TC500_06 Datasheet, PDF (18/34 Pages) Microchip Technology – Precision Analog Front Ends

TC500/A/510/514
+5V
+
Input 1
–
+
Input 2
–
+
Input 3
–
+
Input 4
–
Analog
Mux Control Logic
IBM^®
Printer Port
2
Port
0378
3
Hex
10
25 1
18 _{CH1+ VDD VOUT}
CAP–
28
13
CH1–
17 _CH2+
26
CAP+
12 _CH2–
C_REF+ ⁷
16 _CH3+
11 _CH3–
C_REF- ⁶
15 _CH4+
V_REF+ ⁹
10 _{CH4– TC514}
20 _A0
V_REF- ⁸
1 μF
1 μF
10 kΩ
0.22 μF
MCP1525
10 kΩ
0.01 μF
10 kΩ
19 _A1
22
A
21
B
23 _CMPTR
BUF ^{4 100 kΩ}
C_AZ ³
C_INT ^{2 0.22 μF}
0.33 μF
ACOM ⁵
DGND
27
FIGURE 9-4:
TC514 To IBM^® Compatible Printer Port.
DS21428D-page 18
© 2006 Microchip Technology Inc.