responded here: ez.analog.com/.../adn8834
I Have a question about enable ADN8834.
I put a TEC of 2,5Ohm resistor between TEC_P & TEC_N.
I control the ADN8834 with a DAC by default 1,25 V so output it's 0V.
But when I enable the ADN8834 by EN/SY ( all V power, V ref are good) I have…
I have a question on the Vout2. What is the voltage on Vout2 when the object temperature equals to the target temperature? It is described on Page 19 on the Datasheet.
Vout2 = Vtempset - (Z2/Z1)(Vout1 - Vtempset)
When the object temperature equals to…
I have a question about ADN8834, in the Datasheet there is a typical application circuit on Page 14, as shown below
I want to know what the function of the two resistors. What is the meaning that get the Vref/2? If I would like to contol the temprature…
I tested ADN8834.
I set IN2P 0 to 3.3V and out2 changed 0 to 2.5V (out1 only 3.3V)
but LDR and SFB is strange
this is my result.
(TEC+ = LDR, TEC- = SFB)
why SFB is not bigger then LDR?
This is my schematic.
Thank you for reading. and…
I am using AND8834 for a TEC module, and I have two questions ( forgive my English, I am Chinese) :
1) Based on formulas given in DS, I have following conclusions:
Vout2 = Vtempset - Z2 / Z1 ( Vout1 - Vtempset )
Vtec = VLDR - VSFB = - 5 ( Vout2…
My custmer try to use ADN8834.
The TEC voltage and the upper limit of the electric current are being designed by 1.0V/1.5A respectively.
In DS, Recommended Inductors
My custmer try to use ,
Value:2.2uH ±30% 2.62A（Typ）
are the two chopper stabilized amplifers inside the ADN8834 on while the chip is in standby. I plan implementing a digital control loop arournd the AD8834. It want to use one of the amplifiers for buffering the voltage across the thermistor. But…