參數(shù)資料
型號: MCP3421A0T-E/OT
廠商: Microchip Technology
文件頁數(shù): 30/30頁
文件大?。?/td> 0K
描述: IC ADC 18BIT 3.75SPS 1CH SOT23-6
標(biāo)準(zhǔn)包裝: 1
位數(shù): 18
采樣率(每秒): 3.75
數(shù)據(jù)接口: I²C,串行
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 單電源
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: SOT-23-6
供應(yīng)商設(shè)備封裝: SOT-23-6
包裝: 標(biāo)準(zhǔn)包裝
輸入數(shù)目和類型: 2 個單端,雙極;1 個差分,單極
配用: MCP3421EV-ND - BOARD EVAL FOR MCP3421 SOT23-6
其它名稱: MCP3421A0T-E/OTDKR
2006 Microchip Technology Inc.
DS22003B-page 9
MCP3421
4.8
Aliasing and Anti-aliasing Filter
Aliasing occurs when the input signal contains time-
varying signal components with frequency greater than
half the sample rate. In the aliasing conditions, the
device can output unexpected output codes. For
applications that are operating in electrical noise
environments, the time-varying signal noise or high
frequency interference components can be easily
added to the input signals and cause aliasing. Although
the MCP3421 device has an internal first order sinc
filter, its’ filter response may not give enough
attenuation to all aliasing signal components. To avoid
the aliasing, an external anti-aliasing filter, which can
be accomplished with a simple RC low-pass filter, is
typically used at the input pins. The low-pass filter cuts
off the high frequency noise components and provides
a band-limited input signal to the MCP3421 input pins.
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