EVAL-ADF7021-NDBZ5 Analog Devices Inc, EVAL-ADF7021-NDBZ5 Datasheet - Page 54

• Manufacturer Part Number: EVAL-ADF7021-NDBZ5
• Description: Matching Unpopulated
• Manufacturer: Analog Devices Inc
• Type: Transceiver, FSKr

Specifications of EVAL-ADF7021-NDBZ5

• Frequency: 80MHz ~ 650MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ADF7021-N
• Lead Free Status / Rohs Status: Supplier Unconfirmed

ADF7021-N
REGISTER 5—IF FILTER SETUP REGISTER
•
•
A coarse IF filter calibration is performed when the
IF_CAL_COARSE bit (R5_DB4) is set. If the IF_FINE_
CAL bit (R6_DB4) has been previously set, a fine IF filter
calibration is automatically performed after the coarse
calibration.
Set IF_FILTER_DIVIDER such that
GA1
0
1
IF
_
GQ1
0
1
IR_GAIN_ADJUST_UP/DN
GAIN
ATTENUATE
FILTER
IR_GAIN_ADJUST_I/Q
ADJUST I CH
ADJUST Q CH
0
0
0
.
1
GM5
XTAL
ADJUST_MAG
IR_GAIN_
_
0
0
0
.
1
GM4
DIVIDER
GM3
0
0
0
.
1
PD1
0
1
GM2 GM1
0
0
1
.
1
=
IR_PHASE_ADJUST_DIRECTION
ADJUST I CH
ADJUST Q CH
50
0
1
0
.
1
0
0
0
.
1
kHz
PM3
ADJUST_MAG
IR_PHASE_
ADJUST_MAG
IR_GAIN_
PM2
0
0
0
.
1
0
1
2
...
31
Figure 68. Register 5—IF Filter Setup Register Map
PM1 PM1
0
0
1
.
1
0
1
0
.
1
IFA6
0
0
0
..
0
1
1
1
1
1
IR PHASE
ADJUST
IF_FILTER_ADJUST
IFA5
0
1
2
...
15
Rev. 0 | Page 54 of 64
0
0
0
..
1
0
0
0
.
1
...
...
...
...
...
...
...
...
...
...
...
IFA2
0
0
1
..
1
0
0
1
.
1
1
0
..
1
0
1
0
.
1
IFA1
0
•
•
IF_FILTER_ADJUST
+1
+2
+31
0
–1
–2
...
–31
0
...
IF_FILTER_ADJUST allows the IF fine filter calibration
result to be programmed directly on subsequent receiver
power-ups, thereby saving on the need to redo a fine filter
calibration in some instances. Refer to the Filter Bandwidth
Calibration Readback section for information about using
the IF_FILTER_ ADJUST bits.
R5_DB[20:31] are used for image rejection calibration. Refer
to the Image Rejection Calibration section for details on how
to program these parameters.
IFD9
0
0
.
.
.
.
1
.
.
.
.
.
.
.
.
IF_FILTER_DIVIDER
IFD6
0
0
.
.
.
.
1
IFD5
0
0
.
.
.
.
1
IFD4
0
0
.
.
.
.
1
IFD3
0
0
.
.
.
.
1
IFD2
0
1
.
.
.
.
1
CC1 IF_CAL_COARSE
0
1
IFD1
1
0
.
.
.
.
1
NO CAL
DO CAL
IF_FILTER_
DIVIDER
1
2
.
.
.
.
511
ADDRESS
BITS