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TUA2009X Schematic ( PDF Datasheet ) - Siemens Semiconductor Group

Teilenummer TUA2009X
Beschreibung VHF I / VHF II / UHF-Tuner IC
Hersteller Siemens Semiconductor Group
Logo Siemens Semiconductor Group Logo 




Gesamt 16 Seiten
TUA2009X Datasheet, Funktion
VHF I / VHF II / UHF-Tuner IC
Preliminary Data
TUA 2009X
TUA 2009XS
Bipolar IC
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
P-DSO-24-1
P-SSOP-24-1
Type
TUA 2009X
TUA 2009X
TUA 2009XS
Ordering Code
Q67000-A5113
Q67006-A5113
Q67006-A5202
Package
P-DSO-24-1 (SMD)
P-DSO-24-1 Tape & Reel
P-SSOP-24-1 Tape & Reel
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.
Semiconductor Group
1
12.94






TUA2009X Datasheet, Funktion
TUA 2009X
TUA 2009XS
Absolute Maximum Ratings
TA = 0 to 70 °C
Parameter
Symbol
Limit Values Unit
min.
max.
Supply voltage VS
V15/2, 23
0.3
14
V
Current
I15 60 mA
Switching voltage
V12
0.3
+ VS
V
According to application circuit 1, only the provided circuitry can be connected to pins
1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 16, 17, 18, 19, 20, 21, 23, 24
Junction temperature
Tj
Storage temperature
Tstg
Thermal resistance P-DSO-24-1 Rth SA
P-SSOP-24-11) Rth SA
Operating Range
150 °C
40 125 °C
75 K/W
83 K/W
Supply voltage
VS
Supply current
I15
VHF I-mixer input frequency range fVHF I
VHF II-mixer input frequency range fVHF II
UHF-mixer input frequency range fUHF
VHF I-oscillator frequency range fOVHF I
VHF II-oscillator frequency range fOVHF II
UHF-oscillator frequency range
fOUHF
Ambient temperature
TA
10
23
30
30
30
30
30
30
0
13.2
V
53 mA
500 MHz
900 MHz
900 MHz
500 MHz
900 MHz
900 MHz
70 °C
1) Tested with an application oriented IC substitute inside the tuner box
Semiconductor Group
6

6 Page









TUA2009X pdf, datenblatt
TUA 2009X
TUA 2009XS
Test Circuit 2
Semiconductor Group
12

12 Page





SeitenGesamt 16 Seiten
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