RFM68CW

RFM68CW

6

Tel: + 86-755-82973805

Fax: + 86-755-82973550

E-mail: sales@hoperf.com http:/ / www.hoperf.com

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

Band0,For 315MHz Module

312

380

MHz

Band0,For 433MHz Module

380

450

MHz

Band0,For 868MHz Module

860

870

MHz

FBAND

Band1,For 915MHz Module

902

928

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 380 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 = 24 MHz,for 315MHz module

-

1.46484

-

kHz

STEP_26

RF frequency step

FXOSC = 26MHz, for 433,868MHz

module

-

1.58691

-

kHz

STEP_26

RF frequency step

FXOSC = 26MHz, for 915MHz module

3.17383

-

kHz