LM48100Q Mono, 1.3 W Audio Power Amplifier

Texas Instruments offers its LM48100Q mono, 1.3 W audio power amplifier with output fault detection and volume control

Image of Texas Instruments' LM48100Q Mono, 1.3 W Audio Power AmplifierTexas Instruments' LM48100Q is a single supply, mono, bridge-tied 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 LM48100Q 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.

The LM48100Q features dual audio inputs that can be mixed/multiplexed to the device output. Each input path has its own independent, 32-step volume control. The mixer, volume control, and device mode select are controlled through an I2C compatible interface. An open drain FAULT output indicates when a fault has occurred. Comprehensive output short circuit and thermal overload protection prevent the device from being damaged during a fault condition.

A low power shutdown mode reduces supply current consumption to 0.01 µA. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. The LM48100Q is available in an 14-pin TSSOP package.

Typical Application Diagram

  • Output fault detection
  • I2C volume and mode control
  • Input mixer/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 TSSOP package
  • Automotive instrument clusters
  • Hands-free car kits
  • Medical

LM48100Q Mono 1.3 W Audio Power Amplifier

ImageManufacturer Part NumberDescriptionAvailable Quantity
LM48100QMHE/NOPB datasheet linkIC AMP AUDIO PWR 1.6W 14ETSSOPLM48100QMHE/NOPBIC AMP AUDIO PWR 1.6W 14ETSSOP1715 - Immediate
10000 - Factory Stock
LM48100QMHE/NOPB product page link
Published: 2009-01-29