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TS4995 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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TS4995 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
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1 / 26 page  March 2008 Rev 3 1/26 26 TS4995 1.2 W fully differential audio power amplifier with selectable standby and 6 dB fixed gain Features ■ Differential inputs ■ 90 dB PSRR @ 217 Hz with grounded inputs ■ Operates from VCC = 2.5 V to 5.5 V ■ 1.2 W rail-to-rail output power @ VCC=5 V, THD+N=1%, F=1 kHz, with an 8 Ω load ■ 6 dB integrated fixed gain ■ Ultra-low consumption in standby mode (10 nA) ■ Selectable standby mode (active low or active high) ■ Ultra-fast startup time: 10 ms typ. at VCC=3.3 V ■ Available in 9-bump flip chip (300 mm bump diameter) ■ Ultra-low pop and click Applications ■ Mobile phones (cellular / cordless) ■ PDAs ■ Laptop / notebook computers ■ Portable audio devices Description The TS4995 is an audio power amplifier capable of delivering 1.2 W of continuous RMS output power into an 8 Ω load at 5 V. Thanks to its differential inputs, it exhibits outstanding noise immunity. An external standby mode control reduces the supply current to less than 10 nA. A STBY MODE pin allows the standby pin to be active high or low. An internal thermal shutdown protection is also provided, making the device capable of sustaining short-circuits. The TS4995 features an internal fixed gain at 6dB which reduces the number of external components on the application board. The device is equipped with common mode feedback circuitry allowing outputs to be always biased at VCC/2 regardless of the input common mode voltage. The TS4995 is specifically designed for high quality audio applications such as mobile phones and requires few external components. TS4995 - Flip chip 9 Pin connections (top view) V IN+ V O- V CC V IN- V O+ Gnd 1 2 3 76 5 4 8 Bypass Stdby Stdby Mode 9 V IN+ V O- V CC V IN- V O+ Gnd 1 2 3 76 5 4 8 Bypass Stdby Stdby Mode 9 www.st.com |
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