ICS841608I Datasheet, PDF (7/17 Pages) Integrated Device Technology – FEMTOCLOCKS CRYSTAL-TO-HCSL CLOCK GENERATOR VCO: 500MHz

ICS841608I
FEMTOCLOCKS™ CRYSTAL-TO-HCSL CLOCK GENERATOR
PARAMETER MEASUREMENT INFORMATION, CONTINUED
nQ
VCROSS_DELTA = 140mV
Q
VMAX = 1.15V
nQ
VCROSS_MAX = 550mV
VCROSS_MIN = 250mV
Q
VMIN = -0.30V
SINGLE-ENDED MEASUREMENT POINTS FOR DELTA CROSS POINT
0.0V
Q - nQ
Clock Period (Differential)
Positive Duty
Cycle (Differential)
Negative Duty
Cycle (Differential)
DIFFERENTIAL MESUREMENT POINTS FOR DUTY CYCLE PERIOD
SINGLE-ENDED MEASUREMENT POINTS FOR
ABSOLUTE CROSS POINT/SWING
20
0
-3dB
-3dB
1.2MHz
21.9MHz
-20
-40
-60
-80
-100
10⁴
10⁵
10⁶
10⁷
10⁸
Frequency (Hz)
H3(s) * (H1(s) – H2(s))
COMPOSITE PCIe TRANSFER FUNCTION
IDT^™ / ICS^™ HCSL CLOCK GENERATOR
7
ICS841608AKI REV. A JUNE 18, 2008