TAS5122DCA - 50W Stereo Class-D Power Stage | TI
MPN: TAS5122DCA ✓ AktifTAS5122DCA Ringkasan
A Class-D audio power amplifier is an efficient switching amplifier that uses pulse-width-modulated signals to drive a passive loudspeaker through a demodulation filter. The TAS5122DCA belongs to the digital audio amplifier hierarchy: Class-D amplifier, integrated stereo power stage, audio amplifier IC, and power-management semiconductor. Unlike an analog input amplifier, it does not directly accept a conventional audio waveform; it requires PWM-compatible digital audio signaling.
Key features include two-channel stereo operation, a 50 W stereo power rating, PWM signal compatibility, and TI PurePath Digital technology. The device is intended for use with a TAS50XX-family digital audio PWM processor and a passive output filter. Its DC-coupled speaker output architecture supports efficient conversion of digital audio power into analog speaker drive without requiring a traditional analog power-output stage.
The architecture separates digital signal generation from analog power amplification. A compatible audio processor generates the PWM waveform, while the TAS5122DCA performs the high-current switching function and drives the speaker network. This division allows system designers to use a digital signal-processing path for decoding, volume control, channel mixing, and protection while retaining efficient Class-D output-stage behavior.
Typical applications include DVD receivers, home-theater systems, mini and micro component systems, and internet music appliances. These products benefit from compact digital audio processing, efficient speaker drive, and a direct connection between a PWM audio processor and the integrated stereo power stage. A passive LC demodulation filter is used between the amplifier outputs and the loudspeakers to recover the audio waveform.
Power-supply design must accommodate the amplifier's stated 0 V to 25.5 V supply range and provide sufficient current for the intended speaker load. The HTSSOP package includes a thermal pad for heat dissipation, making copper-area and thermal via placement important on multilayer printed circuit boards. Stable operation also depends on correct output-filter selection and proper decoupling of the power rails.
This page combines the manufacturer's device description, package and application details, drop-in alternatives, comparison information, and practical layout guidance. It helps engineers identify the TAS5122DCA for efficient digital speaker amplification while separating known device characteristics from parameters that require confirmation against the latest manufacturer documentation.
Pilihan pengganti yang segera untuk TAS5122DCA — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Tiada pilihan pengganti yang segera untuk produk ini.
Minta AlternatifTAS5122DCA Penilaian maksimum & Ciri-ciri Elektrik
| Product Type | Stereo Class-D audio power amplifier |
| Konfigurasi Output | 2-channel stereo |
| Stereo Output Power | 50 W |
| Maximum Power per Channel | 30 W into 6 ohms |
| Supply Voltage Range | 0 V to 25.5 V |
| Input Signal Type | PWM |
| Audio Technology | PurePath Digital |
| Compatible Processor Family | TAS50XX digital audio PWM processor |
| Output Stage | Integrated stereo digital amplifier power stage |
| Output Filter Requirement | Passive demodulation filter |
| Kemasan | HTSSOP-56 (DCA) |
| Kiraan Pin | 56 pins |
| Jenis Pemasangan | Surface mount |
| Package Thermal Feature | Exposed thermal pad |
Panduan Konfigurasi Pin TAS5122DCA exposed thermal pad
Konfigurasi pin untuk TAS5122DCA (exposed thermal pad pakai). Komponen analog ini mempunyai pin masukan, keluaran, dan kuasa. Rujuk dokumen pengeluar untuk konfigurasi pengecualian, pemulihan, dan pin aktifkan. Ideal untuk pengawasan isyarat dan litar pengukur.
Tiada data garisan pin yang diperoleh untuk TAS5122DCA.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
TAS5122DCA patut untuk 6 aplikasis: Home Theater Stereo Amplifier, DVD Receiver Speaker Output, Compact Stereo Music System, Internet Music Appliance, Mini Component Stereo System, Digital Speaker Amplifier Module.
Home Theater Stereo Amplifier
The TAS5122DCA fits a home-theater stereo output stage because it delivers up to 30 W per channel into 6-ohm speakers from a 0 V to 25.5 V supply. A TAS50XX-compatible digital audio processor can provide decoded channel data, volume control, and PWM signals, while the TAS5122DCA provides efficient switching power amplification. The finished amplifier requires passive demodulation filters, a high-current supply, and careful thermal design around the HTSSOP exposed pad.
Disebarkan
DVD Receiver Speaker Output
The TAS5122DCA is appropriate for a DVD receiver that combines digital audio decoding with passive speaker drive. Its 50 W stereo architecture and 30 W per-channel capability into 6 ohms provide useful output power while the PWM interface keeps the audio path digital. The receiver power supply should remain within the 0 V to 25.5 V operating range, and the output filters must be designed for the switching waveform and intended speaker impedance.
Disebarkan
Compact Stereo Music System
The TAS5122DCA supports compact stereo systems where efficient digital amplification and integrated power-stage functionality simplify the signal chain. Its 50 W stereo rating is intended for higher-power passive speaker configurations, including the manufacturer's stated 6-ohm, 30 W-per-channel condition. Placement close to the output filter and speaker connectors helps control board area, while the exposed pad must be tied to the thermal and ground system using the manufacturer's layout guidance.
Disebarkan
Internet Music Appliance
The TAS5122DCA is suitable for an internet music appliance that decodes digital audio and drives passive speakers without a conventional analog power-output chain. The PWM-input power stage can work with a compatible digital audio processor, reducing the number of signal-conversion stages and supporting an efficient end-to-end digital architecture. Supply capacity, output-filter losses, enclosure cooling, and speaker impedance remain the principal design constraints for reliable playback.
Disebarkan
Mini Component Stereo System
The TAS5122DCA fits a mini component stereo system requiring substantial speaker output from a compact digital audio architecture. The 50 W stereo designation and 30 W per-channel capability into 6 ohms align with compact passive speakers, while the PWM input supports integration with digital decoding and volume-control circuitry. A practical implementation needs a stable high-current supply, passive output filtering, and PCB copper that adequately removes heat from the 56-pin HTSSOP power stage.
Disebarkan
Digital Speaker Amplifier Module
The TAS5122DCA can form the power-amplifier section of a modular digital speaker system. Its integrated stereo architecture accepts PWM signals from an upstream processor and delivers up to 30 W per channel into 6-ohm loads, making it suitable for a dedicated amplifier board. The module design should define the passive filter topology and thermal boundary early, provide local supply bypassing, and keep switching-current loops short to reduce power-distribution noise.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk TAS5122DCA — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini |
|---|---|
| Brand | Texas Instruments |
| Package | HTSSOP-56 (DCA) |
| Output Configuration | 2-channel stereo |
| Stereo Output Power | 50 W |
| Power per Channel | 30 W into 6 ohms |
| Supply Voltage Range | 0 V to 25.5 V |
| Input Architecture | PWM input |
| Audio Technology | PurePath Digital |
| Pin Count | 56 pins |
| Output Filter | Passive demodulation filter |
Catatan Desain
Treat the DCA exposed pad as the principal thermal path for the 56-pin HTSSOP power stage. Provide uninterrupted top-layer copper beneath the device, connect it to the manufacturer-recommended ground and thermal structure, and add thermal vias where the PCB construction permits. Estimate: with a 50 W stereo output rating, actual continuous dissipation depends on supply voltage, output power, load, and efficiency; calculate worst-case conduction loss before defining copper area or enclosure cooling.
Place the input, output, and supply decoupling components directly beside their associated pins. Keep the high-current switching loop between the power-stage pins, supply capacitors, and ground return physically small. The HTSSOP footprint also requires thermal-via placement that avoids compromising electrical isolation or the manufacturer's recommended exposed-pad connection. Confirm the exact pin assignments and recommended land pattern in the Texas Instruments TAS5122 datasheet before releasing artwork.
Design the passive output network for the PWM switching waveform, speaker impedance, channel-to-channel matching, and intended acoustic bandwidth. Place the demodulation filter close to the amplifier outputs and speaker connectors so that high-current switching paths do not cross sensitive signal routes. Validate filter behavior, speaker loading, thermal performance, and electromagnetic compatibility in the final enclosure rather than relying on a simulated 6-ohm load alone.
Do not treat the 50 W stereo rating as the result of connecting conventional analog audio to the device. The TAS5122DCA requires PWM signals from a compatible digital audio processor, and its output requires a passive demodulation filter. Also avoid operating the supply above the stated 25.5 V maximum or using a speaker impedance below the design target without reevaluating current, distortion, protection behavior, and thermal limits.
Maklumat Kesediaan
Compliance status is not stated in the cited manufacturer and distributor records.
