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TPA0223DGQR
2-W Mono Audio Power Amp with Headphone Drive
Stereo Head Phone Drive Separate Inputs for the Mono (BTL) Signaland Stereo (SE) Left/Right Signals Wide Power Supply Compatibility
3 V to 5 V Meets PC99 Desktop Specs (Target) Low Supply Current
– 11 mA Typical at 5 V
– 10 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
Packaging
descriptionThe TPA0223 is a 2-W mono bridge-tied-load (BTL) amplifier designed to drive speakers with as low as 4-Ω
impedance. The amplifier can be reconfigured on the fly to drive two stereo single-ended (SE) signals into head
phones. This makes the device ideal for small notebook computers, PDAs, digital personal audio players,
anyplace a mono speaker and stereo headphones are required. From a 5-V supply, the TPA0223 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 resistorV = – 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, high-impedance CMOS inputs, can be used as summing nodes.
The TPA0223 is available in the 10-pin thermally-enhanced MSOP package (DGQ) and operates over an
ambient temperature range of –40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
BYPASS
RIN
ST/MN
RO/MO+
