max9724a Maxim Integrated Products, Inc., max9724a Datasheet
max9724a
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max9724a Summary of contents
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... Maxim’s website at www.maxim-ic.com. ♦ Improved RF Noise Rejection (Up to 67dB Over Typical Amplifiers) ♦ No Bulky DC-Blocking Capacitors Required ♦ Low-Power Shutdown Mode, < 0.1μA ♦ Adjustable Gain (MAX9724A) or Fixed -1.5V/V Gain (MAX9724B) ♦ Low 0.02% THD+N ♦ High PSRR (80dB at 1kHz) Eliminates LDO ♦ Integrated Click-and-Pop Suppression ♦ ...
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... Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Bump Temperature (soldering) Reflow............................+235° above below ∞, resistive load reference to ground; for MAX9724A gain = -1.5V -40°C to +85°C, unless otherwise noted. Typical values A CONDITIONS V Guaranteed by PSRR test ...
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... V (TQFN only) INH V (TQFN only) INL V (UCSP only) INH V (UCSP only) INL = ∞, resistive load reference to ground; for MAX9724A gain = -1.5V -40°C to +85°C, unless otherwise noted. Typical values A CONDITIONS I CC SHDN = SGND = PGND I SHDN f = 1kHz, 100mV P-P PSRR ...
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... IN 0.1 0. 10kHz 20Hz IN 0.001 100 OUTPUT POWER (mW) = 20kΩ 30kΩ for the MAX9724A +25°C, unless otherwise noted.) TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER (TQFN) 100 32Ω 1kHz IN 0 10kHz IN 0 ...
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... 16Ω 10% THD THD 2.5 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) = 20kΩ 30kΩ for the MAX9724A +25°C, unless otherwise noted.) A TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (UCSP 32Ω 8mW OUT 0. 13mW OUT 0.001 ...
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... 1kHz OUT OUTL OUTR OUTPUTS IN PHASE OUTPUT POWER (mW) = 20kΩ 30kΩ for the MAX9724A +25°C, unless otherwise noted.) OUTPUT POWER vs. LOAD RESISTANCE (TQFN 10% THD THD 100 LOAD RESISTANCE (Ω ...
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... NO LOAD INPUTS GND 120 100 LOAD 20 INPUTS GROUND 0 4.5 5.0 5.5 2.5 = 20kΩ 30kΩ for the MAX9724A +25°C, unless otherwise noted 2.2μ 1μ 0.47μ 1kHz IN THD 100 150 LOAD RESISTANCE (Ω 32Ω ...
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... SHDN 5V/div V IN_ 1V/div V OUT_ 500mV/div FUNCTION and bypass with a 1µF ceramic capacitor to PGND Connect 20kΩ 30kΩ for the MAX9724A +25°C, unless otherwise noted.) ENTERING SHUTDOWN 20 s/div μ Pin Description or leave unconnected. SS ...
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... Typical Operating Characteristics for details of the possible capacitor sizes. There is a low DC voltage on the amplifier outputs due to amplifier off- set. However, the offsets of the MAX9724A/MAX9724B are typically 1.5mV, which, when combined with a 32Ω load, results in less than 47µ current flow to the headphones ...
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... Figure 2. RF Susceptibility of the MAX9724 and a Typical Headphone Amplifier 10 ______________________________________________________________________________________ Typically, the output of the device driving the MAX9724A/MAX9724B has a DC bias of half the supply voltage. At startup, the input-coupling capacitor, C charged to the preamplifier’s DC bias voltage through the MAX9724A/MAX9724B input resistor, R series 15kΩ resistor. This DC shift across the capacitor results in an audible click-and-pop ...
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... JA tions and prevents deep battery discharge. Once the supply voltage exceeds the UVLO threshold, the MAX9724A/MAX9724B charge pump is turned on and the amplifiers are powered, provided that SHDN is high. The input capacitor (C resistor (R ), forms a highpass filter that removes the ...
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... Functional Diagram/Typical Operating Circuits). The gain of the MAX9724A amplifier is set externally as shown in Figure 3, the gain is: 12 ______________________________________________________________________________________ Choose feedback resistor values in the tens of kΩ ...
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... Having the ability to derive 2V even 3.3V supply, can often simplify power-supply design in some systems. When the MAX9724A is used as a line driver to provide outputs that feed stereo equipment (receivers, STBs, notebooks, and desktops) with a digital-to-analog con- verter (DAC) used as an audio input source often ...
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... Low RF Susceptibility and Shutdown To suppress this noise, and to provide a 2V dard audio output level from a single 5V supply, the MAX9724A can be configured as a line driver and active lowpass filter. Figure 5 shows the MAX9724A connected as 2-pole Rauch/multiple feedback filter with a passband gain of 6dB and a -3dB (below passband) cutoff frequency of approximately 27kHz (see Figure 6 for the Gain vs ...
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DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown μCONTROLLER STEREO DAC ______________________________________________________________________________________ V DD 0.1μF 15kΩ 1μF 15kΩ INR OUTR OUTR- BIAS 1μF MAX9710 GND PGND MUTE OUTL- 0.1μF SHDN 15kΩ OUTL+ INL ...
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... Functional Diagram/Typical Operating Circuits 0.47μF LEFT 20kΩ ON AUDIO OFF INPUT 5 6 (A2) (B3) INL SHDN UVLO/ SHUTDOWN CLICK-AND-POP CONTROL SUPPRESSION SGND MAX9724A PGND SGND INR (C2) (A1) (B2 0.47μF 20kΩ RIGHT AUDIO INPUT 30kΩ V ...
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DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown Functional Diagram/Typical Operating Circuits (continued) 2.7V TO 5.5V C3 OFF 1μF 12 (B1 (C1) C1P CHARGE C1 PUMP 1μF 3 (C3) C1N SV PV PGND SS ...
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... OUTL 11 MAX9724B TQFN 18 ______________________________________________________________________________________ TOP VIEW (BUMPS ON BOTTOM INL 5 SHDN TRANSISTOR COUNT: 993 PROCESS: BiCMOS Pin Configurations MAX9724A/MAX9724B A SGND SHDN OUTR OUTL B V INR INL C1P PGND C1N PV SS UCSP Chip Information ...
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DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown (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.) E MARKING E/2 AAAA D/2 D ...
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DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown (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.) PKG 8L 3x3 12L 3x3 REF. ...
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DirectDrive, Stereo Headphone Amplifier with Low RF Susceptibility and Shutdown (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.) ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE, ...
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... Maxim reserves the right to change the circuitry and specifications without notice at any time. 22 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products Revision History DESCRIPTION is a registered trademark of Maxim Integrated Products, Inc. PAGES CHANGED — 1– 12, 14–16 1– ...