TDA7021T - NXP

TDA7021T FM radio circuit

TDA7021T 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. It 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 o.

Features

• RF input stage
• Mixer
• Local oscillator
• IF amplifier/limiter
• Frequency detector
• Mute circuit
• MTS compatible QUICK REFERENCE DATA PARAMETER Supply voltage (pin 4) Supply current RF input frequency Sensitivity (e.m.f.) for −3 dB limiting Signal handling (e.m.f.) AF output voltage source impedance = 75 Ω; mute disabled source impedance = 75 Ω EMF EMF Vo − − − 4 200 90 − − − µV mV mV VP = 3 V CONDITIONS SYMBOL VP = V4-3 l4 frf − 1,5 MIN. 1,8 − 6,3 − TYP. MAX. 6,0 − 110 UNIT V mA MHz
• Loop amplifier
• Internal reference circuit
• LF amplifier for − mono earphone amplifier or − MUX filt.