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Post subject: AM - FM Radio Receiver circuit
 Posted: Jan 06, 2008 - 02:18 PM
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Site Admin
Joined: Dec 07, 2003
Posts: 455
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AM - FM Radio Receiver circuit
FEATURES
· Wide supply voltage range: 2.0 to 12 V
· Low current consumption: 7.5 mA at AM, 9.0 mA at FM
· High selectivity with distributed IF gain
· LED driver for tuning indication
· High input sensitivity: 1.6 mV/m (AM), 2.0 mV (FM) for 26dB S/N
· Good strong signal behaviour: 10 V/m at AM, 500 mV at FM
· Low output distortion: 0.8% at AM, 0.3% at FM
· Designed for simple and reliable PC-board layout
· High impedance MOSFET input on AM
APPLICATIONS
· Portable AM/FM radio
· Clock radio
· Personal headphone radio
DESCRIPTION
The TEA5710 is a high performance Bimos IC for use in
AM/FM radios. All necessary functions are integrated:
from AM and FM front-end to detector output stages.
AM - FM Radio Receiver circuit |
Last edited by Admin on Mar 30, 2010 - 03:01 PM; edited 1 time in total
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Post subject: Please Click to support this site
Posted: Jan 06, 2008 - 02:18 PM
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AdSense
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Post subject: FM Radio circuit
Posted: Mar 12, 2010 - 01:57 PM
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Site Admin
Joined: Dec 07, 2003
Posts: 455
Status: Offline
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The TDA7000 is a monolithic integrated circuit for mono FM portable radios, where a minimum on peripheral components
is important (small dimensions and low costs).
The IC has an FLL (Frequency-Locked-Loop) system with an intermediate frequency of 70 kHz. The i.f. selectivity is obtained by active RC filters. The only function which needs alignment is the resonant circuit for the oscillator, thus selecting the reception frequency. Spurious reception is avoided by means of a mute circuit, which also eliminates too
noisy input signals. Special precautions are taken to meet the radiation requirements.
The TDA7000 includes the following functions:
· R.F. input stage
· Mixer
· Local oscillator
· I.F. amplifier/limiter
· Phase demodulator
· Mute detector
· Mute switch
FM Radio circuit (c)Philips |
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