HWD2038

CS2 DATA SHEET HWD2038 —— Mono 2W Audio Power Amplifiers with DC Volume Control z General Description ---The HWD2038 is a monolithic integrated circuit that provides DC volume control, and mono bridged audio power amplifiers capable of producing 2W into 4Ωwith less than1.0% THD or 2.2W into 3Ω with less than 1.0%THD. ---The HWD2038 is designed specifically to provide high quality audio from a surface mount package while requiring few external components. It incorporates a DC volume control that consists of 31 steps that are individually selected by a variable DC voltage level on the volume control pin. The range of the steps are from 0dB - 78dB. Each gain step corresponds to a specific input voltage range. ---The HWD2038 features an externally controlled, low-power consumption shutdown mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on. z Key Specifications ·PO at（1％ THD＋N） ·Shutdown current z Features into 3Ω into 4Ω into 8Ω 2.2W （typ） 2.0W （typ） 1.1W （typ） 0.7 uA（typ） ·DC Volume Control Interface ·Stereo switchable bridged ·No output coupling capacitors, or snubber circuits required ·“Click and pop” suppression circuitry ·Thermal shutdown protection circuitry ·TSSOP-20 packaging z Applications ·Portable and Desktop Computers ·Multimedia Monitors ·Portable Radios, PDAs, and Portable TVs Rev1.1 -1- 100524 CS2 z Operating Ratings（Note 1） ·Temperature Range ·Supply Voltage z Typical Application DATA S...