LM YNAD584 Voltage Reference 4-Channel 2.5V 5V 7.5V 10V High Precision Voltage Reference Module

Received as advertised. The silk-screened pins at the bottom are user-selected output voltage. The J1-J4 pin sets are as marked. The gap between the triple-pin ports is exactly one pin so that a 7-pin socket will engage the input set or output set. The AD584 IC can source three bridge sensors of 5k Ohms each and this port scheme permits all three to be connected with one socket. Simply using my Fluke 8090 calibrated DVM reveals a match to the provided voltage test data. Note that the AD584 "strobe" pin is not connected, but there is a small pad which may allow connection. The power-on LED is red color and dim but observable. I will procure more for my lab.

Attempted to run it at 3.3V, it only outputted 2.18V when set to 2.5V. Turns out the AD584 has a minimum supply voltage of 4.5V. Switching to a 5V power source, it outputted 2.48V, which still isn't what I would consider "high precision." On top of that, the activity LED barely glows even on a 5V supply, which makes me wonder if it was really necessary to include the LED and its current-limiting resistors for a board that should make its primary focus being a voltage reference for DACs and the like. Will be returning it.

It is very accurate and helpful to have this AD584 Voltage Reference in my home workshop to test meters. I use it much more than I thought because it gives an extra bit of confidence that everything it working correctly. It is one of those items that when you need it, you will need it. Buy One.

Work as expected but there no voltage measurement sheet.

I put 12v DC in from a switched power supply (+ to J1, - to J2); then I attached my ancient Fluke 45 multimeter to J3 and J4. The readings are apparently arbitrary at all four levels set by J5: when I specify 2.5V, I get 8.79v; at 5v, I read 9.85v; etc (see pix: the power supply is on the left, multimeter on the right, and if you look closely, the J5 setting on the breakout board is visible). I'd be happy to be told I'm doing something wrong, but at this point, it looks useless.

This AD584 Voltage Reference works as described, provides multiple voltage outputs with good accuracy. If you need to use the 5.0 or 2.5 volt outputs along with the 10.0 volt, you will have to buffer the 5.0/2.5 outputs with a unity gain buffer amp.

This little voltage reference module is dead on accurate. It does everything it says it will do and at a reasonable price. Good quality circuit board and nicely soldered components. No complaints at all.

My board was super accurate. It measured 2.4998 on my Fluke 45.