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TPA2008D2

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具有直流音量控制的 3W 立体声、模拟输入 D 类音频放大器

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TPA2008D2

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产品详情

Audio input type Analog Input Architecture Class-D Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 4.5 Load (min) (Ω) 3 Output power (W) 3 SNR (dB) 96 THD + N at 1 kHz (%) 0.3 Iq (typ) (mA) 7 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 2.5 Analog supply voltage (max) (V) 5.5 PSRR (dB) 70 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 4.5 Load (min) (Ω) 3 Output power (W) 3 SNR (dB) 96 THD + N at 1 kHz (%) 0.3 Iq (typ) (mA) 7 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 2.5 Analog supply voltage (max) (V) 5.5 PSRR (dB) 70 Operating temperature range (°C) -40 to 85
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4
  • 3 W Per Channel into 3- Speakers (THD+N = 10%)
    • < 0.045% THD at 1.5 W, 1 kHz, 3- Load
  • DC Volume Control With 2-dB Steps From –38 dB to 20 dB
  • Filter Free Modulation Scheme Operates Without a Large and Expensive LC Output Filter
  • Extremely Efficient Third Generation 5-V Class-D Technology
    • Low Supply Current, 7 mA
    • Low Shutdown Control, 1 µA
    • Low Noise Floor, –80 dBV
    • Maximum Efficiency into 3 , 78%
    • Maximum Efficiency into 8 , 88%
    • PSRR, –70 dB
  • Integrated Depop Circuitry
  • Operating Temperature Range, –40°C to 85°C
  • Space-Saving, Surface Mount PowerPAD™ Package
  • APPLICATIONS
    • LCD Projectors
    • LCD Monitors
    • Powered Speakers
    • Battery Operated and Space Constrained Systems

PowerPAD is a trademark of Texas Instruments.
  • 3 W Per Channel into 3- Speakers (THD+N = 10%)
    • < 0.045% THD at 1.5 W, 1 kHz, 3- Load
  • DC Volume Control With 2-dB Steps From –38 dB to 20 dB
  • Filter Free Modulation Scheme Operates Without a Large and Expensive LC Output Filter
  • Extremely Efficient Third Generation 5-V Class-D Technology
    • Low Supply Current, 7 mA
    • Low Shutdown Control, 1 µA
    • Low Noise Floor, –80 dBV
    • Maximum Efficiency into 3 , 78%
    • Maximum Efficiency into 8 , 88%
    • PSRR, –70 dB
  • Integrated Depop Circuitry
  • Operating Temperature Range, –40°C to 85°C
  • Space-Saving, Surface Mount PowerPAD™ Package
  • APPLICATIONS
    • LCD Projectors
    • LCD Monitors
    • Powered Speakers
    • Battery Operated and Space Constrained Systems

PowerPAD is a trademark of Texas Instruments.

The TPA2008D2 is a third generation 5-V class-D amplifier from Texas Instruments. Improvements to previous generation devices include: dc volume control, lower supply current, lower noise floor, higher efficiency, smaller packaging, and fewer external components. Most notably, a new filter-free class-D modulation technique allows the TPA2008D2 to directly drive the speakers, without needing a low-pass output filter consisting of two inductors and three capacitors per channel. Eliminating this output filter saves approximately 30% in system cost and 75% in PCB area.

The improvements and functionality make this device ideal for LCD projectors, LCD monitors, powered speakers, and other applications that demand more battery life, reduced board space, and functionality that surpasses currently available class-D devices.

A chip-level shutdown control limits total supply current to 1 µA, making the device ideal for battery-powered applications. Protection circuitry increases device reliability: thermal and short circuit. Undervoltage shutdown saves battery power for more essential devices when battery voltage drops to low levels.

The TPA2008D2 is available in a 24-pin TSSOP PowerPAD™ package.

The TPA2008D2 is a third generation 5-V class-D amplifier from Texas Instruments. Improvements to previous generation devices include: dc volume control, lower supply current, lower noise floor, higher efficiency, smaller packaging, and fewer external components. Most notably, a new filter-free class-D modulation technique allows the TPA2008D2 to directly drive the speakers, without needing a low-pass output filter consisting of two inductors and three capacitors per channel. Eliminating this output filter saves approximately 30% in system cost and 75% in PCB area.

The improvements and functionality make this device ideal for LCD projectors, LCD monitors, powered speakers, and other applications that demand more battery life, reduced board space, and functionality that surpasses currently available class-D devices.

A chip-level shutdown control limits total supply current to 1 µA, making the device ideal for battery-powered applications. Protection circuitry increases device reliability: thermal and short circuit. Undervoltage shutdown saves battery power for more essential devices when battery voltage drops to low levels.

The TPA2008D2 is available in a 24-pin TSSOP PowerPAD™ package.
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类型 标题 下载最新的英语版本 日期
* 数据表 TPA2008D2: 3-W Stereo Class-D Audio Power Amplifier w/DC Vol Control 数据表 (Rev. C) 2004年 5月 20日
应用手册 Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 2019年 8月 26日
应用手册 AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 2019年 6月 27日
应用手册 AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 2013年 5月 1日
用户指南 TPA2008D2EVM - User Guide (Rev. A) 2004年 5月 14日

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