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
Duplicate question https://ez.analog.com/voltage-references/f/q-a/141293/lt1461-shutdown-pin-max-voltage for reference
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?
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…
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…
ADR425 data-sheet page 13 figure 22 shows Load Current Vs Differential Voltage (Vin- Vout) plot. Please note based on ADR425 load regulation specification, ADR425 can only source up to 10mA.
If requirement for VREF is to source 20mA and support…