ADF7021BCPZ-RL Просмотр технического описания (PDF) - Analog Devices

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ADF7021BCPZ-RL

High Performance Narrow-Band Transceiver IC

Analog Devices 

ADF7021

Data Sheet

Parameter

LNA INPUT IMPEDANCE

fRF = 915 MHz

fRF = 868 MHz

fRF = 450 MHz

fRF = 426 MHz

fRF = 315 MHz

fRF = 175 MHz

Min Typ

Max

24 − j60

26 − j63

63 − j129

68 − j134

96 − j160

178 − j190

Unit Test Conditions/Comments

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 measured on the EVAL-ADF7021DBx, which includes a T-stage harmonic filter (two inductors and one capacitor).

DIGITAL SPECIFICATIONS

Table 4.

Parameter

Min

Typ

Max

Unit Test Conditions/Comments

TIMING INFORMATION

Chip Enabled to Regulator Ready

10

µs CREG = 100 nF

Chip Enabled to Tx Mode

32-bit register write time = 50 µs

TCXO Reference

1

ms

XTAL

2

ms

Chip Enabled to Rx Mode

32-bit register write time = 50 µs, IF filter coarse

calibration only

TCXO Reference

1.2

ms

XTAL

2.2

ms

Tx to Rx Turnaround Time

300 µs + (5 × tBIT)

Time to synchronized data out, includes AGC

settling and CDR synchronization; see AGC

Information and Timing section for more details;

tBIT = data bit period

LOGIC INPUTS

Input High Voltage, VINH

0.7 × VDD

V

Input Low Voltage, VINL

0.2 × VDD V

Input Current, IINH/IINL

±1

µA

Input Capacitance, CIN

10

pF

Control Clock Input

50

MHz

LOGIC OUTPUTS

Output High Voltage, VOH

DVDD − 0.4

V

IOH = 500 µA

Output Low Voltage, VOL

0.4

V

IOL = 500 µA

CLKOUT Rise/Fall

5

ns

CLKOUT Load

10

pF

Rev. B | Page 10 of 64

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