RF98 datasheet(13/121 Pages) HOPE

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Page 13

RF96/97/98

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WIRELESS & SENSING

PRELIMINARY

DATASHEET

2.4. Chip Specification

The tables below give the electrical specifications of the transceiver under the following conditions: Supply voltage

VDD=3.3 V, temperature = 25 °C, FXOSC = 32 MHz, FRF = 169/434/868/915 MHz (see specific indication), Pout =

+13dBm, 2-level FSK modulation without pre-filtering, FDA = 5 kHz, Bit Rate = 4.8 kb/s and terminated in a matched 50

Ohm impedance, shared Rx and Tx path matching., unless otherwise specified.

2.4.1. Power Consumption

Table 51 Power Consumption Specification

Symbol

Description

Conditions

Min

Typ

Max

Unit

IDDSL

Supply current in Sleep mode

0.2

IDDIDLE

Supply current in Idle mode

RC oscillator enabled

1.5

IDDST

Supply current in Standby mode

Crystal oscillator enabled

1.6

1.8

IDDFS

Supply current in Synthesizer

mode

FSRx

5.8

IDDR

Supply current in Receive mode

LnaBoost

Off, higher bands

LnaBoost

On, higher bands

Lower bands

10.8

11.5

12.1

IDDT

Supply current in Transmit mode

with impedance matching

RFOP = +20 dBm, on PA_BOOST

RFOP = +17 dBm, on PA_BOOST

RFOP = +13 dBm, on RFO_LF/HF pin

RFOP = + 7 dBm, on RFO_LF/HF pin

120

2.4.2. Frequency Synthesis

Table 52 Frequency Synthesizer Specification

Symbol

Description

Conditions

Min

Typ

Max

Unit

Synthesizer frequency range

Programmable

137

410

862

175

525

1020

MHz

FXOSC

Crystal oscillator frequency

MHz

TS_OSC

Crystal oscillator wake-up time

250

TS_FS

Frequency synthesizer wake-up

time to PllLock signal

From Standby mode

TS_HOP

Frequency synthesizer hop time

at most 10 kHz away from the tar-

get frequency

200 kHz step

1 MHz step

5 MHz step

7 MHz step

12 MHz step

20 MHz step

25 MHz step

FSTEP

Frequency synthesizer step

FSTEP = FXOSC/219

61.0

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