ADF7021BCPZ Analog Devices Inc, ADF7021BCPZ Datasheet - Page 52

• Manufacturer Part Number: ADF7021BCPZ
• Description: IC, NARROW BAND TXRX, 80-950MHZ LFCSP-48
• Manufacturer: Analog Devices Inc

Specifications of ADF7021BCPZ

• Receiving Current: 26.4mA
• Transmitting Current: 32.3mA
• Data Rate: 32.8Kbps
• Frequency Range: 80MHz To 950MHz
• Rf Ic Case Style: LFCSP
• No. Of Pins: 48
• Supply Voltage Range: 2.3V To 3.6V
• Frequency: 80MHz ~ 650MHz, 862MHz ~ 940MHz
• Data Rate - Maximum: 33kbps
• Modulation Or Protocol: 2-FSK, 3-FSK, 4-FSK, MSK
• Applications: Keyless Entery, Pagers, WMTS
• Power - Output: -20dBm ~ 13dBm
• Sensitivity: -130dBm
• Voltage - Supply: 2.3 V ~ 6 V
• Current - Receiving: 20mA
• Current - Transmitting: 32.3mA @ 10dBm
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LFCSP
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 7mm
• Product Length (mm): 7mm
• Operating Supply Voltage (min): 2.3V
• Operating Supply Voltage (typ): 3V
• Operating Supply Voltage (max): 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-ADF7021BZ5 - BOARD DAUGHTER MATCH UNPOPULATEDEVAL-ADF7021BZ2 - BOARD DAUGHTER 860/870MHZEVAL-ADF7021BIZ - BOARD DAUGHTER 421/440MHZEVAL-ADF7021BEZ - BOARD DAUGHTER 420/440MHZ
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant

ADF7021
REGISTER 5—IF FILTER SETUP REGISTER
A coarse IF filter calibration is performed when the
IF_CAL_COARSE bit (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
IF
GA1
0
1
_
FILTER
GQ1
0
1
IR GAIN ADJUST UP/DN
GAIN
ATTENUATE
XTAL
IR GAIN ADJUST I/Q
ADJUST I CH
ADJUST Q CH
_
ADJUST_MAG
DIVIDER
0
0
0
.
1
IR_GAIN_
GM5
0
0
0
.
1
GM4
PD1
0
1
=
GM3
0
0
0
.
1
50
IR PHASE ADJUST I/Q
ADJUST I CH
ADJUST Q CH
kHz
GM2 GM1
0
0
1
.
1
0
0
0
.
1
PM3
ADJUST_MAG
IR_PHASE_
0
1
0
.
1
PM2
0
0
0
.
1
IR GAIN
ADJUST
0
1
2
...
31
Figure 67. 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
IF_FILTER_ADJUST
IR PHASE
ADJUST
Rev. A | Page 52 of 64
IFA5
0
1
2
...
15
0
0
0
..
1
0
0
0
.
1
...
...
...
...
...
...
...
...
...
...
...
IFA2
0
0
1
..
1
0
0
1
.
1
IFA1
0
1
0
..
1
0
1
0
.
1
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.
DB[20:31] are used for image rejection calibration. Refer to the
Image Rejection Calibration section for details on how to
program these parameters.
ADJUST
IF FILTER
0
+1
+2
+31
0
–1
–2
...
–31
...
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
0
1
IFD1
1
0
.
.
.
.
1
CAL
NO CAL
DO CAL
FILTER CLOCK
DIVIDE RATIO
1
2
.
.
.
.
511
ADDRESS
BITS