BCM43143KMLGT Datasheet, PDF (16/58 Pages) Cypress Semiconductor – Single-Chip IEEE 802.11b/g/n MAC/PHY/Radio with USB/SDIO Host Interface

BCM43143 Advance Data Sheet
Crystal Oscillator
Crystal Oscillator
Table 1 lists the requirements for the crystal oscillator.
Parameter
Frequency
Mode
Load capacitance
ESR
Frequency stability
Aging
Drive level
Q-factor
Shunt capacitance
Table 1: Crystal Oscillator Requirements
Value
20 MHz
AT cut, fundamental
16 pF
50Ω maximum
±10 ppm at 25°C
±10 ppm at 0°C to +85°C
±3 ppm/year maximum the first year, ±1 ppm thereafter
300 µW maximum
40,000 minimum
< 5 pF
Figure 5 shows the recommended oscillator configuration.
Figure 5: Recommended Oscillator Configuration
27 pF
Crystal
20 MHz 10 ppm
Note: Refer to reference
27 pF
220
schematics for design-
specific details.
XTAL_OP_IN
XTAL_ON_OUT
Note: The component values referenced in Figure 5 are only recommended values and the correct
values will have to be characterized on a per board basis. Please see the reference board schematic
for the correct characterized values.
Broadcom^®
November 14, 2014 • 43143-DS104-R
Single-Chip IEEE 802.11b/g/n MAC/PHY/Radio
Page 15