The LM49151 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. The LM49151 combines a 1.25W mono E2S class D amplifier, 125mW Class AB earpiece driver, 42mW/channel stereo ground referenced headphone drivers, volume control, input mixer/multiplexer, and speaker protection into a single device. The LM491.
National’s unique Automatic Level Control (ALC) that provides both a I2C programmable no-clip feature with Clip Controls and speaker protection. The E2S (Enhanced Emission Suppression) class D amplifier features a patented, ultra low EMI PWM architecture that significantly reduces RF emissions while preserving audio quality and efficiency while delivering 1.25W into an 8Ω load with <1% THD+N with a 5V supply. The 42mW/channel headphone drivers feature National’s ground referenced architecture that creates a ground-referenced output from a single supply, eliminating the need for bulky and expen.
The LM49151 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. T.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | LM4915 |
National Semiconductor |
Pseudo-Differential Mono Headphone Amplifier | |
2 | LM4915 |
Texas Instruments |
Pseudo-Differential Mono Headphone Amplifier | |
3 | LM49150 |
Texas Instruments |
Mono Class D Audio Subsystem | |
4 | LM49150 |
National Semiconductor |
Mono Class D Audio Subsystem | |
5 | LM49150TLEVAL |
Texas Instruments |
Mono Class D Audio Subsystem | |
6 | LM49153 |
Texas Instruments |
Mono Audio Subsystem | |
7 | LM49155 |
Texas Instruments |
Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem | |
8 | LM49155 |
National Semiconductor Corporation |
Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem | |
9 | LM4910 |
National Semiconductor |
Output Capacitor-less Stereo 35mW Headphone Amplifier | |
10 | LM4910 |
Texas Instruments |
Output Capacitor-less Stereo 35mW Headphone Amplifier | |
11 | LM49100 |
Texas Instruments |
Mono Class AB Audio Sub-System | |
12 | LM49100 |
National Semiconductor |
Mono Class AB Audio Subsystem |