MAT03 Analog Devices, Inc., MAT03 Datasheet - Page 6

• Manufacturer Part Number: MAT03
• Description: Low Noise, Matched Dual Pnp Transistor
• Manufacturer: Analog Devices, Inc.

MAT03
APPLICATIONS INFORMATION
MAT03 MODELS
The MAT03 model (Figure 1) includes parasitic diodes D
through D
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.
6
. D
1
and D
2
are internal protection diodes that prevent
3
MAT03 NOISE MEASUREMENT
All resistive components (Johnson noise, e
e
junctions (shot noise, caused by current flowing through a
junction, produces voltage noise in series impedances such as
transistor-collector load resistors, I
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
n
= 0.13√R nV/√Hz, where R is in kΩ) and semiconductor
n
= 0.566 √I pA/√Hz where
n
2
= 4kTBR, or