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| DDC118_16 Datasheet, PDF (10/36 Pages) Texas Instruments – Octal Current Input, 20-Bit Analog-To-Digital Converter | |||
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DDC118
SBAS325B â JUNE 2004 â REVISED APRIL 2009
www.ti.com
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 Integration Timing Diagram (as shown in Figure 3)
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 DDC118
10
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