描述 Description

The NCN1154 is a DP3T switch for combined true-ground audio, USB 2.0 high speed data, and UART applications. It allows portable systems to use a single port to pass either USB data or audio signals from an external headset; the 3 channels being compliant to USB 2.0, USB 1.1 and USB 1.0. The switch is capable of passing signals with negative voltages as low as 2 V below ground. The NCN1154 features shunt resistors on the audio ports. These resistors are switched in when the audio channel is off and provide a safe path to ground for any charge that may build up on the audio lines. This reduces Pop & Click noise in the audio system. The device has an extended VCC range which can operate off VCC up to 4.2 V while passing true ground audio signals down to -2 V.

特性 Features

? 3:1 High Speed Switch
? Multiplexe audio or high speed data or UART signals path from a single USB receptacle
? 5.25 V tolerant on common pins
? Support any short to VBUS
? High Bandwidth of 820 MHz
? USB2.0, USB1.1, USB1.0 capable on all channels
? Capable of passing negative swing signals down to -2V on R/L channel
? Can connect an audio true ground amplifier to a micro USB headset
? 1.8 V compatible control pin
? GPIO Low Voltage Control
? Audio channel shunt resistors
? Pop and click noise reduction
? Ultra-low THD
? Minimal audio distortion

應(yīng)用 Application

? Shared High Speed data or audio on a single connector
? Micro or Mini USB applications
? GPS
? Cellular and wireless phones
? Tablets and Portable gaming
? Bar Code Scanners

簡介

NCN1154屬于開發(fā)板套件編程器的評估演示板及套件。由制造生產(chǎn)的NCN1154評估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過驗(yàn)證的實(shí)施環(huán)境中評估某些重點(diǎn)器件的性能或特性。評估方法通常有完善的文檔說明，并且視乎具體情況由評估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點(diǎn)器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對于數(shù)量特別多或類別獨(dú)特的器件類別(如 ADC、DAC 和開關(guān)模式電源)，評估平臺(tái)可組合為一個(gè)單獨(dú)的產(chǎn)品系列。