EVAL-ADF7021-NDBZ5 Analog Devices Inc, EVAL-ADF7021-NDBZ5 Datasheet - Page 56
EVAL-ADF7021-NDBZ5
Manufacturer Part Number
EVAL-ADF7021-NDBZ5
Description
Matching Unpopulated
Manufacturer
Analog Devices Inc
Type
Transceiver, FSKr
Datasheet
1.ADF7021-NBCPZ-RL.pdf
(64 pages)
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
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ADF7021-N
REGISTER 7—READBACK SETUP REGISTER
•
•
Readback of the measured RSSI value is valid only in Rx
mode. Readback of the battery voltage, temperature sensor, or
voltage at the external pin is not valid in Rx mode.
To read back the battery voltage, the temperature sensor, or
the voltage at the external pin in Tx mode, users should
first power up the ADC using R8_DB8 because it is turned
off by default in Tx mode to save power.
RB3
0
1
READBACK_SELECT
DISABLED
ENABLED
Figure 70. Register 7—Readback Setup Register Map
DB8
RB3
RB2
0
0
1
1
READBACK_
SELECT
DB7
RB2
RB1
0
1
0
1
Rev. 0 | Page 56 of 64
READBACK MODE
AFC WORD
ADC OUTPUT
FILTER CAL
SILICON REV
DB6
RB1
DB5
AD2
MODE
ADC_
•
DB4
AD1
For AFC readback, use the following equations (see the
Readback Format section):
FREQ RB [Hz] = (AFC READBACK × DEMOD CLK)/2
V
V
Temperature [°C] = −40 + (68.4 − TEMP READBACK) × 9.32
BATTERY
ADCIN
AD2
0
0
1
1
C4 (0)
DB3
= ADCIN VOLTAGE READBACK/42.1
AD1
0
1
0
1
= BATTERY VOLTAGE READBACK/21.1
C3 (1)
DB2
CONTROL
ADC_MODE
MEASURE RSSI
BATTERY VOLTAGE
TEMP SENSOR
TO EXTERNAL PIN
BITS
C2 (1) C1 (1)
DB1
DB0
18
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