TPA2000D1 - 2W 单声道 D 类音频放大器

TPA2000D1是TI德州仪器公司的一款扬声器放大器（AB类/D类）产品，TPA2000D1是2W 单声道 D 类音频放大器，本站介绍了TPA2000D1的封装应用图解、特点和优点、功能等，并给出了与TPA2000D1相关的TI元器件型号供参考。

TPA2000D1 - 2W 单声道 D 类音频放大器 - 扬声器放大器（AB类/D类） - 低功耗放大器 - 德州仪器

产品描述

The TPA2000D1 is a 2-W mono bridge-tied-load (BTL) class-D amplifier designed to drive a speaker with at least 4- impedance. The amplifier uses TI’s third generation modulation technique, which results in improved efficiency and SNR. It also allows the device to be connected directly to the speaker without the use of the LC output filter commonly associated with class-D amplifiers (this results in EMI which must be shielded at the system level). These features make the device ideal for use in devices where high-efficiency is needed to extend battery run time.

The gain of the amplifier is controlled by two input terminals, GAIN1, and GAIN0. This allows the amplifier to be configured for a gain of 6, 12, 18, and 23.5 dB. The differential input terminals are high-impedance CMOS inputs, and can be used as summing nodes.

The class-D BTL amplifier includes depop circuitry to reduce the amount of turnon pop at power up, and when cycling SHUTDOWN\.

The TPA2000D1 is available in the 16-pin TSSOP and MicroStar Junior™ BGA packages that drive 2 W of continuous output power into a 4- load. TPA2000D1 operates over an ambient temperature range of –40°C to 85°C.

产品特性

Modulation Scheme Optimized to Operate Without a Filter
4 mm × 4 mm MicroStar Junior BGA and TSSOP Package Options
2 W Into a 4- Speaker (THD+N<1%)
<0.2% THD+N at 1.5 W, 1 kHz, Into a 4- Load
Extremely Efficient Third Generation 5-V Class-D Technology:
- Low-Supply Current (No Filter) ...4 mA
- Low-Supply Current (Filter) . . . 7.5 mA
- Low-Shutdown Current . . . 0.05 µA
- Low-Noise Floor ...40 µVRMS(No-Weighting Filter)
- Maximum Efficiency Into 8 , 75 – 85 %
- 4 Internal Gain Settings ...6 – 23.5 dB
- PSSR . . . –77 dB
Integrated Depop Circuitry
Short-Circuit Protection (Short to Battery, Ground, and Load)
APPLICATIONS
- High-Efficiency For Extended Battery Run Time

MicroStar Junior is a trademark of Texas Instruments.

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