Dose LTM2893 suit AD7983?

Question

Hello everyone 
 I want to use LTM2893 to isolate SPI I/F for AD7983, is AD7983 compatible with the LTM2893? 
 On the datasheet of LTM2893, It is mentioned LTM2893 is optimized for isolating 1Msps high resolution 18-bit SAR ADCs, but these are only some suited legacy LTC ADCs on datasheet. 
 Do you have any recommended legacy ADI ADCs which can work well with LTM2893? 
 Best ragards 
 QI

EZAdministrator · Accepted Answer

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

ericb · Answer

Hello QI, 
 The AD4000 family should work with the LTM2893. I've successfully operated the AD4003 with the LTM2893. The AD4003 is an 18-bit 2Msps SAR. 
 You'll need to operate the AD4003 in the chip-select 3-wire with busy indicator mode and configure the LTM2893 to use a 100MHz SCK2 frequency, 1 word count and a 20-bit word size. Note that the valid data is in the lower 18-bits. Here's an example circuit to illustrate the connections between the AD4003 and LTM2893.

Eric

Electronic Design Services - PartnerZone

Products In This Thread

Dose LTM2893 suit AD7983?

Top Replies