zr431 Zetex Semiconductors plc., zr431 Datasheet - Page 6

• Manufacturer Part Number: zr431
• Description: Zr431 - Adjustable Precision Zener Shunt Regulator
• Manufacturer: Zetex Semiconductors plc.

DC TEST CIRCUITS
Input
NOTES
Deviation of reference input voltage, V
input voltage over the full temperature range.
The average temperature coefficient of the reference input voltage, V
Vmin
Vmax
Fig 1 – Test Circuit for V
ZR431
Vdev = Vmax - Vmin
I
L
z
=V
ref
Fig 2 – Test Circuit for V
V
The dynamic output impedance, Rz, is defined as:
When the device is programmed with two external
resistors, R1
impedance of the overall circuit, R’, is defined as:
dev,
ref
ppm °C
is defined as the maximum variation of the reference
4-194
78
V
R
R’ R
and R2, (fig 2) , the dynamic
dev
V
Z
ref
z
>V
x 1000000
z
T1 T2
V
I
1
ref
Z
Z
R1
R2
Input
Fig 3 – Test Circuit for Off
ref
is defined as:
State current
output
I
zoff
V
Z