ASCELL3912 Просмотр технического описания (PDF) - austriamicrosystems AG

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ASCELL3912

ISM 868 MHz, 433 MHz and 315 MHz FSK Receiver Cell

austriamicrosystems AG 

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

ASCell3912

Austria Mikro Systeme International AG

2.3 Receiver Operation

TA = 23 °C, VDD, AVDD = 3.6 V, unless specified otherwise. Devive functional for TA= -40 to

+85 °C.

Symbol Parameter

Conditions / Notes

Min Typ Max

FC

Carrier Frequency

Depends on different external

crystals.

315.000

433.920

868.300

Rin

Input impedance

Capacitive part t.b.d.

200~ 400

?F

Nominal FSK frequency devi a- 315, 433.92, 868.3MHz

61

69

tion

Fxosc

Crystal oscillator (XOSC) fre- 315,000 MHz: max +/- 50ppm

quency

433.920 MHz: max +/- 50ppm

868.300 MHz: max +/-25ppm

19,6875

13.5600

13.5672

TFxosc

Crystal oscillator (XOSC) fre- 315,000 MHz: (-40~+85 °C),

50

quency tolerance

433.920 MHz: (-40~+85 °C),

50

868.300 MHz: (-40~+85 °C).

25

DR,gross

RF

1)

Sens

RFSensT

Gross Data Rate

Including protocol.

Receiver sensitivity

-10 °C<TA<+70 °C

Temperature sensitivity reduc- -40<TA<-10 °C. or

tion

+70>TA>+85 °C.

18.235

-96 -100

4

RFSensFoffim Receiver sensitivity reduction @maximum receiver sensitiv-

7

caused by frequency offset ity reduction @ 44 kHz offset

RFSensLNA

BI200KHz2)

BI1MHz2)

BI10MHz2)

Sensitivity reduction caused

by LNA gain switching

Blocking immunity

200 kHz – 1 MHz

Blocking immunity

1-10 MHz

Blocking immunity @

>10 MHz

Without external filter.

Without external filter

Without external filter

10

0

21

63

PLOfeed

LO @ FC power available at

-28

LC+ and LC- nodes

Units

MHz

MHz

MHz

Ω

kHz

MHz

MHz

MHz

ppm

ppm

ppm

kbps

dBm

dB

dB

dB

dB

dB

dB

dBm

1)

Standard Receive Quality (SRQ): Message reception successfully finished after <80 ms in 80% of all transmission

trails.

2)

CW blocking signal relative to applied useful signal with –94dBm power level and SRQ.

Measured without frequency offset and at +25 °C

Receiver Timing

Symbol

TDni

Parameter

Time to received FSK data

TDwi

Time to received FSK data

Tstop

RX switch off time

Conditions / Notes

Min Typ Max Units

Configured for fast response 27

(receiver sleep time = 0)

80 ms

Using low idle duty cycle the 40

(receiver sleep time >0)

92 ms

Timeout for comfort functions

30

ms

Rev. A, February 2000

Page 10 of 14

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