Other Parts Discussed in Thread: ADS7042, , LM4040
Hi team,
My customer is using AD7091R which is a ADC with internal 2.5Vref. The Vref spec. is as below picture.
However, TI doesn't have a proper ADC that has the same internal Vref. So we have to use ADS7042 which doesn't have internal Vref to compete with AD7091R and we need to use a external LDO at the ADS7042 AVDD to work as the Vref. And the cost of the external LDO needs to be less than $0.2.
In ADS7042 datasheet, it recommends TPS791 as the external LDO. But I just want to check with you if TPS791 performance is enough as the AD7091R internal Vref and if TPS791 cost can meet $0.2? Thanks.
Best regards,
Wayne