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TS4994IQT データシート(PDF) 1 Page - Texas Instruments |
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TS4994IQT データシート(HTML) 1 Page - Texas Instruments |
1 / 35 page December 2006 Rev 6 1/35 35 TS4994 1W differential input/output audio power amplifier with selectable standby Features ■ Differential inputs ■ Near-zero pop & click ■ 100dB PSRR @ 217Hz with grounded inputs ■ Operating range from VCC = 2.5V to 5.5V ■ 1W rail-to-rail output power @ VCC =5V, THD = 1%, F = 1kHz, with 8 Ωload ■ 90dB CMRR @ 217Hz ■ Ultra-low consumption in standby mode (10nA) ■ Selectable standby mode (active low or active high) ■ Ultra fast startup time: 15ms typ. ■ Available in DFN10 3x3 (0.5mm pitch) & MiniSO-8 ■ All lead-free packages Description The TS4994 is an audio power amplifier capable of delivering 1W of continuous RMS output power into an 8 Ωload @ 5V. Due to its differential inputs, it exhibits outstanding noise immunity. An external standby mode control reduces the supply current to less than 10nA. An STBY MODE pin allows the standby to be active HIGH or LOW (except in the MiniSO-8 version). An internal thermal shutdown protection is also provided, making the device capable of sustaining short-circuits. 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 TS4994 is designed for high quality audio applications such as mobile phones and requires few external components. Applications ■ Mobile phones (cellular / cordless) ■ Laptop / notebook computers ■ PDAs ■ Portable audio devices Order codes TS4994IQT - DFN10 Pin connections (top view) 1 2 3 4 5 10 9 8 7 6 V IN - V O+ STBY V DD V IN + STBY MODE BYPASS V O- GND N/C 1 2 3 4 5 1 2 3 4 5 10 9 8 7 6 10 9 8 7 6 V IN - V O+ STBY V DD V IN + STBY MODE BYPASS V O- GND N/C 4 3 2 1 V IN+ V IN- V O+ GND Vcc V O- BYPASS 5 6 7 8 STBY 4 3 2 1 V IN+ V IN- V O+ GND Vcc V O- BYPASS 5 6 7 8 STBY TS4994IST - MiniSO-8 Part number Temperature range Package Packing Marking TS4994IQT -40°C to +85°C DFN10 Tape & reel K994 TS4994IST MiniSO-8 K994 www.st.com |
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同様の説明 - TS4994IQT |
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