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| MUX508 Datasheet, PDF (24/37 Pages) Texas Instruments – Low-Capacitance, Low-Charge-Injection, Precision, Analog Multiplexers | |||
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MUX508, MUX509
SBAS758A â JANUARY 2016 â REVISED MARCH 2016
Feature Description (continued)
2
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1
VDD = 15 V
VSS = ±15 V
0
±1
±2
±15
±10
VDD = 10 V
VSS = ±10 V
±5
0
5
Source Voltage (V)
VDD = 12 V
VSS = 0 V
10
15
C025
Figure 39. Source-to-Drain Charge Injection vs Source or Drain voltage
The drain-to-source charge injection becomes important when the device is used as a demultiplexer (demux),
where D becomes the input and Sx becomes the output. Figure 40 shows the drain-to-source charge injection
across the full signal range.
9
6
VDD = 15 V
VSS = ±15 V
3
VDD = 10 V
VSS = ±10 V
0
±3
VDD = 12 V
VSS = 0 V
±6
±9
±15
±10
±5
0
5
Drain voltage (V)
10
15
C011
Figure 40. Drain-to-Source Charge Injection vs Source or Drain voltage
9.3.3 Bidirectional Operation
The MUX50x are operable as both a mux or demux. The source (Sx, SxA, SxB) and drain (D, DA, DB) pins of
the MUX50x are used either as input or output. Each MUX50x channel has very similar characteristics in both
directions.
24
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