器件名称: TDA1072A
功能描述: AM Receiver Circuit
文件大小: 253.02KB 共8页
简 介:D Controlled RF preamplifier D Multiplicative balanced mixer D Separate oscillator with amplitude control D IF amplifier with gain control Case: 16 pin dual inline plastic
D Balanced full–wave detector D Audio preamplifier D Internal AGC voltage D Amplifier for field–strength indication D Electronic stand–by on/off switch
Figure 1 Block diagram and application circuit
Preliminary Information
1
Supply voltage Voltage on Pin 2 RF inputs Voltages Reference point 15
Pin 13
VS V2 "Vi 14/15 Vi –Vi Vi –Vi "Ii Tamb Tstg
20 0 to 20
V V
Pin 14 Pin 14 Pin 14 Pin 15 Pin 15 Pin 14, 15
12 Vs 0.6 Vi 0.6 200 – 30 to + 80 – 55 to + 150
V V V V V mA °C °C
RF inputs Currents Ambient temperature range Storage temperature range
Electrical Characteristics
VS = 8.5 V, reference point pin 16, fIRF = 1MHz, RG = 50 W, fmod = 0.4 kHz, m = 30%, fIF = 460 kHz, Tamb = + 25 °C, unless otherwise specified Parameters Supply voltage range Supply current, without load, IL = 0 (Pin 11) RF preamplifier and mixer DC input voltages Input impedances Test Conditions / Pin Pin 13 Pin 13 Symbol VS IS Min 7.5 Type 18 23 Max 30 Unit V mA
Pin 14, 15 ViRF < 300 V, ViRF > 10 mV, Pin 14,15 Pin 14, 15
Vi Ri Ci Ri Ci Ro Co DSM 500
VS/2 5.5 25 8.0 22 6.0 6.5 5.0 1.2 30 2.5 0.6 0.5 60 200
V kW pF kW pF kW pF mA/V Vpp mA dB Vpp MHz kW
Output impedance Maximum conversion conductance Maximum IF output voltage Output current Preamplifier control range Max. RF input voltage Oscillator Frequency range Oscillator c……
