TDA2030AV STMicroelectronics, TDA2030AV Datasheet - Page 9

• Manufacturer Part Number: TDA2030AV
• Description: IC AMP AUDIO 18W MONO PENTAWATT5
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA2030AV

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 18W x 1 @ 4 Ohm
• Voltage - Supply: 12 V ~ 44 V, ±6 V ~ 22 V
• Features: Short-Circuit and Thermal Protection
• Mounting Type: Through Hole
• Package / Case: Pentawatt-5 (Vertical, Bent and Staggered Leads)
• Product: Class-AB
• Output Power: 18 W
• Available Set Gain: 80 dB
• Thd Plus Noise: 0.5 %
• Operating Supply Voltage: 22 V
• Supply Current: 80 mA
• Maximum Power Dissipation: 20000 mW
• Maximum Operating Temperature: + 150 C
• Mounting Style: Through Hole
• Audio Load Resistance: 8 Ohms
• Dual Supply Voltage: +/- 9 V, +/- 12 V, +/- 15 V, +/- 18 V
• Input Bias Current (max): 2 uA
• Input Offset Voltage: 15 V
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Single
• Supply Type: Dual
• Amplifier Type: MIC
• Bandwidth: 100 MHz
• Current, Input Bias: 0.2 μA
• Current, Input Offset: ±20 nA
• Current, Output: 3.5 A
• Current, Supply: 50 mA
• Harmonic Distortion: 0.08 %
• Impedance, Thermal: 3 °C/W
• Open Loop Gain: 80
• Package Type: Pentawatt
• Power Dissipation: 20 W
• Resistance, Input: 5 Megohms
• Slew Rate: 8
• Voltage, Input: ±22 V
• Voltage, Input Offset: ±2 mV
• Voltage, Noise: 3 μV
• Voltage, Supply: ±6 to ±22 V
• Amplifier Class: AB
• No. Of Channels: 1
• Supply Voltage Range: ± 6V To ± 22V
• Load Impedance: 4ohm
• Operating Temperature Range: -50°C To +150°C
• Amplifier Case Style: Pentawatt V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2165-5

Figure 18 : Power Distribution versus Frequency
Both active and passive filters can be used for
crossovers but today active filters cost significantly
less than a good passive filter using air cored
inductors and non-electrolytic capacitors. In addi-
tion, active filters do not suffer from the typical
defects of passive filters:
- power less
- increased impedance seen by the loudspeaker
- difficulty of precise design due to variable loud-
Obviously, active crossovers can only be used if a
power amplifier is provided for each drive unit. This
makes it particularly interesting and economically
sound to use monolithic power amplifiers.
In some applications, complex filters are not really
necessary and simple RC low-pass and high-pass
networks (6dB/octave) can be recommended.
The result obtained are excellent because this is
the best type of audio filter and the only one free
from phase and transient distortion.
The rather poor out of band attenuation of single
RC filters means that the loudspeaker must operate
linearly well beyond the crossover frequency to
avoid distortion.
(lower damping)
speaker impedance.
A more effective solution, named "Active Power
Filter" by SGS-THOMSON is shown in Figure 19.
Figure 19 : Active Power Filter
The proposed circuit can realize combined power
amplifiers and 12dB/octave or 18dB/octave high-
pass or low-pass filters.
In practice, at the input pins of the amplifier two
equal and in-phase voltages are available, as re-
quired for the active filter operation.
The impedance at the pin (-) is of the order of 100 ,
while that of the pin (+) is very high, which is also
what was wanted.
The component values calculated for f
using a Bessek 3rd order Sallen and Key structure
are :
Using this type of crossover filter, a complete 3-way
60W active loudspeaker system is shown in Fig-
ure 20.
It employs 2nd order Buttherworth filters with the
crossover frequencies equal to 300Hz and 3kHz.
The midrange section consists of two filters, a high
pass circuit followed by a low pass network. With
V
is 25W at d = 0.06% (30W at d = 0.5%).
The power delivered to the midrange and the
tweeter can be optimized in the design phase
taking in account the loudspeaker efficiency and
impedance (R
It is quite common that midrange and tweeter
speakers have an efficiency 3dB higher than-
woofers.
S
= 36V the output power delivered to the woofer
C
1
= C
22nF
2
= C
L
3
= 4 to 8 ).
8.2k
R
1
5.6k
R
2
TDA2030A
c
= 900Hz
33k
R
3
9/15