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TDA2007A

TDA2007A

6 + 6W STEREO AMPLIFIER

  • HIGH OUTPUT POWER

  • HIGH CURRENT CAPABILITY

  • AC SHORT CIRCUIT PROTECTION

  • THERMAL OVERLOADPROTECTION

DESCRIPTION

The TDA2007A is a class AB dualAudio power amplifier assembled in single in line 9 pins package, specially designed for stereo application in music centers TV receivers and portable radios.

STEREO TEST CIRCUIT

PIN CONNECTION (top view)

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit
VS Supply Voltage 28 V
IO Output Peak Current (repetitive f і 20Hz) 3 A
IO Output Peak Current (non repetitive t = 100ms) 3.5 A
Ptot Power Dissipation at Tcase = 70°C 10 W
Tstg, Tj Storage and Junction Temperature –40 to 150 °C

ELECTRICALCHARACTERISTICS (referto thestereoapplicationcircuit,Tamb = 25°C, VS = 18V, GV=36dB,unlessotherwisespecified)

Symbol Parameter Test Condition Min. Typ. Max. Unit
VS Supply Voltage   8   26 V
VO Quiescent Output Voltage     8.5   V
Id Total Quiescent Drain Curent     50 90 mA
PO Output Power f = 100Hz to 6KHz        
  (each channel) d = 0.5%        
    VS = 18V RL = 4W 5.5 6   W
    VS = 22V RL = 8W 5.5 6   W
d Distortion f = 1KHz, VS = 18V, RL = 4W   0.1   %
  (each channel) PO = 100mW to 3W        
    f = 1KHz, VS = 22V, RL = 8W   0.05   %
    PO = 100mW to 3W        
CT Cross Talk (ooo) RL = Ґ, Rg = 10KW        
    f = 1KHz 50 60   dB
    f = 10KHz 40 50   dB
Vi Input Saturation Voltage (rms)   300     mV
Ri Input Resistance f = 1KHz 70 200   KW
fL Low Frequency Roll Off (–3dB) RL = 4W, C10 = C11 = 2200mF   40   Hz
fH Low Frequency Roll Off (–3dB)     80   KHz
GV Voltage Gain (closed loop) f = 1KHz 35.5 36 36.5 dB
DGV Closed Loop Gain Matching     0.5   dB
eN Total Input Noise Voltage Rg = 10kW (o)   1.5   mV
    Rg = 10kW (oo)   2.5 8 mV
SVR Supply Voltage Rejection Rg = 10KW   55   dB
  (each channel) fripple = 100Hz, Vripple = 0.5V        
Tj Thermal Shut-down Junction     145   °C
  Temperature          

Figure 1 : Stereo Test Circuit (GV = 36 dB).

Figure 2 : P.C. Board and Components layout of the Circuit of Fig.1 (1 : 1 scale).

APPLICATION SUGGESTION

The recommendedvalues of the components are those shown on applicationcircuit of fig.1.Different values can be used ; the following table can help the designer.

Component Recommended value Purpose Larger Than Smaller Than
R1, R3 1.3KW Close Loop Gain Increase of Gain Decrease of Gain
    Setting (*)    
R2 and R4 18W   Decrease of Gain Increase of gain
R5 and R6 1W Frequency stability Danger of  
      Oscillation at High  
      Frequency with  
      Inductive Load  
C1 and C2 2.2mF Input DC Decoupling High Turn-on Delay High Turn-on Pop
        Higher Low
        Frequency
        Cutoff. Increase of
        Noise
C3 22mF Ripple Rejection Better SVR Increase Degradation of SVR
      of the Switch-on  
      Time  
C6 and C7 220mF Feedback Input DC    
    Decoupling    
C8 and C9 0.1mF Frequency Stability   Danger of Oscillation

Figure 3 : 12 W Bridge Amplifier (d = 0.5%, GV = 40 dB).


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