TDA8050 Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

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TDA8050

QPSK transmitter

Philips Electronics 

Philips Semiconductors

QPSK transmitter

Product specification

TDA8050

SYMBOL

PARAMETER

CONDITIONS

H3

3rd-order harmonic of 5 to 40 MHz

signal

Overall; note 1

Fig.6

fi = 15 to 40 MHz

fi = 54 to 120 MHz

Φosc

phase noise

note 2;

at 10 kHz

at 100 kHz

So

spurious signals of 5 to 40 MHz

signal

ISOtot

C/N

total isolation at I/Q mid-range

carrier to noise ratio at final output

at 2 MHz from carrier

Crystal oscillator

fi = 5 to 40 MHz;

Vi(dif) = 100 mV at I and Q

inputs; Vo = 30 to 55 dBmV

see Fig.7

Vi(dif) = 100 mV

Vo = 35 to 55 dBmV;

fi = 26.5 MHz

fxtal

Zi

VI(DC)

crystal frequency

input impedance

DC input level

note 3

fxtal = 4 MHz

Modulator synthesizer

fref(mod)

RDR1

reference frequency

reference divider ratio

programmable

ND1

fixed main divider ratio

Icp

charge-pump current

Converter synthesizer

fixed

fstep

RD2

RDR2

ND2

frequency step size

fixed reference divider ratio

reference divider ratio

programmable

fixed main divider ratio

see Table 4

NDR2

programmable main divider ratio see Table 4

Three wire bus

VIL

LOW-level input voltage

VIH

HIGH-level input voltage

Lock detect pin

Vo(lock)

Vo(unlock)

output voltage (lock)

output voltage (unlock)

MIN. TYP. MAX. UNIT

−

−

−45 dBc

−

−

−35 dBc

−

−70 −

dBc/Hz

−

−90 −

dBc/Hz

−

−

−50 dBc

−

−

−65 dBc

−

113 −

dBc/Hz

1

−

4

600 1200 −

−

2.9

−

MHz

Ω

V

−

250 −

kHz

4

−

16

−

1120 −

−

0.30 −

mA

50

−

−

2

4

−

−

4

290 −

500 kHz

−

160

−

3 600

−

−

2.4

−

0.8

V

−

V

−

5

−

V

−

0.02 −

V

1999 Dec 14

8

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