Datasheet Maxim MAX98396EWB+ — 数据表

EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX98396 20V Digital Input Class-DG Amplifier with I/V
Sense and Brownout Prevention General Description Benefits and Features The MAX98396 is a high-efficiency, mono Class-DG
speaker amplifier with industry-leading quiescent power
featuring I/V sense, brownout-prevention engine (BPE),
and dynamic-headroom tracking (DHT). The IC enables
ultrasound applications by providing support for sample
rates up to 192kHz, a higher passband (for fs > 50kHz),
and a bypass path for the ultrasound signals through the
amplifier so it is not attenuated by the audio processing.
Precision output current and voltage monitoring (I/V
sense) enables the host device to run speaker protection
algorithms. Spread-spectrum modulation (SSM) and edge
rate control minimize EMI and eliminate the need for the
output filtering found in traditional Class-D devices. ● Wide Input Supply Range (3.0V to 20V)
● Class-DG Operation Enables Industry-Leading
Quiescent Power
• 12.7mW at VPVDD = 12V , VVBAT = 3.8V
• 18mW at VPVDD = 19V, VVBAT = 5.0V To achieve industry-leading quiescent power, the ClassDG amplifier employs two supply rails VBAT (3V to 5.5V)
and PVDD (3V to 20V) to supply the speaker amplifier.
The Class-DG amplifier switches between the two supply
rails depending on the input signal level and/or the supply
headroom. The brownout-prevention engine in the device
allows it to reduce its contribution to the overall system …