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MAX9770 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX9770 Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 24 page 10 0.001 10 100 10k 100k TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (SPEAKER MODE) 0.01 0.1 1 FREQUENCY (Hz) 1k VDD = +5V RL = 4 Ω POUT = 25mW POUT = 1000mW 10 0.001 10 100 10k 100k TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (SPEAKER MODE) 0.01 0.1 1 FREQUENCY (Hz) 1k RL = 4 Ω POUT = 100mW POUT = 500mW 10 0.001 10 100 10k 100k TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (SPEAKER MODE) 0.01 0.1 1 FREQUENCY (Hz) 1k RL = 8 Ω POUT = 40mW POUT = 400mW Typical Operating Characteristics (VDD = 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase.) 1.2W Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifiers 4 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (VDD = PVDD = CPVDD = 3.3V, GND = PGND = CPGND = 0V, SHDN = 3.3V, C1 = C2 = 1µF, CBIAS = 0.047µF, SYNC = GND, RL = ∞, speaker load connected between OUT+ and OUT-, headphone load connected between HPOUT_ and GND, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Capacitive-Load Drive CL 1000 pF GAIN1 = 0, GAIN2 = 0 7 GAIN1 = 0, GAIN2 = 1 4 GAIN1 = 1, GAIN2 = 0 -2 Gain AV GAIN1 = 1, GAIN2 = 1 1 dB Gain Accuracy ±2.5 % ESD Protection HPOUTR, HPOUTL, IEC Air Discharge ±8kV DIGITAL INPUTS ( SHDN, SYNC, HPS, GAIN_, SEL_) Input Voltage High VIH 2V Input Voltage Low VIL 0.8 V SYNC input ±25 Input Leakage Current All other logic inputs ±1 µA HPS Input Current HPS = GND -10 µA Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design. Note 2: Speaker amplifier testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For RL = 4 Ω, L = 47µH. For RL = 8Ω, L = 68µH. Note 3: Guaranteed by design, not production tested. Note 4: PSRR is specified with the amplifier inputs connected to GND through CIN. |
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