Dual Sample And Hold Circuitry In Adc12; Adc12 Dual Sample And Hold Configuration - Texas Instruments UCD3138 Technical Reference Manual

Usage of Sample and Hold Circuitry for High Impedance Measurement
Figure 8-16 shows the ADC12 dual sample and hold configuration table and operation principles.
Here is an application example:
To use AD01 on high impedance node:
BYPASS_EN = 5; // select AD01 as dual sample and hold channel. A buffer will be added to AD01
SEQ0 = 4; //put AD04 on sequence 0
SEQ0_SH = 1; //enable AD04 to do dual sample and hold with AD01
SEQ1 = 1; //put AD01 on sequence1
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ADC12 Overview
Figure 8-15. Dual Sample and Hold Circuitry in ADC12
Figure 8-16. ADC12 Dual Sample and Hold Configuration
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SNIU028A – February 2016 – Revised April 2016
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