AP431/AP431A
Adjustable Precision Shunt Regulator
Typical Performance Characteristics(Continued)
SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY
60
A
V
-Small Signal Voltage Amplification (dB)
50
40
30
20
10
0
1K
10K
I
KA
=10mA
T
A
=25
o
C
15KΩ
9µF
Output
I
KA
232Ω
+
8.25KΩ
-
TEST CIRCUIT FOR VOLTAGE AMPLIFICATION
f-Frequency-Hz
100K
1M
10M
REFERENCE IMPEDANCE vs. FREQUENCY
100
∣ZKA∣—Reference
Impedance
—Ω
I
KA
=10mA
T
A
=25
o
C
10
50Ω
-
+
1
TEST CIRCUIT FOR REFERENCE IMPEDANCE
0.1
1K
10K
100K
1M
10M
f-Frequency-Hz
Anachip Corp.
www.anachip.com.tw
7/17
-
1KΩ
+
GND
Output
I KA
GND
Rev.1.0 May.7, 2004