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TPA0253DGQ-TPA0253DGQG4-TPA0253DGQR
1-W Mono Audio Power Amp with Headphone Drive
Stereo Head Phone Drive Mono (BTL) Signal Created by SummingLeft and Right Signals Internally Wide Power Supply Compatibility
2.5 V to 5.5 V Low Supply Current
– 3.2 mA Typical at 5 V
– 2.7 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 TPA0253 is a 1-W mono bridge-tied-load (BTL) amplifier designed to drive speakers with as low as 8-Ω
impedance. The mono signal is created by summing left and right inputs internally. The amplifier can be
reconfigured on the fly to drive two stereo single-ended (SE) signals into headphones. This makes the device
ideal for use in small notebook computers, PDAs, digital personal audio players, anyplace a mono speaker and
stereo headphones are required. From a 5-V supply, the TPA0253 can deliver 1-W of power into an 8-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 are high-impedance CMOS inputs, and can be used as summing nodes.
The TPA0253 is available in the 10-pin thermally-enhanced MSOP package (DGQ) and operates over an
ambient temperature range of –40°C to 85°C.
AVAILABLE OPTIONS The DGQ package are available taped and reeled. To order a taped and reeled part, add the
suffix R to the part number (e.g., TPA0253DGQR).
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+
