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TPA751 Datasheet(PDF) 3 Page - Texas Instruments |
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TPA751 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 23 page TPA751 700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER WITH DIFFERENTIAL INPUTS SLOS336C – DECEMBER 2000 – REVISED OCTOBER 2002 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions MIN MAX UNIT Supply voltage, VDD 2.5 5.5 V High-level input voltage, VIH, (SHUTDOWN) 0.9VDD V Low-level input voltage, VIL, (SHUTDOWN) 0.1VDD V Operating free-air temperature, TA – 40 85 °C electrical characteristics at specified free-air temperature, VDD = 3.3 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT |VOS| Output offset voltage (measured differentially) SHUTDOWN = VDD, RL = 8 Ω, RF = 10 kΩ 20 mV PSRR Power supply rejection ratio VDD = 3.2 V to 3.4 V 85 dB IDD Supply current SHUTDOWN = VDD, RF = 10 kΩ 1.25 2.5 mA IDD(SD) Supply current, shutdown mode (see Figure 4) SHUTDOWN = 0 V, RF = 10 k Ω 1.5 1000 nA |IIH| SHUTDOWN, VDD = 3.3 V, Vi = VDD 1 µA |IIL| SHUTDOWN, VDD = 3.3 V, Vi = 0 V 1 µA operating characteristics, VDD = 3.3 V, TA = 25°C, RL = 8 Ω PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PO Output power, See Note 1 THD = 0.2%, See Figure 9 250 mW THD + N Total harmonic distortion plus noise PO = 250 mW, f = 200 Hz to 4 kHz, See Figure 7 0.55% BOM Maximum output power bandwidth AV = –2 V/V, THD = 2%, See Figure 7 20 kHz B1 Unity-gain bandwidth Open loop, See Figure 15 1.4 MHz Supply ripple rejection ratio f = 1 kHz, CB = 1 µF, See Figure 2 79 dB Vn Noise output voltage AV = –1V/V, CB = 0.1 µF, See Figure 19 17 µV(rms) NOTE 1: Output power is measured at the output terminals of the device at f = 1 kHz. electrical characteristics at specified free-air temperature, VDD = 5 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT |VOS| Output offset voltage (measured differentially) SHUTDOWN = VDD, RL = 8 Ω, RF = 10 kΩ 20 mV PSRR Power supply rejection ratio VDD = 4.9 V to 5.1 V 78 dB IDD Supply current SHUTDOWN = VDD, RF = 10 kΩ 1.45 2.5 mA IDD(SD) Supply current, shutdown mode (see Figure 4) SHUTDOWN = 0 V, RF = 10 k Ω 5 1500 nA |IIH| SHUTDOWN, VDD = 5.5 V, Vi = VDD 1 µA |IIL| SHUTDOWN, VDD = 5.5 V, Vi = 0 V 1 µA operating characteristics, VDD = 5 V, TA = 25°C, RL = 8 Ω PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PO Output power THD = 0.5%, See Figure 13 700† mW THD + N Total harmonic distortion plus noise PO = 250 mW, f = 200 Hz to 4 kHz, See Figure 11 0.5% BOM Maximum output power bandwidth AV = –2 V/V, THD = 2%, See Figure 11 20 kHz B1 Unity-gain bandwidth Open loop, See Figure 16 1.4 MHz Supply ripple rejection ratio f = 1 kHz, CB = 1 µF, See Figure 2 80 dB Vn Noise output voltage AV = –1 V/V, CB = 0.1 µF, See Figure 20 17 µV(rms) † The GQS and DGN packages, properly mounted, can conduct 700 mW RMS power continuously. The D package, can only conduct 350 mW RMS power continuously, with peaks to 700 mW. |
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