TAS5122DFD - 30W Stereo Class-D Power Stage | Texas Instruments
MPN: TAS5122DFD ✓ Hoạt độngTAS5122DFD Tóm tắt
A Class-D digital power stage is an audio amplifier that switches its output between supply rails at a high carrier frequency. Compared with a linear amplifier, this architecture can provide much higher conversion efficiency and lower heat generation in portable and compact audio equipment. The TAS5122DFD operates in the class-D amplifier, digital power amplifier, audio power IC, and power management semiconductor categories.
The main operating characteristics are 30 W per channel into a 6 ohm load, a 0 V to 25.5 V supply range, and a 56-pin HTSSOP package. The PWM interface is intended to receive a digital audio signal from a compatible digital audio processor, while a passive demodulation filter reconstructs the audio waveform at the speaker output. These features make the device suitable for home theater receivers, DVD receivers, mini or micro component systems, and internet music appliances.
The main technical benefit is efficient stereo amplification in a single integrated power-stage package. Because the output stage operates by switching, designers can reduce the heat associated with linear amplification, although filtering, layout, power-supply stability, and speaker impedance remain important. The manufacturer datasheet identifies the TAS5122 family as a high-performance integrated stereo digital amplifier power stage and describes its use with a digital audio PWM processor and passive demodulation filter.
TAS5122DFD is suited to systems requiring two amplified channels, including home theater equipment, DVD receiver output stages, compact stereo systems, and network-connected audio products. It is particularly relevant when a system already uses a digital audio processor because the TAS5122DFD accepts PWM audio rather than conventional analog line-level input. System-level input filtering and gain planning must therefore be matched to the source processor and speaker load.
During layout, follow the manufacturer datasheet recommendations for the exposed pad, power-supply connections, output networks, and high-current ground paths. The HTSSOP thermal pad and surrounding copper are important for heat transfer at higher output power. Confirm the maximum power dissipation for the intended supply voltage, load impedance, channel loading, and ambient temperature before selecting the output-filter components and board construction.
This page combines the manufacturer electrical description with an engineering-focused view of the TAS5122DFD, including application fit, drop-in replacement considerations, layout cautions, and a parameter comparison. It is intended to help designers evaluate the power stage quickly while still using the manufacturer datasheet as the controlling document for ratings, pin connections, and production design details.
Bộ thay thế dễ dàng lắp đặt cho TAS5122DFD — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
TAS5122DFDR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TAS5122DCARG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TAS5122DFD Tỷ lệ tối đa & tính chất điện
| Product Type | Integrated stereo digital amplifier power stage |
| Amplifier Class | Class D |
| Channel Configuration | 2-channel stereo |
| Maximum Output Power | 30 W per channel |
| Recommended Speaker Load | 6 ohm |
| Supply Voltage Range | 0 V to 25.5 V |
| Input Signal Type | PWM |
| Amplifier Technology | PurePath Digital |
| Output Filtering | Passive demodulation filter |
| Hộp | 56-pin HTSSOP |
| Package Style | Pad-down |
| Kiểu lắp đặt | Surface mount |
| Power Supply Maximum | 25.5 V |
| Output Stage | Integrated H-bridge |
Hướng dẫn cấu hình chân TAS5122DFD pad-down
Cấu hình chân cho TAS5122DFD (pad-down gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho TAS5122DFD.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
TAS5122DFD phù hợp cho 6 Áp dụngs: Home Theater Stereo Power Amplifier, DVD Receiver Output Stage, Mini and Micro Component Stereo, Internet Music Appliance, Digital Active Speaker, Compact Stereo Power Amplifier.
Home Theater Stereo Power Amplifier
The TAS5122DFD can provide two 30 W Class-D output channels for powered home theater speakers when the source processor supplies PWM audio. Its 0 V to 25.5 V supply range accommodates typical system rails while the 6 ohm target load matches common passive speakers. The design should include the manufacturer-recommended passive demodulation filter, robust speaker-output routing, and a heat-spreading pad connection because sustained stereo output can dissipate substantial heat in a compact enclosure.
Được đề xuất
DVD Receiver Output Stage
A DVD receiver can use the TAS5122DFD as its integrated stereo Class-D speaker-power stage when the system architecture includes a compatible digital audio processor. The device provides up to 30 W per channel into 6 ohm loads and accepts PWM rather than conventional analog audio. The implementation must include the specified output filter and verify channel synchronization, channel mute behavior, and thermal performance across the intended listening-power range.
Được đề xuất
Mini and Micro Component Stereo
TAS5122DFD suits compact stereo products that need efficient, integrated amplification in limited board area. Its two-channel Class-D output stage can drive 6 ohm speakers at up to 30 W per channel without requiring a separate analog power-amplifier architecture. System designers should consider the HTSSOP exposed pad, copper area, passive output-filter footprint, and enclosure heat dissipation because efficiency alone does not eliminate the need to remove heat from the power stage.
Được đề xuất
Internet Music Appliance
The TAS5122DFD can form the speaker-output section of an internet music appliance that receives decoded digital audio and converts it through a digital audio processor into PWM signals. The Class-D architecture supports compact, efficient amplification for 6 ohm speakers at up to 30 W per channel. Design work should include startup sequencing, standby control, output-filter selection, and thermal validation at the maximum sustained output level expected from the enclosure.
Được đề xuất
Digital Active Speaker
A digital active speaker can use the TAS5122DFD as its two-channel Class-D power amplifier when a digital processor handles decoding, volume control, and PWM generation. This arrangement supports 30 W per channel into 6 ohm loads while keeping the audio path digital until the passive speaker filter. The board should reserve space for the manufacturer-specified filter and provide a low-impedance power and ground layout to limit switching losses and thermal rise.
Được đề xuất
Compact Stereo Power Amplifier
TAS5122DFD is appropriate for a compact stereo power amplifier built around digital signal generation and two speaker outputs. Its stated 30 W per channel capability provides useful power for desktop, bookshelf, and small room-theater speakers, while the 56-pin HTSSOP package supports surface-mount assembly. The designer must follow the datasheet land pattern and thermal-pad guidance, validate the passive output network, and confirm that the supply can sustain the selected output level without excessive voltage droop.
Được đề xuất
Dữ liệu tham khảo kỹ thuật cho TAS5122DFD — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | TAS5122DFDR | TAS5122DCARG4 |
|---|---|---|---|
| Package | 56-pin HTSSOP | 56-pin HTSSOP | 56-pin HTSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Power | Up to 30 W per channel into 6 ohm | Up to 30 W per channel into 6 ohm | Up to 30 W per channel into 6 ohm |
| Channel Configuration | 2-channel stereo | 2-channel stereo | 2-channel stereo |
| Input Signal | PWM | PWM | PWM |
| Target Speaker Impedance | 6 ohm | 6 ohm | 6 ohm |
| Amplifier Technology | PurePath Digital Class-D | PurePath Digital Class-D | PurePath Digital Class-D |
| Output Filtering | Passive demodulation filter | Passive demodulation filter | Passive demodulation filter |
| Ordering Configuration | TAS5122DFD | Alternate ordering suffix for the same device family | Alternate family ordering suffix; verify mechanical details |
Bảo phân biệt quan trọng
- Two-channel integration in one power-stage package (vsTAS5122DCARG4)
- Direct integration with a digital audio processing chain (vsTAS5122DFDR)
- High output capability for a compact surface-mount power stage (vsTAS5122DCARG4)
Ghi chú thiết kế
Connect the HTSSOP exposed pad to a continuous copper area and follow the manufacturer land-pattern guidance. Estimated: thermal performance depends on the actual supply voltage, load impedance, output power, channel activity, ambient temperature, copper area, and enclosure airflow; calculate junction temperature from those values because the product record does not establish a board-specific thermal resistance. Increase copper area or reduce maximum output power if the estimate approaches the device limit.
Use the manufacturer datasheet land pattern and assign all 56 pins from its pin-description table. Place the passive output-filter components directly at the Class-D speaker outputs, keep switching-current loops compact, and provide low-impedance power and ground connections. The exposed pad is not a substitute for the individual ground pins, and routing speaker-current returns through sensitive signal ground can introduce audible noise or instability.
The power supply must support the 0 V to 25.5 V operating range and the current demanded by the selected output level into 6 ohm speakers. Estimated: at 30 W per channel, a 6 ohm load requires approximately 2.0 A per channel at the speaker output before accounting for switching losses and filter current. Add appropriate supply decoupling, verify startup sequencing, and avoid relying on a 30 W headline rating without checking thermal and supply limits.
Do not treat TAS5122DFD as an analog line-input amplifier; it expects PWM signals from a compatible digital audio processor. Confirm the processor's signal format, clocking requirements, mute polarity, differential or common-mode signal arrangement, and gain setup. Also verify the exact exposed-pad and lead dimensions before replacing TAS5122DFD with a similarly named ordering suffix, since package marking alone does not establish mechanical compatibility.
Thông tin tuân thủ
The manufacturer product page and datasheet link identify the TAS5122 family, but the supplied product record does not provide explicit compliance declarations.
