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Details, datasheet, quote on part number:LM4671ITLX
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| Part: | LM4671ITLX |
| Category: | Data Conversion => ADC (Analog to Digital Converters) => 10-14 bit => 12 bit |
| Description: | Filterless High Efficiency 2.5W Switching Audio Amplifier
The LM4671 is a single supply, high efficiency 2.5W switching audio amplifier. A low noise, filterless PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.
The LM4671 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4 speaker load at a continuous average output of 2.1W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.
The LM4671 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3V supply driving an 8 speaker, the IC's efficiency for a 100mW power level is 80%, reaching 88% at 400mW output power.
The LM4671 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).
The gain of the LM4671 is externally configurable which allows independent gain control from multiple sources by summing the signals.
Features
No output filter required for inductive loads
Externally configurable gain
Very fast turn on time: 1ms (typ)
Minimum external components
"Click and pop" suppression circuitry
Micro-power shutdown mode
Available in space-saving microSMD package
Key Specification
Efficiency at 3.6V, 100mW into 8 speaker 80% (typ)
Efficiency at 3.6V, 400mW into 8 speaker 88% (typ)
Efficiency at 5V, 1W into 8 speakerr 86% (typ)
Quiescent current, 3.6V supply 2.8mA (typ)
Total shutdown power supply current 0.01ľA (typ)
Single supply range 2.4V to 5.5V
Applications
Mobile phones
PDAs
Portable electronic devices |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM4671ITLX datasheet File size : 993 kB |
| Request For quote: | Find where to buy LM4671ITLX
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