ZL40220 Data Sheet
16
Microsemi Corporation
3.5 Power Supply
This device operates with either a 2.5V supply or 3.3V supply.
3.5.1 Sensitivity to power supply noise
Power supply noise from sources such as switching power supplies and high-power digital components such as
FPGAs can induce additive jitter on clock buffer outputs. The ZL40220 is equipped with a low drop out (LDO) linear
power regulator and on-chip bulk capacitors to minimize additive jitter due to power supply noise. The on-chip
measures in combination with the simple recommended power supply filtering and PCB layout minimize additive
jitter from power supply noise.
3.5.2 Power supply filtering
For optimal jitter performance, the ZL40220 should be isolated from the power planes connected to its power
supply pins as shown in Figure 19.
10 µF capacitors should be size 0603 or size 080
5 X5R or X7R ceramic, 6.3 V minimum rating
0.1 µF capacitors should be
size 0402 X5R ceramic, 6.3 V minimum rating
Capacitors should be placed next to the
connected device power pins
VDD
0.15 Ohms
10 µF
0.1 µF
0.1 µF
0.1 µF
ZL40220
11
16
18
23
0.1 µF
10 µF
25
30
Figure 19 - Decoupling Connections for Power Pins
3.5.3 PCB layout considerations
The power supply filtering shown in Figure 19 can be implemented either as a plane island, or as a routed power
topology with similar performance.
Absolute Maximum Ratings*
Parameter Sym. Min. Max. Units
1 Supply voltage V
DD_R
-0.5 4.6 V
2 Voltage on any digital pin V
PIN
-0.5 V
DD
V
3 Soldering temperature T 260 °C
4 Storage temperature T
ST
-55 125 °C
5 Junction temperature T
j
125 °C
6 Voltage on input pin V
input
V
DD
V
7 Input capacitance each pin C
p
500 fF
ZL40220 Data Sheet
17
Microsemi Corporation
4.0 AC and DC Electrical Characteristics
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
* Voltages are with respect to ground (GND) unless otherwise stated
Recommended Operating Conditions*
Characteristics Sym. Min. Typ. Max. Units
1 Supply voltage 2.5 V mode V
DD25
2.375 2.5 2.625 V
2 Supply voltage 3.3 V mode V
DD33
3.135 3.3 3.465 V
3 Operating temperature T
A
-40 25 85 °C
* Voltages are with respect to ground (GND) unless otherwise stated
DC Electrical Characteristics - Current Consumption
Characteristics Sym. Min. Typ. Max. Units Notes
1 Supply current LVDS drivers -
loa
ded (all outputs are active)
I
dd_load
95 mA
DC Electrical Characteristics - Inputs and outputs - for 2.5/3.3 V supply
Characteristics Sym. Min. Typ. Max. Units Notes
1 CMOS control logic high-level
input V
CIH
0.7*V
DD
V
2 CMOS control logic low
-level input V
CIL
0.3*V
DD
V
3 CMOS control logic Input leakage
current
I
IL
1 µA V
I
= V
DD
or 0 V
4 Differential input voltage V
ID
0.25 1 V
5 Differential input common mode V
ICM
1.1 1.6 V for 2.5 V
6 Differential input common mode V
ICM
1.1 2.0 V for 3.3 V
7 LVDS output differential voltage* V
OD
0.25 0.30 0.40 V
8 LVDS output common mode V
CM
1.1 1.25 1.375 V
* The VOD parameter was measured from 125 MHz to 750 MHz.
2*V
OD
V
OD
AC Electrical Characteristics* - Inputs and Outputs (see Figure 21) - for 2.5/3.3 V supply.
Characteristics Sym. Min. Typ. Max. Units Notes
1 Maximum Operating Frequency 1/t
p
750 MHz
2 Input to output clock propagation delay t
pd
0 1 2 ns
3 Output to output skew t
out2out
80 150 ps
4 Part to part output skew t
part2part
120 300 ps
5 Output clock Duty Cycle degradation t
PWH
/ t
PWL
-5 0 5 Percent
6 LVDS Output slew rate r
SL
0.55 V/ns
7 Reference transition time t
switch
2 3 us
ZL40220 Data Sheet
18
Microsemi Corporation
Figure 20 - Differential Voltage Parameter
* Supply voltage and operating temperature are as per Recommended Operating Conditions
Input
t
P
t
REFW
t
pd
t
REFW
Output
Figure 21 - Input To Output Timing

ZL40220LDG1

Mfr. #:
Manufacturer:
Microchip / Microsemi
Description:
Clock Buffer 2:6 LVDS Fanout Buffer w/Ext. Term.
Lifecycle:
New from this manufacturer.
Delivery:
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