Part Number: ADS7805 Hi team,
My customer asked about the power up/down sequence for VDIG and VANA.
Based on the datasheet, it seems that customer need to keep the voltage difference VANA and VDIG within 0.3V and keep VANA > VDIG even when powering up…
Part Number: ADS7805 A customer of mine is using the ADS7805.
The TI datasheet advices to use a 2.2uF Tantalum capacitor at pin 3 and 4 (REF and CAP).
The customer wants to use a different capacitor (have been using ALcaps, that become obsolete now.) …
Other Parts Discussed in Thread: ADS7805 Hi,
I hereby ask for ADS7805UB analogue-digital converter's Coc.
Please send it to this email: commerciale@radiocomct.it
Cordially
Engineer Dino Bartolone
Hi ttd,
Figure 25 in the ADS8515 datasheet performs the same gain adjust function as figure 6 in the ADS7805 datasheet. The main difference is that the external resistors (200 ohm and 33.2k ohm) are no longer needed with the ADS8515, which is where the…
Hello,
The ADS8509 will work fine with ceramic capacitors; you may replace the 2.2uF tantalum capacitors in the CAP pin with a ceramic capacitor. The device family was developed to be an exact drop-in replacement of the former ADS7805 family. The ADS7805…
Hi Wu,
In the case of the ADS8505, the device will work fine with ceramic capacitors; you may replace the 2.2uF tantalum capacitors in the CAP pin with a ceramic capacitor. The ADS8505 device was developed to be an exact drop-in replacement of the former…
Other Parts Discussed in Thread: ADS7805 , ADS1174 I'm working with a C6414 evaluation board and need to add an ADC to it. Searching online I found the document SLAA229 for CONTROLLING THE ADS7805 WITH TMS320 that seemed an efficient way to start since…
Hi Ushikubo-san,
The ADS8505 will work fine with ceramic capacitors; you may replace the 2.2uF tantalum capacitors with ceramic capacitors for the ADS8505.
The ADS8505 device was developed to be an exact drop-in replacement of the former ADS7805. The ADS7805…
Hello Marsha-san,
Thank you for your answer.
Please kindly answer additional question for Q1.
I asked which is correct (a: or b:) to calculate influence of temperature drift of ADS7805 and ADS8505 for customer’s use case “between -20 degrees centigrade…
Hi Somnath,
Welcome to the data converts forum!
About the REF3125, 2.503V is within specs. The REF3125 has a +/-0.2% accuracy, so its expected output is a value between 2.495V to 2.505V.
A common issue when using the ADS8505 is that a non-200ohm resistor…
