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Summary Infineon TUA6045 Half NIM Datasheet & Application Note (DVB-T Tuner Design Guide)

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This premium engineering document serves as the official, comprehensive Half NIM Application Note for the TUA6045 Single-Chip Mixer-Oscillator PLL IC by Infineon Technologies. It provides a full breakdown of RF/IF circuit mechanics, PCB design properties, registration programming protocols, and hardware verification methods optimized for European DVB-T (COFDM) applications.

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TUA6045 Half NIM Application Note




TUA6045 Half NIM Application Note




TUA6045 + BF5030W
BG5130R + BB565 + BB659C + BB689


Ver1.0, Released September 2006

Never stop thinking.

, TUA6045 Half NIM

Overview of the TUA6045 Half NIM

Half NIM with Single Conversion
Tuner
For European DVB-T
application
With Infineon Components :
TUA 6045 Single Chip Mixer-Oscillator PLL IC
with IF Amplifier
BF 5030W and BG5130R self biasing
MOSFETs
BB565, BB659C and BB689 Varactor
Diodes
BAS70-04 Bridge Rectifier
BC847BW BJT Transitor


This very small sized Half NIM consisting of a single conversion tuner designed for DVB-T(COFDM)
front-end in the frequency range from 66 to 858 MHz can be used with minimum modification for all
digital broadcasting reception. The Half NIM was developed for 3 band tuner concept, designed
without switching diodes based on the Infineon 3 band tuner IC. The IC is particularly suitable for
COFDM applications like DVB-T and ISDB-T that requires stringent close-in phase noise. It is also
suitable for ATSC, DAB and MobileTV Application. The IC provides a balanced SAW filter driver
output that is designed to drive a SAW filter directly.


The tuner is optimized for IF bandwidth = 8MHz and IF center frequency = 36MHz.
The frequency ranges of the tuner is as follows :

VHF I : 66 – 154 MHz
VHF II : 162 - 442 MHz
UHF : 450 - 858 MHz

All the passive and active components except air coils, 5 choke coil are SMD components. The PCB
is double-clad and the dimensions are mm.

Semiconductors:


1X TUA 6045 1 X BF 5030W
1X BG 5130R 7 X BB 565

4X BB 659C 4 X BB 689
1X BAS70-04 1 X BC847BW

TUA6045 Half NIM 1

Release September 2006 Ver 1.0

, TUA6045 Half NIM

CONTENT

1. Tuner Design ....................................................................................................................... 3
1.1 Circuit Concept …………………………………………………………………………... 3
1.2 UHF RF Block …………………………………………………………………………... 4
1.3 VHFH RF Block ………………………………………………………………………….. 4
1.4 VHFL RF Block …………………………………………………………………………... 4
1.5 Oscillator Resonator, PLL Loop Filter & Phase Noise ………………………………... 5
1.6 IF Block …………………………………………………………………………………….. 7

2. PCB ………………………………………………………………………………………………… 8

3. TUA6045 One Chip RF + IF Amplifier Tuner IC …………………………………………… 8
3.1 Highlights ………………………………………………………………………………….. 8
3.2 Block Diagram ……………………………………………………………………………... 9

4. Alignment ………………………………………………………………………………………… 10
4.1 Alignment Setup …………………………………………………………………………… 10
4.2 Alignment Procedure …………………………………………………………………….. 11

5. Measurement ……………………………………………………………………………………… 12
5.1 Electrical Characteristics …...…………………………………………………………… 12
5.2 Frequency Response ..………………………………………………………………….. 13
5.3 Measurement Results ..………………………………………………………………….. 14

6. Front End Interface …………………………………………………………………………….. 19
6.1 Bus Interface …………………………………………………………………………….. 19
6.2 Tuner PLL Programming …………………………………………………………………. 19
6.3 Bus Format ………………………………………………………………………………… 21
6.4 Bus Timing ………………………………………………………………………………… 22
6.5 Data Specification, Function and Default ………………………………………………. 25

7. Component List and Ordering Information ………………………………………………….. 32

8. Circuit and Layout …………………………………………………………………………….... 37
8.1 Schematic and Layout …………………………………………………………………… 37
8.2 Pinning and Outline Dimension ……………………………………………………….... 40

9. Automatic Tuner Test Setup of the Team …………………………………………………… 41




TUA6045 Half NIM 2

Release September 2006 Ver 1.0

, TUA6045 Half NIM

1. Tuner Design
1.1. Circuit Concept
The RF input signal is splitted by a simple high pass filter combined with IF & CB(Citizen Band) traps.
Instead of band switching with PIN diodes a very simple triplexer circuit is used. With a high inductive
coupling the antenna impedance is transformed to the tuned input circuits. The pre-selected signal is
then amplified by the high gain self biased MOSFET BF5030W. One BG5130R double-MOSFET can
be used for both VHF bands. In the following tuned bandpass filter stage, the channel is selected and
unwanted signals like adjacent channels and image frequency are rejected. Tracking traps of
prestages and capacitive image frequency compensations of band filters reject especially image
frequencies.

The conversion to IF is done in the one chip tuner-PLL IC, TUA 6045. TUA6045 is a real 3 band
tuner IC which has all the active parts for the 3 mixers, 3 oscillators, an IF driver stage, the complete
PLL functions including 3 PNP ports for the band switching, and a wideband AGC detector for internal
tuner AGC. Combined with the optimized loop filter, 4 bit programmable charge pump currents, the
balanced crystal oscillator, and the voltage controlled oscillators which have superb characteristics
The tuner can achieve distinguished phase noise performance suitable for all digital applications. The
balanced mixer output signal of the TUA6045 is designed to drive directly a SAW filter in the following
IF stage.

The tuner consumes less than 100 mA currents or 0.33 Watt power. This can be a big advantage for
portable or handheld appliances.




BG5130R




Fig 1. Circuit Concept Diagram of DVB-T Tuner

For the detailed circuit description please refer to Appendix A.




TUA6045 Half NIM 3

Release September 2006 Ver 1.0

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