The DRV612 is a single-ended, 2-Vrms stereo line driver designed to reduce component
count, board space, and cost. It is ideal for single-supply electronics where size and cost are
critical design parameters.
The DRV612 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 DRV612 device is designed using TIs patented DirectPath technology, which integrates
a charge pump to generate a negative supply rail that provides a clean, pop-free ground-biased
output. The DRV612 is capable of driving 2 Vms into a 600-Ω load. DirectPath technology also allows
the removal of the costly output dc-blocking capacitors.
The device has fixed-gain single-ended inputs with a gain-select pin. Using a single
resistor on this pin, the designer can choose from 13 internal programmable gain settings to match
the line driver with the codec output level. The device also reduces the component count and board
Line outputs have ±8-kV HBM ESD protection, enabling a simple ESD protection circuit. The
DRV612 has built-in active mute control with more that 80-dB attenuation for pop-free mute on/off
The DRV612 is available in a 14-pin TSSOP and 16-pin VQFN. For a footprint-compatible
stereo headphone driver, see the TPA6139A2.
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