AHK432
Adjustable Low Voltage Shunt Regulator
Typical Characteristics
Unless otherwise noted, T
A
= 25°C, I
Z
= 10mA.
Cathode Impedance vs. Temperature
Normalized Impedance (%)
16
12
8
4
0
-4
-50
-25
0
25
50
75
100
125
0.01
1.E+01
10
Impedance vs. Frequency
Impedance (Ω)
1
0.1
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
Junction Temperature (°C)
Frequency ( Hz )
Gain and Phase vs. Frequency
120
100
180
150
120
90
60
30
0
-30
1.E+06
V
OUT
V
IN
13.7k
AHK432
8.25k
5V
169
Ω
Gain (dB)
80
60
40
20
0
-20
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
Frequency (Hz)
Test Circuit for Voltage
Gain and Phase
Stability Boundary
1k
100
80
I
Z
Stable
Stable
Current (mA)
R1=10k
C
L
60
40
Unstable
20
AHK432
R2
V
REF
=V
Z
0
10.E+0
100.E+0
1.E+3
10.E+3
100.E+3
1.E+6
10.E+6
Load Capacitance (pF)
Test Circuit for Stability
6
432.2005.11.1.3
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
