9ZXL1950 DATASHEET
Electrical Characteristics–DIF 0.7V Low Power Differential Outputs
TA = TCOM; Supply Voltage VDD/VDDA = 3.3 V +/-5%, VDDIO = 1.05 to 3.3V +/-5%. See Test Loads for Loading Conditions
PARAMETER
SYMBOL
Trf
CONDITIONS
MIN
1.5
TYP MAX UNITS NOTES
V/ns
%
Slew rate
Slew rate matching
Scope averaging on
Slew rate matching.
2.7
8.8
4
20
1, 2, 3
1, 2, 4
∆
Trf
Statistical measurement on single-ended signal
using oscilloscope math function. (Scope
averaging on)
Voltage High
Voltage Low
VHigh
VLow
660
787
33
850
mV
-150
150
Max Voltage
Min Voltage
Crossing Voltage (abs)
Crossing Voltage (var)
Vmax
Vmin
Vcross_abs
Single ended signal using absolute value.
Includes 300mV of over/undershoot. (Scope
845
9
471
14
1150
mV
-300
250
Scope averaging off
Scope averaging off
550
140
mV
mV
1, 5
1, 6
∆
-Vcross
1
Ω
Guaranteed by design and characterization, not 100% tested in production. CL = 2pF with Zo = 85 differential trace impedance.
2 Measured from differential waveform
3 Slew rate is measured through the Vswing voltage range centered around differential 0V. This results in a +/-150mV window around
differential 0V.
4 Matching applies to rising edge rate for Clock and falling edge rate for Clock#. It is measured using a +/-75mV window centered on
the average cross point where Clock rising meets Clock# falling. The median cross point is used to calculate the voltage thresholds the
oscilloscope is to use for the edge rate calculations.
5 Vcross is defined as voltage where Clock = Clock# measured on a component test board and only applies to the differential rising
edge (i.e. Clock rising and Clock# falling).
6 The total variation of all Vcross measurements in any particular system. Note that this is a subset of Vcross_min/max (Vcross
∆
absolute) allowed. The intent is to limit Vcross induced modulation by setting -Vcross to be smaller than Vcross absolute.
Clock Periods–Differential Outputs with Spread Spectrum Disabled
Measurement Window
1 Clock
1us
-SSC
0.1s
- ppm
0.1s
0.1s
+ ppm
Long-Term
Average
Max
1us
+SSC
Short-Term
Average
Max
1 Clock
Center
Freq.
MHz
SSC OFF
-c2c jitter
AbsPer
Min
0 ppm
Period
Nominal
+c2c jitter Units Notes
AbsPer
Max
Short-Term Long-Term
Average
Min
Average
Min
100.00
133.33
9.94900
7.44925
9.99900
7.49925
10.00000
7.50000
10.00100
7.50075
10.05100
7.55075
ns
ns
1,2,3
1,2,4
DIF
Clock Periods–Differential Outputs with Spread Spectrum Enabled
Measurement Window
1 Clock
1us
-SSC
0.1s
- ppm
0.1s
0.1s
+ ppm
Long-Term
Average
Max
1us
+SSC
Short-Term
Average
Max
1 Clock
Center
Freq.
MHz
SSC ON
-c2c jitter
AbsPer
Min
0 ppm
Period
Nominal
+c2c jitter Units Notes
AbsPer
Max
Short-Term Long-Term
Average
Min
Average
Min
99.75
133.00
9.94906
7.44930
9.99906
7.49930
10.02406
7.51805
10.02506
7.51880
10.02607
7.51955
10.05107
7.53830
10.10107
7.58830
ns
ns
1,2,3
1,2,4
DIF
Notes:
1 Guaranteed by design and characterization, not 100% tested in production.
2 All Long Term Accuracy specifications are guaranteed with the assumption that the input clock complies with CK420BQ/CK410B+
accuracy requirements (+/-100ppm). The 9ZXL1950 itself does not contribute to ppm error.
3
Driven by SRC output of main clock, 100 MHz PLL Mode or Bypass mode
4
Driven by CPU output of main clock, 133 MHz PLL Mode or Bypass mode
REVISION E 11/20/15
7
19-OUTPUT DB1900Z LOW-POWER DERIVATIVE W/85OHM TERMINATIONS