ICD2053B
Key Features
- Clock outputs ranging from 391 kHz to 100 MHz (TTL levels) or 90 MHz (CMOS levels)
- 2-wire serial interface facilitates programmable output frequency
- Phase-Locked Loop oscillator input derived from external reference clock (1 MHz to 25 MHz) or External Crystal (2 MHz to 24 MHz)
- Three-State output control disables output for test purposes
- Sophisticated internal loop filter requires no external components or manufacturing tweaks as commonly required with external filters
- Low power consumption makes device ideal for powerand space-critical applications
- 8-pin 150-mil packaging achieves minimum footprint for space-critical applications
- 5V operation
- High-speed CMOS technology Functional Description The ICD2053B Programmable Clock Generator offers a fully user-programmable phase-locked loop in a single 8-pin package. The output may be changed “on the fly” to any desired frequency value between 391 kHz and 100 MHz (90 MHz at CMOS levels). The ICD2053B is ideally suited for any design in which package size, power, and/or frequency programmability are important design issues. The ability to dynamically change the output frequency adds a whole new degree of freedom for the designer. Some examples of the uses for this device include: laptop computers, in which slowing the speed of operation can mean less power consumption; graphics board dot clocks to allow dynamic synchronization of different brands of monitors or display formats; on-board test strategies where the ability to skew a system’s desired frequency (e.g., ±10%) allows worst-case evaluation. Logic Block Diagram
