STA540 STMicroelectronics, STA540 Datasheet - Page 2

IC AMP AUD DUAL/QUAD MULTIWATT15

STA540

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

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

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Contents
Contents
1
2
3
4
5
6
2/23
Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1
1.2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
2.2
2.3
Standard application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermal information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1
Practical information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.1
6.2
6.3
6.4
6.5
6.6
6.7
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Heatsink specification examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1.1
5.1.2
5.1.3
Highly flexible amplifier configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Easy single-ended to bridge transition . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Internally fixed gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Silent turn on/off and muting/standby function . . . . . . . . . . . . . . . . . . . . . 15
Driving circuit for standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Output stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.6.1
6.6.2
Built–in protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.7.1
6.7.2
6.7.3
6.7.4
R
R
Calculations using music power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Rail-to-rail output voltage swing without bootstrap capacitors . . . . . . . . 16
Absolute stability without external compensation . . . . . . . . . . . . . . . . . 16
Diagnostic facilities (pin 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Clipping detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
th_HS
th_HS
calculation for 4 single-ended channels . . . . . . . . . . . . . . . . . . . 13
calculation for 2 single-ended channels plus 1 BTL channel . . . 13
STA540

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