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ADF7021 Datasheet(PDF) 37 Page - Analog Devices

Part # ADF7021
Description  High Performance Narrowband ISM Transceiver IC
PDF  44 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADF7021 Datasheet(HTML) 37 Page - Analog Devices

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Preliminary Technical Data
ADF7021
Rev. PrI | Page 37 of 44
REGISTER 9—AGC REGISTER
AGC HIGH THRESHOLD
LNA
GAIN
AGC
MODE
FILTER
GAIN
AGC LOW THRESHOLD
ADDRESS
BITS
FI1
0
1
FILTER CURRENT
LOW
HIGH
0
1
2
3
AGC MODE
AUTO AGC
MANUAL AGC
FREEZE AGC
RESERVED
FG2
0
0
1
1
FG1
0
1
0
1
FILTER GAIN
8
24
72
INVALID
LG2
0
0
1
1
LG1
0
1
0
1
LNA GAIN
3
10
30
INVALID
GL3
0
0
0
1
.
.
.
1
1
1
GL1
1
0
1
0
.
.
.
1
0
1
AGC LOW
THRESHOLD
1
2
3
4
.
.
.
61
62
63
GL2
0
1
1
0
.
.
.
0
1
1
GL7
0
0
0
0
.
.
.
1
1
1
GL6
0
0
0
0
.
.
.
1
1
1
GL5
0
0
0
0
.
.
.
1
1
1
GL4
0
0
0
0
.
.
.
1
1
1
GH3
0
0
0
1
.
.
.
1
1
0
GH1
1
0
1
0
.
.
.
0
1
0
AGC HIGH
THRESHOLD
1
2
3
4
.
.
.
78
79
80
GH2
0
1
1
0
.
.
.
1
1
0
GH7
0
0
0
0
.
.
.
1
1
1
GH6
0
0
0
0
.
.
.
0
0
0
GH5
0
0
0
0
.
.
.
0
0
1
GH4
0
0
0
0
.
.
.
1
1
0
LI2
0
LI1
0
LNA BIAS
800µA (DEFAULT)
LG1
0
1
LNA MODE
DEFAULT
REDUCED GAIN
ML1
0
1
MIXER LINEARITY
DEFAULT
HIGH
Figure 41.
Register 9—AGC Register Comments
•
Default AGC_LOW_THRESHOLD = 30, default AGC_HIGH_THRESHOLD = 70. See the RSSI/AGC section for details.
•
AGC high and low settings must be more than 30 apart to ensure correct operation.
•
LNA gain of 30 is available only if LNA mode, R9_DB25, is set to zero.



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