TPA6205A1DGNR Audio Power Amplifier IC Audio Amplifiers 1.25W Mono Fully Diff ClassAB Aud Amp

1 Features

• 1.25 W Into 8-Ω From a 5-V Supply at THD = 1% (Typical)

• Shutdown Pin has 1.8-V Compatible Thresholds

• Low Supply Current: 1.7 mA Typical

• Shutdown Current < 10 μA

• Only Five External Components

  • – Improved PSRR (90 dB) and Wide Supply Voltage (2.5 V to 5.5 V) for Direct Battery Operation

  • – Fully Differential Design Reduces RF Rectification

  • – Improved CMRR Eliminates Two Input Coupling Capacitors

  • – C(BYPASS) Is Optional Due to Fully Differential Design and High PSRR

• Available in 3-mm × 3-mm QFN Package (DRB)

• Available in an 8-Pin PowerPADTM MSOP (DGN)

• Available in a 2-mm × 2-mm MicroStar JuniorTM BGA Package (ZQV)

2 Applications

3 Description

The TPA6205A1 device is a 1.25-W mono fully differential amplifier designed to drive a speaker with at least 8-Ω impedance while consuming less than 37 mm2 (ZQV package option) total printed-circuit-board (PCB) area in most applications. This device operates from 2.5 V to 5.5 V, drawing only 1.7 mA of quiescent supply current. The TPA6205A1 is available in the space-saving 2-mm × 2-mm MicroStar Junior BGA package, and the space saving 3-mm × 3-mm QFN (DRB) package.

Features like 85-dB PSRR from 90 Hz to 5 kHz, improved RF-rectification immunity, and small PCB area makes the TPA6205A1 ideal for wireless handsets. A fast start-up time of 4s with minimal pop makes the TPA6205A1 ideal for PDA applications.

Device Information