TUA2009X

Features: ·Few external components·Frequency and amplitude-stable unbalanced oscillator for the VHF I-frequency range·Frequency and amplitude-stable balanced oscillators for the VHF II- and UHF-frequency range·Optimum decoupling of input frequency from oscillator·Double balanced mixer with wide dy...

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SeekIC No. : 004533787 Detail

TUA2009X: Features: ·Few external components·Frequency and amplitude-stable unbalanced oscillator for the VHF I-frequency range·Frequency and amplitude-stable balanced oscillators for the VHF II- and UHF-freq...

floor Price/Ceiling Price

Part Number:
TUA2009X
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/8

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Product Details

Description



Features:

·Few external components
·Frequency and amplitude-stable unbalanced oscillator for the VHF I-frequency range
·Frequency and amplitude-stable balanced oscillators for the VHF II- and UHF-frequency range
·Optimum decoupling of input frequency from oscillator
·Double balanced mixer with wide dynamic range and highimpedance inputs for the VHF I-frequency range
·Double balanced mixer with wide dynamic range and lowimpedance inputs for the VHF II- and UHF-frequency range
·Low-impedance SAW-filter driver output
·SAW-filter driver with high signal-handling capability
·Internal band switch
·Low-noise, internal reference voltage
·Integrated 1st IF-bandpass filter



Pinout

  Connection Diagram


Specifications

TA = 0 to 70
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



Description

This integrated circuit TUA2009X 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 TUA2009X 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 MOSFETamplifier,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 UHFrange,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




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