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TDA7421N Folha de dados(PDF) 3 Page - STMicroelectronics |
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3 / 38 page 3/38 TDA7421N ABSOLUTE MAXIMUM RATINGS THERMAL DATA PIN DESCRIPTION Symbol Parameter Value Unit Tamb Operating Temperature Range -40 to 85 °C Tstg Storage Temperature Range -55 to 150 °C VCC Analog Supply Voltages (PLL, RF, IF1, IF2, OSC) 10.2 V VDD Digital Supply Voltage 5.5 V Symbol Parameter Typ. Value Unit Rth j-amb, fa Thermal Resistance Junction-Ambient, Free Air 68 °C/W Rth j-amb, sol Thermal Resistance Junction-Ambient, Soldered 55 °C/W N. Name Function 1 AM MIX1 IN - AM 1st mixer negative input (differential -) 2 AM MIX1 IN + AM 1st mixer positive input (differential +) 3 FM MIX1 IN - FM mixer negative input (differential -) 4 FM MIX1 IN + FM mixer positive input (differential +) 5 FM RF AGC IN RF AGC input 6 FM AGC OUT FM AGC output voltage 7 RF GND RF ground 8 VCO B Local oscillator input to the transistor base 9 VCO E Local oscillator input to the transistor emitter 10 OSC GND Oscillator ground 11 XTAL D Crystal oscillator MOS amplifier output 12 XTAL G Crystal oscillator MOS amplifier input 13 OSC VCC Oscillator positive supply 14 FM ANT ADJ Tuning varicap voltage for antenna FM filter 15 FM RF ADJ Tuning varicap voltage for RF FM filter 16 PLL VCC PLL positive supply 17 LP OUT Op Amp output to PLL loop filters 18 LP IN1 FM loop filter connection to op-amp inverting input 19 LP IN2 AM loop filter connection to op-amp inverting input |
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