Datasheet > Q67000-A5150

Q67000-A5150

更新时间： 2024-02-27 07:45:16

品牌	Logo	应用领域
英飞凌 - INFINEON		/
页数	文件大小	规格书
15页	438K
描述
VHF I / VHF II / UHF-Tuner IC

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数据手册

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Q67000-A5150 数据手册

TUA 2019-5X

Bipolar IC

VHF I / VHF II / UHF-Tuner IC

Preliminary Data

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

high-impedance inputs for the VHF I-frequency range

● Double balanced mixer with wide dynamic range and

low-impedance inputs for the VHF II- and

UHF-frequency range

P-DSO-24-1

● 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

Type

Ordering Code

Q67000-A5150

Q67006-A5150

Package

TUA 2019-5X

P-DSO-24-1 (SMD)

P-DSO-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

02.95

12 3 4 5 6 7...15

中文翻译

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