TDA8050 Datasheet, PDF(8/24 Page) NXP Semiconductors – TDA8046H

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

TDA8050 Datasheet, PDF (8/24 Pages) NXP Semiconductors – TDA8046H

◁

Philips Semiconductors

QPSK transmitter

Product speciï¬cation

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

Î¦osc

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 ï¬nal 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

ï¬xed main divider ratio

Icp

charge-pump current

Converter synthesizer

ï¬xed

fstep

RD2

RDR2

ND2

frequency step size

ï¬xed reference divider ratio

reference divider ratio

programmable

ï¬xed 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

â

â

â45 dBc

â

â

â35 dBc

â

â70 â

dBc/Hz

â

â90 â

dBc/Hz

â

â

â50 dBc

â

â

â65 dBc

â

113 â

dBc/Hz

1

â

4

600 1200 â

â

2.9

â

MHz

â¦

V

â

250 â

kHz

4

â

16

â

1120 â

â

0.30 â

mA

50

â

â

2

4

â

â

4

290 â

500 kHz

â

160

â

3 600

â

â

2.4

â

0.8

V

â

V

â

5

â

V

â

0.02 â

V

1999 Dec 14

8

▷