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TS4961T Arkusz danych(PDF) 1 Page - STMicroelectronics |
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TS4961T Arkusz danych(HTML) 1 Page - STMicroelectronics |
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1 / 49 page  September 2008 Rev 1 1/49 49 TS4961T Mono class D audio power amplifier with dedicated analog switch Features ■ Wide operating voltage range from VCC = 2.4V to 4.3V ■ Audio amplifier standby mode active low ■ Output power: 1.6 W at 4.2 V or 0.75 W at 3.0 V into 4 Ω with 1% THD+N maximum ■ Output power: 0.95 W at 4.2 V or 0.45 W at 3.0 V into 8 Ω with 1% THD+N maximum ■ Adjustable gain via external resistors ■ Low current consumption 2 mA at 3 V ■ Efficiency: 88% typical ■ Signal-to-noise ratio: 85 dB typical ■ PSRR: 63 dB typical at 217 Hz with 6 dB gain ■ PWM base frequency: 250 kHz ■ Low pop and click noise ■ Dual Power SPST with separated control ■ Ultra-high off-isolation on analog switch: -80 dB typical from 20 Hz to 20 kHz Applications ■ Cellular telephones ■ PDAs ■ Notebook PCs Description The TS4961T is a smart combination of one mono class D audio power amplifier and a high-speed CMOS low-voltage dual power analog SPST. One of the key functions of this device is the switch mode of the various audio signals coming from the codec or baseband through the loudspeaker. It can drive up to 1.6 W into a 4 Ω load and 0.95 W into an 8 Ω load. It achieves an outstanding efficiency of up to 88% typical. The audio amplifying gain of the device can be controlled via two external gain-setting resistors. It is designed to operate from 2.4 to 4.3 V, making this device ideal for portable applications. QFN 16 3 x 3 mm TS4961TIQT pinout www.st.com Obsolete Product(s) - Obsolete Product(s) |
Podobny numer części - TS4961T |
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Podobny opis - TS4961T |
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