RF69 datasheet(13/81 Pages) ETC2

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RF69

Page 13

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FSTEP

Frequency synthesizer step

FSTEP = FXOSC/219

61.0

FRC

RC Oscillator frequency

After calibration

62.5

kHz

BRF

Bit rate, FSK

Programmable

1.2

300

kbps

BRO

Bit rate, OOK

Programmable

1.2

32.768

kbps

FDA

Frequency deviation, FSK

Programmable

FDA + BRF/2 =< 500 kHz

0.6

300

kHz

2.4.3. Receiver

All receiver tests are performed with RxBw = 10 kHz (Single Side Bandwidth) as programmed in RegRxBw, receiving a

PN15 sequence with a BER of 0.1% (Bit Synchronizer is enabled), unless otherwise specified. The LNA impedance is set

to 200 Ohms, by setting bit LnaZin in RegLna to 1. Blocking tests are performed with an unmodulated interferer. The

wanted signal power for the Blocking Immunity, ACR, IIP2, IIP3 and AMR tests is set 3 dB above the nominal sensitivity

level.

Table 6

Receiver Specification

Symbol

Description

Conditions

Min

Typ

Max

Unit

RFS_F

FSK sensitivity, highest LNA gain

FDA = 5 kHz,

BR = 1.2 kb/s

FDA = 5 kHz,

BR = 4.8 kb/s

FDA = 40 kHz, BR = 38.4 kb/s

-118

-114

-105

dBm

FDA = 5 kHz, BR = 1.2 kb/s *

-120

dBm

RFS_O

OOK sensitivity, highest LNA gain

BR = 4.8 kb/s

-112

-109

dBm

CCR

Co-Channel Rejection

-13

-10

ACR

Adjacent Channel Rejection

Offset = +/- 25 kHz

Offset = +/- 50 kHz

Blocking Immunity

Offset = +/- 1 MHz

Offset = +/- 2 MHz

Offset = +/- 10 MHz

Blocking Immunity

Wanted signal at sensitivity

+16dB

Offset = +/- 1 MHz

Offset = +/- 2 MHz

Offset = +/- 10 MHz

AMR

AM Rejection , AM modulated

interferer with 100% modulation

depth, fm = 1 kHz, square

Offset = +/- 1 MHz

Offset = +/- 2 MHz

Offset = +/- 10 MHz

IIP2

2nd order Input Intercept Point

Unwanted tones are 20 MHz

above the LO

Lowest LNA gain

Highest LNA gain

+75

+35

dBm

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