RFM95 datasheet(79/121 Pages) HOPE

Part #	RFM95

Description	Low Power Long Range Transceiver Module

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Manufacturer	HOPE [HOPE Microelectronics CO., Ltd.]

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Page 79

RFM95/96/97/98(W)

Tel: + 86-755-82973805

Fax: + 86-755-82973550

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

WIRELESS & SENSING

PRELIMINARY

DATASHEET

5.4.3. High Power +20 dBm Operation

The RFM95/96/97/98(W) have a high power +20 dBm capability on PA_BOOST pin, with the following settings:

Table 78 High Power Settings

Register

Address

Value for

High Power

Default value

PA_HF/LF or

+17dBm

Description

RegPaDac

0x4d

0x87

0x84

Set Pmax to +20dBm for PA_HP

Notes - High Power settings must be turned off when using PA_LF or PA_HF

- The Over Current Protection limit should be adapted to the actual power level, in RegOcp

Specific Absolute Maximum Ratings and Operating Range restrictions apply to the +20 dBm operation. They are listed in

Table 79 and Table 80.

Table 79 Operating Range, +20dBm Operation

Symbol

Description

Min

Max

Unit

DC_20dBm

Duty Cycle of transmission at +20 dBm output

-

1

%

VSWR_20dBm

Maximum VSWR at antenna port, +20 dBm output

-

3:1

-

Table 80 Operating Range, +20dBm Operation

Symbol

Description

Min

Max

Unit

VDDop_20dBm

Supply voltage, +20 dBm output

2.4

3.7

V

The duty cycle of transmission at +20 dBm is limited to 1%, with a maximum VSWR of 3:1 at antenna port, over the

standard operating range [-40;+85°C]. For any other operating condition, contact your Hope RF representative.

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