ISM 868 MHz, 433 MHz and 315 MHz FSK Transmitter – Preliminary Data Sheet

ASCell3911

Rev. A, February 2000

Page 10 of 13

Austria Mikro Systeme International AG

2.3 FSK Operation

TA = 23 °C, VDD, VSYN = 2,7 V, unless specified otherwise. Device functional for TA= -40 to

+85 °C.

Symbol

Parameter

Conditions / Notes

Min

Typ

Max

Units

Carrier frequency

Depends on different external

crystals.

315,000

433,920

868,300

MHz

MHz

MHz

∆F

FSK frequency devi ation 315,000 MHz:

433,920 MHz:

868,300 MHz:

-68,4

-61,7

-61,7

+68,4

+61,7

+61,7

kHz

kHz

kHz

Crystal oscillator (XOSC)

frequency

315,000 MHz, Crystal=H

433,920 MHz, Crystal=L

868,300 MHz, Crystal=L

19,6875

13,5600

13,5672

MHz

MHz

MHz

Crystal oscillator (XOSC)

fequency tolerance

315,000 M: (-40~+85 °C),

433,920 MHz: (-40~+85 °C),

868,300 MHz: (-40~+85 °C)

50

50

25

ppm

ppm

ppm

Gross data rate

Including burst protocol.

18,235

1)

kbps

Available output power,

Ω differ-

ential

315,000MHz (USA),

433,920 MHz

868,300 MHz

315MHz (Japan) - set through

RPA???

-1,5

–1,5

–3,0

0,0

0,0

-1,5

-20?

+1,5

+1,5

+0,0

dBm

dBm

dBm

dBm

Time between two differ-

ent transmitted mes-

sages “a”&“b”

30

ms

1)

@ 433,920 MHz: 18,225 kbps.

@ 315,000 MHz: 19,226 kbps.

2)

Antenna dependent - will not be production tested.

2.4 Digital Pin Characteristics

TA = 23 °C, VDD = 2,7 V, unless specified otherwise. GND is the 0 V reference.

Input parameters for bi-directional pins (µC_CLK, WAKEUP) are valid at disabled outputs.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

µC_CLK (µC clock output / wake-up input)

VOH

High level output voltage

IOH =-1 mA

VDD-0,5

-

V

VOL

Low level output voltage

IOL =1 mA

-

0,3

V

tr

Rise time

CLoad = 10 pF

20

ns

td

Fall time

CLoad = 10 pF

20

ns

jcc

Cycle to cycle jitter

+/-5

%

VIH

High level input voltage

VDD-0,5

-

V

VIL

Low level input voltage

-

0,3

V

IIH

High level input current

VIH = VDD

1

µA

IIL

Low level input current

VIL =0 V; Due to in-

ternal pull-up

-40

µA