Specifications | Temperature | C |
| Voltage | 5.0 V |
| Package | TSSOP 20 |
| Speed | NA |
| Spread Spectrum | Yes |
| VCXO | No |
| Output Style | SE |
| Input Style | Crystal |
| Max. Output Frequency | 200 MHz |
| Min. Output Frequency | 0.314 MHz |
| Max. Input Frequency | 150 MHz |
| Min. Input Frequency | 3 MHz |
| Temp. Grade | C |
| Core Supply Voltage (VDD) | 3.3V |
| Output Supply Voltage (VDDO) | 1.8V - 3.3V |
| No. of Outputs | 6 |
| No. of Inputs | |
DescriptionTRIPLE PLL FIELD PROGRAMM
The ICS291 field programmable spread spectrum clock synthesizer generates up to six high-quality, high-frequency clock outputs including multiple reference clocks from a low-frequency crystal input. 291PGT is designed to replace crystals, crystal oscillators and stand alone spread spectrum devices in most electronic systems.
Using IDT's VersaClock? software to configure PLLs and outputs, the ICS291 contains a One-Time Programmable (OTP) ROM for field programmability. Programming features of 291PGT include input/outputfrequencies, spread spectrum amount, eight selectable configuration registers and up to two sets of three low-skew outputs.
Each of the two output groups are powered by a separate VDDO voltage. VDDO may vary from 1.8 V to VDD.
Using Phase-Locked Loop (PLL) techniques, 291PGT runs from a standard fundamental mode, inexpensive crystal, or clock. It can replace multiple crystals and oscillators, saving board space and cost.
The ICS291 is also available in factory programmed custom versions for high-volume applications.
Packaged as 20-pin TSSOP
Eight addressable registers
Replaces multiple crystals and oscillators
Output frequencies up to 200 MHz at 3.3 V
Configurable Spread Spectrum Modulation
Input crystal frequency of 5 to 27 MHz
Clock input frequency of 3 to 166 MHz
Up to six reference outputs
Separate 1.8 to 3.3 V VDDO output level controls for each bank of 3 outputs
Up to two sets of three low-skew outputs
Operating voltages of 3.3 V
Controllable output drive levels
Advanced, low-power CMOS process
Available in Pb (lead) free packaging
click here for VersaClock Software page
291PGT Data Sheet
