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Delta 45 Specifications Page 19

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Recommended transformer:
Mini-circuits T1-6T
ADC12EU050
www.ti.com
SNAS444I –JANUARY 2008–REVISED APRIL 2013
ADC INPUT CONSIDERATIONS
The ADC12EU050’s sigma delta architecture offers many flexible options for connecting input signals.
In order to obtain maximum performance from the device, it is recommended to use a differential input
connection. The device, however, also supports single ended analog input.
Differential Input Configurations
The ADC12EU050 can be driven either actively or passively.
Transformer coupling provides another possibility for converting a single ended signal into a differential signal.
The diagram below shows a transformer coupled input configuration.
Figure 14. Transformer Coupled Input
Single Ended Input Configurations
In cost sensitive applications, a single ended input may provide adequate performance, however ADC
performance will degrade slightly. When using single ended inputs, the maximum input voltage allowed is 3dB
less than the 2.10V full scale input. The diagram below shows a single ended input configuration.
Figure 15. Single Ended Input
Input Coupling and Common Mode
Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 19
Product Folder Links: ADC12EU050
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