STA335MLJ13TR - 2-Channel Stereo Class D Audio Amplifier | STMicroelectronics
MPN: STA335MLJ13TR ✓ সক্রিয়STA335MLJ13TR সারাংশ
An audio amplifier IC is a discrete-semiconductor-free integrated block that reproduces an analog or digital audio signal at a usable output level. Class D refers to the output stage topology: the signal is switched between the supply rails and filtered into a linear output, which is why class D audio amplifiers achieve high conversion efficiency and low heat dissipation compared with class A or class B stages. When such a device also embeds digital audio conditioning, it belongs to the family of digital audio amplifiers or Sound Terminal devices, where decoding, volume control, bass management and power-stage drive are consolidated on one die.
Key characteristics of this device include its two-channel stereo configuration, its integrated digital audio conditioning and interface capability, and its class D output stage. Because the digital processing is integrated, the host processor no longer has to perform bit-stream decoding or channel routing in software, which reduces both firmware load and system-level EMI risk. The package choice, PowerSSO-36 EPD, is a thermally enhanced surface-mount outline with an exposed thermal pad area that conducts heat away from the die into the PCB copper.
Architecturally, the part combines a digital audio input path, embedded Sound Terminal processing, and two class D power output stages in a single monolithic device. This integration is the main technical differentiator versus discrete amplifier approaches: fewer external components mean a smaller bill of materials, a smaller PCB footprint, and fewer assembly joints to inspect. The trade-off is that the device is application-specific in its digital interface, so the host source and hardware design must match the ST reference configuration rather than being freely retargeted to any codec.
Typical applications are compact stereo audio products such as sound bars, smart speakers, Bluetooth speaker systems, compact TV or monitor audio, and portable or panel-mount stereo products where a digital audio source is already available in the system.
Design consideration: use the ST reference layout and the pin-description table in the manufacturer datasheet when assigning PCB tracks, and treat the exposed pad as a thermal and electrical connection, not just a heat spreader.
This page consolidates the manufacturer part identity, distributor availability, drop-in alternatives, package details and practical design notes into a single engineering reference that goes beyond the raw catalogue entry.
এর জন্য ড্রপ-ইন বিকল্প STA335MLJ13TR — একই package, pin-to-pin compatible। ভিন্ন package-এর যেসব পার্টে PCB rework প্রয়োজন সেগুলো বাদ দেওয়া হয়েছে।
STA335ML
✅ ড্রপ-ইন ⚠️ স্পেক যাচাইকৃত নয়📋 রেফারেন্স বিকল্প (ক্যাটালগে নেই)
STA335M
✅ ড্রপ-ইন ⚠️ স্পেক যাচাইকৃত নয়📋 রেফারেন্স বিকল্প (ক্যাটালগে নেই)
STA335MLJ13TR সর্বোচ্চ রেটিং ও বৈদ্যুতিক বৈশিষ্ট্য
| Amplifier Type | 2-Channel (Stereo) Class D PowerSSO-36 EPD |
| Device Class | Digital audio amplifier / Sound Terminal |
| Number of Channels | 2 |
| আউটপুট কনফিগারেশন | Stereo |
| প্যাকেজ | PowerSSO-36 EPD |
| Number of Terminals | 36 |
| Terminal Form | Gull wing |
| Package Shape | Rectangular |
| Package Code | HSSOP |
| মাউন্টিং টাইপ | Surface Mount |
| Circuit Category | Consumer circuit |
| Temperature Grade | Other |
| RoHS স্ট্যাটাস | ROHS3 Compliant |
STA335MLJ13TR hssop পিন কনফিগারেশন গাইড
STA335MLJ13TR (hssop প্যাকেজ)-এর পিন কনফিগারেশন। এই অ্যানালগ কম্পোনেন্টে ইনপুট, আউটপুট ও পাওয়ার সাপ্লাই পিন রয়েছে। অফসেট নাল, কম্পেনসেশন ও এনেবল পিন কনফিগারেশনের জন্য প্রস্তুতকারকের ডেটাশিট দেখুন। সিগন্যাল কন্ডিশনিং ও অ্যামপ্লিফায়ার সার্কিটের জন্য আদর্শ।
এর জন্য বিস্তারিত পিনআউট ডেটা পাওয়া যায়নি STA335MLJ13TR.
দেখুন ডেটাশিট সম্পূর্ণ পিন কনফিগারেশনের জন্য।
সাধারণ ব্যবহার
STA335MLJ13TR এর জন্য উপযুক্ত 6 অ্যাপ্লিকেশনs: Compact Stereo Sound Bar, Bluetooth and Network Smart Speaker, TV and Monitor Audio Module, Multichannel Home Theater Front Panel, Portable and Panel-Mount Stereo Product, Digital Audio Source Development Platform.
Compact Stereo Sound Bar
The STA335MLJ13TR fits sound bars that receive a digital audio stream, because the Sound Terminal architecture integrates digital decoding, channel routing and volume control on the same die that carries the two class D output stages. This removes the external DAC, channel-select network and digital volume elements a discrete implementation would need, shrinking the audio board and cutting assembly cost. The practical benefit for the acoustic designer is that volume and channel changes are handled in hardware rather than in host firmware, which shortens the control-loop path and reduces the chance of audible steps during rapid level changes. Design-wise, the 36-terminal PowerSSO-36 EPD footprint concentrates the power stage on a thermally enhanced pad, so a two-layer board with a modest copper pour under the device can carry continuous stereo playback. Use the ST reference layout for the power and ground routing to keep switching-node energy out of the digital return path.
সুপারিশকৃত
Bluetooth and Network Smart Speaker
Network and Bluetooth speakers deliver compressed audio over a digital link, so the STA335MLJ13TR removes an entire digital-to-analog stage from the signal path and drives the transducers directly from the digital source. The two integrated class D channels provide the efficiency needed for battery- or mains-powered enclosures where amplifier heat must stay low compared with class A or class B designs. Because decoding and level control are executed inside the Sound Terminal block, the host application processor spends its cycles on connectivity and voice-assistant tasks instead of audio housekeeping, which is valuable on the common Wi-Fi plus Bluetooth dual-mode architectures used in this category. For layout, keep the digital interface traces away from the class D switching nets and provide a solid ground reference under the exposed pad so that switching current does not modulate the digital return.
সুপারিশকৃত
TV and Monitor Audio Module
Thin display panels have little internal volume, so the STA335MLJ13TR is a practical fit for flat-panel TV and monitor audio, where a two-channel class D stage with integrated digital conditioning drives slim speaker pairs from the panel's digital audio bus. Using a digital path avoids the analogue interconnects that pick up panel switching noise, and consolidating the processing frees board area behind the panel for the power supply and main logic. The key acoustic consideration is that small enclosure volumes limit low-frequency output, so the on-chip bass management functions of the Sound Terminal are valuable for aligning the limited cabinet response with the speaker pair. Keep the digital supply and the power-stage supply separated at the decoupling point, and use the ST recommended star-grounding so panel backlight ripple does not modulate the audio output.
সুপারিশকৃত
Multichannel Home Theater Front Panel
Home theater front panels often need several stereo zones with independent level control, and the STA335MLJ13TR provides the digital conditioning that makes such zoning straightforward from a single digital source. Rather than replicating DAC and gain stages per channel, the designer can feed digital streams to the Sound Terminal block and let the integrated processing handle level and routing, which reduces the analog component count and the number of trim points that need calibration. Two devices can also be used for a four-channel or surround configuration, in which case each device should be given its own local decoupling and its own ground reference to the star point, and the digital lines between them should be length-matched to avoid setup-and-hold problems. Use the pin-description table in the manufacturer datasheet when assigning the digital interface and configuration pins on each device.
সুপারিশকৃত
Portable and Panel-Mount Stereo Product
Battery-powered and panel-mounted stereo products need an amplifier that is efficient, small and tolerant of a compact thermal environment, and the STA335MLJ13TR addresses all three with an integrated two-channel class D stage in a single surface-mount package. Removing the external digital conditioning blocks frees board area that portable products can spend on battery or radio hardware, while the class D topology keeps dissipation low relative to linear output stages at the same output power. The consolidated digital path also simplifies firmware bring-up, since the host controller needs only to configure the Sound Terminal registers and stream audio. For a sealed enclosure, verify the estimated junction temperature at the highest sustained channel load and the worst ambient, and confirm the internal driver configuration with the manufacturer before freezing the mechanical design.
সুপারিশকৃত
Digital Audio Source Development Platform
Evaluation boards and digital audio source prototypes benefit from the STA335MLJ13TR because the complete digital conditioning and class D output path is available on one device, so a prototype reproduces the production topology from the first revision. This shortens the path between a bench prototype and a production design, and it means the digital interface timing, filtering and gain behaviour observed on the bench match the behaviour in the end product. For evaluation work, treat the exposed pad as a functional thermal and ground connection and reproduce the ST reference decoupling so that measurements are not distorted by supply-impedance artefacts. The same part is well suited to verifying multichannel configurations before committing to a larger board, because adding a second device is a straightforward parallel build rather than a redesign.
সুপারিশকৃত
সুপারিশকৃত পণ্যের সারসংক্ষেপ
এর জন্য ইঞ্জিনিয়ারিং রেফারেন্স ডেটা STA335MLJ13TR — তুলনা, ডিজাইন গাইডেন্স এবং কমপ্লায়েন্স তথ্য।
নির্বাচন গাইড
বিকল্পের সাথে তুলনা
| পারামিটার | এই পণ্য | STA335ML | STA335M |
|---|---|---|---|
| Package | PowerSSO-36 EPD | PowerSSO-36 EPD - same | PowerSSO-36 EPD - same |
| Brand | STMicroelectronics | STMicroelectronics - same | STMicroelectronics - same |
| Number of Channels | 2 (stereo) | 2 (stereo) - identical | 2 (stereo) - identical |
| Amplifier Class | Class D with digital audio conditioning | Class D with digital audio conditioning - identical | Class D with digital audio conditioning - identical |
| Number of Terminals | 36 | 36 - identical | 36 - identical |
| RoHS Compliance | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
মূল পার্থক্যসমূহ
- Digital audio conditioning and two-channel class D output consolidated on one die (বনামTAS5000PFB)
- ST Sound Terminal architecture with integrated bass and level management (বনামSTA321MPLTR)
- PowerSSO-36 EPD thermally enhanced surface-mount outline with 36 gull-wing terminals (বনামTAS5000PFB)
- Single-device stereo path versus dual-channel discrete amplifier approach (বনামSTPA003HSD-48X)
ডিজাইন নোট
Estimated: thermal performance of the PowerSSO-36 EPD is dominated by the exposed pad and the PCB copper under it, not by an external heatsink. Estimate dissipation with Pdiss = (Vsupply x Iavg - Vout x Iout) using the per-channel power, supply voltage and load impedance from the manufacturer electrical characteristics table, then apply the package thermal resistance for junction rise. Recommended: add a thermal via array directly into the exposed pad and pour copper on both top and bottom layers beneath the device so that sustained stereo playback does not drive the junction toward its datasheet maximum.
Use the ST reference layout for the PowerSSO-36 EPD land pattern rather than a generic 36-lead SOIC footprint, because the exposed pad region differs from standard gull-wing lead geometry and an incorrect land pattern causes soldering voids under the pad. Recommended: place the local input and output decoupling capacitors on the same side of the board as the device and as close to their pins as the layout rules allow, and confirm the pad-to-trace thermal-via count in the datasheet land pattern drawing.
The class D output stage switches between the supply rails at high frequency, so the switching-node current loop must be kept physically small and isolated from the digital audio return. Recommended: route the digital interface and its reference ground away from the output inductor and speaker nets, provide a dedicated, low-impedance ground return for the power stage, and keep the input and output decoupling connections short. This prevents switching energy from modulating the digital return and appearing as audible artefacts or EMI failures in end-product testing.
Because the Sound Terminal digital interface is fixed and tied to the host source configuration, a mismatch between the firmware configuration, the digital audio format and the pin assignment is the most common integration failure for this class of device. Recommended: use the pin-description table in the manufacturer datasheet when assigning configuration pins, confirm the host clocking and data alignment on the first bench revision, and treat the digital supply rail as a separate domain that must be filtered and decoupled independently of the class D power supply.
কমপ্লায়েন্স তথ্য
Distributor attribute data lists the STA335MLJ13TR as ROHS3 Compliant with a lead-free status. The part is classified as a consumer circuit device and is not marketed as an AEC-Q100 automotive-grade part. REACH, halogen-free and conflict-minerals declarations should be obtained from the manufacturer for the exact ordering code.
