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RF68

2.4. Electrical Specifications

The table below gives the electrical specifications of the transmitter under the following conditions: Supply voltage = 3.3 V,

output power = +10 dBm terminated in a matched 50 Ohm impedance, unless otherwise specified.

Table 4

Transmitter Specifications

Symbol

Description

Conditions

Min

Typ

Max

Unit

Current Consumption

IDDSL

Supply current in Sleep mode

-

0.5

1

µA

IDDT_315

Supply current in Transmit mode

at 315 MHz*

RFOP=+10dBm 50% OOK

RFOP=+10dBm FSK

RFOP=0dBm

FSK

-

-

-

11

15

9

-

-

-

mA

mA

mA

IDDT_915

Supply current in Transmit mode

at 915 MHz*

RFOP=+10dBm FSK

RFOP=0dBm

FSK

-

-

17.5

10.5

-

-

mA

mA

RF and Baseband Specifications

Band 0, with FXOSC=22 MHz

310

-

450

MHz

Band 0, with FXOSC=24 MHz

312

-

450

MHz

Band 0, with FXOSC=26 MHz

338

-

450

MHz

FBAND

Accessible Frequency Bands

See details in Table 7.

Band 1, with FXOSC=26 MHz

860

902

-

-

870

928

MHz

MHz

FDA

Frequency deviation, FSK

10

-

200

kHz

BRF

Bit rate, FSK

Permissible Range

0.5

-

100

kbps

BRO

Bit rate, OOK

Permissible Range

0.5

-

10

kbps

OOK_B

OOK Modulation Depth

-

45

-

dB

RFOP

RF output power in 50 Ohms

in either frequency band

High Power Setting

Low Power Setting*

7

-3

10

0

-

-

dBm

dBm

RFOPFL

RF output power flatness

From 315 to 390 MHz, 50 Ohms load

-

2

-

dB

DRFOPV

Variation in RF output power with

supply voltage

2.5 V to 3.3 V

1.8 V to 3.7 V

-

-

-

-

3

7

dB

dB

PHN

Transmitter phase noise

At offset:

100 kHz

350 kHz

550 kHz

1.15 MHz

-

-

-

-

-82

-92

-96

-103

-76

-81

-91

-101

dBc/Hz

dBc/Hz

dBc/Hz

dBc/Hz

STEP_22

RF frequency step

FXOSC = 22 MHz, Band 0

-

1.34277

-

kHz

STEP_24

RF frequency step

FXOSC = 24 MHz, Band 0

-

1.46484

-

kHz

STEP_26

RF frequency step

FXOSC = 26 MHz, Band 0

FXOSC = 26 MHz, Band 1

-

-

1.58691

3.17383

-

-

kHz

kHz