Other Parts Discussed in Thread: REF5040, REF3125, , OPA350
Hi:
We are using the ADS1158IRTC with REF5040IDGK as 4.096V reference.
I have attached schematics.
Looking at the data sheet (https://www.ti.com/lit/ds/symlink/ads1158.pdf)
FIG-54 Page 42 in datasheet:
The reference pn: ref5040 ( 4.096V)
however in the text above it mentioned REF3125 ( 2.5V). ""The 2.5V reference, REF3125, is filtered and buffered to provide a low-noisereference input to the ADC. The chop feature of the ADC can be used to reduce offset and drift of the amplifiers."
I think you have an error in the datasheet the reference shoud be REF3125 not REF 5040 ???
Is it legal to use the 4.096 Vref as shown in our schematics ?
per datasheet MAX value for VrefP= AVDD +0.1V
MIN value for VrefN=AVSS-0.1V.
We are getting serious errors when reading the ADC values.
please advise urgently.
sincerel
zvi peshkess
zvip@marvintest.com
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