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


Package | PIN: DGN | 8
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $0.84
10-24 $0.75
25-99 $0.70
100-249 $0.60
250-499 $0.55
500-749 $0.45
750-999 $0.36
1000+ $0.32


  • 1.25 W Into 8-Ω From a 5-V Supply at THD = 1%
  • 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
    • Fully Differential Design Reduces RF
    • 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)

Texas Instruments  TPA6205A1DGNR

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.