Audio Section Components
Part Number | Functional Description |
| The MAX4550 |
| for multimedia applications. It contains two identical crosspoint switch arrays, each with four |
| inputs and two outputs. To improve |
| can be used as shunts. The output is selectively programmable for clickless or regular mode |
MAX4550 | operation. A set of internal resistive |
using | |
| through the MAX4550’s |
| Additional information: |
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| The MAX9728A stereo headphone amplifier is designed for display and notebook |
| applications or portable equipment where board space is at a premium. This device uses a |
| unique, patented DirectDrive™ architecture to produc e a |
| single supply, thereby eliminating the need for large |
| board space, and component height. The MAX9728A offers an externally adjustable gain and |
MAX9728A | delivers up to 60mW per channel into a 32Ω load with 0.02% THD+N. An 80dB at 1kHz |
| supplies without an additional linear regulator. Comprehensive |
| suppresses audible clicks and pops at startup and shutdown. |
| Additional information: |
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| The MAX9723 stereo DirectDrive™ headphone amplifier with BassMax and volume control is |
| ideal for portable audio applications where space is at a premium and high performance is |
| essential. The MAX9723 operates from a single 1.8V to 3.6V power supply. The device |
| includes features that reduce external component count, system cost, and board space; other |
| features improve audio reproduction. The headphone amplifier uses Maxim’s patented |
| DirectDrive architecture that produces a |
| thereby eliminating the need for large |
MAX9723 | The headphone amplifiers deliver 62mW into a 16Ω load, feature low 0.006% THD+N, and |
high 90dB PSRR. The MAX9723 features Maxim’s | |
| suppression. The BassMax feature boosts the amplifier’s bass response, thus improving |
| audio reproduction when inexpensive headphones are used. The integrated volume control |
| features 32 discrete volume levels, eliminating the need for an external potentiometer. |
| BassMax and the volume control are enabled through the I2C/SMBus™ |
| Shutdown is controlled through either the hardware or software interfaces. |
| Additional information: |
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Reference Design | Maxim Integrated Products |
| Page 9 of 18 |