STA540 STMicroelectronics, STA540 Datasheet - Page 8

• Manufacturer Part Number: STA540
• Description: IC AMP AUD DUAL/QUAD MULTIWATT15
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of STA540

• Output Type: 2-Channel (Stereo) or 4-Channel (Quad)
• Max Output Power X Channels @ Load: 38W x 2 @ 4 Ohm; 16W x 4 @ 4 Ohm
• Voltage - Supply: 8 V ~ 22 V
• Features: Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Package / Case: Multiwatt-15 (Vertical, Bent and Staggered Leads)
• Amplifier Class: AB
• No. Of Channels: 4
• Output Power: 24W
• Supply Voltage Range: 8V To 22V
• Thd + N: 0.02% @ 4W, 4ohm, VS=14.4V
• Load Impedance: 8ohm
• Operating Temperature Range: -40°C To +150°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8880-5

Standard application circuits
3
8/23
Standard application circuits
Figure 3.
Figure 4.
Figure 5.
ST_BY
IN_R
IN_L
ST_BY
IN_3
IN_4
IN_1
IN_2
The best audio performance is obtained with the configuration where each speaker
has its own DC blocking capacitor. However, if the application allows a little
degradation of the spatial image it is possible to connect a couple of speakers with
only one low-value DC blocking capacitor.
470 nF
10 kΩ
470 nF
Quadraphonic
Alternative single-ended speaker connection
Dual bridge
47 µF
10 µF
220 nF
220 nF
220 nF
10 kΩ
220 nF
47 µF
10 µF
4
5
12
11
6
*
7
8
1
2
1
2
4
5
12
11
6
13
9
7
8
STA540
STA540
13
9
3
10
15
14
100 nF
1
2
3
10
15
14
100 nF
1
2
470µF
2200 µF
2200 µF
2200 µF
2200 µF
15
14
18
19
1000 µF
OUT_R
OUT_L
1000 µF
V
OUT_4
OUT_1
OUT_2
OUT_3
S
S
2x 38 W into 4 Ω, at 18 V, 1 kHz, 10% THD
2x 34 W into 8 Ω, at 22 V, 1 kHz, 10% THD
2x 24 W into 4 Ω, at 14.4 V, 1 kHz, 10% THD
2x 15 W into 8 Ω, at 16 V, 1 kHz, 10% THD
V
S
uggested applications:
470µF
Suggested applications:
4x 13 W into 2 Ω, at 15 V
4x 11 W into 4 Ω, at 18 V
4x 9 W into 2 Ω, at 12 V
4x 8 W into 4 Ω, at 16 V
4x 5 W into 4 Ω, at 12 V
STA540