TDA5634T Datasheet, PDF (2/20 Pages) NXP Semiconductors – 9 V UHF mixer/oscillator for TV and VCR tuners

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
V_P
I_P
f_RF
G_v
NF
V_o
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