FEATURES
• Filter-Free Mono Class-D Speaker Amp
• GAIN Pin Selects Between 6 dB and 12 dB
• 3.2 W into 4 Ω from 5 V supply at 10% THD+N
• Powerful Mono Class-D Speaker Amplifier
– 1% at 1.4 W into 8 Ω from 5 V Supply
– 1% at 2.5 W into 4 Ω from 5 V Supply
• Integrated Image Reject Filter for DAC Noise
Reduction
• Low Output Noise of 20 μV
• Low Quiescent Current of 1.5 mA
• Auto-Recovering Short-Circuit Protection
• Thermal-Overload Protection
• 9-Ball 1,21 mm × 1,16 mm 0,4 mm Pitch WCSP

APPLICATIONS
• Wireless or Cellular Handsets and PDAs
• Portable Navigation Devices
• General Portable Audio Devices

DESCRIPTION
The TPA2038D1 is a 3.2 W into 4-ohm (10% THD) high efficiency filter-free class-D audio power
amplifier. The GAIN pin sets gain to either 6 dB or
12 dB.
Features like 95% efficiency, 1.5 mA quiescent
current, 0.5 μA shutdown current, 81 dB PSRR,
20 μV output noise, and improved RF immunity make
the TPA2038D1 class-D amplifier ideal for cellular
handsets. A start-up time is within 4 ms with no turn-
on pop.
The TPA2038D1 is available in a 1.21 mm x
1.16 mm, 0.4 mm pitch wafer chip scale package
(WCSP).