ICS844071I Datasheet, PDF (5/10 Pages) Integrated Circuit Systems – FEMTOCLOCKS™ CRYSTAL-TO- LVDS CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844071I
FEMTOCLOCKS™CRYSTAL-TO- LVDS
CLOCK GENERATOR
PARAMETER MEASUREMENT INFORMATION
3.3V±5%
POWER SUPPLY
+ Float GND -
LVDS
Qx ^SCOPE
nQx
2.5V±5%
POWER SUPPLY
+ Float GND -
LVDS
Qx ^SCOPE
nQx
LVDS 3.3V OUTPUT LOAD AC TEST CIRCUIT
Clock _20%
Outputs
80%
t_R
80%
t_F
OUTPUT RISE/FALL TIME
V_{SW I N G}
20%
LVDS 2.5V OUTPUT LOAD AC TEST CIRCUIT
nQ
Q
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
Phase Noise Plot
V_DDDD
Phase Noise Mask
DC Input LVDS
f₁ ^{Offset Frequency} f₂
RMS Jitter = Area Under the Masked Phase Noise Plot
out
➤
out
V_OS/Δ V_OS
RMS PHASE JITTER
VV_DD_DD
DC Input LVDS
OFFSET VOLTAGE SETUP
out
➤
100
V_OD/Δ V_OD
out
DIFFERENTIAL OUTPUT VOLTAGE SETUP
844071AGI
www.icst.com/products/hiperclocks.html
5
REV. A JULY 13, 2005