2025-10-26


Horseshit


Religion / Tribal / Culture War and Re-Segregation

TechSuck / Geek Bait

  • The great ADS1115 pricing mystery, part two

    Last week I talked about the peculiar pricing of the very popular TI ADC, the ADS1115. In a nutshell, you can buy it for either about $4 or for $0.50, depending on the supplier. US suppliers like Mouser and Digikey sell at the high price, Chinese LCSC sells at the lower. This definitely prompted a lot of discussion. This week the authentic ADS1115 arrived, and I have some new findings to report. This situation looks like price discrimination. TI is the monopoly supplier of ADS1115 chips — nobody else can make and sell an ADS1115. TI knows that US customers are much less price-sensitive than Chinese customers, so sets a higher price in the US.

    There’s a clear difference in the performance of these parts. The Adafruit board was a lot better than claimed in the TI datasheet. The cheap boards were much worse. So that rules out price discrimination by TI. Looking at the pricing and gain accuracy, I’d say that the cheap ADS1115 parts in the breakouts are fails, either from TI (unlikely), from Analogy, or from some other nameless vendor selling fakes.

    At the end of the day, if the imitation is so like the real thing you can’t tell the difference, then how much it does it matter if it’s real or not?

Space / Boomy Zoomers / UFO

Gubmint / Poilitcks / Law Making

Left Angst

Law Breaking / Police / Internal Security