LM4667MMBD: 1.3W @ 8Ω, 2.7 ~ 5V, Class D
Summary
The LM4667 is a fully integrated 1.3W, single-supply high efficiency (Class D) switching audio amplifier. It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers.
The LM4667 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.
This LM4667MMBD is an evaluation board designed to ease the evaluation and effort during the development of a circuit using the LM4667MM. It is an easy to use stand-alone board that requires power and GND, an input signal and an output load.
Specifications
| Manufacturer | Texas Instruments |
|---|---|
| Category | Audio Amplifiers |
| Eval Board Part Number | LM4667MMBD/NOPB-ND |
| Eval Board Supplier | Texas Instruments |
| Eval Board |
Board not Stocked
|
| Amplifier Type |
Class D
|
| Number of Outputs |
Mono
|
| Output Power (RMS) @ Load |
1.3 W @ 8 Ω
|
| Voltage In |
2.7 ~ 5.5 V
|
| THD+N (1kHz) @ Conditions |
< 0.8% @ 0.1 W (8 Ω, 5V)
|
| Features |
Digital Gain
Noise Filtering, On-Chip Short Circuit Protection Shutdown, Enable, Standby |
| Efficiency @ Conditions |
>85%, 0.7 ~ 1.3 W @ 8 Ω , 5V
>80%, 300 ~ 450 mW @ 8 Ω , 3V >75%, 400 ~ 750 mW @ 4 Ω , 3V |
| Standby Current [Typical] |
10 nA
|
| Quiescent Current [Typical] |
3.75 mA (3V), 9 mA (5V)
|
| Component Count + Extras |
9 + 6
|
| Application / Target Market |
Cell Phones
Portable Devices Tablets |
| Design Author |
Texas Instruments
|
| Main I.C. Base Part |
LM4667
|
| Quiescent Current [Maximum] |
5 mA
|
| Standby Current [Maximum] |
2 µA
|
| Date Created By Author | 2004-05 |
| Date Added To Library | 2013-03 |
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