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| DDC112 Datasheet, PDF (8/24 Pages) Burr-Brown (TI) – 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
Convert
Wait
FIGURE 4. Basic Integrator Timing Diagram as Illustrated in Figure 3.
CF
SREF1
VREF
SINT
IN
SREF2
CF
SRESET
SA/D
To Converter
IN
SINT
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.
®
DDC112
8
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