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.
|Number of Channels (#)|
|THD + N @ 1 kHz (%)|
|Noise Floor (RTO, 20kHz 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)|
|-40 to 85||-40 to 85||-40 to 85||-40 to 85||-40 to 85||-40 to 85||-40 to 85|
|TSSOP | 14||QFN | 20||QFN | 20||TSSOP | 14||TSSOP | 14||HTSSOP | 28||
TSSOP | 14
VQFN | 16
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