MAX9789 MAXIM [Maxim Integrated Products], MAX9789 Datasheet
MAX9789
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MAX9789 Summary of contents
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... The industry-leading click-and-pop suppres- sion circuitry reduces audible transients during startup and shutdown cycles. The MAX9789 features an internal LDO that can be used as a clean power supply for a CODEC or other circuits. The LDO output voltage is set internally at 4.75V or can be adjusted between 1.21V and 4.75V using a simple resistive divider ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS ( CPV = HPV = HP_EN = (MAX9789 only) = 0V, I (MAX9789 only LDO_OUT 10dB 3.5dB), T GAIN2 VSP VHP PARAMETER SYMBOL GENERAL Supply Voltage ...
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... Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers ELECTRICAL CHARACTERISTICS (continued CPV = HPV = HP_EN = (MAX9789 only) = 0V, I (MAX9789 only LDO_OUT 10dB 3.5dB), T GAIN2 VSP VHP PARAMETER SYMBOL Power-Supply Rejection Ratio Voltage Gain Input Impedance ...
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... Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers ELECTRICAL CHARACTERISTICS (continued CPV = HPV = HP_EN = (MAX9789 only) = 0V, I (MAX9789 only LDO_OUT 10dB 3.5dB), T GAIN2 VSP VHP PARAMETER SYMBOL Power-Supply Rejection Ratio Voltage Gain Input Impedance ...
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... Line Regulation Load Regulation Ripple Rejection Output Voltage Noise DIGITAL INPUTS (SPKR_EN, HP_EN, MUTE, GAIN1, GAIN2, LDO_EN (MAX9789 Only)) Input-Voltage High Input-Voltage Low Input Bias Current Note 2: All devices are 100% production tested at room temperature. All temperature limits are guaranteed by design. ...
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Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers ( CPV = HPV = LDO_EN = +5V ∞, unless otherwise specified, GAIN1 = 0, GAIN2 = 1 (A unless otherwise ...
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Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers ( CPV = HPV = LDO_EN = +5V ∞, unless otherwise specified, GAIN1 = 0, GAIN2 = 1 (A unless otherwise ...
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... RMS R = 16Ω L -110 10 100 1k 10k FREQUENCY (Hz 1µF. R BIAS IN = +25°C, A MAX9789 toc19 SPKR_EN 5V/div OUT_+ AND OUT_- 2V/div OUT_+ - OUT_- 100mV/div 20ms/div V = -3dB FS OUT RMS 100 1k 10k 100k FREQUENCY (Hz) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (HEADPHONE MODE) ...
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Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers ( CPV = HPV = LDO_EN = +5V ∞, unless otherwise specified, GAIN1 = 0, GAIN2 = 1 (A unless otherwise ...
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... 16Ω 32Ω OUTPUT POWER PER CHANNEL (mW) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (HEADPHONE MODE 200mV RIPPLE P-P OUTPUT REFERRED 10 100 1k 10k 100k FREQUENCY (Hz) HEADPHONE STARTUP WAVEFORM MAX9789 toc38 MAX9789B/MAX9790B HP_EN 5V/div HP_ 500mV/div 20ms/div = 1µ +25°C, A ...
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... ∞, unless otherwise specified, GAIN1 = 0, GAIN2 = 1 (A unless otherwise noted. Headphone mode: SPKR_EN = 1, HP_EN = 0. Speaker mode: SPKR_EN = 0, HP_EN = 1.) HEADPHONE SHUTDOWN WAVEFORM 20ms/div SHUTDOWN CURRENT vs. SUPPLY VOLTAGE 0.3 SPKR_EN = 5V HP_EN = 0 LDO_EN = 0 (MAX9789) 0.2 0.1 0 4.50 4.75 5.00 SUPPLY VOLTAGE (V) LDO OUTPUT VOLTAGE ACCURACY vs. AMPLIFIER OUTPUT POWER 0. ...
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... 1µF. R LDO_SET BIAS IN A OUTPUT NOISE vs. FREQUENCY 10 P-P 1 0.1 0.01 10 100 1k 100k FREQUENCY (Hz) LDO LOAD-TRANSIENT RESPONSE MAX9789 toc49 I LDO_OUT 15mA/div AC-COUPLED V LDO_OUT 10mV/div 20ms/div LDO CROSSTALK vs. FREQUENCY V = 4.75V LDO_OUT OUT R = 4Ω 0mA OUT RIGHT SPEAKER TO LDO ...
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... Left-Channel Headphone Amplifier Input Signal Ground. Star-connect to PGND. Positive Power Supply and LDO Input (MAX9789). Bypass with one 0.1µF capacitor and two 1µF capacitors to GND (MAX9789). Bypass with one 0.1µF capacitor and one 1µF capacitor to GND (MAX9790). Speaker Amplifier Gain Select 1 Speaker Amplifier Gain Select 2 No Connection ...
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... The headphone amplifiers operate from these bipolar supplies with their outputs biased about GND. The benefit of the GND bias is that the amplifier outputs no longer have a DC component (typically V feature eliminates the large DC-blocking capacitors Table 1. Windows Premium Mobile Vista Specifications vs. MAX9789/MAX9790 Specifications DEVICE TYPE REQUIREMENT THD+N ...
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... Maxim’s patented DirectDrive architecture uses a charge pump to create an internal negative supply volt- age. It allows the MAX9789/MAX9790 headphone amplifier output to be biased about GND. With no DC component, there is no need for the large DC-blocking LDO_OUT ...
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... Limiting the switching speed of the charge pump minimizes the di/dt noise caused by the parasitic bond wire and trace inductance. The MAX9789/MAX9790 feature an internally generat- ed, power-supply independent, common-mode bias voltage of 1.8V referenced to GND. BIAS provides both click-and-pop suppression and sets the DC bias level for the amplifiers. The BIAS pin should be bypassed to GND with a 1µ ...
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... Likewise, during shutdown, the capacitor is dis- DD charged to GND shift across the capacitor results, which in turn, appears as an audible transient at the headphone. Since the MAX9789/MAX9790 do not require output-coupling capacitors, no audible transient occurs. Additionally, the MAX9789/MAX9790 features extensive click-and-pop suppression that eliminates any audible transient sources internal to the device ...
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... SNR performance will be improved as a result. 2) Eliminate gain error by eliminating any resistive mismatch between the external resistance used to sum the left and right signals and the MAX9789 internal resistance. Power Dissipation and Heat Sinking Under normal operating conditions, the MAX9789/ MAX9790 can dissipate a significant amount of power ...
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Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers Headphone Amplifier Power-Supply Input (HPV The headphone amplifiers are powered from HPV and PV . HPV is the positive supply of the head phone amplifiers and ranges ...
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... Large output, supply and GND traces also improve the power dissipation of the device. The MAX9789/MAX9790 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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... LOGIC PINS CONFIGURED FOR: LDO_EN = 1, LDO ENABLED SPKR_EN = 0, SPEAKER AMPLIFIERS ENABLED HP_EN = 1, HEADPHONE AMPLIFIER ENABLED MUTE = 1, MUTE DISABLED GAIN1 = 0 GAIN = 0, 6dB SPEAKER GAIN ______________________________________________________________________________________ 4. MAX9789 3 STEREO BTL AMPLIFIER 2 CONTROL LDO BLOCK GND PGND Block Diagrams 0.1µF ...
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Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers 1.0μF SPKR_INL 3 1.0μF SPKR_INR 2 1.0μF HP_INL 27 1.0μF HP_INR 5.5V HP_EN 22 MUTE 25 SPKR_EN 23 GAIN2 32 GAIN1 31 LOGIC PINS CONFIGURED FOR: ...
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... DD BIAS 1μF OUTL 1μF OUTL- SPKR_INL C IN 1μF SPKR_INR C IN OUTR+ 1μF HP_INR OUTR 1μF HP_INL MAX9789 CPV DD 3 C1P C 1 LDO_SET 1μF C1N LDO_OUT SPKR_EN HP_EN LDO_EN CPV GAIN1 GAIN2 CPGND MUTE PGND GND 100μF 0.47μF 0.47μF 0.47μ ...
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... DGND AGND 24 ______________________________________________________________________________________ System Diagrams (continued) +5V 1μF 1μF 0.1μ 1μF SPKR_INL 1μF SPKR_INR 1μF HP_INR 1μF HP_INL +3.3V MAX9789 CPV 1μF C1P C 1 1μF C1N SPKR_EN HP_EN μC LDO_EN GAIN2 GAIN1 MUTE GND SHDNR SHDNL 1μF MAX4411 INR 1μ ...
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... Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers TOP VIEW MUTE 25 HP_INR 26 27 HP_INL 28 GND MAX9789 29 LDO_OUT GAIN1 + 32 GAIN2 TQFN *EP = EXPOSED PADDLE Simplified Block Diagrams SPEAKER SUPPLY HEADPHONE SUPPLY 4.5V TO 5.5V 3.0V TO 5.5V MAX9790 SPKR_INR SPKR_INL ...
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Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings ...
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Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings ...
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... REVISION NUMBER DATE 2 8/08 Added MAX9789C to data sheet and made miscellaneous clarifications 3 9/09 Corrected the Block Diagrams 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. ...