1FEATURES

• Powerful Mono Class-D Speaker Amplifier

– 3.24 W (4 Ω, 5 V, 10% THDN)

– 2.57 W (4 Ω, 5 V, 1% THDN)

– 1.80 W (8 Ω, 5 V, 10% THDN)

– 1.46 W (8 Ω, 5 V, 1% THDN)

• +6 dB Fixed Gain

• Integrated Image Reject Filter for DAC Noise

Reduction

• Low Output Noise of 20 mV

• Low Quiescent Current of 1.5 mA

• Differential Input Impedance of 300 kΩ

• Auto-Recovering Short-Circuit Protection

• Thermal-Overload Protection

• Filter-Free Mono Class-D Amp

• 9-Ball 1,21 mm × 1,16 mm 0,4mm Pitch WCSP

APPLICATIONS

• Wireless or Cellular Handsets and PDAs

• Portable Navigation Devices

• General Portable Audio Devices

DESCRIPTION

The TPA2037D1 is a 3.2 W high efficiency filter-free class-D audio power amplifier (class-D amp) with

6 dB of fixed gain in a 1.21 mm x 1.16 mm wafer chip

scale package (WCSP). The device requires only one

external component.

Features like 95% efficiency, 1.5 mA quiescent

current, 0.1 mA shutdown current, 81-dB PSRR,

20 mV output noise, and improved RF immunity make

the TPA2037D1 class-D amplifier ideal for cellular

handsets. A start-up time of 4 ms with no audible pop

makes the TPA2037D1 ideal for PDA and

smart-phone applications.