DRV632 DirectPath™, 2-VRMS Line Driver With Adjustable Gain | TI.com

DRV632 (ACTIVE)

DirectPath™, 2-VRMS Line Driver With Adjustable Gain

 

Description

The DRV632 is a 2-VRMS 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 VRMS 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-VRMS output. The DRV632 does not require a power supply greater than 3.3 V to generate its 5.6-Vpp 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-VRMS output.

The DRV632 is available in a 14-pin TSSOP.

Features

  • 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

Parametrics

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Part number Order Number of channels (#) Gain (V/V) THD + N @ 1 kHz (%) Noise floor (RTO, 20 kHz BW) (dBu) Load capacitance (µF) Slew rate (Typ) (V/us) Small-Signal bandwidth (Typ) (MHz) Supply (Min) (V) Supply (Max) (V) Iq (Typ) (mA) Operating temperature range (C) Package Group
DRV632 Order now 2     Adjustable     0.002     110.9       4.5     8     3     3.6     14     -40 to 85     TSSOP | 14    
DRV600 Order now 2     Fixed     0.04     122.7     400e-6     2.2     3.2     1.8     4.5     8     -40 to 85     QFN | 20    
DRV601 Order now 2     Adjustable     0.008     113.3     300e-6     2.2     3.2     1.8     4.5     8     -40 to 85     QFN | 20    
DRV602 Order now 2     Adjustable     0.01     102.8     220e-6     4.5     8     3     5.5     11     -40 to 85     TSSOP | 14    
DRV603 Order now 2     Adjustable     0.001     126.7     220e-6     4.5     8     3     5.5     11     -40 to 85     TSSOP | 14    
DRV604 Order now 4     Adjustable     0.001     122.7     220e-6     4.5     8     3     3.7     11     -40 to 85     HTSSOP | 28    
DRV612 Order now 2     Adjustable     0.007     108.6     220e-6     4.5     8     3     3.6     14     -40 to 85     TSSOP | 14
VQFN | 16