SparkFun
Dual/Quad Power Amplifier - STA540
The STA540 from STMicro is a 4-channel, class AB audio amplifier designed for high quality sound applications. The four independent channels makes this am...
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The STA540 from STMicro is a 4-channel, class AB audio amplifier designed for high quality sound applications. The four independent channels makes this amplifier a great choice for a number of projects, with needs ranging from four speakers stereo (F/R) to two-speaker bridge solutions. The chip accepts a voltage supply ranging from 8 to 22VDC and has very high output power capability.
This chip comes in a staggered-lead Multiwatt-15 package. While our breakout board for the L298N isn’t designed for it specifically, it will breakout out all pins of the STA540 to a more standard single row of 0.1" pitch headers. Also, keep an eye out for some upcoming amplifier products based on this chip!
It works great with the 6400BG Heatsink!
Features:
- High output power capability
- Standby function (CMOS compatible)
- Minimum external components count:
- no bootstrap capacitors
- no Boucherot cells
- internally fixed gain 20 dB
- No audible pop during standby operations
- Diagnostic facilities:
- clip detector
- output to GND short-circuit detector
- output to VS short-circuit detector
- soft short-circuit check at turn-on
- thermal shutdown warning
- Output AC/DC short circuit protection
- Soft short-circuit check at turn-on
- Thermal cutoff/limiter to prevent chip from overheating
Documents:
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- Short circuit protection
- A safety feature that helps protect the device if its output or wiring is accidentally connected in a way that causes excessive current flow. This matters in automation wiring because mistakes or damaged cables can otherwise destroy the sensor or power supply.
Find this product in
Audio & Video
STA540 Datasheet
Datasheet · 371.3 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 396.9 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
