Hi,
The Reference Driver Design section of this document ( TIPD115 ) gives a comprehensive description of the key equations and parameters related to the design of the amplifier to buffer the external reference.
I hope this helps.
Regards,
Sandeep
Hi Carlos,
To use this amplifier as a buffer, the input and feedback resistors must be the same. Figure 73 in the ADS8861 datasheet shows an example input driver.
We also have a reference design for a similar device, which can be found here (or search…
Konstantin,
Check out TI Precision Design TIPD115 ( http://www.ti.com/tool/tipd115 ). This document details the design and construction of an 18 -bit, 1 MSPS, data acquisition system which sounds like it would meet your needs. If the shunt is on the low…
Hi Damien,
The reference inputs on the ADS1256 are switched-capacitor circuits that sample the applied differential reference voltage. Providing a low impedance reference source is important to ensure the reference capacitors get fully charged. The bandwidth…
Hello Filip,
The ADS7851 is a SAR ADC, therefore the inputs of the device have to be driven with a low impedance source. In order to obtain the expected performance, the external driving circuit must be able to completely charge the ADC's internal sampling…
