u-blox Malmo AB 090202L User Manual
Version 1.4.1 - 2006-04
57
A.2.5 A Complete 5V Host System Interface
This is a complete 5V host system interface example with an RGB LED and two switches
(except the serial interface, see section A.2.2 for information). The design is based on the
LM339 Quad OP-amp instead of logic gates.
(except the serial interface, see section A.2.2 for information). The design is based on the
LM339 Quad OP-amp instead of logic gates.
Figure 35: A complete 5V host interface with operational amplifier