7-
11
7-2. Analog Circuits
Analog components and circuits represent another family of integrated circuit components and
include operational amplifiers (op amps), comparators, references, regulators, timers and many
other specialized functions. These components and circuits present more troubleshooting
challenges that are unique to this particular family of ICs.
Op Amps
Frequently, each pin of an op amp creates a different signature on the Tracker 2700. This
signature is the result of the internal design of the chip and both the internal and external circuit
elements connected to it. This type of analog component typically has many internal junctions
connected to each pin and each pin may also be connected to numerous external components.
The following example will demonstrate TSA with a commonly used 741 type op amp. In this
case it is configured as an inverting amplifier circuit as in the schematic below.
Figure 7-10. Op Amp Symbol And Schematic Diagram Of An Inverter Circuit
We will examine the signatures of this analog IC and present some troubleshooting concepts for
this type of component.
To Next Page
Loading...
