PDF
| Part Number(s) (NSID) |
Top View | Type | Pins | MSL Rating | Peak Reflow | RoHS Status |
CAD Symbols | Models | Package Marking Format |
|---|---|---|---|---|---|---|---|---|---|
| LM49200TL/NOPB |
MICRO SMD | 20 | 1 | 260 | Detail | N/A | N/A |
XYTT I GL3 |
|
| LM49200TLX/NOPB |
MICRO SMD | 20 | 1 | 260 | Detail | N/A | N/A |
XYTT I GL3 |
Description
The LM49200 is a fully integrated audio subsystem with a stereo power amplifier capable of delivering 500mW of continuous average power per channel into 8Ω with 1% THD+N using a 3.3V supply. The LM49200 includes a separate stereo headphone amplifier that can deliver 35mW per channel into 32Ω.
The LM49200 has three input channels. A pair of single-ended inputs and a fully differential input channel. The LM49200 features a 32-step digital volume control on the input stage and an 8-step digital volume control on the headphone output stage.
The digital volume control and output modes are programmed through a two-wire I
The LM49200 is designed for cellular phone, PDA, and other portable handheld applications. The high level of integration minimizes external components. The True Ground headphone amplifier eliminates the physically large DC blocking output capacitors reducing required board space and reducing cost.
| • | Portable electronic devices |
| • | Mobile Phones |
| • | PDAs |
| • | Differential mono input and stereo single-ended input |
| • | 32-step digital volume control (-80 to +18dB) |
| • | Three independent volume channels (Left, Right, Mono) |
| • | Separate headphone volume control |
| • | Flexible output for speaker and headphone output |
| • | True Ground headphone amplifier eliminates large DC blocking capacitors reducing PCB space and cost |
| • | Receiver pass-through capability |
| • | Soft enable function |
| • | RF immunity topology |
| • | “Click and Pop” suppression circuitry |
| • | Thermal shutdown protection |
| • | Micro-power shutdown |
| • | I |
| • | Available in space-saving microSMD package |
Diagrams
Typical Application
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Connection Diagram
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Typical Performance  |
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