TDA2054M

      The TDA2054M is a monolithic intergrated circuit in a 16-lead dual in-line plastic package.The functions include low noise preamplifier,automatic level control system (ALC) and high gain equalization amplifier.It is designed as preamplifier in tape and cassette recorders and players,dictaphones,compressor and expander in telephonic equipments,Hi-Fi preamplifiers and in wire disfusion receivers;for stereo applications the ALC matching is better than 3 dB.
      Here you can get some information about the TDA2054M features.First is excellent versatility in use (VS from 4 to 20 V).The second one is high open loop gain.Then is low distortion.Next is low noise.The fifth is large automatic lever control range.The last one is setero matching better than 3 dB (matched pair).
      What comes next is about the absolute maximum ratings.The V_S (supply voltage) is 20 V.The P_tot (total power dissipation) is 500 mW.The Tj,Tstg (storage and junctionn temperature) is from -40 to 150.Then is about the thermal data.The maximum R_{th j-amb} (thermal resistance junction-ambient) is 200/W.
      The following is about the electrical characteristics about TDA2054M (Tamb=25).The minimum V_S (supply voltage) is 4 V and the maximum is 20 V.The typical I_d (quiescent drain current) is 10 mA at V_S=9 V,S1=S2=S3=at B.The minimum h_FE (DC current gain (Q1,Q2,Q3)) is 300 and the maximum is 500 at I_C=0.1 mA,V_CE=5 V.The typical G_V (open loop voltage gain (for equalization amplifier)) is 60 dB at V_S=9 V,f=1 kHz.The typical V_O (output voltage with ALC) is 0.6 V at V_S=9 V,V_I=100 mV,f=1 kHz,S1=S2=S3 at A.The minimum R₁ (Q3 emitter resistance) is 105,the typical is 150 and the maximum is 195.The typical I_N (input noise current (Q1,Q2,Q3)) is 0.5 pA/Hz at IC=0.1 mA,V_CE=5 V,f=1 KHz.