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MAX9723EBE-T Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX9723EBE-T Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 23 page General Description The MAX9723 stereo DirectDrive™ headphone amplifier with BassMax and volume control is ideal for portable audio applications where space is at a premium and per- formance is essential. The MAX9723 operates from a sin- gle 1.8V to 3.6V power supply and includes features that reduce external component count, system cost, board space, and improves audio reproduction. The headphone amplifier uses Maxim’s patented DirectDrive architecture that produces a ground-refer- enced output from a single supply, eliminating the need for large DC-blocking capacitors. The headphone ampli- fiers deliver 62mW into a 16 Ω load, feature low 0.006% THD+N, and high 90dB PSRR. The MAX9723 features Maxim’s industry-leading click-and-pop suppression. The BassMax feature boosts the bass response of the amplifier, improving audio reproduction when using inexpensive headphones. The integrated volume con- trol features 32 discrete volume levels, eliminating the need for an external potentiometer. BassMax and the volume control are enabled through the I2C*/SMBus™- compatible interface. Shutdown is controlled through either the hardware or software interfaces. The MAX9723 consumes only 3.7mA of supply current at 1.8V, provides short-circuit and thermal-overload protection, and is fully specified over the extended -40°C to +85°C temperature range. The MAX9723 is available in a tiny (2mm x 2mm x 0.62mm) 16-bump chip-scale package (UCSP™) or 16-pin thin QFN (4mm x 4mm x 0.8mm) package. Applications Features ♦ 62mW, DirectDrive Headphone Amplifier Eliminates Bulky DC-Blocking Capacitors ♦ 1.8V to 3.6V Single-Supply Operation ♦ Integrated 32-Level Volume Control ♦ High 90dB PSRR at 1kHz ♦ Low 0.006% THD+N ♦ Industry-Leading Click-and-Pop Suppression ♦ ±8kV HBM ESD-Protected Headphone Outputs ♦ Short-Circuit and Thermal-Overload Protection ♦ Low-Power Shutdown Mode (5µA) ♦ Software-Enabled Bass Boost (BassMax) ♦ I2C/SMBus-Compatible Interface ♦ Available in Space-Saving, Thermally Efficient Packages: 16-Bump UCSP (2mm x 2mm x 0.62mm) 16-Pin Thin QFN (4mm x 4mm x 0.8mm) Stereo DirectDrive Headphone Amplifier with BassMax, Volume Control, and I2C ________________________________________________________________ Maxim Integrated Products 1 I2C INTERFACE VOLUME CONTROL BassMax BassMax 1.8V TO 3.6V SUPPLY SCL BBL OUTL BBR OUTR SDA INL INR MAX9723 Σ Σ Block Diagram Ordering Information 19-3509; Rev 1; 11/05 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. PART** TEMP RANGE PIN- PACKAGE PKG CODE MAX9723_EBE-T* -40°C to +85°C 16 UCSP-16 B16-1 MAX9723_ETE+ -40°C to +85°C 16 TQFN T1644-4 *Purchase of I2C components from Maxim Integrated Products, Inc. or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these com- ponents in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. SMBus is a trademark of Intel Corp. UCSP is a trademark of Maxim Integrated Products, Inc. **Replace the ‘_’ with the one-letter code that denotes the slave address and maximum programmable gain. See the Selector Guide. +Denotes lead-free package. *Future product—contact factory for availability. Pin Configurations appear at end of data sheet. PDA Audio Portable CD Players Mini Disc Players Automotive Multimedia MP3-Enabled Cellular Phones MP3 Players PART SLAVE ADDRESS MAXIMUM GAIN (dB) MAX9723A 1001100 0 MAX9723B 1001101 0 MAX9723C 1001100 +6 MAX9723D 1001101 +6 Selector Guide |
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