max9791 Maxim Integrated Products, Inc., max9791 Datasheet
max9791
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max9791 Summary of contents
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... Rev 0; 11/08 Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers General Description The MAX9791 combines a stereo 2W Class D power amplifier, a stereo 180mW DirectDrive amplifier, and a 120mA low-dropout (LDO) linear regu- lator in a single device. The MAX9792 combines a mono 3W Class D power amplifier, a stereo 180mW DirectDrive headphone amplifier, and a 120mA LDO linear regulator in a single device ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage (AVDD, PVDD, HPVDD to GND)........................-0.3V to +6.0V GND to PGND, CPGND ......................................................±0.3V CPVSS, C1N to GND ............................................-6. 0.3V HPL, HPR to CPVSS ...........................................-0.3V ...
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... A (Note 3Ω L (MAX9792) P OUT R = 4Ω L (MAX9791) THD 1kHz 8Ω +25°C (MAX9791) A (Note 3Ω L (MAX9792 8Ω 500mW 1kHz (Note 4) L OUT R = 4Ω 500mW 1kHz (Note 4) L OUT 4.5V to 5.5V, T AVDD PVDD ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers ELECTRICAL CHARACTERISTICS (continued 5V, V AVDD PVDD HPVDD GND wise specified 20kΩ 12dB), R IN1 VSPKR unless otherwise noted. Typical ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers ELECTRICAL CHARACTERISTICS (continued 5V, V AVDD PVDD HPVDD GND wise specified 20kΩ 12dB), R IN1 VSPKR unless otherwise noted. Typical ...
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... L - -3dBFS IN -20 -30 - 707mV RMS -50 -60 - RMS -80 -90 -100 100 0.01 0.1 1 FREQUENCY (kHz) TOTAL HARMONIC DISTORTION + NOISE vs. OUTPUT POWER (MAX9791 SPEAKER MODE) 100 R = 8Ω 6kHz 1kHz 0.1 0. 100Hz 0.001 3.0 0 0.5 1.0 OUTPUT POWER ( MIN MAX = +25° 100 1 ...
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... OUTPUT POWER (W) _______________________________________________________________________________________ Typical Operating Characteristics (continued PGND CPGND LDO_OUT = 12dB 40.2kΩ 0dB), C IN2 VHP SPEAKER OUTPUT POWER vs. LOAD RESISTANCE (MAX9791 SPEAKER MODE) 3 1kHz 2.5 THD+N = 10% 2.0 THD 1.5 1.0 0 LOAD RESISTANCE (Ω) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (SPEAKER MODE 200mV ...
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... OUT f = 1kHz - 8Ω L UNWEIGHTED -40 -60 -80 -100 -120 -140 1 100 = ∞, unless oth 1µ 1µF. R LDO L = 470nF 1µF, measurement BW IN1 IN2 COM MAX9791 toc14 SPKR_EN 2V/div SPEAKER OUT 200μs/div (SPEAKER MODE) = -60dBV FREQUENCY (kHz) ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers ( 5V, V AVDD PVDD HPVDD GND erwise specified 20kΩ (A IN1 VSPKR = +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, ...
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... COM AND SENSE V DISABLED -40 RIGHT TO LEFT COM AND SENSE -50 DISABLED -60 RIGHT TO LEFT -70 COM AND SENSE -80 LEFT TO RIGHT -90 COM AND SENSE -100 100 0.01 0.1 1 FREQUENCY (kHz) STARTUP WAVEFORM MAX9791 toc33 HP_EN 2V/div HP_ 500mV/div 200μs/div 80 100 = 32Ω L RMS = -20dBFS IN 10 100 ...
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... Typical Operating Characteristics (continued PGND CPGND LDO_OUT = 12dB 40.2kΩ 0dB), C IN2 VHP HEADPHONE MAX9791 toc34 HP_EN 2V/div HP_ 500mV/div -110 -130 = ∞, unless oth 1µ 1µF. R LDO L = 470nF 1µF, measurement BW IN1 IN2 ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers ( 5V, V AVDD PVDD HPVDD GND erwise specified 20kΩ (A IN1 VSPKR = +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers ( 5V, V AVDD PVDD HPVDD GND erwise specified 20kΩ (A IN1 VSPKR = +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers ( 5V, V AVDD PVDD HPVDD GND erwise specified 20kΩ (A IN1 VSPKR = +25°C, unless otherwise noted. Speaker mode: SPKR_EN = 0, ...
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... V LDO_EN -120 2V/div -130 = ∞, unless oth 1µ 1µF. R LDO L = 470nF 1µF, measurement BW IN1 IN2 COM LOAD-TRANSIENT RESPONSE MAX9791 toc51 I LDO_OUT 50mV/div AC-COUPLED V LDO_OUT 10mV/div 100ms/div CROSSTALK vs. FREQUENCY SPEAKER TO LDO 0 BOTH SPEAKERS WITH SIGNAL P = 1.2W SPKR ...
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... PC Beep Input. Connect to GND if beep detection function is disabled. 22 HP_EN Active-High Headphone Amplifier Enable 24 OUTR+ Right-Channel Speaker Amplifier Output, Positive Phase 25 OUTR- Right-Channel Speaker Amplifier Output, Negative Phase SPKR_EN 27 Active-Low Speaker Amplifier Enable 28 SPKR_INR Right-Channel Speaker Amplifier Input — EP Exposed Pad. Connect to GND. 16 ______________________________________________________________________________________ MAX9791 Pin Description FUNCTION ...
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... Speaker Amplifier Input — EP Exposed Pad. Connect to GND. Detailed Description The MAX9791 combines a stereo 2W Class D power amplifier, a stereo 175mW DirectDrive headphone amplifier, and a 120mA LDO linear regulator in a single device. The MAX9792 combines a mono 3W Class D power amplifier, a stereo 175mW DirectDrive head- phone amplifier, and a 120mA LDO linear regulator in a single device ...
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... Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers Table 1. Windows Premium Mobile Vista Specifications vs. MAX9791/MAX9792 Specifications DEVICE TYPE REQUIREMENT THD+N Analog Line-Out Jack Dynamic range with signal (R = 10kΩ present 0.707V ) RMS Line output crosstalk THD+N Dynamic range with signal ...
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... FREQUENCY (MHz) Figure 2. EMI with 30cm of Speaker Cable In addition to active emission limiting, the MAX9791/ MAX9792 feature patented spread-spectrum modulation that flattens the wideband spectral components. Proprietary techniques ensure that the cycle-to-cycle variation of the switching period does not degrade audio reproduction or efficiency (see the Typical Operating Characteristics ) ...
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... However often necessary to locate some jacks far from the audio device. The MAX9791/MAX9792 COM and SENSE inputs allow the headphone jack to be placed further away from the device without degrading crosstalk performance. ...
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... SPKR AND HP AMPS ENABLE Figure 7. Qualified BEEP Signal Timing ______________________________________________________________________________________ Figure 6. MAX9791/MAX9792 COM and SENSE Inputs Reduce Crosstalk time, connect SPKR_EN and HP_EN together, allowing a single logic voltage to enable either the speaker or the headphone amplifier as shown in Figure 8. The MAX9791/MAX9792 feature a low-power shutdown mode, drawing 0.1µ ...
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... Figure 8. Enabling Either the Speaker or Headphone Amplifier with a Single Control Pin Click-and-Pop Suppression The MAX9791/MAX9792 feature a common-mode bias voltage of 0V BIAS allows the MAX9791/MAX9792 to quickly turn on/off with no resulting clicks and pops. With the HDA CODEC outputs biased and the MAX9791/MAX9792 inputs sitting shutdown ...
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... Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers Setting Speaker Amplifier Gain External input resistors in conjunction with the internal feedback resistors (R ) set the speaker amplifier FSPKR gain of the MAX9791/MAX9792. Set gain by using resistor R as follows (Figure 9): IN1 ⎛ ⎞ Ω ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers INPUT COUPLING CAPACITOR-INDUCED THD+N vs. FREQUENCY (HEADPHONE MODE) -50 0603 10V X7R 10% 1μF -60 -70 0603 10V X5R 10% 1μF -80 0805 50V X7R 10% 1μF -90 0402 6.3V ...
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... Large output, supply, and GND traces also improve the power dissi- pation of the device. The MAX9791/MAX9792 thin QFN package features an exposed thermal pad on its underside. This pad lowers the package’s thermal resistance by providing a direct heat conduction path from the die to the printed circuit board ...
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... Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers TOP VIEW HP_EN 22 PGND 23 24 OUTR+ 25 OUTR- MAX9791A MAX9791B 26 PVDD SPKR_EN SPKR_INR TQFN (4mm x 4mm x 0.75mm) *EP = EXPOSED PAD 26 ______________________________________________________________________________________ TOP VIEW HP_EN CPGND C1N 13 PGND 12 CPVSS ...
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... AVDD 7 1.0μF 1.0μF 0.1μF LDO_OUT 6 TO CODEC 1.0μF 1.0μF NOTE: LOGIC PINS CONFIGURED FOR: LDO_EN = 1, LDO ENABLED SPKR_EN = 0, SPEAKER AMPLIFIERS ENABLED HP_EN = 1, HEADPHONE AMPLIFIER ENABLED ______________________________________________________________________________________ MAX9791A/MAX9791B Block Diagram 4.5V TO 5.5V 0.1μF PVDD 17, 26 MAX9791A MAX9791B 20kΩ 1 STEREO CLASS D AMPLIFIER 28 20kΩ ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers C IN3 R IN3 C RIN1 IN1 SPKR_IN C R IN2 IN2 HP_INL 3 C IN2 R IN2 HP_INR 2 4.5V TO 5.5V LDO_EN 8 HP_EN 22 BEEP 21 μC ...
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Windows Vista-Compliant Class D Speaker Amplifiers with DirectDrive Headphone Amplifiers For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 28 TQFN-EP ______________________________________________________________________________________ Package Information PACKAGE CODE T2844-1 DOCUMENT NO. 21-0139 29 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 30 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc. ...