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  [图文]NS数字无绳电话座机解决方案         ★★★ 【字体:
NS数字无绳电话座机解决方案
作者:NS    文章来源:本站    点击数:    更新时间:2007-3-19    

数字无绳电话技术相对于模拟电话具有众多优势:包括扩展的范围、更高的清晰度及更长的电池寿命。2.4 GHz无绳电话通过使用无线频谱中相对不拥挤的部分改善了接收效果,同时将覆盖范围增至2200英尺。其他诸如低功耗、高质量接收等特性实现了更长的通话时间及更好的语音质量。NS提供了各种音频放大器、PLL及功率管理产品,有助于延长电池寿命及通话时间。



Component Highlights

*LDOs - best-in-class dropout, excellent near-dropout PSRR, low noise, low quiescent current, and fast turn-on time provide high-quality regulation for the RF stage.

*White LED drivers - efficient, low noise, simple to drive, and produce brightness matching and color uniformity in chip-scale packaging.

*Portable Power - Battery chargers for typical battery chemicals such as Li-Ion, Ni-MH and Ni-Cd offer charging techniques like pulsed or constant current as well as voltage and temperature monitoring.

*Boomer® audio amplifiers - Options for Boomer amplifiers fulfill most audio requirements with features like single voltage supply, low THD performance, and thermal shutdown protection circuitry.

*PLL - single/dual integer and fractional PLLs from 550 Mhz up to 2.8 Ghz frequencies have low current consumption and excellent phase noise performance

*Amplifiers - Low voltage, low noise, shutdown, and excellent speed-to-power ratio achieve high bandwidths with RRIO amplifiers

1 PLL
LMX2310U
LMX2311U
LMX2312U

2 AMP
LMH6550
LMH6624
LMH6639

3 Speaker AMP
LM4665
LM4667
LM4673

4 Microcontroller
LMV225
LMV226
LMV228

5 Power
LP2995
LP2996
LP3852

6 Battery Charger
LM3655TL
LM3655TLX
LM3658SD
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