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TPA721DGN Datasheet(PDF) 3 Page - Texas Instruments |
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TPA721DGN Datasheet(HTML) 3 Page - Texas Instruments |
3 / 22 page TPA721 700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER SLOS231B – NOVEMBER 1998 – REVISED MARCH 2000 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics at specified free-air temperature, VDD = 3.3 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOO Output offset voltage (measured differentially) See Note 1 20 mV PSRR Power supply rejection ratio VDD = 3.2 V to 3.4 V 85 dB IDD Supply current BTL mode 1.25 2.5 mA IDD(SD) Supply current, shutdown mode (see Figure 4) 7 50 µA NOTE 1: At 3 V < VDD < 5 V the dc output voltage is approximately VDD/2. operating characteristics, VDD = 3.3 V, TA = 25°C, RL = 8 Ω PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PO Output power, see Note 2 THD = 0.5%, 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 Gain = 2, THD = 2%, See Figure 7 20 kHz B1 Unity-gain bandwidth Open Loop, See Figure 15 1.4 MHz kSVR Supply ripple rejection ratio f = 1 kHz, CB = 1 µF, See Figure 2 79 dB Vn Noise output voltage Gain = 1, CB = 0.1 µF, See Figure 19 17 µV(rms) NOTE 2: 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 VOO Output offset voltage (measured differentially) 20 mV PSRR Power supply rejection ratio VDD = 4.9 V to 5.1 V 78 dB IDD Supply current 1.25 2.5 mA IDD(SD) Supply current, shutdown mode (see Figure 4) 50 100 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 Gain = 2, THD = 2%, See Figure 11 20 kHz B1 Unity-gain bandwidth Open Loop, See Figure 16 1.4 MHz kSVR Supply ripple rejection ratio f = 1 kHz, CB = 1 µF, See Figure 2 80 dB Vn Noise output voltage Gain = 1, CB = 0.1 µF, See Figure 20 17 µV(rms) † The DGN package, properly mounted, can conduct 700 mW RMS power continuously. The D package can only conduct 350 mW RMS power continuously wtih peaks to 700 mW. |
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