ICS87421I Datasheet, PDF (6/14 Pages) Integrated Device Technology – ÷1/÷2 DIFFERENTIAL-TO-LVDS CLOCK GENERATOR

ICS87421I
÷1/÷2 DIFFERENTIAL-TO-LVDS CLOCK GENERATOR
PARAMETER MEASUREMENT INFORMATION
3.3V
3.3V±5%
POWER SUPPLY
+ Float GND –
V_DD
LVDS
SCOPE
Qx
nQx
3.3V OUTPUT LOAD AC TEST CIRCUIT
PART 1
nQx
Qx
PART 2
nQy
Qy
t sk(pp)
V_DD
nCLK
V
PP
CLK
Cross Points
GND
DIFFERENTIAL INPUT LEVEL
nCLK
CLK
nQ
Q
t_PD
V
CMR
PART-TO-PART SKEW
Clock
20%
Outputs
80%
t_R
OUTPUT RISE/FALL TIME
V_DD
DC Input LVDS
80%
t_F
V_{SW I N G}
20%
out
➤
100
V_OD/Δ V_OD
out
PROPAGATION DELAY
nQ
Q
t _PW
t
PERIOD
odc = ^{t PW} x 100%
t _PERIOD
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
V_DD
out
DC Input LVDS
out
DIFFERENTIAL OUTPUT VOLTAGE SETUP
OFFSET VOLTAGE SETUP
➤
V_OS/Δ V_OS
IDT^™ / ICS^™ LVDS CLOCK GENERATOR
6
ICS87421AMI REV. A OCTOBER 3, 2007