Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Need a K thermocouple amplifier

Status
Not open for further replies.

tdk

Member level 2
Joined
Sep 2, 2003
Messages
52
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
291
There is Max6675 that does the job but it is expensive.
Is there any solution with op-amps that they need no adjustment?

My regards
 

What is the required O/P of ur circuit? is this a stand alone temperature sensor or this amplifier is to be interfaced to a uC chip? Some uC families (like PSoC from Cypressmicro.com) implements a really reliable building blocks suitable for this type of interfacing.
 

Thanks BUS MASTER but there is a special need for Op-Amp since PSOC and
other mixed mode MCUs are fare away from implementing accurate projects.
I am aware of PSOC since I have done a couple of projects.

My best regards
 

What do u mean by accurate projects?

u can acheive up to +/- 0.2 degree C using PSoC internal analog blocks.

if this is beyond the accuracy range u need, have a look at AD595 chip from Analog Devices.
 

PSoC at first looks nice, but analog part is simply not for complicated applications. Maybe ADI's microconverter could help you. It has high resolution (12 -24 bit)ADC and large built in memory that could be used to store look up table in 16 bit precision... But price is also higher. Without microcontroller, in the case of pure discreete realisation, I wish yo a luck with temperature stability, offset, etc...
Maybe you could find some information in chapter 7 of the book:
PRACTICAL DESIGN TECHNIQUES FOR SENSOR SIGNAL CONDITIONING by WALT KESTER
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top