MAX13331GEE, 规格书,Datasheet 资料.pdf

General Description The MAX13330/MAX13331 stereo headphone amplifiers are designed for automotive applications requiring out- put short-circuit and ESD protection to battery/ground with diagnostics. These devices use Maxim’s unique DirectDrive? architecture to produce a ground-refer- enced output from a single supply, eliminating the need for large DC-blocking capacitors, saving board space and component height. The gain of the amplifier is set internally (-1.5V/V) on the MAX13330 or adjusted exter- nally with resistors on the MAX13331. The MAX13330/MAX13331 deliver 120mW per channel into a 16Ω load or 135mW into a 32Ω load and have a low 0.01% THD+N. Low output impedance and the effi- cient integrated charge pump allows the device to drive loads as low as 8Ω, enabling the use of small loud- speakers. An 80dB at 217Hz PSRR allows these devices to operate from noisy digital supplies without an additional linear regulator. These devices include ±15kV Human Body Model ESD protection and short- circuit protection up to +45V at the headphone outputs. Comprehensive click-and-pop circuitry suppresses audible clicks and pops on startup and shutdown. A low-power shutdown mode reduces the supply current to 3μA (typ). The MAX13330/MAX13331 are specified from -40°C to +105°C AEC-Q100 Level 2 automotive temperature range and are available in a 16-pin QSOP package. Applications Automotive Entertainment Systems Automotive Rear Seat Entertainment Systems Features ? 4V to 5.5V Single-Supply Operation ? 2MHz Charge Pump Prevents AM Radio Interference ? Ground-Referenced Outputs Eliminate Bulky DC- Blocking Capacitors ? Short-to-Ground and Battery (VBAT up to +45V) Output Protection, Load Dump Protection ? Short-Circuit Diagnostic Output ? Adjustable Gain (MAX13331) or Fixed -1.5V/V Gain (MAX13330) ? 125mW per Channel into 32Ω at 0.01% THD+N ? Integrated Click-and-Pop Suppression ? High PSRR Eliminates LDO ? No Degradation of Low-Frequency Response Due to Output Capacitors ? ±15kV Hum