MUX506 Datasheet, PDF (26/38 Pages) Texas Instruments – 36-V, Low-Capacitance, Low-Leakage-Current, Precision Analog Multiplexers

MUX506, MUX507
SBAS803 – NOVEMBER 2016
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Feature Description (continued)
The MUX50x have special charge-injection cancellation circuitry that reduces the source-to-drain charge injection
to as low as 0.31 pC at V_S = 0 V, and ±0.9 pC in the full signal range, as shown in Figure 39.
2
V_DD = 5 V, V_SS = -5 V V_DD = 12 V, V_SS = 0 V
1
0
V_DD = 10 V, V_SS = -10 V
-1
-2
-15
V_DD = 15 V, V_SS = -15 V
-10
-5
0
5
Source Voltage (V)
10
15
D011
Figure 39. Source-to-Drain Charge Injection
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
V_DD = 10 V, V_SS = -10 V
6
V_DD = 15 V, V_SS = -15 V
3
0
-3
-6
-9
-15
-10
V_DD = 12 V, V_SS = 0 V
-5
0
5
Drain voltage (V)
10
15
D008
Figure 40. Drain-to-Source Charge Injection
26
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