ADF7021-NDF View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADF7021-NDF

High Performance Narrow-Band Transceiver IC

Analog Devices 

ADF7021-N

Parameter

RSSI

Range at Input2

Linearity

Absolute Accuracy

Response Time

AFC

Pull-In Range

Response Time

Accuracy

Rx SPURIOUS EMISSIONS3

Internal Inductor VCO

External Inductor VCO

LNA INPUT IMPEDANCE

fRF = 915 MHz

fRF = 868 MHz

fRF = 450 MHz

fRF = 426 MHz

fRF = 315 MHz

fRF = 175 MHz

Min Typ

Max

Unit Test Conditions/Comments

−120 to −47

±2

±3

390

dBm

dB

Input power range = −100 dBm to −47 dBm

dB

Input power range = −100 dBm to −47 dBm

μs

See the RSSI/AGC section

0.5

64

0.5

1.5 × IF_ kHz

FILTER_BW

Bits

kHz

The range is programmable in Register 10

(R10_DB[24:31])

Input power range = −100 dBm to +12 dBm

−91/−91

−52/−70

−62/−72

−64/−85

24 − j60

26 − j63

63 − j129

68 − j134

96 − j160

178 − j190

dBm <1 GHz at antenna input, unfiltered conductive/filtered

conductive

dBm >1 GHz at antenna input, unfiltered conductive/filtered

conductive

dBm <1 GHz at antenna input, unfiltered conductive/filtered

conductive

dBm >1 GHz at antenna input, unfiltered conductive/filtered

conductive

RFIN to RFGND

Ω

Ω

Ω

Ω

Ω

Ω

1 Calibration of the image rejection used an external RF source.

2 For received signal levels < −100 dBm, it is recommended to average the RSSI readback value over a number of samples to improve the RSSI accuracy at low input powers.

3 Filtered conductive receive spurious emissions are measured on the EVAL-ADF7021-NDBxx, which includes a T-stage harmonic filter (two inductors and one

capacitor).

Rev. 0 | Page 8 of 64

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