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| DDC112Y Datasheet, PDF (10/34 Pages) Texas Instruments – Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER | |||
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CONV
CLK
SINTA
SINTB
SREF1
SREF2
SRESET
SA/D1A
Configuration of
Integrator A
VREF
Integrator A
Voltage Output
Convert
Wait
Integrate
FIGURE 4. Basic Integrator Timing Diagram as Illustrated in Figure 3.
Convert
Wait
CF
SREF1
VREF
SINT
IN
SREF2
CF
SRESET
To Converter
SA/D
SINT
IN
a) Reset Configuration
SRESET
SINT
IN
SRESET
CF
SREF1
SREF2
SA/D
c) Integrate Configuration
VREF
b) Wait Configuration
CF
To Converter
SINT
IN
SRESET
SREF1
SREF2
SA/D
VREF
To Converter
SREF1
SREF2
SA/D
VREF
To Converter
d) Convert Configuration
FIGURE 5. Diagrams for the Four Configurations of the Front End Integrators of the DDC112.
10
www.ti.com
DDC112
SBAS085B
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