock. The IDT9173B contains a phase
detector, charge pump, loop filter, and voltage-controlled
oscillator (VCO). The ICS674-01 can be used as the
external feedback divider.
A common application of the IDT9173B is the
implementation of a video genlock circuit. Because of this,
the IDT9173B inputs operate on the negative-going clock
edge.
The IDT9173B is pin and function compatible to the
AV9173-01/15.
Features
• Phase-detector/VCO circuit block
• Ideal for genlock system
• Reference clock range 12 kHz to 1 MHz for full output
clock range
• Output clock range of 1.25 to 75 MHz (-01), and 0.625 to
37.5 MHz (-15). See “Allowable Input Frequency to
Output Frequency” table for conditions
• On-chip loop filter
• Single 5 V power supply
• Low power CMOS technology
• 8-pin SOIC package
Block Diagram
IDT™ VIDEO GENLOCK PLL
1
IDT9173B
REV B 111209