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TUA 2019-5X

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 wi...

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SeekIC No. : 004533783 Detail

TUA 2019-5X: 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-f...

TUA 2019-5X Data Sheet

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Part Number:
TUA 2019-5X
Supply Ability:
5000

Price Break

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

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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 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


Pinout

Connection Diagram


Specifications

Parameter
Symbol
Limit Values
min.
max.
Supply voltage VS
V10/3, 23
0.3
14
V
Current
I10
60
mA
Switching voltage
V13
0.3
+ VS
V
According to application circuit 1, only the provided circuitry can be connected to pins
1, 2, 4, 5, 6, 7, 8, 9, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24
Junction temperature
Tj
150
°C
Storage temperature
Tstg
40
125
°C
Thermal resistance
Rth SA
75
K/W
Supply voltage
VS
10
13.2
V
Supply current
I10
23
53
mA
VHF I-mixer input frequency range
fVHF I
30
500
MHz
VHF II-mixer input frequency range
fVHF II
30
900
MHz
UHF-mixer input frequency range
fUHF
30
900
MHz
VHF I-oscillator frequency range
fOVHF I
30
500
MHz
VHF I-oscillator frequency range fOVHF II 30 900 MHz
UHF-oscillator frequency range fOUHF 30 900 MHz
Ambient temperature
TA
0
70
°C



Description

This integrated circuit TUA 2019-5X 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 TUA 2019-5X 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.




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