Texas Instruments LM4936
The LM4936 is a monolithic integrated circuit that provides volume control, and stereo bridged audio power amplifiers capable of producing 2W into 4Ω (1) with less than 1% THD or 2.2W into 3Ω (2) with less than 1% THD. The LM4936 incorporates a SPI or I2C Control Interface that runs the volume control, stereo bridged audio power amplifiers and a selectable gain or bass boost. All of the LM4936's features (i.e.FEATURES
1●23 Selectable SPI or I2C Control Interface
● System Beep Detect
● Stereo Switchable Bridged/Single-Ended Power Amplifiers
● Selectable Internal/External Gain and Bass Boost
● “Click and Pop” Suppression Circuitry
● Thermal Shutdown Protection Circuitry
● Headphone Sense
APPLICATIONS
● Portable and Desktop Computers● Multimedia Monitors
● Portable Radios, PDAs, and Portable TVs KEY SPECIFICATIONS
● PO at 1% THD+N – into 3Ω, 2.2W (Typ) – into 4Ω, 2.0W (Typ) – into 8Ω, 1.25W (Typ)
● Single-ended mode - THD+N at 90mW into 32Ω, 1% (Typ)
● Shutdown current, 0.7µA (Typ)
DESCRIPTION
Boomer audio integrated circuits were designed specifically to provide high quality audio while requiring a minimum amount of external components. All of the LM4936's features (i.e. SD, Mode, Mute, Gain Sel) make it optimally suited for multimedia monitors, portable radios, desktop, and portable computer applications. The LM4936 features an externally controlled, lowpower consumption shutdown mode, and...