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Installation and Operation
2.3.1
2.3.1.1
Top Level Amplifier Circuit Diagrams
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 P1 = 1.0 μF.
D P1
V S
Power Supply
V DD
C P1
Note:
D P1 is a zener diode with nominal voltage of 6.2V
FIGURE 2-3:
Power Supply Block.
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.
C R1 = C R2 = 0.1 μF, R R1 = R R2 = 20.0 k Ω.
Mid-supply Reference
V DD
R R1
C R1
C R2
R R2
U R1
V R
FIGURE 2-4:
? 2007 Microchip Technology Inc.
Mid-Supply Reference Block.
DS51673A-page 9
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