TPA6205A1 - 1.25-W Mono, Fully Differential, Class-AB Audio Amp w/ 1.8V Compatible Shutdown Voltage (TPA6205)

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.

• 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 PowerPAD™ MSOP (DGN)
• Available in a 2-mm ™ 2-mm MicroStar Junior™
  BGA Package (ZQV)