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參數(shù)資料
| 型號(hào)： | TUA2009XS |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | 3-BAND, VIDEO TUNER, PDSO24 |
| 封裝： | PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 574K |
| 代理商： | TUA2009XS |
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 2009X
Q67000-A5113
P-DSO-24-1 (SMD)
TUA 2009X
Q67006-A5113
P-DSO-24-1 Tape & Reel
TUA 2009XS
Q67006-A5202
P-SSOP-24-1 Tape & Reel
VHF I / VHF II / UHF-Tuner IC
Preliminary Data
Bipolar IC
TUA 2009X
TUA 2009XS
P-DSO-24-1
P-SSOP-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
12.94
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| TUA4306 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications |
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