What is the difference between the -102 and -103 configurations indicated on the QRS14 data sheet?
The -102 version operates from a signle-sided power supply of +9 Vdc to +18 Vdc. This configuration is most useful for applications which use battery power as the supply voltage. In the -102 configuration, the Input current is less than 20 mA. The -103 version operates from a two-sided power supply of + and – 9 Vdc to + and – 9 Vdc to + and -18 Vdc and offers a higher signal resolution than the -102. In the -103 configuration, the Input Current is less than 20 mA each supply. Both versions feature internal power regulation.
