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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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TAS2781RYYR 데이터시트(PDF) 1 Page - Texas Instruments |
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TAS2781RYYR 데이터시트(HTML) 1 Page - Texas Instruments |
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1 / 90 page  TAS2781 24-V Class-D Amplifier with Real Time Integrated Speaker Protection and Audio Processing 1 Features Key Features • Integrated DSP for audio processing • 24-V Supply for class-d output stage • Y-Bridge multi-level supply architecture • Hybrid-pro external boost control algorithm • Ultrasonic output support up to 40 kHz Output power: • 25 W, 1% THD+N (4 Ω, 18 V) • 30 W Maximum output power, 10% THD+N Efficiency (1% THDN) and power consumption • 82% at 1W, 4 Ω, PVDDH = 12 V, PVDDL = 3.8 V • 83% at 1W, 8 Ω, PVDDH = 18 V, PVDDL = 5 V • 84% at 1W, 4 Ω, PVDDH = 18 V, PVDDL = 5 V • 90% at 15W, 4 Ω, PVDDH = 18 V, PVDDL = 5 V • 93% at 15W , 8 Ω, PVDDH = 18 V, PVDDL = 5 V • <0.5 μA in Hardware Shutdown Mode Power supplies and management: • AVDD: 1.8 V • IOVDD: 1.8 V/ 3.3 V • PVDDL: 2.7 V to 5.5 V • PVDDH: 3 V to 24 V Interfaces and Control: • SDOUT for echo cancellation • I2S/TDM: 8 channels of 32 bits up to 192 KSPS • I2C with fast mode+ or SPI • Inter-chip communication bus • 16 kHz to 192 kHz sample rates Advanced DSP audio processing: • Real-time IV-sense for speaker protection • Dynamic range compressor • Brownout protection with power limiter • Multi-channel balancing communication Protection and EMI: • Over power and low battery protection • PVDDH/ PVDDL supply tracking limiters • Thermal and over current protections • Thermal foldback • Post filter feedback and slew rate control 2 Applications • Laptop and Desktop Computers • Smart Speakers • Tablets and Handhelds • Wireless Speakers 3 Description The TAS2781 is a mono, digital input Class-D audio amplifier optimized for efficiently driving high peak power into loudspeakers. The Class-D amplifier is capable of delivering 25 W of continuous power into a 4 Ω load with less than 1% THD+N at a supply voltage of 18 V. The broad voltage input range and the high output power makes this amplifier versatile enough to work with battery or line powered systems. An on-chip DSP supports Texas Instruments Smart Amp speaker protection algorithm. The integrated speaker voltage and current sense provides for real- time monitoring of loudspeakers. Y-Bridge power architecture improves amplifier efficiency by internally selecting the supplies for optimal headroom. Brownout prevention scheme with adjustable threshold allows reducing the gain in signal path when the supply drops. The Hybrid-Pro algorithm allows user to optimize efficiency and improve battery life by controlling the external power supply. Up to eight TAS2781 devices can share a common bus via I2S/TDM and I2C/SPI interfaces. The TAS2781 is available in a 30 pin HR-QFN package for a compact PCB footprint. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TAS2781 HR QFN 4 mm x 3.5 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Schematic TAS2781 SLOSE86B – JULY 2022 – REVISED JULY 2023 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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