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NMUX1309PW-Q100 PDF预览

NMUX1309PW-Q100

更新时间: 2024-04-09 18:58:44
品牌 Logo 应用领域
安世 - NEXPERIA /
页数 文件大小 规格书
23页 332K
描述
1.5 V to 5.5 V, dual 4-channel switch analog multiplexer and demultiplexer with injection-current controlProduction

NMUX1309PW-Q100 数据手册

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Nexperia  
NMUX1309-Q100  
1.5 V to 5.5 V, dual 4-channel switch analog multiplexer and demultiplexer with injection-current control  
8. Functional description  
Table 4. Function table  
H = HIGH voltage level; L = LOW voltage level; X = don’t care.  
Input  
Channel ON  
E
L
L
L
L
H
S1  
L
S0  
L
nY0 to nZ  
nY1 to nZ  
nY2 to nZ  
nY3 to nZ  
-
L
H
L
H
H
X
H
X
8.1. Overview  
The NMUX1309-Q100 is a general purpose analog switch with a 2 poles, each of which can  
be configured to select between one of four possible connection paths (2x SP4T). Each analog  
connection path is bi-directional, with similar electrical characteristics independent of the direction  
of signal propagation.  
8.2. Key features  
Injection current control  
Current injection can occur in systems where an analog voltage can experience transient spikes  
due to signal propagation over long distances with high inductance. Voltage exposure above the  
supply voltage will source excessive current into an analog input, which is referred to as positive  
injection. Voltage exposure below the ground voltage will sink excessive current from an analog  
input, which is referred to as negative injection. Both types of injection current elevate the risk of  
device damage to an analog input and can introduce a large voltage error to the analog signal  
itself.  
The NMUX1309-Q100 mitigates both risks by integrating an injection current control circuit to  
divert both positive injection and negative injection through a bypass FET that connects to GND.  
This implementation minimizes any shift in the supply voltage, therefore minimizing any shift in  
the device's ON Resistance, and thus minimizes changes in the measured analog voltage. The  
injection current control circuit is active on all analog pins, independent of whether the channel is  
selected/unselected.  
1.8 V Compatible digital logic thresholds  
It is common for modern systems to operate digital signals from lower voltage nodes such as 1.8 V,  
while operating their analog signals at higher voltage nodes such as 3.3 V or 5.0 V. To remove the  
requirements for a voltage translation device, the NMUX1309-Q100 digital control pins maintain 1.8  
V logic compatible thresholds at higher operating voltages, up to 5.5 V.  
Ioff protection circuitry of digital inputs  
The NMUX1309-Q100 implements Ioff protection circuitry on the digital control pins, isolating those  
pins from the internal circuits when the supply is unpowered (i.e., VCC = 0 V). The ESD protection  
diodes on the digital input pins do not have a connection path to VCC. If the digital input pins are  
biased when the VCC pin is unpowered:  
1. The high impedance of the digital input pins minimizes input current leakage.  
©
NMUX1309_Q100  
All information provided in this document is subject to legal disclaimers.  
Nexperia B.V. 2024. All rights reserved  
Product data sheet  
Rev. 1.1 — 21 February 2024  
5 / 23  
 
 
 

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