LM48311TL/NOPB
Active2.6-W, MONO, ANALOG INPUT CLASS-D AUDIO AMPLIFIER WITH 6 DB FIXED GAIN
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LM48311TL/NOPB
Active2.6-W, MONO, ANALOG INPUT CLASS-D AUDIO AMPLIFIER WITH 6 DB FIXED GAIN
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM48311TL/NOPB |
|---|---|
| Features | Differential Inputs, Depop, E2S, Shutdown, Short-Circuit Protection |
| Max Output Power x Channels @ Load | 2.6 W |
| Max Output Power x Channels @ Load [custom] | 1 |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | 1-Channel (Mono) |
| Package / Case | DSBGA, 9-WFBGA |
| Supplier Device Package | 9-DSBGA |
| Type | Class D |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 2.4 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.29 | |
| 10 | $ 2.05 | |||
| 25 | $ 1.94 | |||
| 100 | $ 1.65 | |||
| Digi-Reel® | 1 | $ 2.29 | ||
| 10 | $ 2.05 | |||
| 25 | $ 1.94 | |||
| 100 | $ 1.65 | |||
| Tape & Reel (TR) | 250 | $ 1.55 | ||
| 500 | $ 1.36 | |||
| 750 | $ 1.22 | |||
| 1250 | $ 1.12 | |||
| 1750 | $ 1.18 | |||
| 2500 | $ 1.05 | |||
| 6250 | $ 1.01 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.89 | |
| 100 | $ 1.56 | |||
| 250 | $ 1.12 | |||
| 1000 | $ 0.84 | |||
Description
General part information
LM48311 Series
The LM48311 is a single supply, high efficiency, mono, 2.6W, filterless switching audio amplifier. The LM48311 features Texas Instruments' Enhanced Emissions Suppression (E2S) system, that features a unique patent-pending ultra low EMI, spread spectrum, PWM architecture, that significantly reduces RF emissions while preserving audio quality and efficiency. The E2S system improves battery life, reduces external component count, board area consumption, system cost, and simplifying design.
The LM48311 is designed to meet the demands of portable multimedia devices. Operating from a single 5V supply, the device is capable of delivering 2.6W of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V. The LM48311 features both a spread spectrum modulation scheme, and an advanced, patented edge rate control (ERC) architecture that significantly reduces emissions, while maintaining high quality audio reproduction (THD+N = 0.03%) and high efficiency (η = 88%).
The LM48311 features high efficiency compared to conventional Class AB amplifiers, and other low EMI Class D amplifiers. When driving and 8Ω speaker from a 5V supply, the device operates with 88% efficiency at PO= 1W. The gain of the LM48311 is internally set to 6dB, further reducing external component count. A low power shutdown mode reduces supply current consumption to 0.01µA.
Documents
Technical documentation and resources