SX1211I084TRT datasheet(9/73 Pages) SEMTECH

Part #	SX1211I084TRT

Description	Lowest Power Integrated UHF Transceiver Short Range Devices

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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SX1211

ADVANCED COMMUNICATIONS & SENSING

V3.0 – august 15

th, 2007

Page 9 of 73

www.semtech.com

2.4.2. Frequency Synthesis

Table 6: Frequency Synthesizer Specification

2.4.3. Transmitter

Table 7: Transmitter Specification

Symbol

Description

Conditions

Min

Typ

Max

Unit

FR

Frequency ranges

Programmable but requires

a specific BOM.

863

902

950

-

870

928

960

MHz

BR_F

Bit rate (FSK)

NRZ

1.56

-

100

kb/s

BR_O

Bit rate (OOK)

NRZ

1.56

-

32

kb/s

FDA

Frequency deviation (FSK)

33

50

200

kHz

XTAL

Crystal oscillator frequency

12

12.8

15

MHz

FSTEP

Frequency synthesizer

step

Variable, depending on the

frequency.

-

2

-

kHz

TS_OSC

Oscillator wake-up time

From sleep mode.

-

1.5

5

ms

TS_FS

Frequency synthesizer

wake-up time

From Stby to frequency at

most 10 kHz away from the

target.

-

500

800

µs

200 kHz step at most

10 kHz away from the

target

-

200

-

µs

1MHz step at most 10 kHz

away from the target

-

220

-

µs

TS_HOP

Frequency synthesizer hop

time

10 MHz step at most

10 kHz away from the

target

-

350

-

µs

Symbol

Description

Conditions

Min

Typ

Max

Unit

Maximum power setting

-

12.5

-

dBm

RFOP

RF output power,

programmable with 8 steps

of typ. 3dB

Minimum power setting

-

-8.5

-

PN

Phase noise

Measured with a 600 kHz

offset, at the transmitter

output.

-

-112

-

dBc/Hz

SPT

Transmitted spurious

At any offset between

200 kHz and 600 kHz,

unmodulated carrier, Fdev

= 50 kHz.

-

-47

dBc

TS_TR

Transmitter wake-up time

From FS to Tx ready.

-

120

500

µs

TS_TR2

Transmitter wake-up time

From Stby to Tx ready.

-

600

900

µs

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