ABPX1101 Datasheet, PDF (1/6 Pages) Abracon Corporation – Advanced Programmable Clock

ABPX1101
Advanced Programmable Clock
FEATURES
PIN CONFIGURATION
• Advanced programmable PLL design
• Very low Jitter and Phase Noise (30-70ps Pk-Pk typical)
• Up to 3 programmable outputs
• Two registers banks for 2-time programming.
• Output frequency up to 200MHz CMOS.
• Accepts Crystal or reference clock inputs
o Fundamental crystal: 10MHz-30MHz
o 3^RD overtone crystal: Up to 75MHz
o Reference input: Up to 200MHz
• Accepts <1.0V reference signal input voltage
• One programmable I/O pin can be configured as
Programmable clock, or Frequency Selection input,
or output Enable (OE) or Power Down (PDB) input.
• Single 2.5V or 3.3V ± 10% power supply
• Operating temperature range from -40°C to 85°C
• Available in 8-pin MSOP/SOIC, and 6-pin SOT
XIN/FIN 1
GND 2
CLK0 3
CLK1 4
8 XOUT
7 CLK2,OE,PDB,FSEL
6 NC
5 VDD
SOP-8
MSOP-8
CLK0 1
GND 2
XIN/FIN 3
6 VDD
5 CLK2,OE,PDB,FSEL
4 XOUT
SOT-23
DESCRIPTION
The ABPX1101 is a low-cost general purpose frequency synthesizer and a member of Abracons’ Advanced
Programmable Clock family. Abracon’s ABPX1101 product family offers the versatility of using a single Crystal or
Reference Clock input and producing up to three different system clocks. They can generate any output
frequency up to 200 MHz from fundamental crystal input between 10 MHz - 30 MHz, or a 3rd overtone crystal of
up to 75Mhz, or a Reference clock input of up to 200 MHz. Cascading of the ICs to produce additional clock
frequencies is also supported.
BLOCK DIAGRAM
XIN/FIN
XOUT
Xtal ^FRef R-counter
OSC
(8-bit)
M - counter
(10-bit)
Phase
Detector
Charge
Pump
Loop
Filter
F_VCO = F _Ref. * (2 * M /R)
FSEL
OE
PDB
CLoad
P-counter
(5-bit)
F_out = F_VCO / (2 * P)
Programmable Function
Selectable
/1,/2,/4,/8
Selectable
/1,/2
VCO
CLOCK[0:2]
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: [phone] www.Abracon.com 03/15/05 Page 1