DRV632PW Datasheet, PDF (1/19 Pages) Texas Instruments – DirectPath™, 2-VRMS Audio Line Driver With Adjustable Gain

DRV632
www.ti.com
SLOS681A – JANUARY 2011 – REVISED JULY 2013
DirectPath™, 2-VRMS Audio Line Driver With Adjustable Gain
Check for Samples: DRV632
FEATURES
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•23 Stereo DirectPath™ Audio Line Driver
– 2 Vrms Into 10 kΩ With 3.3-V Supply
• Low THD+N < 0.01% at 2 Vrms Into 10 kΩ
• High SNR, >90 dB
• 600-Ω Output Load Compliant
• Differential Input and Single-Ended Output
• Adjustable Gain by External Gain-Setting
Resistors
• Low DC Offset, <1 mV
• Ground-Referenced Outputs Eliminate DC-
Blocking Capacitors
– Reduce Board Area
– Reduce Component Cost
– Improve THD+N Performance
– No Degradation of Low-Frequency
Response Due to Output Capacitors
• Short-Circuit Protection
• Click- and Pop-Reduction Circuitry
• External Undervoltage Mute
• Active Mute Control for Pop-Free Audio On/Off
Control
• Space-Saving TSSOP Package
APPLICATIONS
• Set-Top Boxes
• Blu-ray Disc™, DVD Players
• LCD and PDP TV
• Mini/Micro Combo Systems
• Sound Cards
• Laptops
DESCRIPTION
The DRV632 is a 2-V_RMS pop-free stereo line driver
designed to allow the removal of the output dc-
blocking capacitors for reduced component count and
cost. The device is ideal for single-supply electronics
where size and cost are critical design parameters.
Designed using TI’s patented DirectPath™
technology, The DRV632 is capable of driving 2 V_RMS
into a 10-kΩ load with 3.3-V supply voltage. The
device has differential inputs and uses external gain-
setting resistors to support a gain range of ±1 V/V to
±10 V/V, and gain can be configured individually for
each channel. Line outputs have ±8-kV IEC ESD
protection, requiring just a simple resistor-capacitor
ESD protection circuit. The DRV632 has built-in
active-mute control for pop-free audio on/off control.
The DRV632 has an external undervoltage detector
that mutes the output when the power supply is
removed, ensuring a pop-free shutdown.
Using the DRV632 in audio products can reduce
component count considerably compared to
traditional methods of generating a 2-V_RMS output.
The DRV632 does not require a power supply greater
than 3.3 V to generate its 5.6-V_pp output, nor does it
require a split-rail power supply. The DRV632
integrates its own charge pump to generate a
negative supply rail that provides a clean, pop-free
ground-biased 2-V_RMS output.
The DRV632 is available in a 14-pin TSSOP.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
DirectPath, FilterPro are trademarks of Texas Instruments.
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Blu-ray Disc is a trademark of Blu-ray Disc Association.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2013, Texas Instruments Incorporated