The TAS2557 device is a state-of-the-art Class-D audio amplifierwhich is a full system on a Chip (SoC). The device features a ultra low-noise audio DAC and Class-Dpower amplifier which incorporates speaker voltage and current sensing feedback. An on-chip,low-latency DSP supports Texas Instruments SmartAmp speaker protection algorithms to maximizesloudness while maintaining safe speaker conditions.
The device can be used easily with any processor with an I2S output and stereoimplementations are possible when using two TAS2557 devices. Separate tuningfor different speakers is supported allowing customers to add value while maintaining form factordesigns. Additionally, the TAS2557 supports separate voice and audio tuningdynamically with ultra-low 15.9 µV ICN regardless of mode of operation making receiver/speakerimplementations possible.
A Class-H boost converter generates the Class-D amplifier supply rail. When the audiosignal only requires a lower Class-D output power, the boost improves system efficiency bydeactivating and connecting VBAT directly to the Class-D amplifier supply.When higher audio output power is required, the multi-level boost quickly activates tracking thesignal to provide the additional voltage to the load.
Products containing the "TAS2557" keyword are: TAS2557 , TAS2557EVM , TAS2557EVM , TAS2557YZR , TAS2557YZR , TAS2557YZT , TAS2557YZTAll trademarks are the property of their respective owners.
Status | ACTIVE |
SubFamily | Speaker amps |
Audio input type | Digital Input |
Architecture | Class-D Boosted^Smart Amp |
Speaker Channels | Mono |
Power stage supply | 5.5 |
Output power | 5.7 |
Load | 4 |
SNR | 111 |
THD + N @ 1 kHz | 0.0035 |
Iq | 3.9 |
Control interface | I2C^SPI |
Closed/open loop | Closed |
Approx. price | 1.50 | 1ku |
Analog supply | 5.5 |
Power to parallel bridge tied load | |
Sampling Rate | 96 |
PSRR | 110 |
Operating temperature range | -40 to 85 |
Rating | Catalog |