TDA5634T 查看數據表（PDF） - Philips Electronics

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TDA5634T

9 V UHF mixer/oscillator for TV and VCR tuners

Philips Electronics 

Philips Semiconductors

9 V UHF mixer/oscillator for TV and VCR

tuners

Product specification

TDA5634T

FEATURES

• Balanced mixer with a common base input

• 4-pin oscillator

• Local oscillator buffer output for external prescaler

• SAW filter preamplifier with a low output impedance to

drive the SAW filter directly

• Band gap voltage stabilizer for oscillator stability

• External IF filter between the mixer output and the IF

amplifier input.

APPLICATION

• UHF tuners for TV and VCR

• One band tuners.

GENERAL DESCRIPTION

The TDA5634T is an integrated circuit that performs the

UHF mixer/oscillator functions in TV and VCR tuners.

This low-power mixer/oscillator requires a power supply of

9 V and is available in a very small package.

The device gives the designer the capability to design an

economical and physically small tuner.

The tuner development time can be drastically reduced by

using this device.

The frequency band is determined by the external tank

circuit. It can be adapted to various standards.

QUICK REFERENCE DATA

SYMBOL

VP

IP

fRF

Gv

NF

Vo

PARAMETER

supply voltage

supply current

RF frequency

voltage gain

noise figure

output voltage causing 1% cross

modulation in channel

CONDITIONS

RF input; note 1

not corrected for image

MIN. TYP. MAX. UNIT

−

9.0 −

V

−

35

−

mA

430 −

860 MHz

−

36

−

dB

−

9

−

dB

−

121 −

dBµV

Note

1. The limits are related to the tank circuits used in Fig.7 and the intermediate frequency. Frequency bands may be

adjusted by the choice of external components.

ORDERING INFORMATION

TYPE

NUMBER

TDA5634T

NAME

SO16

PACKAGE

DESCRIPTION

plastic small outline package; 16 leads; body width 3.9 mm

VERSION

SOT109-1

1996 Nov 7

2

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