Описание
The TPA0222 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable ofdelivering 2 W of continuous RMS power per channel into 3-? loads. This device minimizes the number ofexternal components needed, simplifying the design, and freeing up board space for other features. Whendriving 1 W into 8-? speakers, the TPA0222 has less than 0.5% THD+N across its specified frequency range.Included within this device is integrated depop circuitry that virtually eliminates transients that cause noise inthe speakers.Amplifier gain is internally configured and controlled by two terminals (GAIN0 and GAIN1). BTL gain settingsof 2, 6, 12, and 24 V/V are provided, while SE gain is always configured as 1 V/V for headphone drive. An internalinput MUX allows two sets of stereo inputs to the amplifier. The HP/LINE terminal allows the user to select whichMUX input is active regardless of whether the amplifier is in SE or BTL mode. In notebook applications, whereinternal speakers are driven as BTL and the line outputs (often headphone drive) are required to be SE, theTPA0222 automatically switches into SE mode when the SE/BTL input is activated, and reduces the gain to1 V/V.The TPA0222 consumes only 18 mA of supply current during normal operation. A miserly shutdown modereduces the supply current to less than 150 µA.The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable onlyin TO-220-type packages. Thermal impedances of approximately 35°C/W are truly realized in multilayer PCBapplications. This allows the TPA0222 to operate at full power into 8-? loads at an ambient temperature of 85°C.
- Compatible With PC 99 Desktop Line-Out Into 10-k? Load
- Compatible With PC 99 Portable Into 8-? Load
- Internal Gain Control, Which Eliminates External Gain-Setting Resistors
- 2-W/Ch Output Power Into 3-? Load
- Input MUX Select Terminal
- PC-Beep Input
- Depop Circuitry
- Stereo Input MUX
- Fully Differential Input
- Low Supply Current and Shutdown Current Surface-Mount Power Packaging 24-Pin TSSOP PowerPAD?
