TDA2030 DESCRIPTION
The TDA2030 is a monolithic integrated circuit in
Pentawatt package, intended for use as a low
frequency class AB amplifier. Typically it provides
14W output power (d = 0.5%) at 14V/4Ω;at ± 14V
the guaranteedoutput poweris 12W on a 4Ω load
and 8Won a 8Ω (DIN45500).
TheTDA2030provideshighoutputcurrentandhas
very lowharmonic and cross-over distortion.
Further the device incorporates an original (and
patented) short circuit protection system compris-
ing an arrangement for automatically limiting the
dissipated power so as to keep the working point
of the outputtransistorswithin their safe operating
area.A conventionalthermal shut-downsystem is
also included.
SHORT CIRCUIT PROTECTION
The TDA2030 has an original circuit which limitsthe
current of the output transistors , the maximum output current is a function of the
collector emitter voltage; hence the output transis-
tors work within their safe operating area .
This functioncan thereforebe consideredas being
peak power limiting rather than simple current lim-
iting.
It reducesthe possibility that the devicegetsdam-
aged during an accidental short circuit from AC
output to ground.
TDA4290-2
Bipolar IC
Tone control IC for the DC voltage control of volume, treble, and bass. The volume characteristic
can be changed from linear to physiological.
For mono application we recommend the TDA 4290-2, while the TDA 4290-2 S is especially
suitable for stereo application.
Features
Few external components
High signal—to—noise ratio
Low total harmonic distortion
Complies with the IEC 268-3 standards
Maximum ratings
Supply voltage V5 18 V
Control inputs V5, V5, V14 0 to vs V
Input signal V8,,“ 3 V
Load current I; 10 mA
Junction temperature 7; 150 “C
Storage temperature range Ts,g -40 to 125 “C
Thermal resistance (sysIem—air) Rm SA 90 K/W
Operating range
Supply voltage vs 10.5 to 18 V
Volume control V5 0 to 0.51 x V2 V
Frequency (—1 dB) fi 20 to 20,000 Hz
Ambienttemperature TA 0 to 70 ‘ “C
Current consumption Is 35 50 I mA
Relerence voltage V; 45 485 5.2 ‘ V
Input resistance Rig 2.9 3.9 kfl
Output resistance Ru 3/5 200 Q
Changeover current [4 3.5 mA
Input current for set inputs ‘I5/em 4 20 pix
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