深圳市谷科智电子有限公司

描述

The TPA2006D1 device is a 1.45-W high efficiency filter-free class-D audio power amplifier in a 3 mm × 3 mm VSON package that requires only three external components. The SHUTDOWN pin is fully compatible with 1.8-V logic GPIO, such as are used on low-power cellular chipsets.

Features like 88% efficiency, –75-dB PSRR, improved RF-rectification immunity, and small total PCB footprint make the TPA2006D1 device ideal for cellular handsets. A fast start-up time of 1 ms with minimal pop makes the TPA2006D1 device ideal for PDA applications.

In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the TPA2006D1 device. The TPA2006D1 device allows independent gain while summing signals from separate sources, and has a low 36-μV noise floor, A-weighted.

The TPA2006D1 device has short-circuit and thermal protection.

特性Maximum Battery Life and Minimum HeatEfficiency With an 8-Ω Speaker:88% at 400 mW80% at 100 mW2.8-mA Quiescent Current0.5-μA Shutdown CurrentSHUTDOWN Pin has 1.8-V Compatible

ThresholdsCapable of Driving an

8-Ω Speaker (2.5 V ≤ VDD ≤ 5.5 V) and a

4-Ω Speaker (2.5 V ≤ VDD ≤ 4.2 V)Only Three External ComponentsOptimized PWM Output Stage Eliminates LC

Output FilterInternally Generated 250-kHz Switching

Frequency Eliminates Capacitor and ResistorImproved PSRR (–75 dB) and Wide Supply

Voltage (2.5 V to 5.5 V) Eliminates Need for a

Voltage RegulatorFully Differential Design Reduces RF

Rectification and Eliminates Bypass CapacitorImproved CMRR Eliminates Two Input

Coupling CapacitorsSpace-Saving 3 mm x 3 mm VSON Package

(DRB)