AT86RF211SDK E2V, AT86RF211SDK Datasheet - Page 11

• Manufacturer Part Number: AT86RF211SDK
• Description: KIT DEV FOR AT86RF211/915MHZ
• Manufacturer: E2V
• Series: Smart RFr
• Type: Transceiverr

Specifications of AT86RF211SDK

• Frequency: 915MHz
• For Use With/related Products: AT86RF211 @ 915MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AT86RF211-DK; AT86RF211-DK915107; AT86RF211DK; AT86RF211DK915107; AT86RF211DK915107

2. Detailed Description
2.1
2.1.1
Figure 2-2.
5348B–WIRE–03/06
C L = 16 pF
Frequency Synthesis
Crystal Reference Oscillator
15 pF
(1)
Typical Networks
XTAL1
C1 = 82 pF
6.5/30 pF
The reference clock is based on a classic Colpitts architecture with three external
capacitors.
The bias circuitry of the oscillator is optimized to produce a low drive level for the XTAL.
This reduces XTAL aging.
Note:
Figure 2-1.
Notes:
Any parallel-mode 10.245, 20.5 or 20.945 MHz crystal can be used. Its load capacitance
must be between 10 and 20 pF.
(2)
XTAL2
C2 = 56 pF
The PLL is only activated when the oscillator is stabilized.
1. Various load capacitance (C
2. Thanks to the synthesizer’s fine steps (200 Hz), the trimmer capacitor can be
surrounding network (C1, C2) must be re-calculated.
replaced by adjusting the software.
Crystal Oscillator Inputs
R = 3.3 kΩ
C L = 20 pF
XTAL2
XTAL1
33 pF
(1)
L
) crystals can be used. If C
XTAL1
C1 = 68 pF
6.5/30 pF
(2)
XTAL2
L
AT86RF211S
differs from 16 or 20 pF, the
C2 = 68 pF
R = 3.3 kΩ
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