Texas Instruments LM49100
The LM49100 is a fully integrated audio subsystem capable of delivering 1.275W of continuous average power into a mono 8Ω bridged-tied load (BTL) with 1% THD+N and with a 5V power supply. The LM49100 also has a stereo true-ground headphone amplifier capable of 50mW per channel of continuous average power into a 32Ω single-ended (SE) loads with 1% THD+N. The LM49100 has three input channels.| Part No. | LM49100 |
|---|---|
| Datasheet | LM49100 Download |
| Manufacturer |  Texas Instruments |
| Description | Mono Class AB Audio Sub-System |
| Buy | Stock & Price |
FEATURES
1●2 Mono and Stereo Inputs
● Thermal Overload Protection
● True-Ground Headphone Drivers
● I2C Control Interface
● Input Mute Attenuation
● 2nd Stage Headphone Attenuator
● 32-Step Digital Volume Control
● 10 Operating Modes
● Minimum External Components
● Click and Pop Suppression
● Micro-Power Shutdown
● Available in Space-Saving 3mm x 3mm 25-Bump csBGA Package
● RF Suppression KEY SPECIFICATIONS
● Power Output at VDD = 5V: – Loudspeaker (LS): – RL = 8Ω, THD+N ≤: 1% 1.275W – Headphone (VDDHP = 2.8V): – RL = 32Ω, THD+N ≤ 1%: 50mW
● Shutdown current 0.01μA
APPLICATIONS
● Mobile Phones● PDAs
● Laptops
● Portable Electronics
DESCRIPTION
The LM49100 has three input channels. One pair of SE inputs can be used with a stereo signal. The other input channel is fully differential and may be used with a mono input signal. The LM49100 features a 32-step digital volume control and ten distinct output modes. The mixer, volume control, and device mode select are controlled through an I2C compatible interface.
