Philips Semiconductors
Product specification
9 V VHF, hyperband and UHF mixers-
oscillators for TV and VCR 3-band tuners
FEATURES
•
Balanced mixer with a common emitter input for band A
(single input)
•
2-pin oscillator for bands A and B
•
Balanced mixer with a common base input for
bands B and C (balanced input)
•
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
Ω
load
•
Band gap voltage stabilizer for oscillator stability
•
Electronic band switch
•
External IF filter between the mixer output and the IF
amplifier input
•
Pin to pin compatible with TDA5636B; TDA5637B family
(same function with symmetrical IF output).
APPLICATIONS
•
3-band all-channel TV and VCR tuners
•
Any standard.
TDA5636; TDA5637
GENERAL DESCRIPTION
The TDA5636 and TDA5637 are monolithic integrated
circuits that perform the mixer/oscillator functions for
bands A, B and C in TV and VCR tuners. These low-power
mixer/oscillators require a power supply of 9 V and are
available in a very small package.
The devices give the designer the capability to design an
economical and physically small 3-band tuner.
They are suitable for European standards, as illustrated in
Fig.17, with the following RF bands:
•
48.25 to 168.25 MHz
•
175.25 to 447.25 MHz
•
455.25 to 855.25 MHz.
With an appropriate tuned circuit, they are also suitable for
NTSC all-channel tuners (USA and Japan). The tuner
development time can be drastically reduced by using
these devices.
These circuits belong to the TDA5636B/TDA5637B family
which has exactly the same function with an IF amplifier
having a symmetrical IF output to drive a SAW filter
directly. It is possible to build tuners with either an
asymmetrical or a symmetrical IF output with one main
tuner lay-out.
1996 Jun 10
2
Philips Semiconductors
Product specification
9 V VHF, hyperband and UHF mixers-
oscillators for TV and VCR 3-band tuners
QUICK REFERENCE DATA
SYMBOL
V
P
I
P
PARAMETER
supply voltage
supply current
band A
band B
band C
f
RF
frequency range
RF input; band A; note 1
RF input; band B; note 1
RF input; band C; note 1
G
v
voltage gain
band A; R
L
= 75
Ω
band B; R
L
= 75
Ω
band C; R
L
= 75
Ω
NF
noise figure
band A; R
L
= 75
Ω
band B; R
L
= 75
Ω
band C; R
L
= 75
Ω
V
o
output voltage to get 1% cross
modulation in channel
band A; R
L
= 75
Ω
band B; R
L
= 75
Ω
band C; R
L
= 75
Ω
Note
CONDITIONS
TDA5636; TDA5637
MIN.
−
−
−
−
45
160
430
−
−
−
−
−
−
−
−
−
TYP.
9.0
45
41
44
−
−
−
20
31
31
7.5
6
7
110
110
110
MAX.
−
−
−
−
180
470
860
−
−
−
−
−
−
−
−
−
UNIT
V
mA
mA
mA
MHz
MHz
MHz
dB
dB
dB
dB
dB
dB
dBµV
dBµV
dBµV
1. The limits are related to the tank circuits used in Fig.17 and the intermediate frequency.
Frequency bands may be adjusted by the choice of external components.
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
TDA5636T
TDA5636M
TDA5637T
TDA5637M
SO24
SSOP24
SO24
SSOP24
DESCRIPTION
plastic small outline package; 24 leads; body width 7.5 mm
plastic shrink small outline package; 24 leads; body width 5.3 mm
plastic small outline package; 24 leads; body width 7.5 mm
plastic shrink small outline package; 24 leads; body width 5.3 mm
VERSION
SOT137-1
SOT340-1
SOT137-1
SOT340-1
1996 Jun 10
3
Philips Semiconductors
Product specification
9 V VHF, hyperband and UHF mixers-
oscillators for TV and VCR 3-band tuners
PINNING
PIN
SYMBOL
TDA5636
CIN1
CIN2
RFGND
BIN1
BIN2
AIN
V
P
MIXOUT1
MIXOUT2
GND1
LOOUT1
LOOUT2
IFOUT
IFGND
BS
GND2
BOSCOC
COSCIB1
BOSCIB
COSCOC1
COSCOC2
AOSCOC
COSCIB2
AOSCIB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
TDA5637
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
band C input 1
band C input 2
ground for RF inputs
band B input 1
band B input 2
band A input
supply voltage
mixers output 1
mixers output 2
ground 1 (0 V)
TDA5636; TDA5637
DESCRIPTION
local oscillator amplifier output 1
local oscillator amplifier output 2
IF amplifier output
IF amplifier ground
electronic band switch input
ground 2 (0 V)
band B oscillator output collector
band C oscillator input base 1
band B oscillator input base
band C oscillator output collector 1
band C oscillator output collector 2
band A oscillator output collector
band C oscillator input base 2
band A oscillator input base
1996 Jun 10
5
Microcontroller MCU
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