एम्प्लीफायर ICs
उत्पाद (4)
STA350BW - 2.1-Channel Digital Audio System | STMicroelectronics
The STMicroelectronics STA350BW is a 2.1-channel high-efficiency digital audio system with an integrated digital audio processor, digital amplifier controller, FFX power output stage, and four power outputs in a PowerSSO-36 EPD package. Its documented operating supply range reaches 26 V, with a 30 V absolute maximum rating. The system can deliver 1 x 75 W into 4 Ω with the supply voltage set to 25 V under the manufacturer’s stated conditions. A digital audio system combines signal processing, amplifier control, and power-stage conversion into one integrated device. Within the broader semiconductor hierarchy, the STA350BW belongs to the power-management IC class and specifically serves as a digital Class-D audio amplifier and Sound Terminal. This integration reduces the number of separate blocks required for a compact audio output stage while retaining programmable audio processing. The STA350Bx family provides up to 8 programmable biquads per channel for equalization. Four power outputs support multi-channel and 2.1-channel system configurations. The supplied test condition of VCC = 24 V, f = 1 kHz, fsw = 384 kHz, ambient temperature of 25°C, and RL = 8 Ω provides a defined basis for comparing datasheet specifications; results obtained under different conditions should not be treated as directly equivalent. The device integrates digital audio processing, digital amplifier control, and the FFX output architecture into a single high-power sound-terminal solution. Its four-output architecture provides flexibility for stereo, multi-channel, or subwoofer arrangements, while the digital equalization capability permits channel-specific tonal shaping. The package includes an exposed pad that must be handled according to the manufacturer’s thermal and layout guidance. Typical applications include compact active speakers, multimedia speaker systems, home-theater sound terminals, powered subwoofers, and consumer audio products requiring multiple amplified outputs. In these systems, the integrated processing and output stage can simplify the signal chain compared with a design that uses separate DSP, amplifier-control, and power-amplifier blocks. The 75 W output capability is particularly relevant to compact high-power speaker enclosures. The principal design consideration is thermal management. The exposed pad is integral to heat dissipation and must be connected to a suitable copper area according to the manufacturer datasheet. Designers should also maintain the required input, output, filtering, and decoupling layout, preserve the specified switching conditions, and account for the difference between the 26 V operating range and 30 V absolute maximum rating. This product page consolidates the verified manufacturer specifications, distributor availability information, package details, and engineering guidance for the STA350BW. It also distinguishes directly documented characteristics from parameters that require confirmation from the complete datasheet, helping engineers evaluate thermal design and replacement decisions without inferring unverified compatibility.
STA508 - 40V 4.5A Quad Power Half Bridge | STMicroelectronics
The STMicroelectronics STA508 is a 40 V, 4.5 A monolithic quad power half-bridge stage implemented in Multipower BCD technology and packaged in PowerSO-36. It provides four configurable half-bridge outputs that can operate as two full bridges, one full bridge with doubled output-current capability when CONFIG is tied to VDD, or individual half bridges in Binary mode with reduced current capability. A power half bridge is a switching amplifier stage containing two MOSFETs arranged between the supply and ground rails, with one output node at their midpoint. A quad half-bridge IC consolidates four such stages so Class D audio controllers can drive stereo, multi-channel, or bridged speaker systems efficiently. The STA508 is therefore positioned within the hierarchy of Class D audio amplifier IC, power half-bridge, audio output stage, and power management semiconductor. Key verified features include a 40 V maximum power-supply rating, 4.5 A output-current capability, four integrated power half bridges, configurable bridge topology, and Multipower BCD process technology. Configuration flexibility allows the same device organization to support dual-bridge, single-bridge, and Binary half-bridge operation, reducing board-area requirements when a product family needs multiple channel counts. The device is intended to work with an external Class D audio controller rather than directly accept analog audio. The controller generates gate-drive signals, while STA508 supplies the high-current switching path to the speaker outputs. Its BCD construction combines analog control capability with efficient power-device integration, making it suitable for compact, high-power audio systems where board area and channel flexibility matter. Typical applications include stereo Class D amplifiers, multi-channel home audio, active speakers, powered subwoofers, and compact consumer audio products. A 24 V system is specifically shown in the verified web material for an STA508 monoblock amplifier, illustrating use of the device's 40 V supply capability. Thermal and layout design are critical because the PowerSO-36 package and external heatsink must dissipate the power-stage loss. The power and ground pins, output nodes, controller interface, and decoupling network should follow the manufacturer datasheet layout exactly. Keep high-current loops compact and provide adequate copper and heatsinking; otherwise output-current capability can be limited by junction temperature before the electrical rating is reached.
STA540SAN - 4x10W Class-AB Audio Amplifier | STMicroelectronics
The STMicroelectronics STA540SAN is a 4 x 10 W dual/quad power amplifier for high-quality sound applications. The device contains four single-ended, class-AB audio amplifiers in a Clipwatt15 package and can operate as a stereo pair or as four independent amplifier channels. Its headline specifications are four integrated amplifier channels, 10 W per channel, and an 8 V to 22 V supply range. Each amplifier includes integrated short-circuit protection, thermal protection, and diagnostic functions. Two amplifiers can be paired for applications requiring higher power output. The STA540SAN belongs to the power-amplifier IC hierarchy, where an audio amplifier drives loudspeakers or other low-impedance loads while providing voltage gain and output-current capability. Class-AB operation provides a practical balance between conduction efficiency and low crossover distortion for conventional consumer and industrial audio systems. The single-ended amplifier architecture is suitable for compact designs where a bridge-tied configuration, external bootstrap capacitors, or Boucherot cells are not required. Key features include four single-ended outputs, a 2-channel stereo or 4-channel quad operating mode, integrated short-circuit and thermal protection, diagnostic functions, and a reduced external-component count. The manufacturer datasheet states that no bootstrap capacitors or Boucherot cells are required. The Clipwatt15 package is intended for through-hole or board-level audio power designs and provides a practical thermal and assembly solution for amplifiers operating near the device's rated output capability. The STA540SAN is suitable for stereo receivers, compact audio systems, television or monitor amplification, multimedia speakers, industrial audio equipment, and other applications using 4-ohm or 8-ohm speakers. When selecting the supply voltage, ensure that the amplifier has sufficient headroom for the chosen load and that the PCB provides adequate copper area and thermal dissipation. The standby control and diagnostic functions should be checked against the system-level requirements before production design. This product page combines the verified manufacturer and distributor information with practical selection guidance, pricing-status notes, and conservative drop-in replacement analysis. It identifies where a same-package replacement is supported by the available cross-reference data and where pinout and electrical verification remains essential.
STA575 - 100W Stereo BASH Power Amplifier | STMicroelectronics
The STMicroelectronics STA575 is a 100+100 W stereo BASH power amplifier designed for use with the STABP01 digital processor. It delivers 80+80 W into 4 or 8 ohm loads at 0.5% total harmonic distortion and is available in the 27-Flexiwatt vertical power package. The device uses a mono-chip bridge stereo amplifier architecture with high-dynamic preamplifier input stages, external programmable feedback, compressors, and AC-coupled inputs. The STA575 is an integrated audio power module within the broader amplifier IC, audio amplifier, and Class AB amplifier hierarchy. Class AB amplifiers combine transistor conduction for improved linearity with lower distortion than many switching audio power stages. In the BASH architecture, the STABP01 supplies digital control and signal-processing functions while the STA575 provides the high-power analog output stage and speaker drive capability. Key features include 100+100 W output power into 4 or 8 ohms at 10% THD, 80+80 W output power at 0.5% THD, stereo operation, high-dynamic preamplifier inputs, external programmable feedback, integrated compressor functions, and AC-coupled input coupling. The 27-pin Flexiwatt vertical package is intended for audio power amplifier designs requiring substantial output current and thermal management. The device is intended for stereo speaker systems, compact hi-fi equipment, multimedia enclosures, powered speakers, and other Class AB audio products. The manufacturer datasheet identifies the BASH architecture and the electrical operating limits that determine speaker impedance, supply voltage, thermal design, and distortion performance. Designers should use the complete datasheet for pin assignment, recommended application circuitry, protection requirements, and maximum ratings. Because this is a high-power analog module, PCB layout and heat sinking are as important as signal selection. Keep high-current speaker paths short and wide, use the recommended input and feedback networks, decouple the supply rails close to the device, and validate thermal performance at the intended output power. A nominal 100 W rating does not eliminate the need for an adequate copper area, thermal interface, enclosure airflow, or speaker-load verification. This page combines the verified STMicroelectronics and distributor descriptions with practical engineering guidance. It is intended to help engineers identify the correct function, package, power class, datasheet, and design constraints while avoiding unsupported substitute claims or fabricated electrical details.