Features
| • | Mono and stereo inputs |
| • | Thermal Overload Protection |
| • | True-ground Headphone Drivers |
| • | I
2C 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 GR package |
| • | RF Suppression |
Key Specification
| ■
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
|
General Description
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. More...
Applications
| • | Mobile Phones |
| • | PDAs |
| • | Laptops |
| • | Portable Electronics |
| |
Typical Application
*click for larger image
| Parameters | Values |
|---|
| Power@ 8Ohms, 10% THD |
0.525 Watt |
| Power@ 8Ohms, 1% THD |
0.425 Watt |
| THD |
0.2 % |
| PSRR |
90 dB |
| Channels |
3 Channels |
| THD Conditions |
Headphone mode 4, f=1kHz, RL=32ohm, Pout=25mW |
| PSRR Conditions |
LS, Modes 1, 2, 10 |
| User Supply |
3.6 Volt |
| Capless Headphone |
No |
| ClassD Driver |
No |
| Interface |
I2C |
| Stereo Inputs |
2 |
| Digital Volume Control Max |
18 dB |
| Digital Volume Control Min |
-54 dB |
| Output Modes |
10 |
| Supply Range |
+2.7 - +5.5 V |
| Mono Inputs |
2 |
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
| Loudspeaker Type |
Class AB |
| Headphone Type |
True Ground |
| Loudspeaker Outputs |
2 |
Typical Performance
click for larger image
| |
Additional Resources
Design Tools
Connection Diagram
*click for larger image
|
RoHS Compliance Information
