CY28312B-2T SPECTRALINEAR [SpectraLinear Inc], CY28312B-2T Datasheet - Page 15

• Manufacturer Part Number: CY28312B-2T
• Manufacturer: SPECTRALINEAR [SpectraLinear Inc]

Rev 1.0, November 21, 2006
AGP Clock Outputs (Lump Capacitance Test Load = 30 pF) (continued)
REF Clock Outputs (Lump Capacitance Test Load = 20 pF)
48-MHz Clock Output (Lump Capacitance Test Load = 20 pF)
24-MHz Clock Output (Lump Capacitance Test Load = 20 pF)
t
f
Z
f
t
t
t
f
Z
f
f
m/n
t
t
t
f
Z
f
f
m/n
t
t
t
f
Z
Parameter
SK
ST
R
F
D
ST
D
R
F
D
ST
D
R
F
D
ST
Parameter
Parameter
Parameter
o
o
o
o
Output Skew
Frequency Stabilization
from Power-up (cold start)
AC Output Impedance
Frequency, Actual
Deviation from 48 MHz
PLL Ratio
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
Frequency Stabilization
from Power-up (cold start)
AC Output Impedance
Frequency, Actual
Deviation from 24 MHz
PLL Ratio
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
Frequency Stabilization
from Power-up (cold start)
AC Output Impedance
Frequency, Actual
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
Frequency Stabilization from
Power-up (cold start)
AC Output Impedance
Description
Description
Description
Description
Measured on rising edge at 1.5V
Assumes full supply voltage reached within 1 ms from
power-up. Short cycles exist prior to frequency stabilization.
Average value during switching transition. Used for
determining series termination value.
Determined by PLL divider ratio (see m/n below)
(48.008 – 48)/48
(14.31818 MHz x 57/17 = 48.008 MHz)
Measured from 0.8V to 2.0V
Measured from 2.0V to 0.8V
Measured on rising and falling edge at 1.5V
Assumes full supply voltage reached within 1 ms
from power-up. Short cycles exist prior to
frequency stabilization.
Average value during switching transition. Used
for determining series termination value.
Determined by PLL divider ratio (see m/n below)
(24.004 – 24)/24
(14.31818 MHz x 57/34 = 24.004 MHz)
Measured from 0.8V to 2.0V
Measured from 2.0V to 0.8V
Measured on rising and falling edge at 1.5V
Assumes full supply voltage reached within 1 ms
from power-up. Short cycles exist prior to
frequency stabilization.
Average value during switching transition. Used
for determining series termination value.
Frequency generated by crystal oscillator
Measured from 0.8V to 2.0V
Measured from 2.0V to 0.8V
Measured on rising and falling edge at 1.5V
Assumes full supply voltage reached within 1 ms
from power-up. Short cycles exist prior to
frequency stabilization.
Average value during switching transition. Used
for determining series termination value.
Test Condition/Comments
Test Condition/Comments
Test Condition/Comments
Test Condition/Comments
Min.
Min.
Min.
0.5
0.5
0.5
0.5
0.5
0.5
45
45
45
Min.
14.318
48.008
24.004
CY28312B-2
57/17
57/34
+167
+167
Typ.
Typ.
Typ.
Typ.
40
40
40
30
Page 15 of 17
Max.
Max.
Max.
Max.
300
55
55
55
3
2
2
3
2
2
3
2
2
3
MHz
V/ns
V/ns
MHz
V/ns
V/ns
MHz
V/ns
V/ns
Unit
ppm
Unit
ppm
Unit
Unit
ms
ms
ms
ms
%
%
%
ps