(Preliminary)
PL611s-18
0.5kHz-125MHz MHz to KHz Programmable Clock
T M
FEATURES
•
Designed for Very Low-Power applications
•
Offered in Tiny GREEN/RoHS compliant packages
o
6-pin DFN (2.0mmx1.3mmx0.6mm)
o
6-pin SC70 (2.3mmx2.25mmx1.0mm)
o
6-pin SOT23 (3.0mmx3.0mmx1.35mm)
•
Accepts Crystal or Reference Clock inputs
•
Input Frequency:
o
Fundamental crystal: 10MHz to 50MHz
o
Reference Input: 1MHz to 125MHz
•
Accepts >0.1V reference signal input voltage
•
Output Frequency 0.5kHz to 125MHz CMOS.
o
65MHz @ 1.8V operation
o
90MHz @ 2.5V operation
o
125MHz @ 3.3V operation
•
One programmable I/O pin can be configured as
OE, PDB, FSEL or CLK1
•
Low current consumption:
o
<1.0mA with 27MHz & 32kHz outputs
o
< 5 A when PDB is activated
•
Single 1.8V, 2.5V, or 3.3V ± 10% power supply
•
Operating temperature range from -40°C to 85°C
DESCRIPTION
The PL611s-18 is a low-cost general purpose
frequency synthesizer and a member of PhaseLink’s
PicoPLL family, the worlds smallest programmable
clocks. PhaseLink’s PL611s-18 offers the versatility
of using a single Crystal (MHz) or Reference Clock
input and producing up to two (kHz/MHz) system
clocks, or a combination of Reference and low
frequency outputs. The PL611s-18 is designed for
low-power applications with very stringent space
requirements and consumes ~1.0mA, while
producing 2 distinct outputs of 27MHz and 32kHz.
The power down feature of PL611s-18, when
activated, allows the IC to consume less than 5 A of
power.
The PL611s-18 fits in a small DFN, SC70, or SOT23
package. Cascading of the PL611s-18 with other
PhaseLink programmable clocks allow generating
system level clocking requirements, thereby
reducing the overall system implementation cost.
In addition, one programmable I/O pin can be
configured as Output Enable (OE), Frequency
switching (FSEL), Power Down (PDB) input, or CLK1
(CLK0, F
REF
, F
REF
/2) output.
BLOCK DIAGRAM
XIN/FIN
XOUT
XTAL
OSC
Programmable
CLoad
F
REF
R-Counter
(5-bit)
M-Counter
(8-bit)
Phase
Detector
Charge
Pump
Loop
Filter
F
VCO
= F
REF
* (2 * M/R)
VCO
P-Counter
(14-bit)
F
OUT
= F
VCO
/ (2 * P)
Programmable Function
CLK
Programming
Logic
OE, PDB,
FSEL, CLK1
47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991
www.phaselink.com
Rev 2/23/07 Page 1
PLL [ PHASELINK CORPORATION ]
