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TDA7421 数据表(PDF) 3 Page - STMicroelectronics |
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TDA7421 数据表(HTML) 3 Page - STMicroelectronics |
3 / 38 page THERMAL DATA Symbol Parameter Value Unit Rth j-amb Thermal resistance Junction-Ambient typ. 68 °C/W PIN DESCRIPTION N. Name Function 1 AM MIX1 IN - Input "-" to the AM 1st mixer (differential input) 2 AM MIX1 IN + Input "+" to the AM 1st mixer (differential input) 3 FM MIX IN - Input "-" to the FM mixer (differential input) 4 FM MIX IN + Input "+" to the FM mixer (differential input) 5 FM RF AGC IN Input to the RF AGC circuit 6 FM AGC OUT Voltage output to the FM AGC 7 RF GND RF circuits ground 8 VCO B Local oscillator input to the transistor base (two-pin oscillator) 9 VCO E Local oscillator input to the transistor emitter (two-pin oscillator) 10 OSC GND Oscillator ground 11 XTAL D Crystal oscillator input to MOS drain (two-pin oscillator) 12 XTAL G Crystal oscillator input to MOS gate (two-pin oscillator) 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 PLL "N. 1" loop filter connection to Op Amp inverting input 19 LP IN2 PLL "N. 2" loop filter connection to Op Amp inverting input 20 LP IN3 PLL "N. 3" loop filter connection to Op Amp inverting input 21 PLL VREF Voltage reference to Op Amp noninverting input 22 PLL GND PLL ground 23 SLEEP I 2C bus disconnect signal 24 SDA I 2C bus data 25 SCL I 2C bus clock ABSOLUTE MAXIMUM RATINGS 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 TDA7421 3/38 |
类似零件编号 - TDA7421 |
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类似说明 - TDA7421 |
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