Circuit Description
This integrated circuit permits the design of TV-tuners covering the entire frequency
range from 48 ... 900 MHz split into 3 frequency bands. The application is suitable for all
tuners in TV- and VCR-sets.
The integrated circuit includes 3 balanced mixers (double balanced mixer/ring mixer),
one unbalanced oscillator for VHF I and two balanced oscillators for VHF II and UHF, a
SAW-filter driver amplifier as well as a reference voltage source and a band switch.
Filters between tuner input and IC separate the TV-frequency signal into three 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 balanced mixer input of the IC which is a high-impedance
stage for the VHF I-range and a low-impedance stage for the VHF II- and UHF-range,
respectively. The input signal is mixed there with the oscillator signal from the activated
oscillator section and fed into common IF-stage for all bands. The IF-signal is further
amplified in a SAW-filter driver section in order to drive the SAW-filter with a low
impedance.
Type
Ordering Code
Package
TUA 2019-5X
Q67000-A5150
P-DSO-24-1 (SMD)
TUA 2019-5X
Q67006-A5150
P-DSO-24-1 Tape & Reel
VHF I / VHF II / UHF-Tuner IC
Preliminary Data
Bipolar IC
TUA 2019-5X
P-DSO-24-1
Features
q
Few external components
q
Frequency and amplitude-stable unbalanced
oscillator for the VHF I-frequency range
q
Frequency and amplitude-stable balanced oscillators
for the VHF II- and UHF-frequency range
q
Optimum decoupling of input frequency from oscillator
q
Double balanced mixer with wide dynamic range and
high-impedance inputs for the VHF I-frequency range
q
Double balanced mixer with wide dynamic range and
low-impedance inputs for the VHF II- and
UHF-frequency range
q
Low-impedance SAW-filter driver output
q
SAW-filter driver with high signal-handling capability
q
Internal band switch
q
Low-noise, internal reference voltage
q
Integrated 1st IF-bandpass filter
Semiconductor Group
1
02.95
Semiconductor Group
2
TUA 2019-5X
Pin Configuration
(top view)
P-DSO-24-1
TUA 2019-5X
Semiconductor Group
3
Pin Definitions and Functions
Pin No.
Symbol
Function
1
Osc. output 1
VHF I/ VHF II/ UHF-osc. signal output to PLL,
symmetrical to pin 2
2
Osc. output 2
VHF I/ VHF II/ UHF-osc. signal output to PLL,
symmetrical to pin 1
3
GND
Ground
4
VHF I-input 1
VHF I-mixer input high-impedance, symmetrical to pin 5
5
VHF I-input 2
VHF I-mixer input high-impedance, symmetrical to pin 4
6
VHF II-input 1
VHF II-mixer input low-impedance, symmetrical to pin 7
7
VHF II-input 2
VHF II-mixer input low-impedance, symmetrical to pin 6
8
UHF-input 1
UHF-mixer input low-impedance, symmetrical to pin 9
9
UHF-input 2
UHF-mixer input low-impedance, symmetrical to pin 8
10
+
V
S
Supply voltage
11
SAW-filter driv.
out 1
SAW-filter driver output, low impedance,
symmetrical to pin 12
12
SAW-filter driv.
out 2
SAW-filter driver output, low impedance,
symmetrical to pin 11
13
Band switch
VHF I/ VHF II/ UHF-band switch
14
UHF-osc.
input B1
UHF-osc. amplifier, high-impedance base input,
symmetrical to pin 17
15
UHF-osc.
output C2
UHF-osc. amplifier, high-impedance coll. output,
symmetrical to pin 16
16
UHF-osc.
output C1
UHF-osc. amplifier, high-impedance coll. output,
symmetrical to pin 15
17
UHF-osc.
input B2
UHF-osc. amplifier, high-impedance base input,
symmetrical to pin 14
18
VHF II-osc.
input B1
VHF II-osc. amplifier, high-impedance base input,
symmetrical to pin 21
Semiconductor Group
4
TUA 2019-5X
19
VHF II-osc.
output C2
VHF II-osc. amplifier, high-impedance collector output,
symmetrical to pin 20
20
VHF II-osc.
output C1
VHF II-osc. amplifier, high-impedance collector output,
symmetrical to pin 19
21
VHF II-osc.
input B2
VHF II-osc. amplifier, high-impedance base input,
symmetrical to pin 18
22
VHF I-osc.
coupling 1
VHF I-osc. coupling, collector output
23
GND
Ground
24
VHF I-osc.
coupling 2
VHF I-osc. coupling, base input
Pin Definitions and Functions (cont'd)
Pin No.
Symbol
Function
TUA 2019-5X
Semiconductor Group
5
Block Diagram
Semiconductor Group
6
TUA 2019-5X
Absolute Maximum Ratings
T
A
= 0 to 70
C
Parameter
Symbol
Limit Values
Unit
min.
max.
Supply voltage
V
S
V
10/3, 23
0.3
14
V
Current
I
10
60
mA
Switching voltage
V
13
0.3
+
V
S
V
According to application circuit 1, only the provided circuitry can be connected to pins
1, 2, 4, 5, 6, 7, 8, 9, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24
Junction temperature
T
j
150
C
Storage temperature
T
stg
40
125
C
Thermal resistance
R
th SA
75
K/W
Operating Range
Supply voltage
V
S
10
13.2
V
Supply current
I
10
23
53
mA
VHF I-mixer input frequency range
f
VHF I
30
500
MHz
VHF II-mixer input frequency range
f
VHF II
30
900
MHz
UHF-mixer input frequency range
f
UHF
30
900
MHz
VHF I-oscillator frequency range
f
OVHF I
30
500
MHz
VHF II-oscillator frequency range
f
OVHF II
30
900
MHz
UHF-oscillator frequency range
f
OUHF
30
900
MHz
Ambient temperature
T
A
0
70
C
TUA 2019-5X
Semiconductor Group
7
Characteristics
T
A
= 25
C;
V
S
= 12 V
Parameter
Symbol
Limit Values
Unit
Test Condition
Test
Circuit
min. typ.
max.
Current consumption
Current consumption
I
10
I
10
30
27
38
34
45
41
mA
mA
V
13
> 1.6 V
V
13
< 0.9 V
1
1
VHF I-Circuit Section
Switching voltage
V
13
0
1
V
1
Switching current
I
13
10
A
V
13
= 0.5 V
1
Oscillator frequency
range
f
VHF I
80
216
MHz
V
d
= 0 ... 28 V
1
Oscillator drift
Oscillator drift
Oscillator drift
f
VHF I
f
VHF I
f
VHF I
200
400
200
kHz
kHz
kHz
V
S
= 12 V
10 %
T
= 25
C
t
= 5 s up to 15 min.
after switching on
1
1
1
Oscillator level
Oscillator level
V
K
V
K
700
700
mVrms
mVrms
channel E2, at hot end
channel S10, at hot end
1
1
Oscillator level
Oscillator level
a
PLL
a
PLL
20
20
dBm
dBm
channel E2
channel S10
1
1
Oscillator output
impedance
R
1, 2
C
1, 2
100
2
pF
parallel equivalent circuit
parallel equivalent circuit
3
3
Harmonic wave ratio
interference level
a
1, 2
10
dB
V
HF
= 1 Vrms
1
Oscillator pulling
Oscillator pulling
Oscillator pulling
Oscillator pulling
V
4, 5
V
4, 5
V
4, 5
V
4, 5
100
100
80
80
108
108
88
88
dB/
V
dB/
V
dB/
V
dB/
V
f
= 10 kHz in channel E2
f
= 10 kHz in channel S10
f
int
= E2 + (N + 5 1 MHz)
f
int
= S10 + (N + 5 1 MHz)
1
1
1
1
Gain
Gain
G
VHF I
G
VHF I
27
27
dB
dB
channel E2
pin 4, 5 > 11, 12
channel S10
pin 4, 5 > 11, 12
1
1
Mixer noise figure
Mixer noise figure
NF
VHF I
NF
VHF I
7.5
7.5
9
9
dB
dB
channel E2 (DSB)
channel S10 (DSB)
2
2
Semiconductor Group
8
TUA 2019-5X
Interference voltage
Interference voltage
V
int
V
int
70
70
dB/
V
dB/
V
1 % cross mod.; E2
2
1 % cross mod.; S10
2
1
1
Mixer input
impedance
R
4, 5
C
4, 5
3
0.5
k
pF
parallel equivalent circuit
parallel equivalent circuit
3
3
IF-suppression
IF-suppression
a
IF
a
IF
20
20
dB
dB
channel E2
channel S10
1
1
VHF II-Circuit Section
Switching voltage
V
13
1.6
2.3
V
1
Switching current
I
13
10
30
A
V
13
= 2.1 V
1
Oscillator frequency
range
f
VHF II
190
485
MHz
V
d
= 0 ... 28 V
1
Oscillator drift
Oscillator drift
Oscillator drift
f
VHF II
f
VHF II
f
VHF II
400
500
200
kHz
kHz
kHz
V
S
= 12 V
10 %
T
= 25
C
t
= 5 s up to 15 min.
after switching on
1
1
1
Oscillator level
Oscillator level
a
PLL
a
PLL
20
20
dBm
dBm
E5 balanced tested
S37 balanced tested
1
1
Oscillator output
impedance
R
1, 2
C
1, 2
100
2
pF
parallel equivalent circuit
parallel equivalent circuit
3
3
Harmonic wave ratio
interference level
a
1, 2
10
dB
V
HF
= 1 Vrms
1
Oscillator pulling
Oscillator pulling
Oscillator pulling
Oscillator pulling
V
6, 7
V
6, 7
V
6, 7
V
6, 7
100
100
80
80
108
108
88
88
dB/
V
dB/
V
dB/
V
dB/
V
f
= 10 kHz in channel E5
f
= 10 kHz in channel S37
f
int
= K5 + (N + 5 1 MHz)
f
int
= S37 + (N + 5 1 MHz)
1
1
1
1
Gain
Gain
G
VHF II
G
VHF II
41
41
dB
dB
channel E5
pin 6, 7 > 11, 12
channel S37
pin 6, 7 > 11, 12
1
1
Characteristics (cont'd)
T
A
= 25
C;
V
S
= 12 V
Parameter
Symbol
Limit Values
Unit
Test Condition
Test
Circuit
min. typ.
max.
TUA 2019-5X
Semiconductor Group
9
Mixer noise figure
Mixer noise figure
NF
VHF II
NF
VHF II
7.5
7.5
9
9
dB
dB
channel E5 (DSB)
channel S37 (DSB)
2
2
Interference voltage
Interference voltage
V
int
V
int
97
97
100
100
dB/
V
dB/
V
1 % cross mod.; E5
2
1 % cross mod.; S37
2
1
1
Mixer input
impedance
R
6, 7
L
6, 7
25
10
nH
serial equivalent circuit
serial equivalent circuit
3
3
IF-suppression
IF-suppression
a
IF
a
IF
20
20
dB
dB
channel E5
channel S37
1
1
UHF-Circuit Section
Switching voltage
V
13
3.2
V
S
V
1
Switching current
I
13
60
300
A
V
13
=
V
S
1
Oscillator frequency
range
f
UHF
470
900
MHz
V
d
= 0 ... 28 V
1
Oscillator drift
Oscillator drift
Oscillator drift
f
UHF
f
UHF
f
UHF
400
800
600
kHz
kHz
kHz
V
S
= 12 V
10 %
T
= 25
C
t
= 5 s up to 15 min.
after switching on
1
1
1
Oscillator level
Oscillator level
V
1, 2
V
1, 2
20
20
dBm
dBm
E21 balanced tested
E68 balanced tested
1
1
Oscillator output
impedance
R
1, 2
C
1, 2
100
2
pF
parallel equivalent circuit
parallel equivalent circuit
3
3
Harmonic wave ratio
interference level
a
1, 2
10
dB
V
HF
= 1 Vrms
1
Oscillator pulling
Oscillator pulling
Oscillator pulling
Oscillator pulling
V
8, 9
V
8, 9
V
8, 9
V
8, 9
100
100
80
80
108
108
88
88
dB/
V
dB/
V
dB/
V
dB/
V
f
= 10 kHz in channel E21
f
= 10 kHz in channel E68
f
int
= E21 + (N + 5 1 MHz)
f
int
= E68 + (N + 5 1 MHz)
1
1
1
1
Characteristics (cont'd)
T
A
= 25
C;
V
S
= 12 V
Parameter
Symbol
Limit Values
Unit
Test Condition
Test
Circuit
min. typ.
max.
Semiconductor Group
10
TUA 2019-5X
Gain
Gain
G
UHF
G
UHF
41
41
dB
dB
channel E21
pin 8, 9 > 11, 12
channel E68
pin 8, 9 > 11, 12
2
2
Mixer noise figure
Mixer noise figure
NF
UHF
NF
UHF
8
9
10
11
dB
dB
channel E21 (DSB)
channel E68 (DSB)
2
2
Interference voltage
Interference voltage
V
int
V
int
97
97
100
100
dB/
V
dB/
V
1 % cross mod.; E21
2
1 % cross mod.; E68
2
1
1
Mixer input
impedance
R
8, 9
L
8, 9
25
10
nH
serial equivalent circuit
serial equivalent circuit
3
3
IF-suppression
a
IF
20
dB
channel E21
1
SAW-Filter Driver Section
SAW-filter driver
output impedance
R
11, 12
C
11, 12
75
95
nH
serial equivalent circuit
serial equivalent circuit
4
4
Output voltage
linearity
V
AOFW
24
dBm
total harmonic distortion
factor
THD
= 5 %
Characteristics (cont'd)
T
A
= 25
C;
V
S
= 12 V
Parameter
Symbol
Limit Values
Unit
Test Condition
Test
Circuit
min. typ.
max.
TUA 2019-5X
Semiconductor Group
11
Test Circuit 1
Semiconductor Group
12
TUA 2019-5X
Test Circuit 2
TUA 2019-5X
Semiconductor Group
13
Test Circuit 3
Test Point
Test Frequency in MHz
Pin x
Pin y
Oscillator output impedance
100
1
2
Mixer input impedance VHF 1
100
4
5
Mixer input impedance VHF 2
300
6
7
Mixer input impedance UHF
600
8
9
Measurement of the 4-pole matrix S11, S12, S21, S22 and
calculation of the
-equivalent circuit, which follows from that.
Semiconductor Group
14
TUA 2019-5X
Test Circuit 4
Measurement of the 4-pole matrix at 37 MHz S11, S12, S21, S22
and calculation of the
-equivalent circuit, which follows from that.
TUA 2019-5X
Semiconductor Group
15
Plastic Package, P-DSO-24-1 (SMD)
(Plastic Dual Small Outline)
GPS05144
Sorts of Packing
Package outlines for tubes, trays etc. are contained in our
Data Book "Package Information"
Dimensions in mm
SMD = Surface Mounted Device
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