SX1231 Просмотр технического описания (PDF) - Semtech Corporation

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производитель

SX1231

Low Power Integrated UHF Transceiver

Semtech Corporation 

ADVANCED COMMUNICATIONS & SENSING

SX1231

DATASHEET

IMR_OOK

Image rejection in OOK mode

Wanted signal level = -106 dBm

27

30

- dB

TS_RE

Receiver wake-up time, from PLL RxBw = 10 kHz, BR = 4.8 kb/s

locked state to RxReady

RxBw = 200 kHz, BR = 100 kb/s

-

1.7

- ms

-

96

- us

TS_RE_AGC Receiver wake-up time, from PLL RxBw= 10 kHz, BR = 4.8 kb/s

-

3.0

ms

locked state, AGC enabled

RxBw = 200 kHz, BR = 100 kb/s

163

us

TS_RE_AGC Receiver wake-up time, from PLL RxBw= 10 kHz, BR = 4.8 kb/s

&AFC

lock state, AGC and AFC enabled RxBw = 200 kHz, BR = 100 kb/s

4.8

ms

265

us

TS_FEI

FEI sampling time

Receiver is ready

-

4.Tbit

-

-

TS_AFC

AFC Response Time

Receiver is ready

-

4.Tbit

-

-

TS_RSSI

RSSI Response Time

Receiver is ready

-

2.Tbit

-

-

DR_RSSI

RSSI Dynamic Range

AGC enabled

Min

-

-115

- dBm

Max -

0

- dBm

*

Set SensitivityBoost in RegTestLna to 0x2D to reduce the noise floor in the receiver

2.4.4. Transmitter

Table 7 Transmitter Specification

Symbol Description

Conditions

Min Typ Max Unit

RF_OP

RF_OPH

ΔRF_OP

RF output power in 50 ohms

On RFIO pin

Max RF output power, on

PA_BOOST pin

RF output power stability

Programmable with 1dB steps Max -

+13

- dBm

Min -

-18

- dBm

With external match to 50 ohms

-

+17

- dBm

From VDD=1.8V to 3.6V

- +/-0.3 - dB

PHN

Transmitter Phase Noise

50 kHz Offset from carrier

868 / 915 MHz bands

-

434 / 315 MHz bands

-

ACP

Transmitter adjacent channel

BT=0.5 . Measurement conditions as

-

power (measured at 25 kHz off- defined by EN 300 220-1 V2.1.1

set)

TS_TR

Transmitter wake up time, to the Frequency Synthesizer enabled,

-

first rising edge of DCLK

PaRamp = 10 us, BR = 4.8 kb/s.

-95

- dBc/

-99

- Hz

-

-37 dBm

120

- us

Rev 3 - April 2010

Page 14

www.semtech.com

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