19-6068; Rev 1; 10/11
Spread-Spectrum Crystal Multiplier
DS180CL
General Description
Features
The DS1080CL is a low-jitter, crystal-based clock gen-
erator with an integrated phase-locked loop (PLL) to
generate spread-spectrum clock outputs from 8MHz to
64MHz. The device is pin programmable to select the
clock multiplier rate as well as the dither magnitude.
The DS1080CL has a spread-spectrum disable mode
and a power-down mode to conserve power.
♦ Generates Spread-Spectrum Clocks from 8MHz to
64MHz
♦ Selectable Clock Multiplier Rates of 1x, 2x, and 4x
♦ Center Spread-Spectrum Dithering
♦ Selectable Spread-Spectrum Modulation
Magnitudes of ±±.ꢀ5, ±1.±5, and ±1.ꢀ5
Applications
♦ Spread-Spectrum Disable Mode
♦ Low Cycle-to-Cycle Jitter
Automotive
Copiers
Infotainment
PCs
Cable Modems
Cell Phones
♦ Power-Down Mode with High-Impedance Output
♦ Low-Power Consumption
Computer Peripherals
Printers
♦ 3.±V to 3.6V Single-Supply Operation
♦ -4±°C to +12ꢀ°C Temperature Operation
Pin Configuration
♦ Small 8-Pin µSOP Package
TOP VIEW
Ordering Information
+
X1
GND
1
2
3
4
8
7
6
5
X2
PART
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
8 μSOP
DS1080CLU+
DS1080CLU+T
DS1080CLU/V+
DS1080CLU/V+T
V
CC
DS1080CL
8 μSOP
CMSEL
SMSEL
SSO
PDN
8 μSOP
8 μSOP
+Denotes a lead-free package.
/V denotes an automotive qualified part.
T = Tape and reel.
Typical Operating Circuit
CRYSTAL
C
C
L2
L1
X1
X2
V
1
2
3
4
8
7
6
5
CC
GND
CMSEL
SMSEL
V
CC
DS1080CL
DECOUPLING
CAPACITOR
SSO
PDN
f
SSO
V
CC
NOTE: IN THE ABOVE CONFIGURATION WITH PDN CONNECTED TO V , SMSEL CONNECTED TO GND, AND CMSEL OPEN, THE DEVICE IS IN NORMAL
CC
OPERATION WITH 2x CLOCK MULTIPLICATION AND A SPREAD-SPECTRUM MAGNITUDE OF 0.5%.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.