Evaluation Board for the AD590 2-Terminal IC Temperature Transducer

Description

This user guide describes the EVAL-AD590-ARDZ evaluation board hardware and software and includes detailed schematics and PCB layout artwork. This evaluation board is simple, easy-to-use platform which allows direct evaluation of the AD590 analog temperature sensor.

The AD590 is a 2-terminal integrated circuit temperature transducer that produces an output current proportional to absolute temperature. Requiring supply voltages between 4V and 30V, the device acts as a high impedance, constant current regulator passing 1μA/K. Laser trimming of the chip’s thin-film resistors is used to calibrate the device to 298.2μA output at 298.2K (25°C).

When using the AD590 evaluation board, in addition to this user guide, the user should also consult the AD590 datasheet (available at the Analog Devices, Inc., website, www.analog.com).

Figure 1. EVAL-AD590-ARDZ FUNCTIONAL BLOCK DIAGRAM

Hardware Setup

Evaluation Requirement

EVAL-AD590-ARDZ Evaluation Board
SDP/Linduino Controller Board and User Guide
PC with a USB port and Windows 7 (32-bit) or higher
Serial Terminal Software (Putty/TeraTerm or similar)
USB Standard-A to Mini-B cable

Quick Start Procedure

Connect the SDP board ( SDP-S , SDP-B , or SDP-K1 ) to the EVAL-AD590-ARDZ (see Figure 2) development board via Connector P10. See Figure 3 for a diagram showing the connected EVAL-AD590-ARDZ board and SDP board.

Location of Evaluation Board Schematics

The evaluation board schematic diagrams and bill of materials are included with all the supporting documentation on the EVAL-AD590-ARDZ product page.

Power Supplies

The EVAL-AD590-ARDZ evaluation board is powered by 5V from either an SDP board or Linduino board via JP1. Alternatively, the EVAL-AD590-ARDZ board can be powered externally via P9, which is selected by changing the JP1 jumper to position B.

Figure 2. EVAL-AD590-ARDZ EVALUATION BOARD

Figure 3. EVAL-AD590-ARDZ BOARD AND SDP BOARD CONNECTED DIAGRAM

Software Setup

The software is designed to be simple and straight forward to use. Select which sensor you would like to use, whether you want to use the internal sensor or a remote one and then simply enter a number corresponding to the required command and follow the on-screen prompts. Refer to software manual EVAL-AD590-ARDZ Mbed Example [Analog Devices Wiki] for more detailed information.

FIGURE 4. EVAL-AD590-ARDZ DEMONSTRATION PROGRAM

Figure 4. EVAL-AD590-ARDZ DEMONSTRATION PROGRAM

Analog Devices Wiki

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