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TS4657IQT 数据表(PDF) 1 Page - STMicroelectronics |
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TS4657IQT 数据表(HTML) 1 Page - STMicroelectronics |
1 / 26 page March 2009 Rev 1 1/26 26 TS4657 Single supply stereo digital audio line driver with 2.2 Vrms capless outputs Features ■ Single 3.0 to 5.5 V supply for DAC and line driver ■ Audio line output: 2.2 Vrms for all VCC range ■ 16- to 24-bit audio data format stereo DAC, 32 to 48 kHz sample rate ■ I²S, right- or left-justified compatible digital audio interface ■ 95 dB SNR A-weighted at 48 kHz, VCC =5 V ■ 7.4 mA current consumption at VCC =3.0 V, full operation ■ Internal negative power supply to ensure ground-referenced, capless outputs ■ No external capacitor needed for the negative power supply generation ■ Integrated structure to suppress pop and click noise ■ Available in thin QFN20 4 mm x 4 mm package Applications ■ Digital set-top boxes ■ DVD players ■ Digital TVs ■ Notebooks ■ Portable audio equipment ■ Sound cards Description The TS4657 is a stereo DAC that integrates a high-performance audio line driver capable of generating a 2.2 Vrms output level from a single 3.0 to 5.5 V supply. One single supply is sufficient for the digital and analog parts of the circuit, thus eliminating the need for external regulators. The TS4657 is a low-power consumption device. It features only 22 mW power dissipation at a 3.0 V power supply in full operation. A 16-bit multi-bit sigma delta DAC is used, operating at 256xFs with oversampling digital interpolation filters. The digital audio data can be 16-to 24-bit long and sample rates from 32 to 48 kHz are supported. The output stage signal is ground-referenced by using an internal self-generated negative power supply, and as such external bulky output coupling capacitors are not necessary. The TS4657 is packaged in a small 4 x 4 mm QFN20 package, ideal for portable applications. Pin connections (top view) GNDD NC LRCLK SDAT BCLK GNDA VREGA VCCA VOUTL VOUTR 1 5 20 16 15 11 10 6 GNDD NC LRCLK SDAT BCLK GNDA VREGA VCCA VOUTL VOUTR 1 5 1 1 5 5 20 16 20 20 16 15 11 15 15 11 11 10 6 10 10 6 6 www.st.com |
类似零件编号 - TS4657IQT |
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类似说明 - TS4657IQT |
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