ICS844S42I Datasheet, PDF (13/27 Pages) Integrated Device Technology – On-chip crystal oscillator for reference frequency generation

ICS844S42I Data Sheet
DUAL OUTPUT RF FREQUENCY SYNTHESIZER
Parameter Measurement Information
3.3V±5%
POWER SUPPLY
+ Float GND –
V_DD,
V_DDOA,
V_{DDOB VDDA}
SCOPE
Qx
nQx
3.3V LVDS Output Load AC Test Circuit
2V
2V
V_DD,
V_DDOA,
V_DDOB, V_DDA
GND
SCOPE
Qx
nQx
-1.3V±0.165V
3.3V LVPECL Output Load AC Test Circuit
V_OH
V_REF
1σ contains 68.26% of all measurements
V_OL
2σ contains 95.4% of all measurements
3σ contains 99.73% of all measurements
4σ contains 99.99366% of all measurements
6σ contains (100-1.973x10^-7)% of all measurements
Reference Point
(Trigger Edge)
Histogram
Mean Period
(First edge after trigger)
RMS Period Jitter
nQA, nQB
QA, QB
tcycle n
➤
tcycle n+1
➤
| | tjit(cc) = tcycle n – tcycle n+1
1000 Cycles
Cycle-to-Cycle Jitter
nQx
Qx
nQy
Qy
t sk(o)
Output Skew
nQA, nQB
20%
QA, QB
80%
t_R
80%
t_F
V_{SW I N G}
20%
LVPECL Output Rise/Fall Time
ICS844S42BKI REVISION A FEBRUARY 21, 2012
13
©2012 Integrated Device Technology, Inc.