VHF/UHF-Tuner IC
MTI 3006X
Bipolar IC
Features
q
q
q
q
q
q
q
Few external components
Frequency and amplitude-stable balanced oscillator
for VHF (I and II) and UHF
Mixer stages with optimized suppression of
oscillator and input frequency at IF-output
Mixer with low intermodulation if large input signals
are applied
Balanced mixer with wide dynamic range and
low-impedance inputs
Internal band switch
Low-noise, internal reference voltage
Ordering Code
Q67000-A5152
Q67006-A5152
Package
P-DSO-20-1
Type
MTI 3006X
MTI 3006X
P-DSO-20-1 (SMD)
P-DSO-20-1 Tape & Reel (SMD)
Functional Description and Application
This integrated circuit permits the design of TV-tuners covering the entire frequency
range from 48 … 900 MHz split into 2 parts with 3 frequency bands.
The application is suitable for all tuners in TV-and VCR-sets.
Circuit Description
This IC includes 2 balanced mixers (double balanced mixer/ring mixer), two balanced
oscillators for VHF (I and II) and UHF, a reference voltage source and band switch.
Filters between tuner input and IC separate the TV-frequency signal into two bands. The
band switch ensures that only one band at a time is activated. In the activated band the
signal passes a frontend stage with MOSFET-amplifier, a double-tuned bandpass filter
and is then fed to the activated balanced mixer input of the IC which is a low-impedance
stage for the VHF- and UHF-range, respectively.
The input signal is mixed there with the oscillator signal from the activated oscillator
section and fed to a common IF-stage for all bands.
Semiconductor Group
1
12.94
MTI 3006X
Pin Configuration
(top view)
Pin Definitions and Functions
Pin No. Symbol
1
2
3
GND
UHF Osc. Input 1
UHF Osc. Output 1
Function
Ground
UHF-oscillator amplifier, high-impedance base input,
symmetrical to pin 5
UHF-oscillator amplifier, high-impedance collector
output, symmetrical to pin 4
Semiconductor Group
2
MTI 3006X
Pin Definitions and Functions
(cont’d)
Pin No. Symbol
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
UHF Osc. Output 2
UHF Osc. Input 2
VHF Osc. Input 1
VHF Osc. Output 1
VHF Osc. Output 2
VHF Osc. Input 2
Band Switching
Mixer Output 1
Mixer Output 2
+
V
S
VHF Input 1
VHF Input 2
UHF Input 1
UHF Input 2
GND
Osc. Output 1
Osc. Output 2
Function
UHF-oscillator amplifier, high-impedance collector
output, symmetrical to pin 3
UHF-oscillator amplifier, high-impedance base input,
symmetrical to pin 2
VHF-oscillator amplifier, high-impedance base input,
symmetrical to pin 9
VHF-oscillator amplifier, high-impedance collector
output, symmetrical to pin 8
VHF-oscillator amplifier, high-impedance collector
output, symmetrical to pin 7
VHF-oscillator amplifier, high-impedance base input,
symmetrical to pin 6
VHF/UHF-band switching
Open collector mixer output, high-impedance,
symmetrical to pin 12
Open collector mixer output, high-impedance,
symmetrical to pin 11
Supply voltage
VHF-mixer input low-impedance, symmetrical to pin 15
VHF-mixer input low-impedance, symmetrical to pin 14
UHF-mixer input low-impedance, symmetrical to pin 17
UHF-mixer input low-impedance, symmetrical to pin 16
Ground
VHF/UHF-oscillator signal output to PLL, symmetrical to
pin 20
VHF/UHF-oscillator signal output to PLL, symmetrical to
pin 19
Semiconductor Group
3
MTI 3006X
Block Diagram
Semiconductor Group
4
MTI 3006X
Absolute Maximum Ratings
T
A
= 0 to 70
°C
Parameter
Symbol
Limit Values
min.
Supply voltage
Switching voltage
max.
14.5
V
V
Unit
V
11, 12, 13
V
10
–
0.3
–
0.3
V
S
According to the test circuit 1, only the provided circuitry can be connected to pins 1 to
9 and 14 to 20
Junction temperature
Storage temperature
Thermal resistance
Operating Range
Supply voltage
VHF-mixer input
frequency range
UHF-mixer input
frequency range
VHF-oscillator
frequency range
UHF-oscillator
frequency range
Ambient temperature
T
j
T
stg
R
th
–
40
150
125
125
°C
°C
K/W
V
S
f
VHF
f
UHF
f
OVHF
f
OUHF
T
A
10
30
30
30
30
0
13.2
500
900
500
900
70
V
MHz
MHz
MHz
MHz
°C
Semiconductor Group
5
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