IDT, Integrated Device Technology Inc ICS1523M

Description
The ICS1523 is a low-cost, high-performance frequency generator designed for general-purpose phase-controlled clock synthesis and high-resolution video applications. It supports clock outputs in both differential (up to 250 MHz) and single-ended (up to 150 MHz) formats. The Dynamic Phase Adjust (DPA) feature allows precise control of the output clock's phase relative to the input sync signal. The device also provides a second, half-speed set of outputs for applications such as clocking analog-to-digital converters.
The ICS1523 utilizes an advanced PLL with either an internal programmable feedback divider or an external divider. It offers software-selectable internal or external loop filters. The COAST input pin can disable the PLL's charge pump, allowing the device to idle at the current speed during short periods, such as vertical blanking intervals.

Features
Low jitter
Wide input frequency range (15.734 kHz to 100 MHz)
PECL differential outputs (up to 250 MHz)
SSTL 3 single-ended clock outputs (up to 150 MHz)
Dynamic Phase Adjust (DPA) for all outputs
12C-controlled phase adjustment
Full clock cycle down to 1/64 of a clock
Double-buffered control registers
External or internal loop filter selection
COAST input to disable charge pump
3.3 VDD
5-volt tolerant inputs
Industry-standard I²C-bus programming interface
PLL lock detection via I²C or LOCK/REF output pin
24-pin 300-mil SOIC package

Applications
Frequency synthesis
LCD monitors, video projectors, and plasma displays
Genlocking multiple video subsystems