TAS5142DDV - 100W Stereo Class-D Power Stage | Texas Instruments
MPN: TAS5142DDV ✓ Hoạt độngTAS5142DDV Tóm tắt
A Class-D audio power amplifier is an efficient switching amplifier that converts a PWM signal into a filtered, high-power audio output. It belongs to the amplifier IC hierarchy, which includes digital audio power stages, audio amplifiers, and integrated circuits. Compared with a conventional linear output stage, Class-D operation concentrates more of the supplied energy into the audio load, making it well suited to compact stereo and home-theater systems operating from a single supply rail.
The TAS5142DDV supports up to 100 W per channel in stereo operation and up to 200 W in mono operation. Its supply input spans 0 V to 34 V. According to the Texas Instruments datasheet, signal-to-noise ratio exceeds 100 dB in A-weighted measurement, while total harmonic distortion plus noise remains below 0.1% at 1 W. Output capability is specified for 4 Ω, 6 Ω, and 8 Ω bridged loads, as well as 2 Ω and 3 Ω parallel-bridged configurations.
The device uses PWM signaling and multiple power-output stages to reproduce the supplied audio waveform. Its thermally enhanced HTSSOP construction provides dedicated power and ground connections needed to carry substantial output current. Exact pin assignments, exposed-pad requirements, output-current limits, and protection thresholds should be taken from the pin-description and absolute-maximum-rating tables in the manufacturer datasheet.
Typical applications include powered bookshelf speakers, home-theater amplifier modules, multimedia speaker systems, active subwoofer enclosures, and compact consumer audio products. The 44-pin DDV package makes the part appropriate for multilayer PCB layouts where the exposed thermal pad and copper area can be connected to an effective thermal path.
Thermal design is the principal implementation concern because the amplifier can dissipate substantial heat as output power rises. Keep the exposed pad on a continuous ground plane, use the recommended via pattern, provide adequate copper on both sides of the PCB, and confirm junction temperature against the worst-case load, supply voltage, and ambient temperature. The LC output-filter and speaker-load requirements listed in the datasheet must also be followed to preserve stability and audio performance.
This product page combines the manufacturer’s headline power ratings with package, thermal, comparison, and application guidance for engineers evaluating the TAS5142DDV. It supports faster part selection by separating verified electrical capabilities from unresolved design details that must be confirmed against the latest datasheet and PCB guidelines.
Bộ thay thế dễ dàng lắp đặt cho TAS5142DDV — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
TAS5142DDVR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TAS5342LADDV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TAS5142DDV Tỷ lệ tối đa & tính chất điện
| Product Type | Stereo Class-D audio amplifier power stage |
| Channel Count | 2 channels |
| Stereo Output Power | 100 W |
| Mono Output Power | 200 W |
| Supply Voltage Range | 0 V to 34 V |
| Input Signal Type | PWM |
| Amplifier Topology | Class-D |
| Supported BTL Loads | 4 ohm, 6 ohm, and 8 ohm |
| Supported PBTL Loads | 2 ohm and 3 ohm |
| Signal-to-Noise Ratio | >100 dB A-weighted |
| Total Harmonic Distortion Plus Noise | <0.1% at 1 W |
| Hộp | 44-pin HTSSOP (DDV) |
| Kiểu lắp đặt | Surface Mount |
| Số chân | 44 pins |
| Thermal Construction | Thermally enhanced HTSSOP |
Hướng dẫn cấu hình chân TAS5142DDV 44-pin htssop (ddv)
Cấu hình chân cho TAS5142DDV (44-pin htssop (ddv) 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 TAS5142DDV.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
TAS5142DDV phù hợp cho 6 Áp dụngs: Powered Bookshelf Speakers, Home-Theater Amplifier, Active Subwoofer, Multimedia Speaker Systems, Digital Audio Speaker Module, Consumer Audio Amplifier.
Powered Bookshelf Speakers
The TAS5142DDV fits powered bookshelf speakers that require two high-power amplifier channels without occupying a large portion of the PCB. Its 100 W per-channel stereo capability supports 4 Ω, 6 Ω, and 8 Ω bridged speaker loads when the supply and thermal design support the required output. The PWM-input architecture also simplifies integration with a digital audio processor because the upstream device performs modulation before the power stage converts the signal into speaker current. In implementation, follow the manufacturer’s output-filter topology, provide the prescribed decoupling, and connect the exposed thermal pad to a low-impedance ground plane. The 44-pin HTSSOP requires deliberate via placement and uninterrupted copper to remove heat without disturbing the high-current output paths.
Được đề xuất
Home-Theater Amplifier
The TAS5142DDV is appropriate for a compact home-theater power amplifier because it combines two 100 W stereo channels with >100 dB A-weighted signal-to-noise ratio in a single 44-pin HTSSOP power stage. The low-noise result supports clean reproduction of dialogue and music, while the 0 V to 34 V supply range accommodates conventional single-supply power architectures. The amplifier stage can drive 4 Ω, 6 Ω, or 8 Ω BTL loads, enabling a common design to cover several speaker configurations. Design the board around the exact PWM control timing and recommended LC output filters. Keep high-current output returns compact, separate sensitive input routing from switching nodes, and thermally couple the exposed pad to broad ground copper and through-plane vias.
Được đề xuất
Active Subwoofer
The TAS5142DDV can serve as the high-power output stage of an active subwoofer using its 200 W mono capability. This configuration allows one bridge-tied channel to operate at higher output power than a conventional stereo load, which is useful when the speaker enclosure and power supply are designed for that operating point. The >100 dB A-weighted signal-to-noise ratio helps preserve low-level musical detail below the crossover region. Use the manufacturer’s recommended output-filter values for the selected impedance and verify every component against the applicable voltage and current requirements. A sustained 200 W operating level also makes thermal validation essential: connect the exposed pad to substantial copper, follow the prescribed via pattern, and test the assembled amplifier under worst-case ambient and load conditions.
Được đề xuất
Multimedia Speaker Systems
The TAS5142DDV is suitable for multimedia speaker systems where two-channel amplification, efficient power delivery, and compact packaging are priorities. Its 100 W stereo rating provides ample headroom for high-volume playback, while the 44-pin HTSSOP offers a practical surface-mount solution for multilayer consumer-audio boards. The Class-D power stage can operate directly from a single supply up to 34 V, reducing the need for multiple power rails. In a typical system, an upstream audio processor provides the PWM command signal, and the TAS5142DDV drives the left and right channels through separate recommended output filters. Layout should prioritize short output-current paths, low-impedance power and ground distribution, controlled switching-node area, and an exposed-pad connection capable of supporting the expected heat rise.
Được đề xuất
Digital Audio Speaker Module
The TAS5142DDV fits a digital audio speaker module that accepts PWM commands directly from a codec, DSP, or digital power controller. Accepting PWM rather than requiring an analog audio input simplifies the signal path between the modulator and the output power stage. With support for 100 W stereo and 200 W mono operation, the device can address compact powered speakers, soundbars, and installation speakers where conventional analog power stages would be inefficient. The board must preserve the PWM signal’s timing and integrity across the long distance between the controller and amplifier. Route control signals away from output inductors and switching-current copper, use a suitable ground reference, and place input and supply decoupling according to the manufacturer layout. Confirm output-filter tolerances and thermal performance at the intended speaker impedance.
Được đề xuất
Consumer Audio Amplifier
The TAS5142DDV is appropriate for a consumer audio amplifier requiring a high-efficiency, integrated Class-D output stage. The device supports multiple conventional speaker impedances in BTL operation, including 4 Ω, 6 Ω, and 8 Ω, while its >100 dB A-weighted signal-to-noise ratio is useful for clean music playback. The 0 V to 34 V supply range and 44-pin HTSSOP package support integration into compact single-supply designs. Designers should follow the Texas Instruments reference circuit for decoupling and output filtering, use low-ESR capacitors where specified, and avoid extending high-current traces unnecessarily. The exposed pad is central to heat removal, so its via field and surrounding copper should match the manufacturer’s land pattern. Validate gain settings, protection behavior, and speaker-load stability in the final enclosure because thermal conditions differ from an open test bench.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TAS5142DDV — 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 | TAS5142DDVR | TAS5342LADDV |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 44-pin HTSSOP (DDV) | 44-pin HTSSOP (DDV) | 44-pin HTSSOP (DDV) |
| Input Signal Type | PWM | PWM | PWM |
Bảo phân biệt quan trọng
- High-output dual-channel capability in one power stage (vsTAS5342LADDV)
- Broad single-supply operating range (vsTAS5142DDVR)
- Documented performance for multiple common speaker impedances (vsTAS5342LADDV)
Ghi chú thiết kế
The 44-pin HTSSOP requires an intentional thermal path. Place the exposed pad on a continuous ground plane, populate the manufacturer-recommended via array, and provide uninterrupted top and bottom copper where the layout permits. Estimated thermal design is required at the maximum sustained output condition using the actual supply voltage, load impedance, amplifier efficiency, ambient temperature, and PCB copper area; the 100 W stereo rating alone is not a valid junction-temperature calculation.
Keep the power-output connections short and wide so copper loss and inductive voltage spikes remain controlled. Use multiple parallel connections where the datasheet permits, place output inductors and filter capacitors close to their assigned amplifier pins, and maintain low-impedance supply and ground distribution. Do not route sensitive PWM input traces beneath output-filter components or across switching-current paths, because inductive coupling can degrade command integrity and audio performance.
The output capability depends on supply voltage, speaker impedance, amplifier efficiency, and cooling conditions. Select the load and output-filter network from the Texas Instruments TAS5142 datasheet rather than treating the 100 W stereo and 200 W mono figures as unconditional ratings. Validate the power-supply current, wiring, protection scheme, and thermal design at the worst sustained output level expected in the finished product.
Do not substitute the power stage based only on package dimensions. The control interface, PWM timing, output-filter topology, protection behavior, exposed-pad connection, and thermal limits must all be checked against the current datasheet. In particular, verify component voltage ratings, output-filter tolerances, and startup behavior before reusing a board designed for another Class-D family.
Thông tin tuân thủ
Formal RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not identified in the available product information. AEC-Q100 is treated as not applicable because this is an audio power-stage IC rather than an explicitly identified automotive-qualified orderable part.
