EZLC-4421 LB Silicon Laboratories Inc, EZLC-4421 LB Datasheet - Page 12

• Manufacturer Part Number: EZLC-4421 LB
• Description: Wireless Accessories EZLink Fast Prototype Kit Lwband
• Manufacturer: Silicon Laboratories Inc

Specifications of EZLC-4421 LB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Note 1: Measured with disabled clock output buffer
Note 2: Not using a 10 MHz crystal is allowed but not recommended because all crystal referred timing and frequency parameters
Note 3: See the BER diagrams in the measurement results section (page 37) for detailed information
Note 4: See reference design with 50 Ohm Matching Network (page 39) for details
Note 5: See reference design with Resonant PCB Antenna (BIFA) on page 41 for details
Note 6: Optimal antenna admittance/impedance:
Note 7: Adjustable in 8 steps
Note 8: During the Power-On Reset period, commands are not accepted by the chip. In case of software reset (see Wake-Up Timer
Note 9: The crystal oscillator start up time strongly depends on the capacitance seen by the oscillator. Low capacitance and low
Note 10: By design
will change accordingly
Command, page 25) the reset timeout is 0.25ms typical.
ESR crystal is recommended with low parasitic PCB layout design.
Si4421
433 MHz
868 MHz
915 MHz
Y
1.49 - j12.8
1.2 - j11.9
antenna
2 – j5.9
[mS]
Z
antenna
52 + j152
7.8 + j83
9 + j77
[Ohm]
L
antenna
15.4
13.6
62
[nH]
Si4421
12