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Original question:

ADS131E08S or ADS131E08

ADS131E08: ADS131E08S or ADS131E08

Aitor San Epifanio
Prodigy 100 points
Part Number: ADS131E08

Hi,

We are designing a prototype with the "ADS131E08IPAGR". It has 5 units. 2 are connected in daisy chain mode to a micro by SPI, another 2 in daisy chain to another micro by SPI, and the last one to another micro by SPI. All ot them are managed by the same clock and Start signal.

Our purchasing department has received the following information from our distributor:

Ref.  ADS131E08IPAG  28-30 w   (Octal Channel Octal ADC Delta-Sigma 64ksps 24-bit Serial 64-Pin TQFP Tube) tube 160 pcs.

Ref. ADS131E08IPAGR  28-30 w   (Octal Channel Octal ADC Delta-Sigma 64ksps 24-bit Serial 64-Pin TQFP T/R) 1500 pcs. reel

Ref.  ADS131E08SPAG  20-22 w   (AFE General Purpose 8ADC 24bit 1.8V/5V 64-Pin TQFP Tube) tube 160 pcs.

Ref. ADS131E08SPAGR  20-22 w   (AFE General Purpose 8ADC 24bit 1.8V/5V 64-Pin TQFP T/R) 1500 pcs. reel

For the prototypes, we can get some "ADS131E08SPAG".

According to the datasheet, we have checked that the main differences are startup time, the internal Voltage reference and slight differences in the DC and AC performance data.

We are using internal Voltage reference of the devices, so we think that we are not going to have problems.

Could you confirm please if there is any other difference that could generate problems?

Taking into account the devices time life, delivery times, ... What device would you recommend to use?

Thanks,

Best regards.

Aitor.

  • 0
    TI__Guru 55042 points
    Hello Aitor,

    Thanks for your post and welcome to the forum!

    The start up time improvement, lack of external reference option, and increased THD are the only notable differences between the E08S and E08. There should not be any problems using one or the other.

    This post addresses product lifetime: e2e.ti.com/.../2683807

    I do not foresee a difference in lifetime between the two devices.

    Unfortunately I do not have much visibility into delivery times, however you could check with our other authorized distributors using this link: www.ti.com/.../distributors.html

    I recommend checking with a few more distributors to find the best price/volume & delivery time that meshes with your project timeline.