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TDA1905-TDA1905.
5W AUDIO AMPLIFIER WITH MUTING
TDA19055W AUDIO AMPLIFIER WITH MUTING
DESCRIPTIONThe TDA1905 is a monolithic integrated circuit in
POWERDIP package, intended for use as low
frequency power amplifier in a wide range of appli-
cations in radio and TV sets: muting facility protection against chip over temperature very low noise high supply voltage rejection low "switch-on" noise voltage range 4V to 30V
The TDA 1905 is assembled in a new plastic pack-
age, the POWERDIP, that offers the same assembly
ease, space and cost saving of a normal dual in-line
package but with a power dissipation of up to 6W and
a thermal resistance of 15°C/W (junction to pins).
March 1993
ABSOLUTE MAXIMUM RATINGS
APPLICATION CIRCUIT1/14
THERMAL DATA
PIN CONNECTION (top view)
SCHEMATIC DIAGRAM
TDA1905
TEST CIRCUITS:WITHOUT MUTING
WITH MUTING FUNCTION
TDA1905
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Tamb = 25 °C, Rth (heatsink) = 20 °C/W,unless otherwisw specified)
(*) With an external resistor of 100Ω between pin 3 and +Vs.
TDA1905
MUTING FUNCTION
ELECTRICAL CHARACTERISTICS (continued)
Note:(°) Weighting filter = curve A.
(° °) Filter with noise bandwidth: 22 Hz to 22 KHz.
(*) See fig. 30 and fig. 31
TDA1905
Figure 1. Quiescent output
voltage vs. supply voltage
Figure 2. Quiescent drain
current vs. supply voltage
Figure 3. Output power vs.
supply voltage
Figure 4. Distortion vs.
output power (RL = 16Ω)
Figure 5. Distortion vs.
output power (RL = 8Ω)
Figure 6. Distortion vs.
output power (RL = 4Ω)
Figure 7. Distortion vs.
frequency (RL = 16Ω)
Figure 8. Distortion vs.
frequency (RL = 8Ω)
Figure 9. Distortion vs.
frequency (RL = 4Ω)
TDA1905
Figure 10. Open loop fre-
quency response
Figure 11. Output power vs.
input voltage
Figure 12. Value of capaci-
tor Cx vs. bandwidth (BW)
and gain (Gv)
Figure 13. Supply voltage re-
jection vs. voltage gain (ref.
to the Muting circuit)
Figure 14. Supply voltage re-
ection vs. source resistance
Figure 15. Max power dissi-
pation vs. supply voltage
(sine wave operation)
Figure 16. Power dissipa-
tion and efficiency vs. output
power
Figure 17. Power dissipa-
tion and efficiency vs. output
power
Figure 18. Power dissipa-
tion and efficiency vs. output
power
TDA1905
