MP7543
APPLICATION NOTES
Refer to Section 8 for Applications Information
(8)
8085
ALE
ADDRESS BUS (16)
A0-15
ADDRESS (16)
6800
R/W
ADDRESS BUS (16)
A0-15
ADDRESS (16)
8212
+5 V
E1
E3
8205
DECODER
φ
2
E1
E3
E2
8205
DECODER
WR
E2
D0
D7
(8) AD0-7
DATA
DATA (8)
DATA BUS (8)
DATA (8)
SOD
+5 V
SR1 LD2 STB2
STB3
MP7543
STB1
STB4
CLR
LD1
+5 V
SR1 LD2 STB1
STB3
MP7543
STB2
STB4
LD1
CLR
FROM SYSTEM RESET
FROM SYSTEM RESET
Figure 1. MP7543 8085 Interface
Figure 2. MP7543 MC6800 Interface
Digital Input
V
IN
R
FB
I
OUT1
V
REF
MP7543
I
OUT2
–
+
V
OUT
Figure 3. Digitally Programmable
Gain Amplifier
Graph 1. Relative Accuracy vs. Digital Code
Rev. 2.00
7