MAX9768B MAXIM [Maxim Integrated Products], MAX9768B Datasheet

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... MAX9768B—15ms ♦ Low-Power Shutdown Mode (0.5µA) ♦ Short-Circuit and Thermal-Overload Protection PART MAX9768ETG+ Applications MAX9768BETG+ Note: All devices are specified over the -40°C to +85°C oper- ating temperature range. + Denotes lead-free package Exposed pad. Pin Configuration located at end of data sheet. ...

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... SHDN PVDD DD Filterless modulation MUTE DD A Filterless modulation 0V +25°C MUTE A MAX9768 MAX9768B Specified 2kΩ connect to 1. Specified 2kΩ connect to 1. GND OL Max volume setting; from FB to amplifier outputs |(OUT+) - (OUT-)|; excludes external gain resistors = +70° ...

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ELECTRICAL CHARACTERISTICS (continued) (PV = 12V 3.3V, GND = PGND = 0V between OUT+ and OUT ∞, unless otherwise noted SSM mode. Filterless modulation mode (see the Functional Diagram/Typical Application Circuit ...

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Mono Class D Speaker Amplifier with Volume Control ELECTRICAL CHARACTERISTICS (continued) (PV = 12V 3.3V, GND = PGND = 0V between OUT+ and OUT ∞, unless otherwise noted SSM mode. ...

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ELECTRICAL CHARACTERISTICS (continued) (PV = 12V 3.3V, GND = PGND = 0V between OUT+ and OUT ∞, unless otherwise noted SSM mode. Filterless modulation mode (see the Functional Diagram/Typical Application Circuit ...

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Mono Class D Speaker Amplifier with Volume Control ELECTRICAL CHARACTERISTICS (continued) (PV = 12V 3.3V, GND = PGND = 0V between OUT+ and OUT ∞, unless otherwise noted SSM mode. ...

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V = 3.3V = GND = PGND = 0V OUT+ and OUT 8Ω, unless otherwise noted spread-spectrum modulation mode.) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY ...

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Mono Class D Speaker Amplifier with Volume Control (PV = 12V 3.3V = GND = PGND = 0V OUT+ and OUT 8Ω, unless otherwise noted spread-spectrum modulation mode.) EFFICIENCY vs. ...

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V = 3.3V = GND = PGND = 0V OUT+ and OUT 8Ω, unless otherwise noted spread-spectrum modulation mode.) POWER-SUPPLY REJECTION RATIO ( vs. FREQUENCY ...

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... MAX9768 toc32 100ms/div 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 2.0 2.5 3.0 3.5 (V) VOL ) DD 0.50 0.45 0.40 0.35 0.30 3.2 3.4 3.6 = 0.47µ 20kΩ TURN-ON/OFF RESPONSE (MAX9768B) SHDN 2V/div OUT 500mA/div 40ms/div SUPPLY CURRENT ( vs. SUPPLY VOLTAGE R = ∞ L PWM MODE FILTERLESS MODULATION SUPPLY VOLTAGE (V) SHUTDOWN CURRENT vs. SUPPLY VOLTAGE SHUTDOWN CURRENT = PVDD 3. ...

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PIN NAME 1, 2 OUT+ Positive Speaker Output Speaker Amplifier Power-Supply Input. Bypass with a 1µF capacitor to ground. DD Positive Speaker Output Boost Flying-Capacitor Connection. Connect a 0.1µF ceramic capacitor 4 BOOT+ between BOOT+ and OUT+. ...

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Mono Class D Speaker Amplifier with Volume Control 0.47µF 20kΩ (SHOWN IN ANALOG VOLUME CONTOL MODE Detailed Description The MAX9768 10W, Class D audio power amplifier with spread-spectrum modulation provides a ...

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Operating Modes Fixed-Frequency Mode The MAX9768 features two fixed-frequency modes: 300kHz and 360kHz. Connect SYNC to GND to select 300kHz switching frequency; leave SYNC unconnected to select 360kHz switching frequency. The frequency spectrum of the MAX9768 consists of the fundamental ...

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... The startup time for the MAX9768 is typically 220ms. The startup time for the MAX9768B is typically 15ms. Efficiency of a Class D amplifier is due to the switching operation of the output stage transistors Class D amplifier, the output transistors act as current-steering switches and consume negligible additional power ...

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... When the output current exceeds the hard current limit, 2.5A (typ), the MAX9768 disables the outputs and initi- ates a startup sequence. This startup sequence takes 220ms for the MAX9768 and 15ms for the MAX9768B. The shutdown and startup sequence is repeated until the output fault is removed. When in hard current limit, the output may make a soft clicking sound ...

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Mono Class D Speaker Amplifier with Volume Control SDA t SU,DAT t LOW SCL t HIGH t HD,STA t R START CONDITION Figure 3. 2-Wire Serial-Interface Timing Diagram One data bit is transferred during each SCL cycle. The data ...

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Table 3. Slave Address Block SA7 (MSB) SA6 1 0 Table 4. Slave Address ADDR2 ADDR1 write to the MAX9768 includes transmission of a START condition, the slave address with the ...

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Mono Class D Speaker Amplifier with Volume Control Table 5. Data Byte Format (MSB Table 6. Speaker Volume Levels ...

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Table 6. Speaker Volume Levels (continued ...

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Mono Class D Speaker Amplifier with Volume Control Applications Information Filterless Class D Operation The MAX9768 can be operated without a filter and meet common EMC radiation limits when the speaker leads are less than approximately 10cm. Lengths beyond ...

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Inductor-Based Output Filters Some applications will use the MAX9768 with a full inductor-/capacitor-based (LC) output filter. This is common for longer speaker lead lengths, and to gain increased margin to EMC limits. Select the PWM output mode and use fixed-frequency ...

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Mono Class D Speaker Amplifier with Volume Control AUDIO INPUT IN MAX9768 Figure 9. Setting Gain The MAX9768 has different supplies for each portion of the device, allowing for the optimum combination ...

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Pin Configuration TOP VIEW SHDN 19 MUTE 20 PGND 21 MAX9768 PGND 22 ADDR2 23 + ADDR1 TQFN (4mm × 4mm) ______________________________________________________________________________________ 10W Mono Class D Speaker ...

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Mono Class D Speaker Amplifier with Volume Control (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 24 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, 12, 16, ...

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For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim ...