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MAX9768ETG Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX9768ETG Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 25 page 10W Mono Class D Speaker Amplifier with Volume Control 4 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (PVDD = 12V, VDD = 3.3V, GND = PGND = 0V, V SHDN = VDD, VMUTE = 0V; Max volume setting; speaker load resistor connected between OUT+ and OUT-, RL = ∞, unless otherwise noted. CBIAS = 2.2µF, C1 = C2 = 0.1µF, CIN = 0.47µF, RIN = 20kΩ, RF = 30kΩ, SSM mode. Filterless modulation mode (see the Functional Diagram/Typical Application Circuit). TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SYNC = GND 265 300 330 SYNC = unconnected 324 360 396 Class D Switching Frequency SYNC = VDD (spread-spectrum modulation mode) 300 ±7.5 kHz SYNC Frequency Lock Range 1000 1600 kHz Minimum SYNC Frequency Lock Duty Cycle 40 % Maximum SYNC Frequency Lock Duty Cycle 60 % Gain Matching Full volume (ideal matching for RIN and RF)2 % Into shutdown 52.6 Out of shutdown 48 Into mute 67 Click-and-Pop Level (Note 2) KCP Peak voltage, 32 samples per second, A-weighted, RIN x CIN ≤ 10ms to guarantee clickless/popless operation Out of mute 57 dBV Input Impedance DC volume control mode (SDA/VOL) 100 M Ω Input Hysteresis DC volume control mode (SDA/VOL) 11 mV 9.5dB Gain Voltage DC volume control mode (SDA/VOL) 0.1 x VDD V Full Mute Voltage DC volume control mode (SDA/VOL) 0.9 x VDD V DIGITAL INPUTS ( SHDN, MUTE, ADDR1, ADDR2, SYNC) SYNC 2.33 Input-Voltage High VIH All other pins 0.7 x VDD V SYNC 0.8 Input-Voltage Low VIL All other pins 0.3 x VDD V ISYNC ±7.5 ±13 Input Leakage Current ILK All other digital inputs ±1 µA DIGITAL OUTPUT (SYNCOUT) Output-Voltage High Load = 1mA VDD - 0.3 V Output-Voltage Low Load = 1mA 0.3 V Rise/Fall Time CL = 10pF 5 ns |
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