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Mono Class-AB Audio Amplifier with Mono Headphone Drive


Package | PIN: DGN | 8
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $1.96
10-24 $1.76
25-99 $1.64
100-249 $1.42
250-499 $1.31
500-749 $1.10
750-999 $0.91
1000+ $0.83


  • 2 W Into 4 Ω From 5-V Supply
  • 0.6 W Into 4 Ω From 3-V Supply
  • Wide Power Supply Compatibility: 3 V to 5 V
  • Low Supply Current:
    • 4 mA Typical at 5 V
    • 4 mA Typical at 3 V
  • Shutdown Control: 1 µA Typical
  • Shutdown Pin Is TTL Compatible
  • –40°C to 85°C Operating Temperature Range
  • Space-Saving, Thermally-Enhanced MSOP-PowerPAD™ Packaging

Texas Instruments  TPA0211DGNR

The TPA0211 is a 2-W mono bridge-tied-load (BTL) amplifier designed to drive speakers with as low as 4-Ω impedance. The device is ideal for small wireless communicators, notebook PCs, PDAs, anyplace a mono speaker and stereo headphones are required. From a 5-V supply, the TPA0211 can deliver 2 W of power into a 4-Ω speaker.

The gain of the input stage is set by the user-selected input resistor and a 50-kΩ internal feedback resistor (AV = –RF / RI). The power stage is internally configured with a gain of –1.25 V/V in SE mode, and –2.5 V/V in BTL mode. Thus, the overall gain of the amplifier is –62.5 kΩ/RI in SE mode and –125 kΩ/RI in BTL mode. The input terminals are high-impedance CMOS inputs, and can be used as summing nodes.

The TPA0211 is available in the 8-pin thermally-enhanced MSOP-PowerPAD package (DGN) and operates over an ambient temperature range of –40°C to 85°C.