tua2019-5x ETC-unknow, tua2019-5x Datasheet

tua2019-5x

Manufacturer Part Number

tua2019-5x

Description

Uhf-tuner

Manufacturer

ETC-unknow

Datasheet

1.TUA2019-5X.pdf (15 pages)

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VHF I / VHF II / UHF-Tuner IC

Preliminary Data

Features

Type

TUA 2019-5X

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

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

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

Ordering Code

Q67000-A5150

Q67006-A5150

P-DSO-24-1

Package

P-DSO-24-1 (SMD)

P-DSO-24-1 Tape & Reel

TUA 2019-5X

Bipolar IC

02.95

Related parts for tua2019-5x

tua2019-5x Summary of contents

Page 1

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 ...

Page 2

Pin Configuration (top view) Semiconductor Group P-DSO-24-1 2 TUA 2019-5X ...

Page 3

Pin Definitions and Functions Pin No. Symbol 1 Osc. output 1 2 Osc. output 2 3 GND 4 VHF I-input 1 5 VHF I-input 2 6 VHF II-input 1 7 VHF II-input 2 8 UHF-input 1 9 UHF-input 2 V ...

Page 4

Pin Definitions and Functions (cont’d) Pin No. Symbol 19 VHF II-osc. output C2 20 VHF II-osc. output C1 21 VHF II-osc. input B2 22 VHF I-osc. coupling 1 23 GND 24 VHF I-osc. coupling 2 Semiconductor Group Function VHF II-osc. ...

Page 5

Block Diagram Semiconductor Group 5 TUA 2019-5X ...

Page 6

Absolute Maximum Ratings Parameter V Supply voltage S Current Switching voltage According to application circuit 1, only the provided circuitry can be connected to pins ...

Page 7

Characteristics Parameter Symbol I Current consumption 10 I Current consumption 10 VHF I-Circuit Section V Switching voltage 13 I Switching current 13 Oscillator frequency f VHF I range f Oscillator ...

Page 8

Characteristics (cont’ Parameter Symbol V Interference voltage int V Interference voltage int Mixer input impedance IF-suppression IF a IF-suppression IF VHF II-Circuit Section ...

Page 9

Characteristics (cont’ Parameter Symbol NF Mixer noise figure VHF II NF Mixer noise figure VHF II Interference voltage V int V Interference voltage int R Mixer input ...

Page 10

Characteristics (cont’ Parameter Symbol G Gain UHF G Gain UHF NF Mixer noise figure UHF NF Mixer noise figure UHF Interference voltage V int V Interference voltage int R Mixer ...

Page 11

Test Circuit 1 Semiconductor Group 11 TUA 2019-5X ...

Page 12

Test Circuit 2 Semiconductor Group 12 TUA 2019-5X ...

Page 13

Measurement of the 4-pole matrix S11, S12, S21, S22 and calculation of the -equivalent circuit, which follows from that. Test Circuit 3 Test Point Oscillator output impedance Mixer input impedance VHF 1 Mixer input impedance VHF 2 Mixer input impedance ...

Page 14

Measurement of the 4-pole matrix at 37 MHz S11, S12, S21, S22 and calculation of the -equivalent circuit, which follows from that. Test Circuit 4 Semiconductor Group 14 TUA 2019-5X ...

Page 15

Plastic Package, P-DSO-24-1 (SMD) (Plastic Dual Small Outline) Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book “Package Information” SMD = Surface Mounted Device Semiconductor Group 15 TUA 2019-5X GPS05144 Dimensions in mm ...

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