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TDA6149-5X

Features: `Input sensitivity approx. 40 dBm` Symmetrical, low impedance IF input` One AFC output providing DC voltage S-curve` Reduced external components.ApplicationUsed in satellite indoor units.PinoutSpecifications Parameter Symbol Limit Values Unit Remarks min. max. Supply vo...

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TDA6149-5X: Features: `Input sensitivity approx. 40 dBm` Symmetrical, low impedance IF input` One AFC output providing DC voltage S-curve` Reduced external components.ApplicationUsed in satellite indoor units....

TDA6149-5X Data Sheet

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Part Number:
TDA6149-5X
Supply Ability:
5000

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

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Product Details

Description



Features:

` Input sensitivity approx. 40 dBm
` Symmetrical, low impedance IF input
` One AFC output providing DC voltage S-curve
` Reduced external components.


Application

Used in satellite indoor units.


Pinout

Connection Diagram


Specifications

Parameter Symbol Limit Values Unit Remarks
min. max.
Supply voltage Vs 0 6 V
AGC-control voltage output V1 1 13 V Open collector
AGC-threshold input V2 0.3 2 V
Demodulator LC-circuit input V3,4 0.3 3 V
Video P/N-switching V6 0.3 6 V
AFC-control V9 0 5 V  
AFC-offset input V10 2 3 V
AFC-window width V11 1 5 V
AFC-lowpass filter V9,10 0 1 mF
Video output V12 1 5 V
IF-inputs V14,15 0.3 3 V
AGC-lowpass filter V16 0.3 5 V
Junction temperature Tj   150 oC
Storage temperature Tstg -40 125 oC
Thermal resistance Rth SA 125 K/W
Operating Range
Supply voltage VS 4.5 5.5 V
Input frequency range f15 300 900 MHz
Ambient temperature
in operation		 TA 0 70 oC





Description

By capacitive coupling, the FM modulated satellite IF signal TDA6149-5X is fed into the input of a symmetrical limiter amplifier. Asymmetrical operation of this limiter amplifier is also possible, if one of the two inputs is blocked against high frequency signals. The output signal of the amplifier TDA6149-5X is divided by four and sent directly as well as phase shifted to the quadrature demodulator and a following video amplifier. The phase shifting is done using an external LC tank circuit.

The AFC signal TDA6149-5X is derived from the video output by means of a low pass filter. The response of the AFC can be adjusted my means of external components connected to an internal operational amplifier.

The information for the field strength of the FM modulated IF satellite signal of TDA6149-5X is available as a DC voltage at the AGC output. The AGC threshold can be adjusted by a potentiometer. The polarity of the demodulated video signal TDA6149-5X can be inverted by an external switching voltage fed into the polarity switch input (pin 6).




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