MAX9779ETI+ Maxim Integrated Products, MAX9779ETI+ Datasheet
MAX9779ETI+
Specifications of MAX9779ETI+
Related parts for MAX9779ETI+
MAX9779ETI+ Summary of contents
Page 1
... Portable DVD Players LCD Projectors Simplified Block Diagram AB AB MAX9779 GAIN ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. DirectDrive Headphone Amplifier ♦ No DC-Blocking Capacitors Required—Provides Industry’s Most Compact Notebook Audio Solution ♦ ...
Page 2
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier ABSOLUTE MAXIMUM RATINGS Supply Voltage ( HPV , CPV GND to PGND.....................................................................±0.3V CPV , C1N GND .........................-6.0V to (GND + 0.3V ...
Page 3
Stereo Audio Power Amplifier and ELECTRICAL CHARACTERISTICS (continued) = 5V, GND = PGND = CPGND = 0V, SHDN = CPV = HPV terminated between OUT_+ and OUT_-, headphone load terminated ...
Page 4
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier ELECTRICAL CHARACTERISTICS (continued) = 5V, GND = PGND = CPGND = 0V, SHDN = CPV = HPV terminated between OUT_+ and OUT_-, ...
Page 5
Stereo Audio Power Amplifier and (Measurement BW = 22Hz to 22kHz TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (SPEAKER MODE 3Ω OUTPUT POWER = 1.5W 0.1 0.01 OUTPUT ...
Page 6
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier (Measurement BW = 22Hz to 22kHz, T CROSSTALK vs. FREQUENCY (SPEAKER MODE - 200mV RIPPLE P-P - 4Ω L -30 -40 -50 ...
Page 7
Stereo Audio Power Amplifier and (Measurement BW = 22Hz to 22kHz TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER (HEADPHONE MODE) 1000 32Ω L 100 A = 3dB ...
Page 8
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier (Measurement BW = 22Hz to 22kHz OUTPUT POWER vs. CHARGE-PUMP CAPACITANCE AND LOAD RESISTANCE 200 180 160 140 120 2.2µF 100 ...
Page 9
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier PIN NAME 1 INL Left-Channel Audio Input 2 N.C. No Connection. Not internally connected PGND Power Ground 4 OUTL+ Left-Channel Positive Speaker Output 5 OUTL- Left-Channel Negative Speaker Output ...
Page 10
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier IN_ BIAS BIAS BIAS GND Figure 1. MAX9779 Signal Path Detailed Description The MAX9779 combines a 2.6W BTL speaker amplifier and a 110mW DirectDrive headphone amplifier with integrated headphone sensing and ...
Page 11
Stereo Audio Power Amplifier and allows the MAX9779 headphone amplifier output to be biased about GND, almost doubling the dynamic range while operating from a single supply. With no DC compo- nent, there is no need for the large ...
Page 12
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier ADDITIONAL THD+N DUE TO DC-BLOCKING CAPACITORS 10 1 0.1 TANTALUM 0.01 0.001 ALUM/ELEC 0.0001 10 100 1k FREQUENCY (Hz) Figure 4. Distortion Contributed by DC-Blocking Capacitors Headphone Sense Input (HPS) The ...
Page 13
Stereo Audio Power Amplifier and Table 1. MAX9779 Maximum Gain Settings GAIN2 GAIN1 Headphone Amplifier In conventional single-supply headphone amplifiers, the output-coupling capacitor is a major contributor of audible clicks and ...
Page 14
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier 1000 16Ω L 100 A = 3dB V 10 OUTPUTS IN PHASE 1 0.1 0.01 OUTPUTS 180° OUT OF PHASE 0.001 ...
Page 15
Stereo Audio Power Amplifier and Table 2. Suggested Capacitor Manufacturers SUPPLIER PHONE Taiyo Yuden 800-348-2496 TDK 807-803-6100 BIAS is the output of the internally generated DC bias voltage. The BIAS bypass capacitor, C PSRR and THD+N by reducing power ...
Page 16
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier For example, when compared to a 0Ω trace, a 100mΩ trace reduces the power delivered to a 4Ω load from 2.1W to 2W. Large output, supply, and GND traces also improve ...
Page 17
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier Pin Configuration TOP VIEW SHDN 22 GAIN2 23 GAIN1 24 MAX9779 GND 26 INR 27 GND ...
Page 18
Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier (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.) D D/2 MARKING XXXXX PIN # 1 I.D. ...
Page 19
... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © 2005 Maxim Integrated Products ...