AT86RF211SDK E2V, AT86RF211SDK Datasheet - Page 23

• 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 2-18. Data Slicing Parameters Setup Example
5348B–WIRE–03/06
Demodulated
DISCOUT:
Data
Figure 2-17. Data Slicer Schematics
To operate this way, one must make sure that the 0 and 1 levels at the output of the dis-
criminator appear "on both sides" of the comparison level in order for the decision to be
made properly.
To set the discriminator and data slicer accordingly:
These procedures are made automatically by the software. Refer to the Application
Note "
• The output DC level of the discriminator DISCOUT can be measured (using the A/D
• The DC level can be shifted up or down at the output of the discriminator through the
• The comparison threshold can be tuned around V
embedded converter)
DTR[1:0] bit:
levels are possible, with an LSB equal to 15 mV per volt of supply voltage. V
corresponds to DTR[5:2] = 0111, and the RESET value is 1000.
– DTR[1] = 1: +180 mV + 77 × (V
– DTR[0] = 1: -180 mV - 77 × (V
“Data Demodulation and Crystal Selection for the AT86RF211S”
Choice of internal or
external reference for
the data slicer
OK
DATAMSG
+
-
CC
CC
Not OK
- 2.4V)
Vdd/2
- 2.4V)
+
-
+
Σ
+
-
+
Comparator Threshold
100 kΩ
4 bits
CC
/2 through the DTR[5:2] bit. 16
SKFILT
AT86RF211S
DSIN
DISCOUT
reference 5418.
Time
CC
/2
23