The MAX13335E / MAX13336E are high-fidelity stereo audio input amplifiers designed for automotive applications requiring audio-level detection and / or jack sensing capabilities. The device has dual-channel, low-noise, programmable gain amplifiers that accept fully differential and quasi The differential input signal with diagnostic function is controlled by the I²C interface. MAX13325 / MAX13326 audio transmitters, in automotive electronics systems, form a complete differential audio link device. The audio receiver can also have a high common mode rejection ratio (CMRR) (80 dB) for each channel of the device to restore audio at There is a noise signal in the automotive environment with a large common mode. The integrated programmable gain amplifier 14 dB to 16 dB (MAX13335E) and 22 dB to 8 dB (MAX13336E) adjustable zero-crossing detection provides an optimal output signal level and limits zip noise. Flexible external diagnostic input can be configured to perform jack sensing function to detect short circuit of battery, short to ground, open load, shorts between channels. The audio input is to the ISO 10605 standard ± 15kV air gap and protection ± 8kV contact discharge ESD pulse. Both devices have an operating temperature range of -40 to 105 ° C ° C and are packaged in a 16-pin QSOP.
Key features
+3.3 V or +5 V operating voltage
+28 V to-16V, maximum input
Wide common-mode input voltage range (5V to 11.5 V)
Fully differential input to 7V RMS
Quasi-differential input to 3.5V RMS
Audio presence detection
Jack sense detection
Diagnostic capabilities
Programmable gain for zero-crossing detection
I ² C control interface
Automotive grade ESD protection
ISO 10605 ± 15kV air gap
± 8kV contact discharge
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