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TDA1572T

NXP
Part Number TDA1572T
Manufacturer NXP
Description AM receiver
Published Apr 23, 2005
Detailed Description INTEGRATED CIRCUITS DATA SHEET TDA1572T AM receiver Product specification File under Integrated Circuits, IC01 May 1992...
Datasheet PDF File TDA1572T PDF File

TDA1572T
TDA1572T

Overview
INTEGRATED CIRCUITS DATA SHEET TDA1572T AM receiver Product specification File under Integrated Circuits, IC01 May 1992 Philips Semiconductors Product specification AM receiver GENERAL DESCRIPTION The TDA1572T integrated AM receiver circuit performs all the active functions and part of the filtering required of an AM radio receiver.
It is intended for use in mains-fed home receivers and car radios.
The circuit can be used for oscillator frequencies up to 50 MHz and can handle RF signals up to 500 mV.
RF radiation and sensitivity to interference are minimized by an almost symmetrical design.
The controlled-voltage oscillator provides signals with extremely low distortion and high spectral purity over the whole frequency range, even when tuning with variable capacitance diodes.
If required, band switching diodes can easily be applied.
Selectivity is obtained using a block filter before the IF amplifier.
Features TDA1572T • Inputs protected against damage by static discharge • Gain-controlled RF stage • Double balanced mixer • Separately buffered, voltage-controlled and temperature-compensated oscillator, designed for simple coils • Gain-controlled IF stage with wide AGC range • Full-wave, balanced envelope detector • Internal generation of AGC voltage with possibility of second-order filtering • Buffered field strength indicator driver with short-circuit protection • AF preamplifier with possibilities for simple AF filtering • Electronic standby switch • IF output for stereo demodulator and search tuning.
QUICK REFERENCE DATA SYMBOL VP IP ViFR(rms) ViRF(rms) VoIF(rms) PARAMETER Supply voltage range Supply current range RF input voltage (RMS value) for (S + N)/N = 6 dB for THD = 3% IF output voltage (RMS value) AF output voltage (RMS value) VoAF(rms) AGC range Change of Vi for 1 dB ∆Vi change of VoAF Indicator driver (pin 13) Output voltage Vo PACKAGE OUTLINE 20-lead mini-pack; plastic (SO20; SOT163A); SOT163-1; 1996 August 13.
Vi = 500 mV(rms); RL = 2.
7 kΩ 2.
5 2...


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