2-Vrms DirectPath™; pop-free line driver & headphone amp with adjustable gain


Product details


Gain (V/V) Adjustable Iq (Typ) (mA) 11 Load capacitance (µF) 2.20E-04 Number of channels (#) 4 THD + N @ 1 kHz (%) 0.001 Noise floor (RTO, 20 kHz BW) (dBu) 122.7 Slew rate (Typ) (V/us) 4.5 Small-Signal bandwidth (Typ) (MHz) 8 Operating temperature range (C) -40 to 85 open-in-new Find other Audio line drivers

Package | Pins | Size

HTSSOP (PWP) 28 43 mm² 9.7 x 4.4 open-in-new Find other Audio line drivers


  • DirectPath™
    • Eliminates Pop/Clicks
    • Eliminate Output DC-Blocking Capacitors
  • 3.0V to 3.7V Supply Voltage
  • Low Noise and THD
    • SNR > 109dB
    • Typical Vn < 7µVrms 20–20kHz
    • THD+N < 0.002% at 10k
  • Output Voltage into 5k Load
    • 2Vrms at 3.3V Supply Voltage
  • Stereo DirectPath™ Headphone:
    • 40mW into 32 at 3.3V Supply Voltage
    • 16 to ∞ Stable Load Range
  • Differential Input
  • Power Sense UVP for Brown Out Protection
  • Short Circuit and Thermal Protection
  • ±8kV IEC ESD Protection
  • Footprint Compatible with DRV602 and DRV603
  • Supports Dual Line Driver Configuration
    • LCD and PDP TV
    • Blu-ray Disc™, DVD Players
    • Mini/Micro Combo Systems
    • Soundcards

DirectPath, FilterPro are trademarks of Texas Instruments.
Blu-ray Disc is a trademark of Blu-ray Disc Association.

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The DRV604 is a 2Vrms Pop-Free stereo line driver with stereo headphone output 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 DRV604 is capable of driving 2 Vrms into a 5k load. The headphone output can generate a clean 40mW into 32 load from a 3.3V supply. The device has differential inputs and uses external gain setting resistors that supports a gain range of –1V/V to –10V/V. Headphone and line outputs have ±8kV IEC ESD protection enabling a simple ESD protection circuit. The DRV604 has built-in enable control for pop-free on/off control. DRV604 can monitor an external supply voltage using its built in comparator enabling it to shut down during a brown out condition before up stream audio DAC’s can produce click and pop artifacts.

Using the DRV604 in audio products can reduce component count considerably compared to traditional methods of generating headphone output and 2Vrms output. The DRV604 does not require a power supply greater than 3.3V to generate its 5.6Vpp output, nor does it require a split rail power supply. The DRV604 integrates its own charge pump to generate a negative supply rail that provides a clean, pop-free ground biased 2Vrms output.

The DRV604 is available in a 28-pin HTSSOP. For a stereo line driver with no HP amp see DRV603.

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Similar products you might be interested in
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Similar but not functionally equivalent to the compared device:
DRV603 ACTIVE 3-Vrms DirectPath™; pop-free, variable input gain line driver with trimmed DC offset This product is a higher output voltage (3 Vrms) line driver with no distinct headphone jack
TPA6132A2 ACTIVE 25-mW, stereo, analog input headphone amplifier in WQFN This product is a lower power (40 mW) headphone amp only

Technical documentation

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Type Title Date
* Datasheet DirectPath 2Vrms Line Driver and HP Amp with Adjustable Gain datasheet (Rev. A) Apr. 16, 2010
Application note DAC Post-Filter Design Based on DRV6xx Family (Rev. A) Nov. 23, 2010
User guide DRV604PWPEVM User Guide Dec. 23, 2009

Design & development

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Hardware development

document-generic User guide

The DRV604PWPEVM customer evaluation module demonstrates the DRV604PWP integrated circuit (IC)from Texas Instruments (TI).

The DRV604PWP is a 2Vrms Pop-Free stereo line driver with a stereo headphone driver designed to allow the removal of the output DC-blocking capacitors for reduced component count (...)

  • 4-channel evaluation module (double-sided, plated-through PCB layout)
  • Up to 2-Vrms line output
  • Single-ended analog input and output
  • Output capacitor less
  • Shutdown button

Design tools & simulation

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  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

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HTSSOP (PWP) 28 View options

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