Product overview
Description
The STA540 is a 4-channel, class-AB audio amplifier designed for high quality sound applications.
The amplifiers have single-ended outputs with integrated short-circuit protection, thermal protection and diagnostic functions.
The chip is housed in the 15-pin Multiwatt ECOPACK®Pb-free package which is RoHS (2002/95/EC) compliant.
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All features
- High output power capability
- 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 24W into 4Ω at 14.4 V, 1 kHz, 10% THD
- 2x 15 W into 8 Ω at 16 V, 1 kHz, 10% THD
- 4x 13 W into 2 Ω at 15 V, 1 kHz, 10% THD
- 4x 11 W into 4 Ω at 18 V, 1 kHz, 10% THD
- 4x 7 W into 4 Ω at 14.4 V, 1 kHz, 10% THD
- Minimum external components count:
- no bootstrap capacitors
- no Boucherot cells
- internally fixed gain 20 dB
- Standby function (CMOS compatible)
- 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
- Protection
- Output AC/DC short circuit
- Soft short-circuit check at turn-on
- Thermal cutoff/limiter to prevent chip from overheating
- High inductive loads
- ESD
- High output power capability
Circuit Diagram
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STMicroelectronics - STA540
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STA540 | Active | MW 15L | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STA540 | | | distributors No availability of distributors reported, please contact our sales office |
STA540 Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors