SX1230, Revision 2 May 2009

©2008 Semtech Corp.

SX1230

www.semtech.com

Page 8

Integrated Transmitter IC

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

2.4. Electrical Specifications

The table below gives the electrical specifications of the transmitter under the following conditions: Supply voltage = 3.3 V,

kbit/s and output power = 13 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

IDDST

Supply current in standby mode

Crystal oscillator enabled

-

0.9

1.2

mA

IDDFS

Supply current in synthesiser

mode

-8-

mA

IDDT

Supply current in transmit mode

with appropriate external match-

ing (see Section 7).

RF Power o/p = 17 dBm

RF Power o/p = 13 dBm

RF Power o/p = 10 dBm

RF Power o/p = 0 dBm

-

-

-

-

95

45

33

20

-

-

40

25

mA

mA

mA

mA

RF and Baseband Specifications

BRF

Bit rate, FSK

Programmable.

1.2

-

600

kbps

BRO

Bit rate, OOK

Programmable.

1.2

-

32

kbps

FDA

Frequency deviation, FSK

Programmable

0.6

-

300

kHz

RFOP

RF output power in 50 ohms

Programmable with 1 dB steps.

Max

Min

10

-21

13

-18

-

-

dBm

dBm

PHN

Transmitter phase noise

50 kHz Offset from carrier

-

-95

-

dBc/

Hz

RFOPH

Max RF output power with an

external impedance transforma-

tion

With external match to 50 ohms.

14

17

-

dBm

ACP

Transmitter adjacent channel

power (measured at 25 kHz off-

set)

Pre-filter enabled. Measurement

conditions as defined by EN 300

220-1 V2.1.1.

--

-37

dBm

FR

Synthesizer Frequency Range

Programmable.

FBand 1

FBand 2

FBand 3

290

431

862

-

-

-

340

510

1020

MHz

MHz

MHz

FSTEP

Frequency synthesizer step

-61-

Hz

FRC

RC Oscillator frequency range

45

65

85

kHz

Timing Specifications

TS_FS

Frequency synthesizer wake up

time

Crystal oscillator Enabled.

-

100

150

µs