TDA6502 datasheet(20/44 Pages) PHILIPS

20 / 44 page

2000 Mar 16

Philips Semiconductors

Preliminary speciﬁcation

5 V mixers/oscillators and synthesizers for

cable TV and VCR 2-band tuners

TDA6502; TDA6502A;

TDA6503; TDA6503A

Notes

1. The RF frequency range is defined by the oscillator frequency range and the IF frequency.

2. This is the level of the RF signal (100% amplitude modulated with 11.89 kHz) that causes a 750 Hz frequency

deviation on the oscillator signal; it produces sidebands 30 dB below the level of the oscillator signal.

3. Limits are related to the tank circuits used in Fig.19; frequency bands may be adjusted by the choice of external

components.

input impedance (RS +jLSω)RS at fRF = 367.25 MHz; see Fig.8

−

−Ω

RS at fRF = 801.25 MHz; see Fig.8

−

−Ω

LS at fRF = 367.25 MHz; see Fig.8

−

8.5

−

LS at fRF = 801.25 MHz; see Fig.8

−

UHF OSCILLATOR

fOSC(o)

oscillator operational

frequency

300

1000

MHz

fOSC

oscillator frequency

note 3

413

−

847

MHz

∆f

OSC(V)

oscillator frequency variation

with supply voltage

∆VCC = 5%; note 4

−

kHz

∆VCC = 10%; note 4

−

100

−

kHz

∆f

OSC(T)

oscillator frequency variation

with temperature

∆T=25 °C; with compensation;

note 5

−

500

−

kHz

∆f

OSC(t)

oscillator frequency drift

5 s to 15 min after switching on;

note 6

−

120

−

kHz

OSC

phase noise, carrier-to-noise

sideband

±100 kHz frequency offset; worst

case in the frequency range

−

105

−

dBc/Hz

RSC

ripple susceptibility of VCC

(peak-to-peak value)

VCC = 5 V; worst case in the

frequency range; ripple frequency

500 kHz; note 7

−

IF PREAMPLIFIER

IF operational frequency

MHz

S22

output reﬂection coefﬁcient

magnitude; see Fig.9

−−12.8

−

phase; see Fig.9

−

0.2

−

degree

output impedance

(RS +jLSω)

RS at 43.5 MHz; see Fig.9

−

−Ω

LS at 43.5 MHz; see Fig.9

−

0.5

−

REJECTION AT THE IF OUTPUT

INTdiv

level of divider interferences

in the IF signal

worst case; note 8

−

µV

INTxtal

crystal oscillator

interferences rejection

VIF = 100 dBµV; worst case in the

frequency range; note 9

−−

dBc

INTref

reference frequency

rejection

VIF = 100 dBµV; worst case in the

frequency range; fREF = 62.5 kHz;

note 10

−−

dBc

INTch6

channel 6 beat

VRF(pix) =VRF(snd) =80dBµV;

note 11

tbf

−

dBc

INTchA-5

channel A-5 beat

VRF(pix) =80dBµV; note 12

tbf

−

dBc

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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