TDA5637 查看數據表（PDF） - Philips Electronics

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TDA5637

9 V VHF, hyperband and UHF mixers- oscillators for TV and VCR 3-band tuners

Philips Electronics 

Philips Semiconductors

9 V VHF, hyperband and UHF mixers-

oscillators for TV and VCR 3-band tuners

Product specification

TDA5636; TDA5637

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Band C oscillator

fOSC

fshift

fdrift

frequency range

frequency shift

frequency drift

note 2

470

−

∆VP = 10%; note 3

−

−

∆T = 25 °C with compensation; note 4 −

−

5 s to 15 min after switching on; note 5 −

−

900

500

1400

400

MHz

kHz

kHz

kHz

LO output

S22

output reflection

coefficient

YO

output admittance

(Yp + jωCp)

Vo

SRF

output voltage

spurious signal on

LO output with

respect to LO output

signal

HLO

LO signal harmonics

with respect to LO

signal

see Fig.16

see Fig.16

see Fig.16

RL = 50 Ω

RL = 50 Ω; note 7

RL = 50 Ω

−

−

−

−

400

−

Ω

−

0.7

−

pF

83

91

100

dBµV

−

−

−10

dBc

−

−

−10

dBc

IF amplifier

S22

output reflection

magnitude; through 1 nF; see Fig.15

−

−14.5 −

dB

coefficient

phase; through 1 nF; see Fig.15

−

5.5

−

deg.

Zo

output impedance

RS; through 1 nF

(Rs + jωLs)

LS; through 1 nF

−

73

−

Ω

−

12

−

nH

Notes

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

2. Limits are related to the tank circuits used in Fig.17; frequency bands may be adjusted by the choice of external

components.

3. The frequency shift is defined as the change in oscillator frequency when the supply voltage varies from

VP = 9 to 8.1 V or from VP = 9 to 9.9 V.

4. The frequency drift is defined as the change in oscillator frequency when the ambient temperature varies from

Tamb = 25 to 0 °C or from Tamb = 25 to 50 °C.

5. Switching on drift is defined as the change in oscillator frequency between 5 s and 15 min after switching on.

6. The input level causing 10 kHz frequency detuning at the LO output; fOSC = fRF + 38.9 MHz.

7. SRF: spurious signal on LO with respect to LO output signal:

RF level = 120 dBµV at fRF < 180 MHz

RF level = 107.5 dBµV at fRF = 180 to 225 MHz

RF level = 97 dBµV at fRF = 225 to 860 MHz.

1996 Jun 10

10

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