Software Control
ADC34XX Tab
•
Disable Dither CHA – disables the dither circuit, if asserted, dither is on by default
•
Disable Dither CHB – disables the dither circuit, if asserted, dither is on by default
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Disable Dither CHC – disables the dither circuit, if asserted, dither is on by default
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Disable Dither CHD – disables the dither circuit, if asserted, dither is on by default
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CHA PwDn – power down CHA
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CHB PwDn – power down CHB
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CHC PwDn – power down CHC
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CHD PwDn – power down CHD
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CHA Gain Enable – enable the digital gain block for CHA
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CHB Gain Enable – enable the digital gain block for CHB
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CHC Gain Enable – enable the digital gain block for CHC
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CHD Gain Enable – enable the digital gain block for CHD
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Gain CHA – digital gain setting from 0 dB to 6 dB
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Gain CHB – digital gain setting from 0 dB to 6 dB
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Gain CHC – digital gain setting from 0 dB to 6 dB
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Gain CHD – digital gain setting from 0 dB to 6 dB
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Enable Test Pattern – enable the use of test patterns instead of sample data
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Align Test Data – align all test data on the outputs
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Test Pattern CHA – different available test patterns
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Test Pattern CHB – different available test patterns
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Test Pattern CHC – different available test patterns
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Test Pattern CHD – different available test patterns
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Custom Pattern – 14-bit custom bit pattern used when
Custom Pattern
is selected
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Disable Chopper CHA – disable the chopper function which shifts 1/f nose to Fs/2, default is on
•
Disable Chopper CHB – disable the chopper function which shifts 1/f nose to Fs/2, default is on
•
Disable Chopper CHC – disable the chopper function which shifts 1/f nose to Fs/2, default is on
•
Disable Chopper CHD – disable the chopper function which shifts 1/f nose to Fs/2, default is on
•
Low Freq Mode – enable for sampling frequencies lower than 35 MHz
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OVR on LSB – over range indication on LSB, by default it is normal LSB function
•
LVDS Swing – control the LVDS swing on the LVDS signals
15
SLAU579A – June 2014 – Revised September 2014
ADC3xxx, ADC3xJxx EVM User’s Guide
Copyright © 2014, Texas Instruments Incorporated
