STA32613TR - 2.1-Ch 100dB SNR DDX Digital Audio Amplifier | STMicroelectronics
MPN: STA32613TR ✓ פעילSTA32613TR סקירה
An all-digital audio amplifier (often called a digital input amplifier or D2A/D3A stage) is an integrated circuit that accepts a digital audio stream, performs DSP inside the silicon, and drives speakers through a switching power stage. It sits in the hierarchy above analog class-D controllers: digital input -> digital audio processing -> DDX power output stage -> power management IC -> semiconductor. Because the amplifier consumes I2S/SAI data rather than an analog line signal, it eliminates the analog pre-amplifier chain and its associated distortion and noise.
The STA32613 offers three programmable power output configurations at 10% THD, giving the designer a choice of channel balance between the two main speakers and the subwoofer. Digital gain and attenuation are adjustable in 0.5 dB steps, and the DSP block provides up to four programmable 28-bit biquad EQ filters per channel plus bass and treble tone control. Autmodes provide preset volume curves, loudness compensation and preset EQ settings, which shortens firmware bring-up time.
Internally, the part is a system-on-chip: a 24-bit digital audio interface, an effects processing engine, volume and tone control blocks, and the DDX class-D output stage with integrated high-voltage switching transistors and a slung thermal pad. The 100 dB SNR figure is specified over a wide band including digital input paths, so system noise is dominated by the speaker and passive network rather than the amplifier itself.
Typical applications are active soundbars and home-theater subwoofer/active-speaker combinations, compact 2.1 speaker sets, soundbar sub-amplifier modules, PC and TV speaker amplification, and automotive or industrial audio modules that need a digital audio input and high efficiency in a small footprint.
When designing with the STA32613TR, remember that the external LC output network and the thermal pad layout dominate acoustic performance and reliability; a PowerSO-36 footprint without a properly stitched thermal via array can overheat the DDX stage at sustained high output power. The I2S/SAI clocking must also be configured so that the digital input rate stays inside the supported range for the selected sample rate.
This page consolidates distributor pricing, verified electrical parameters, drop-in alternatives and practical layout guidance for the STA32613TR into a single engineering reference that goes beyond the manufacturer datasheet.
חלופות תחליף ישיר עבור STA32613TR — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם STA32613TR (אותו גורם צורה וטביעת רגל) — שונים ב Package, Product Type.
STA326M
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
STA311
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
STA311M
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
STA310
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←STA32613TR דירוגים מרביים ומאפיינים חשמליים
| Product Type | 2.1-channel high-efficiency digital audio system (DDX digital input amplifier) |
| Supply Voltage Range | 10 V to 36 V |
| Number of Channels | 2.1 (2 main + 1 subwoofer) |
| SNR / Dynamic Range | 100 dB |
| Input Sample Rate | Up to 192 kHz |
| Internal Resolution | 24-bit |
| Power Output Configurations | 3 programmable configurations @ 10% THD |
| Digital Gain / Attenuation Step | 0.5 dB |
| EQ Filters | Up to 4 programmable 28-bit biquads per channel |
| Tone Control | Bass and treble |
| Digital Audio Interface | I2S / digital audio interface |
| מארז | PowerSO-36 (slug up) |
| מספר פינים | 36 pins |
| סוג הרכבה | Surface Mount |
| Unit Price at qty 1 | 21.7617 USD as of 2026-10-30 |
מדריך תצורת פינים של STA32613TR powerso-36 (slug up)
תצורת פינים עבור STA32613TR (מארזת powerso-36 (slug up)). רכיב אנלוגי זה כולל פיני כניסה, יציאה ואספקת מתח. יש לעיין בגיליון הנתונים של היצרן לתצורות פיני איפוס היסט, פיצוי והפעלה. אידיאלי למעגלי עיצוב אותות ומגברים.
אין נתוני פריסת פינים מפורטים עבור STA32613TR.
עיינו ב- גיליון נתונים עבור תצורת פינים מלאה.
יישומים טיפוסיים
STA32613TR מתאים עבור 6 יישוםs: Active Soundbar Speaker Modules, Powered Subwoofer and 2.1 Speaker Sets, Home Theater Active Speakers, PC and Gaming Desktop Speakers, Automotive and Industrial Audio Modules, Digital-Input Public Address and Distributed Audio.
Active Soundbar Speaker Modules
The STA32613TR suits soundbar designs where the source is already a digital audio bus and the amplifier must deliver two main channels plus a subwoofer from a single IC. Its three programmable power output configurations at 10% THD let the designer rebalance amplifier power between the stereo pair and the subwoofer to match driver impedance without changing the PCB, while 100 dB SNR and 192 kHz input support keep the noise floor well below the acoustic noise of a domestic room. The digital gain in 0.5 dB steps plus bass, treble and preset EQ automodes shorten the bring-up effort for a product that must ship with multiple sound modes, and the 10 V to 36 V supply range accepts 12 V and 24 V amplifier bus rails.
מומלץ
Powered Subwoofer and 2.1 Speaker Sets
In an active subwoofer or compact 2.1 speaker set, the STA32613TR provides the entire signal path from digital input to speaker drive in one IC. The 24-bit internal processing with up to four 28-bit biquads per channel lets a designer implement crossover slope, room correction and limiter gain without an external DSP, while the 0.5 dB digital attenuation granularity makes volume matching between the subwoofer and satellite channels straightforward. With a 10 V to 36 V supply range, the same part covers both portable 12 V packs and pro-audio 24 V rails, and the DDX switching output stage delivers high efficiency so the amplifier does not dominate system thermal design.
מומלץ
Home Theater Active Speakers
The STA32613TR fits home-theater active speakers where HDMI or optical sources feed a digital audio processor that then drives the speaker. Taking a 24-bit digital stream up to 192 kHz preserves high-resolution source fidelity for cinema and lossless content, and the 100 dB SNR and dynamic range specification means the amplifier contributes negligible noise to the listening room. The on-chip automodes for preset volume curves and loudness are directly useful for matching channel levels across a multi-speaker theater system, and having the amplifier, volume control and EQ on one IC frees board area for the power supply in slim soundbar-style cabinets.
מומלץ
PC and Gaming Desktop Speakers
In PC and gaming speaker systems, the STA32613TR replaces the analog codec output stage plus a separate class-D controller with a single digital-input device. Because the DAC and pre-amplifier live in the host codec, the signal path into the amplifier is purely digital and the 100 dB SNR and dynamic range of the DDX stage ensures the noise floor is set by the codec rather than the amplifier. The PowerSO-36 slug-up package with an exposed pad suits compact desktop cabinets where the amplifier must dissipate its output-stage heat directly into the enclosure ground plane, and the automode EQ presets quickly match the speaker response to different desk and near-field listening positions.
מומלץ
Automotive and Industrial Audio Modules
The STA32613TR is a candidate for 12 V and 24 V audio modules in vehicles and industrial equipment where a digital audio bus feeds powered speakers. The 10 V to 36 V supply range sits directly on the vehicle battery transient-tolerant bus, and the wide operating temperature entry point of -20 °C suits many industrial environments. Its all-digital architecture removes analog trim and calibration steps, which matters in high-volume manufacturing where channel-to-channel matching and end-of-line test time dominate cost. Note that the AEC-Q100 qualification status of this specific part is not stated in the verified sources, so a qualified variant must be confirmed for a -40 °C to +125 °C automotive specification.
מומלץ
Digital-Input Public Address and Distributed Audio
Distributed audio and compact PA nodes that receive a digital audio feed benefit from the STA32613TR because the entire amplification path remains in the digital domain until the speaker terminals, avoiding accumulated analog noise over long cable runs. The three power output configurations let a single board SKU serve different speaker combinations, for example driving two 8-ohm satellites and one subwoofer or rebalancing toward a mono-heavy layout. The up-to-192 kHz input rate provides headroom for high-resolution distribution sources, while the biquad EQ and limiter-like automodes allow the module to be tuned in the field without external DSP hardware, reducing per-node BOM cost in installations with many endpoints.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור STA32613TR — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | STA326M | STA311 | STA311M | STA310 |
|---|---|---|---|---|---|
| Package | PowerSO-36 (slug up) | PowerSO-36 (slug up) - same | PowerSO-36 (slug up) - same | PowerSO-36 (slug up) - same | PowerSO-36 (slug up) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Channel Configuration | 2.1 channels (2 main + 1 subwoofer) | 2.1 channels | 2.1 channels | 2.1 channels | 2.0 channels (stereo, no subwoofer channel) |
| Digital Processing | Up to 4 programmable 28-bit biquads per channel, bass/treble tone control, automodes for volume, loudness and preset EQ | Extended processing with digital audio output capability | Reduced processing feature set | Richer processing block with additional automodes | Stereo-oriented processing |
מבדילים עיקריים
- Three programmable power output configurations within one 2.1-channel IC (לעומתSTA311)
- Full automode package reduces firmware bring-up time (לעומתSTA310)
- High-resolution digital input with low amplifier-added noise (לעומתSTA311M)
הערות תכנון
The DDX output stage of the STA32613TR dissipates power in the switching devices that are bonded to the exposed pad of the PowerSO-36 package. Stitch the thermal pad to the ground plane with a dense array of small vias rather than a few large ones, and keep the supply and output filter components close to the package so the high-current switching loop stays compact. Without a proper thermal path the junction temperature rises rapidly at sustained high output power, and the result is thermal shutdown, audible clipping or reduced long-term reliability.
Place the speaker output LC filter network immediately at the DDX output pins and route the filtered outputs to the connector with the shortest possible traces. Keep the digital audio input and control lines away from the power stage nodes and the output switching loops, and provide a solid, unbroken ground plane under the whole audio path. Because the DDX output is a high-current switching reference, small return-path discontinuities in the plane will be injected directly into the speaker output as EMI and audible artefacts.
Do not assume a standard PowerSO-36 land pattern from another vendor or another ST device matches this part's pinout - the STA32613TR assigns specific pins to the digital audio interface, control signals, output stages and the exposed pad. Confirm the pin table in the STMicroelectronics datasheet before routing. Also verify that the I2S/SAI clocking and sample rate fall inside the supported range for the selected output configuration, and that the bypass and supply capacitors meet the ESR and tolerance requirements specified by the manufacturer.
Switching class-D amplifiers radiate harmonics that can desensitize adjacent analog channels in a shared enclosure. Keep the output filter values recommended by STMicroelectronics and avoid long, unshielded speaker traces on the PCB. If the module sits next to radio or microphone circuits, add filtering on the amplifier supply rail and confirm radiated emissions with a near-field probe during prototype bring-up rather than after tooling the enclosure.
מידע על תאימות
No explicit RoHS, REACH, AEC-Q100 or conflict-minerals statements appeared in the verified sources retrieved for this page; values are left as unknown except AEC-Q100, which is not stated for this part and is therefore recorded as not qualified. STMicroelectronics parts are generally released with a RoHS-compliant material declaration, but this must be confirmed on the orderable part page before being claimed in a declaration.
