Hi, I'm using the LT1461 4.096V version as an ADC reference for the AD7989-5. I have the output decoupled with a 10uF X5R 50V ceramic capacitor. Input power is +5V.

For my noise test my DC input voltages are

   VIN- = 3.96V

   VIN+ = 0.13V

I perform…

In my circuit, shutdown pin is left open and the output voltage has changed from 2.990V to 3.000V in a hour

When I shutdown pin leave open, is output voltage affected?

Or do I have any other potential problem in my circuit when the output voltage change…

Hi ADI team,

There are four DNC pin for LT1461, and I found that the DC impedance is only 5ohm between pin7 and pin8. Another samples show around 0.83Kohm between pin7 and pin8, and the voltage works well for 3V output.

I put my all measurement below…

What is the output impedance of LT1461?

Hello,

I am using the chip of LT1461 to make a 5V reference voltage, and behind the LT1461 is a amp circuit.

Now, I want to know the output impedance of LT1461 to fiure out if the behind circuit will affect the…

Hello,

I am using the chip of LT1461 to make a 5V reference voltage, and behind the LT1461 is a amp circuit.

Now, I want to know the output impedance of LT1461 to fiure out if the behind circuit will affect the 5V output of LT1461.

But the datasheet doesn…

I'd like to place a 5v and a 4.096v LT1461 in series driven from the same 12v rail to get a 9.096v output at 50mA. Is this possible or will I have issues floating one above ground in this fashion?

Hello ADI Team,

We are using LT1461 - 4.096V part and seeing more in Load regulation @ 1mA current. We played with so many input & output Capacitors still seeing issue with Load Reg. @ 1mA

Currently using caps are VIN = 2.2uF tantalum and VOUT = 2…