Microchip Technology ADM00375 User Manual
Installation and Operation
© 2011 Microchip Technology Inc.
DS52005A-page 13
2.3.1
Top Level Amplifier Circuit Diagram
2.3.1.1
POWER SUPPLY BLOCK
The power supply is protected by a Zener diode and bypassed by a capacitor.
Figure 2-3 shows the circuit diagram for the power supply (C
Figure 2-3 shows the circuit diagram for the power supply (C
2
= 1 µF). D
P1
is a Zener
diode with a nominal voltage of 16V.
FIGURE 2-3:
Circuit Diagram for Power Supply.
2.3.1.2
MID-SUPPLY REFERENCE BLOCK
The mid-supply reference consists of a voltage divider and a buffer amplifier. Figure 2-4
shows the circuit diagram for the mid-supply reference (R
shows the circuit diagram for the mid-supply reference (R
3
= R
4
= 100K, C
3
=0.1 µF).
FIGURE 2-4:
Mid-Supply Reference Block.
2.3.1.3
OUTPUT LOAD BLOCK
The output load consists of a capacitor and a resistor. Figure 2-5 shows the circuit
diagram of the output load (R
diagram of the output load (R
L
= 10K, C
L
= 56 pF).
FIGURE 2-5:
Output Load Block.
V
DD
V
DD
C
2
D
P1
V
DD
C
2
R
4
R
3
+
-
V
DD
V
REF
U
1D
V
OUT
R
L
C
L
V
C