Texas Instruments

The TPA0152 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of delivering 2.8 W of continuous RMS power per channel into 3-loads. This device minimizes the number of external components needed, which simplifies the design and frees up board space for other features. When driving 1 W into 8-speakers, the TPA0152 has less than 0.3% THD+N across its specified frequency range. The integrated depop circuitry virtually eliminates transients that cause noise in the speakers. The overall gain of the amplifier is controlled digitally by the UP\ and DOWN\ terminals. At power up, the gain is set at the lowest level which is -85 dB. It can then be adjusted to any of 31 discrete steps by pulling the voltage down at the desired pin to logic low. The gain is adjusted in the initial stage of the amplifier as opposed to the power output stage. As a result, the THD changes very little over all volume levels. An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal speakers are driven as BTL and the line outputs (often headphone drive) are required to be SE, the TPA0152 automatically switches into SE mode when the SE/BTL\ input is activated. This effectively reduces the gain by 6 dB. The TPA0152 consumes only 10 mA of supply current during normal operation. A shutdown mode is included that reduces the supply current to less than 150 µA. The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable only in TO-220-type packages. Thermal impedances of approximately 35°C/W are truly realized in multilayer PCB applications. This allows the TPA0152 to operate at full power into 8-loads at ambient temperatures of 85°C. The TPA0152 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of delivering 2.8 W of continuous RMS power per channel into 3-loads. This device minimizes the number of external components needed, which simplifies the design and frees up board space for other features. When driving 1 W into 8-speakers, the TPA0152 has less than 0.3% THD+N across its specified frequency range. The integrated depop circuitry virtually eliminates transients that cause noise in the speakers. The overall gain of the amplifier is controlled digitally by the UP\ and DOWN\ terminals. At power up, the gain is set at the lowest level which is -85 dB. It can then be adjusted to any of 31 discrete steps by pulling the voltage down at the desired pin to logic low. The gain is adjusted in the initial stage of the amplifier as opposed to the power output stage. As a result, the THD changes very little over all volume levels. An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal speakers are driven as BTL and the line outputs (often headphone drive) are required to be SE, the TPA0152 automatically switches into SE mode when the SE/BTL\ input is activated. This effectively reduces the gain by 6 dB. The TPA0152 consumes only 10 mA of supply current during normal operation. A shutdown mode is included that reduces the supply current to less than 150 µA. The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable only in TO-220-type packages. Thermal impedances of approximately 35°C/W are truly realized in multilayer PCB applications. This allows the TPA0152 to operate at full power into 8-loads at ambient temperatures of 85°C.

The TPA0162 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of delivering 2.8 W of continuous RMS power per channel into 3-loads. This device minimizes the number of external components needed, which simplifies the design and frees up board space for other features. When driving 1 W into 8-speakers, the TPA0162 has less than 0.22% THD+N across its specified frequency range. The integrated depop circuitry virtually eliminates transients that cause noise in the speakers. The overall gain of the amplifier is controlled digitally by the UP and DOWN terminals. At power up, the gain is set at the lowest level, –85 dB. It can then be adjusted to any of 31 discrete steps by pulling the voltage down at the desired pin to logic low. The gain is adjusted in the initial stage of the amplifier as opposed to the power output stage. As a result, the THD changes very little over all volume levels. An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal speakers are driven as BTL and the line outputs (often headphone drive) are required to be SE, the TPA0162 automatically switches into SE mode when the SE/BTL\ input is activated. This effectively reduces the gain by 6 dB. The TPA0162 consumes only 20 mA of supply current during normal operation. A shutdown mode is included that reduces the supply current to less than 150 µA. The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable only in TO-220-type packages. Thermal impedances of approximately 35°C/W are truly realized in multilayer PCB applications. This allows the TPA0162 to operate at full power into 8-loads at ambient temperatures of 85°C. The TPA0162 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of delivering 2.8 W of continuous RMS power per channel into 3-loads. This device minimizes the number of external components needed, which simplifies the design and frees up board space for other features. When driving 1 W into 8-speakers, the TPA0162 has less than 0.22% THD+N across its specified frequency range. The integrated depop circuitry virtually eliminates transients that cause noise in the speakers. The overall gain of the amplifier is controlled digitally by the UP and DOWN terminals. At power up, the gain is set at the lowest level, –85 dB. It can then be adjusted to any of 31 discrete steps by pulling the voltage down at the desired pin to logic low. The gain is adjusted in the initial stage of the amplifier as opposed to the power output stage. As a result, the THD changes very little over all volume levels. An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal speakers are driven as BTL and the line outputs (often headphone drive) are required to be SE, the TPA0162 automatically switches into SE mode when the SE/BTL\ input is activated. This effectively reduces the gain by 6 dB. The TPA0162 consumes only 20 mA of supply current during normal operation. A shutdown mode is included that reduces the supply current to less than 150 µA. The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable only in TO-220-type packages. Thermal impedances of approximately 35°C/W are truly realized in multilayer PCB applications. This allows the TPA0162 to operate at full power into 8-loads at ambient temperatures of 85°C.

The TPA0202 is a stereo audio power amplifier in a 24-pin TSSOP thermal package capable of delivering greater than 2 W of continuous RMS power per channel into 3-loads with a 3.3-V supply voltage. The TPA0202 has integrated depop circuitry that virtually eliminates transients that cause noise in the speakers during power up and when using the mute and shutdown modes. Amplifier gain is externally configured by means of two resistors per input channel and does not require external compensation for settings of 2 to 20 in BTL mode (1 to 10 in SE mode). An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal speakers are driven as BTL and the line (often headphone drive) outputs are required to be SE, the TPA0202 automatically switches into SE mode when the SE/BTL\ input is activated. Using the TPA0202 to drive line outputs up to 700 mW/channel into external 3-loads is ideal for small non-powered external speakers in portable multimedia systems. The TPA0202 also features a shutdown function for power sensitive applications, holding the supply current at 5 uA. The PowerPAD packageloads, the operating ambient temperature increases to 100°C. The TPA0202 is a stereo audio power amplifier in a 24-pin TSSOP thermal package capable of delivering greater than 2 W of continuous RMS power per channel into 3-loads with a 3.3-V supply voltage. The TPA0202 has integrated depop circuitry that virtually eliminates transients that cause noise in the speakers during power up and when using the mute and shutdown modes. Amplifier gain is externally configured by means of two resistors per input channel and does not require external compensation for settings of 2 to 20 in BTL mode (1 to 10 in SE mode). An internal input MUX allows two sets of stereo inputs to the amplifier. In notebook applications, where internal speakers are driven as BTL and the line (often headphone drive) outputs are required to be SE, the TPA0202 automatically switches into SE mode when the SE/BTL\ input is activated. Using the TPA0202 to drive line outputs up to 700 mW/channel into external 3-loads is ideal for small non-powered external speakers in portable multimedia systems. The TPA0202 also features a shutdown function for power sensitive applications, holding the supply current at 5 uA. The PowerPAD packageloads, the operating ambient temperature increases to 100°C.

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/RIin SE mode and –125 kΩ/RIin 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. 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/RIin SE mode and –125 kΩ/RIin 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.