Texas Instruments (TI) today announced a family of four digital input closed-loop I2S amplifiers for mid-range power stereo audio such as TVs, sound bars, portable docking stations, Bluetooth® speakers and audio products for the automotive aftermarket Application requirements. The TAS5760xx devices offer high switching frequency, helping designers reduce overall solution size and bill of materials (BOM) costs by using smaller output filter components. Not only do they support 20W per channel of continuous power without heat sinks, but they also achieve the industry's best performance specifications, including 1 W 0.03% THD+N, -92dB crosstalk, and 66uV idle channel noise.
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The TAS5760xx is available in four pin-compatible 48-pin versions, with the TAS5760MD and TAS5760LD providing headphone amplifier/line drivers, while the TAS5760M and TAS5760L are non-headphone versions. For customers who require smaller sizes, the TAS5760M and TAS5760L are also available in a 9 mm x 6 mm, 32-pin package.
Key features and benefits of the TAS5760xx:
Highest mid-range power performance: its industry-best THD+N, crosstalk and idle noise performance, plus a closed-loop architecture that provides 80 dB of excellent power supply rejection ratio (PSRR), allowing the amplifier to remain even when battery output fluctuates Constant power. In addition, for systems with variable power levels such as portable docking stations and Bluetooth speakers, a lower cost power supply design system can be used;
· Optimal heat dissipation: 120 mOhm's industry's lowest RDS(on) provides excellent thermal performance for consumer audio products currently operating at high ambient temperatures;
· Reduce BOM cost and reduce solution size: A high switching frequency of 1.2 MHz not only reduces electromagnetic interference (EMI), but also reduces BOM cost by using smaller output filters, reducing overall solution size;
· The widest range of power supplies: Supports a wide range of voltages from 4.5V to 26.4V, helping battery and AC line operation to meet the needs of most mid-range power applications;
Design Flexibility: Supports multi-channel system design with highly flexible configuration options available in software (I2C) and hardware (GPIO pin) control modes. A variety of amplifiers can be combined with the PCM1808 stereo analog-to-digital converter (ADC) to achieve a 99dB signal-to-noise ratio (SNR), creating a high-performance audio signal chain.
Tools and support
The TAS5760xxEVM can be ordered immediately. The evaluation board includes an easy-to-use ControlConsole graphics development kit that simplifies the evaluation, configuration, and debugging of audio products. The ControlConsole graphical user interface (GUI) helps enable rapid evaluation of all TAS5760xx stereo amplifier functions, reducing product development time. In addition, the IBIS model can be used to verify board signal integrity requirements.
Availability
A variety of new closed-loop I2S amplifiers are available now in a 12 mm × 8 mm, 48-pin TSSOP package:
· TAS5760MD: integrated headphones, the maximum power supply voltage is 26.4V;
· TAS5760M: no headphones, the maximum power supply voltage is 26.4V;
· TAS5760LD: integrated headphones, the maximum power supply voltage is 16.5 V;
· TAS5760L: No headphones, the maximum supply voltage is 16.5 V.
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