TDA7021T

Features: * RF input stage* Mixer* Local oscillator* IF amplifier/limiter* Frequency detector* Mute circuit* MTS compatible * Loop amplifier* Internal reference circuit* LF amplifier for- mono earphone amplifier or- MUX filter* Field-strength dependent channel separation controlfacilityApplicatio...

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SeekIC No. : 004516530 Detail

TDA7021T: Features: * RF input stage* Mixer* Local oscillator* IF amplifier/limiter* Frequency detector* Mute circuit* MTS compatible * Loop amplifier* Internal reference circuit* LF amplifier for- mono earp...

floor Price/Ceiling Price

Part Number:
TDA7021T
Supply Ability:
5000

Price Break

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

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268 Transactions

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Upload time: 2021/1/22

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Product Details

Description



Features:

* RF input stage
* Mixer
* Local oscillator
* IF amplifier/limiter
* Frequency detector
* Mute circuit
* MTS compatible

* Loop amplifier
* Internal reference circuit
* LF amplifier for
- mono earphone amplifier or
- MUX filter
* Field-strength dependent channel separation control
facility




Application

These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.



Specifications

PARAMETER CONDITIONS SYMBOL MIN. MAX. UNIT
Supply voltage (pin 4)   VP= V4-3 - - 7,0 V
Oscillator voltage   V5-4 VP-0,5
VP + 0,5
V
Storage temperature range   Tstg -55 +150 °C
Operating ambient temperature range   Tamb -10 +70 °C



Description

The TDA7021T integrated radio receiver circuit is for portable radios, stereo as well as mono, where a minimum of
periphery is important in terms of small dimensions and low cost. TDA7021T is fully compatible for applications using the
low-voltage micro tuning system (MTS). The IC has a frequency locked loop (FLL) system with an intermediate frequency
of 76 kHz. The selectivity is obtained by active RC filters. The only function of TDA7021T to be tuned is the resonant frequency of the
oscillator. Interstation noise as well as noise from receiving weak signals is reduced by a correlation mute system.

Special precautions of TDA7021T have been taken to meet local oscillator radiation requirements. Because of the low intermediate
frequency, low pass filtering of the MUX signal is required to avoid noise when receiving stereo. 50 kHz roll-off
compensation, needed because of the low pass characteristic of the FLL, is performed by the integrated LF amplifier.
For mono application this amplifier TDA7021T can be used to directly drive an earphone. The field-strength detector enables
field-strength dependent channel separation control.




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