MC33493 datasheet(9/20 Pages) MOTOROLA

Part #	MC33493

Description	PLL tuned UHF Transmitter for Data Transfer Applications

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Manufacturer	MOTOROLA [Motorola, Inc]

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ELECTRICAL CHARACTERISTICS

MOTOROLA

MC33493 Technical Data

9

2.30

Phase Noise

315 & 434MHz bands,

±175kHz from fcarrier

--75

-68

dBc/

Hz

2.31

868MHz band,

±175kHz from fcarrier

--73

-66

dBc/

Hz

2.32

PLL Lock-in Time,

tPLL_lock_in

fcarrier within 30kHz from the final value,

crystal series resistor=150

Ω

-

400

1600

µs

2.33

XTAL1 Input Capacitance

-

1

-

pF

2.34

Crystal Resistance

OOK modulation

-

20

200

Ω

2.44

FSK modulation

20

50

2.35

OOK Modulation Depth

75

90

-

dBc

2.36

FSK Modulation

Carrier Frequency

Total Deviation

315 & 434MHz bands, see note 1

-

100

kHz

2.37

868MHz band, see note 1

-

200

kHz

2.38

CFSK Output Resistance

MODE=0, DATA=x

MODE=1, DATA=0

50

70

-

k

Ω

2.39

MODE=1, DATA=1

-

90

300

Ω

2.43

CFSK Output Capacitance

-

1

-

pF

2.40

Data Rate

Manchester coding

-

10

kBit/s

2.41

Data to RF delay difference

between falling and rising edges,

tdelay_difference

MODE=0, see note 2

3.5

5.25

7.5

µs

2.42

MODE=1, see note 2

-200

-

200

ns

Note 1: This parameter is depending on crystal characteristics, load capacitor values (see Table 6) and PCB

track capacitance.

Note 2: Delay difference definition

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, voltage range Vcc=[Vshutdown;3.6V], temperature range TA=[-40°C;+125°C],

Rext=12kΩ+/-5%, RF output frequency fcarrier=433.92MHz, reference frequency freference=13.560MHz, output

load RL=50Ω+/-1% (figure 9). Values refer to the circuit shown in the recommended application schematics:

figure 12 (14) for OOK (FSK) modulation. Typical values reflect average measurement at VCC=3V, TA=25°C.

Parameter

Test Conditions, Comments

Limits

Unit

Min.

Typ.

Max.

Input data

Demodulated data

tdelay_rise

tdelay_fall

From 50% of data edge to corresponding

tdelay_difference=tdelay_fall-tdelay_rise

demodulated signal envelope edge:

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