TAS5760L 21W Stereo I2S Class-D Audio Amplifier | TI
MPN： TAS5760LDDCA ✓ 啟用中TAS5760LDDCA 概覽
A Class-D audio amplifier is a switching amplifier that uses PWM modulation of power output stages to achieve efficiencies far above linear Class-AB designs, typically above 85-90 percent. Within the power-management and audio-signal-chain hierarchy, the TAS5760L sits between a digital audio source (SoC, DSP, or MCU with I2S/TDM output) and the loudspeaker, integrating DAC, processing, and power stage in one IC, reducing board area and EMI-filtering complexity compared to discrete solutions.
Key features include both hardware-mode (strap-pin) and software-mode (I2C) control, an integrated digital clipper that protects speakers from overdriven signals, multiple gain settings, and two speed modes supporting a wide range of audio clock configurations. The 48-pin package also integrates a headphone or line-output driver path, eliminating an external DAC-headphone amplifier in many designs.
Architecturally, the TAS5760L processes the incoming I2S stream digitally - including volume, EQ-based gain options, and clipping control - before driving a closed- or open-loop PWM power stage with integrated FETs. This digital-in architecture avoids the noise and mismatch of an external analog DAC-to-amp path and keeps the audio signal in the digital domain until final amplification.
Typical applications include smart speakers and voice-assistant devices, portable Bluetooth speakers, soundbars, TV audio, and general-purpose powered-speaker designs. The wide 4.5 V to 16.4 V supply range covers single lithium-ion battery packs through 12 V wall adapters.
Design tip: choose hardware mode for lowest BOM cost, but software mode (I2C) unlocks the full register set for volume, EQ, and diagnostics; always provide adequate copper area under the thermal pad for the 42 W mono condition.
直接替換替代品，適用於 TAS5760LDDCA — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
TAS5760MDDCA
✅ 直接替換📋 參考替代品（不在目錄中）
TAS5760LMDCA
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TAS5766MDCA
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TAS5760MDDCAG4
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TAS5760LDDCA 最大額定值與電氣特性
| Amplifier Type | Class-D |
| 輸出配置 | 1-Channel Mono or 2-Channel Stereo |
| Output Power (Stereo) | 21 W per channel |
| Output Power (Mono) | 42 W |
| Supply Voltage Range | 4.5 V to 16.4 V |
| Audio Input | I2S / TDM digital serial audio port |
| Control Interface | Hardware mode (pin straps) or software mode (I2C) |
| Speed Modes | Two speed modes for audio clock configurations |
| Integrated Digital Clipper | Yes |
| Gain Options | Multiple gain options |
| Headphone/Line Output | Yes (48-pin package variant) |
| 封裝 | 48-HTSSOP (PowerPAD) |
| 安裝類型 | Surface Mount |
| Pin Compatibility | TAS5760xx family pin-to-pin compatible in 48-Pin TSSOP |
| RoHS 狀態 | Compliant |
TAS5760LDDCA 腳位配置
| 腳位 1 | DVDD — Digital core supply |
| 腳位 2 | SCL — I2C clock (software mode) |
| 腳位 3 | SDA — I2C data (software mode) |
| 腳位 4 | A1 — I2C address strap |
| 腳位 5 | A2 — I2C address strap |
| 腳位 6 | PDN_RESET — Power-down/reset control |
| 腳位 7 | SCK — I2S serial clock input |
| 腳位 8 | LRCLK — I2S left/right word clock |
| 腳位 9 | SDIN — I2S serial data input |
| 腳位 10 | MCLK — Master audio clock input |
| 腳位 20 | OUTA/OUTB — Class-D half-bridge outputs (see datasheet for exact channel pins) |
| 腳位 24 | PVDD — Power-stage supply (4.5 V to 16.4 V) |
| 腳位 36 | GND — Ground / PowerPAD thermal connection |
| 腳位 40 | OUTL/OUTR-HP — Headphone/line output driver pins (48-pin variant) |
典型應用
TAS5760LDDCA 適用於 6 應用s: Smart Speakers and Voice Assistants, Portable Bluetooth Speakers, Soundbars and TV Audio, Multimedia Docking and PC Speakers, Automotive Infotainment Rear-Seat Audio, Industrial and Conference Room Audio.
Smart Speakers and Voice Assistants
The TAS5760L fits smart speakers because its I2S input connects directly to voice SoCs without an external DAC, and its integrated digital clipper protects small full-range drivers from clipping during loud wake-word responses. With 21 W per channel stereo output from a 12 V rail and two clock speed modes, it supports standard 44.1/48 kHz voice and streaming audio paths. Software-mode I2C control exposes volume and diagnostics for cloud-connected product firmware.
推薦
Portable Bluetooth Speakers
For battery-powered Bluetooth speakers, the TAS5760L's 4.5 V minimum supply permits operation directly from a single lithium-ion cell at reduced output, while scaling to 21 W channels when USB or adapter powered. Class-D efficiency above 85 percent minimizes battery drain versus Class-AB alternatives. The headphone/line-output driver in the 48-pin package adds an auxiliary path without a separate DAC/amplifier IC, saving board area in compact enclosures.
推薦
Soundbars and TV Audio
In soundbars, the TAS5760L provides 42 W mono (BTL) drive for larger woofer channels or 2x21 W for stereo satellite arrays from a single 12-16 V external adapter. The I2S/TDM input accepts multichannel streams from the TV-side SoC, and the integrated digital clipper prevents driver damage at maximum volume. Two speed modes accommodate both 48 kHz and 96 kHz audio pipelines common in TV audio processing chains.
推薦
Multimedia Docking and PC Speakers
The TAS5760L suits powered PC speakers and monitor-integrated audio where a USB or I2S bridge feeds the amplifier digitally, avoiding ground-loop noise inherent in analog input amplifiers. Gain options let one hardware design span small desktop units (a few watts) and larger 2.1 systems near the 42 W mono limit. Hardware pin-strap mode enables cost-optimized designs with no host-side audio driver software development.
推薦
Automotive Infotainment Rear-Seat Audio
With its wide supply tolerance and digital input robustness, the TAS5760L architecture maps well to non-critical automotive audio zones such as rear-seat entertainment and e-call speakers, where an I2S link from the head unit avoids running long analog audio harnesses prone to noise. The family's pin-to-pin compatibility allows a single PCB to serve multiple power tiers across vehicle trim levels, reducing qualification effort for variants.
推薦
Industrial and Conference Room Audio
Conference speakers, paging horns, and intercom panels benefit from the TAS5760L's digital input: audio arrives via I2S from a network audio processor, and the integrated clipper plus gain options allow one design to cover 5 W paging drivers up to 42 W mono conference loudspeakers. The 16.4 V maximum supply works with standard industrial 12 V or 15 V rails, and software-mode I2C diagnostics support remote health monitoring in installed systems.
推薦
推薦產品摘要
工程參考資料，適用於 TAS5760LDDCA — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TAS5760MDDCA | TAS5760LMDCA | TAS5766MDCA | TAS5722LDDVA |
|---|---|---|---|---|---|
| Package | 48-HTSSOP (DCA) | 48-HTSSOP (DCA) - same | 48-HTSSOP (DCA) - same | 48-HTSSOP (DCA) - same | Different TSSOP footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Audio Input | I2S / TDM digital | I2S / TDM digital | I2S / TDM digital | I2S / TDM digital | I2S digital |
| Control Mode | Hardware + I2C software | Hardware + I2C software | Hardware + I2C software | I2C software | I2C software |
| Pin-to-Pin Compatible with TAS5760L | - | Yes (family statement) | Yes (family statement) | Yes (family statement) | No |
主要差異化特點
- Family-wide pin-to-pin compatibility across power tiers (對比TAS5760MDDCA)
- Dual control modes (hardware straps + I2C) (對比TAS5766MDCA)
- Integrated headphone/line-output driver (對比TAS5722LDDVA)
- Integrated digital clipper (對比Discrete analog-input Class-D amps)
設計說明
At 42 W mono BTL output, the 48-HTSSOP PowerPAD package dissipates meaningful heat even at Class-D efficiency. Solder the exposed pad to a substantial copper pour (2 oz. recommended) with thermal vias to inner ground planes. Per TI PowerPAD guidelines, do not leave the thermal pad floating - it is the primary electrical ground and thermal path. Verify junction temperature against the datasheet thermal impedance at your enclosure's ambient temperature.
Place PVDD decoupling (bulk electrolytic plus 0.1 uF ceramic per rail pin) as close to the PVDD pins as possible. Keep the Class-D output LC filter loop (ferrite bead + caps or LC per speaker) tight to minimize EMI. Route I2S/MCLK traces away from Class-D output nets to avoid clock jitter coupling; per TI layout guidance in the TAS5760L datasheet, ground the PowerPAD under the device first, then fan out signals.
In hardware mode, gain and speed-mode straps are latched at power-up - changing them while PVDD is present has no effect until a PDN_RESET cycle. In software mode, ensure I2C address straps (A1/A2) do not conflict with other codecs on the bus. Supplying PVDD below 4.5 V causes unreliable start-up; on battery designs, add an undervoltage lockout via the host or enable sequencing.
合規資訊
RoHS compliant per TI product page; full environmental data available via TI quality pages. Not AEC-Q100 qualified - use automotive TAS family (e.g., TAS6754-Q1) for automotive.
