tda5633t NXP Semiconductors, tda5633t Datasheet - Page 2

• Manufacturer Part Number: tda5633t
• Description: 9 V Vhf And Uhf Mixers/oscillators For Tv And Vcr Cable Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
APPLICATIONS
QUICK REFERENCE DATA
Note
1. The limits are related to the tank circuits used in Fig.10 and the intermediate frequency. Frequency bands may be
1996 Aug 16
V
I
f
G
NF
V
P
RF
Balanced mixer with a common emitter input for band A
2-pin oscillator for band A
Balanced mixer with a common base input for band C
4-pin oscillator for band C
Local oscillator buffer output for external prescaler
SAW filter preamplifier with a low output impedance to
drive a 75
Band gap voltage stabilizer for oscillator stability
Electronic band switch
External IF filter connected between the mixer output
and the IF amplifier input.
Cable tuners for TV and VTR; switched concept for VHF
Recommended RF bands for Europe:
48.25 to 105.25 MHz, 112.25 to 294.25 MHz and
471.25 to 855.25 MHz
Recommended RF bands for the USA:
55.25 to 133.25 MHz, 139.25 to 361.25 MHz and
367.25 to 801.25 MHz.
P
o
9 V VHF and UHF mixers/oscillators for
TV and VCR cable tuners
v
SYMBOL
adjusted by the choice of external components. Another UHF frequency range is available by modifying the tank
circuit. The modification enables the following frequency range:
a) RF frequencies from 361.25 to 801.25 MHz (picture carrier).
b) Oscillator frequencies from 407 to 847 MHz. For this UHF range, L4 = 3 turns (diameter = 3.5 mm).
load
supply voltage
supply current
frequency range (picture carrier)
voltage gain
noise figure
output voltage to obtain 1% cross
modulation in channel
PARAMETER
RF input; band A; note 1
RF input; band C; note 1
band A (75
band C (75
band A (75
band C (75
band A (75
band C (75
2
DESCRIPTION
The TDA5632 and TDA5633 are monolithic integrated
circuits that perform VHF and UHF mixer/oscillator
functions in TV and VCR cable tuners. With correct
oscillator application and by using a switchable inductor to
split the VHF band into two sub-bands, the full VHF/UHF
TV bands can be covered. These low-power
mixers/oscillators require a power supply of 9 V and are
available in a very small package.
The devices provide the designer with the capability to
design an economical and physically small cable tuner.
The tuner development time can be drastically reduced by
using this device.
Frequency bands are determined by the external tank
circuit. They can be adapted to various standards.
CONDITIONS
load)
load)
load)
load)
load)
load)
TDA5632; TDA5633
57.5
469.5
MIN.
9.0
40
19
30
10
9.5
110
110
TYP.
Product specification
357.5
887.5
MAX.
V
mA
MHz
MHz
dB
dB
dB
dB
dB V
dB V
UNIT