ZHCS030C January 2011 – August 2019 DRV632
PRODUCTION DATA.
Combining the TI's patented DirectPath technology with the built-in click and pop reduction circuit, the DRV632 is a 2-VRMS pop-free stereo line driver designed to avoid the use of the output DC-blocking capacitors, resulting in reduced component count and cost. The DRV632 is capable of driving 2-VRMS into a line load of 600 Ω to 10 kΩ with a 3.3-V supply voltage. The use of charge-pump flying, PVSS, and decoupling capacitors ensure the performance of the amplifier. The device has two channels with differential inputs that require DC input-blocking capacitors to block the DC portion of the audio source. These allow the DRV632 inputs to be properly biased to provide maximum performance. The DRV632 allows external gain-setting resistors to support a gain range of ±1 V/V to ±10 V/V. The gain can be configured individually for each channel. Additionally, both channels can be used as a second-order filter when the removal of out-of-band noise is required. The DRV632 has a built-in active-mute control for pop-free audio on/off, and avoids the click and pop generation by using external undervoltage detection. The device does not generate a pop or click when the power supply is removed or placed.