AT86RF211SDK E2V, AT86RF211SDK Datasheet - Page 13

• 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

Figure 2-3.
2.1.3
5348B–WIRE–03/06
Synthesizer
MCU Clocking Capability
Slow Clock
Internal
MCU
SLE, SCK, SDATA for Setup
Refer to “Control Logic” on page 34 for more information.
A high-speed, high-resolution multi-loop synthesizer is integrated. The synthesizer can
operate within two frequency bands: 400 to 480 MHz and 800 to 950 MHz. All channels
within these two bands can be selected by programming registers F0 to F3. All circuitry
is on-chip with the exception of the PLL loop filter. The phase comparison is made
thanks to a charge pump topology. The typical charge pump current is 225 µA.
Figure 2-4.
The PLL loop filter can be designed to optimize the phase noise around the carrier. A
few configurations for the application and channel spacing can be suggested.
3
can be spared
MCU crystal
Output DIGOUT
Synthesizer Loop Filter Schematic
Buffered XTO
Fref
R1
C1
FILT1
AT86RF211S
P F D
C H P
&
1, 2, 4, 8
Divider
C2
VCOIN
VCO
or 20.945 MHz
AT86RF211S
10.245
20.500
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