1.3-W Audio Power Amplifier
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LM48100Q-Q1
SNAS470E – OCTOBER...
Description
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LM48100Q-Q1
SNAS470E – OCTOBER 2008 – REVISED NOVEMBER 2015
LM48100Q-Q1 Boomer™ Mono, 1.3-W Audio Power Amplifier With Output Fault Detection and Volume Control
1 Features
1 Output Fault Detection I2C Volume and Mode Control Input Mixer and Multiplexer High PSRR Individual 32-Step Volume Control Short Circuit and Thermal Protection Advanced Click-and-Pop Suppression Low-Power Shutdown Mode Available in 14-Pin HTSSOP Package Key Specifications:
– Output Power at VDD = 5 V, RL = 8 Ω, THD+N ≤ 1% 1.3 W (Typical)
– Quiescent Power Supply Current at 5 V, 6 mA (Typical)
– PSRR at 1 kHz 74 dB (Typical) – Shutdown current 0.01 μA (Typical)
2 Applications
Automotive Instrument Clusters Hands-Free Car Kits Medical
3 Description
The LM48100Q-Q1 is a single supply, mono, bridgetied load amplifier with I2C volume control, ideal for automotive applications. A comprehensive output fault detection system senses the load conditions, protecting the device during short circuit events, as well as detecting open circuit conditions.
Operating from a single 5-V supply, the LM48100QQ1 delivers 1.3 W of continuous output power to an 8 Ω load with < 1% THD+N. Flexible power supply requirements allow operation from 3 V to 5.5 V. High power supply rejection ratio (PSRR), 74 dB at 1 kHz, allows the device to operate in noisy environments without additional power supply conditioning.
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