Datasheet

–6–
REV. C
MAT03
Figure 1. SPICE or SABER Model
APPLICATIONS INFORMATION
MAT03 MODELS
The MAT03 model (Figure 1) includes parasitic diodes D
3
through D
6
. D
1
and D
2
are internal protection diodes that prevent
zenering of the base-emitter junctions.
The analysis programs, SPICE and SABER, are primarily used
in evaluating the functional performance of systems. The models
are provided only as an aid in using these simulation programs.
MAT03 NOISE MEASUREMENT
All resistive components (Johnson noise, e
n
2
= 4kTBR, or
e
n
= 0.13√R nV/√Hz, where R is in kΩ) and semiconductor
junctions (shot noise, caused by current flowing through a
junction, produces voltage noise in series impedances such as
transistor-collector load resistors, I
n
= 0.566 √I pA/√Hz where
I is in µA) contribute to the system input noise.
Figure 2 illustrates a technique for measuring the equivalent in-
put noise voltage of the MAT03. 1 mA of stage current is used
Figure 2. MAT03 Voltage Noise Measurement Circuit