Datasheet

Industrial Converter and Protector IC AM460
analog microelectronics
April 2003
2/18
TABLE OF CONTENTS
Features 3
General Description 3
Block Diagram 3
Electrical Specifications 4
Boundary Conditions 6
Detailed Description of Functions 6
Operating AM460 8
General information on 2- and 3-wire applications and the use of the current output 8
Setting the voltage gain using the voltage output 9
Setting the output current range using the current output 9
Selecting the supply voltage 9
Connecting OP2 as a current source 10
Connecting OP2 as a voltage reference 11
Operating AM460: Important Points to Note 12
Applications 12
Typical 3-wire application with an input signal referenced to ground 12
Typical 2-wire application with an input signal referenced to ground 14
Block Diagram and Pinout 16
Examples of Possible Applications 17
Delivery 18
Further Reading 18
TABLE OF FIGURES
Table 1: AM460 pinout 16
Figure 1: Block diagram of AM460 3
Figure 2: Block diagram of AM460 with external components (3-wire circuit for current output) 7
Figure 3: Difference between 2- and 3-wire operation 8
Figure 4: Working range in conjunction with the load resistor 10
Figure 5: Connecting up a constant current source 10
Figure 6: Connecting up a voltage reference 11
Figure 7: Typical application for input signals referenced to ground 13
Figure 8: Typical 2-wire application for input signals referenced to ground 14
Figure 9: Block diagram of AM460 16
Figure 10: Pinout 16
Figure 11: Application for input signals referenced to ground (protected output stage, impedance converter etc.) 17
Figure 12: Complex configuration as a peripheral processor IC 17
Figure 13: Conversion of a 0.5...4.5V sensor signal 17