ad7868bq Analog Devices, Inc., ad7868bq Datasheet - Page 13

• Manufacturer Part Number: ad7868bq
• Description: Lc2mos Complete, 12-bit Analog I/o System
• Manufacturer: Analog Devices, Inc.

REV. B
Figure 20. SKT6, D-Type Connector Pinout
ANALOG OUTPUT
ANALOG INPUT
68pF
C22
3V RANGE
3V RANGE
15k
R6
AD711
SKT1
SKT2
R
C
IC8 1/2
74HC221
EXT
EXT
330pF
C21
V–
1
C12
0.1 F
/C
V
5V
IC3
GND
A
CC
EXT
COMPONENT
GRID
6
NC = NO CONNECT
LK2
LK1
+
2
C
2k
R2
CLR
A
B
7
C10
0.1 F
COMPONENT
GRID
Q
A
B
C11
10 F
10 F
V +
C
3
C5
SKT3
LDAC
B
8
4
C9
10 F
5V
Figure 19. Input/Output Circuit Based on the AD7868
ADG201HS
9
0.1 F
10 F
V+
C7
C6
5
LK3
IC4
C
B
C
+
A
CONVST
IC2
LK6
A
0.1 F
SKT4
V+
C8
V–
AD711
B
2k
R1
IN
78L05
GND
IC5
OUT
V
AGND
AGND
DGND
DGND
LDAC
CONVST
V
C4
0.1 F
IN
OUT
V
AD7868
V
SS
DD
IC1
CONTROL
–13–
5V
V
RO DAC
RO ADC
C3
10 F
V
RI DAC
SS
DD
RCLK
TCLK
RFS
TFS
WIRE LINK OPTIONS
LK1, Analog Input Link
LK1 connects the analog input to a component grid or to a
buffer amplifier which drives the ADC input.
LK2, Analog Output Link
LK2 connects the analog output to the component grid or to
either the SHA or DAC output (see LK3).
LK3, SHA or DAC Select
The analog output may be taken directly from the DAC or from
a SHA at the output of the DAC.
CLK
DR
DT
–5V
C2
0.1 F
4.7k
OUT
5V
200
R7
79L05
R3
GND
IC6
C
A
B
A
B
C
C1
10 F
–5V
IN
2k
LK5
R4
LK4
0.1 F
C24
V–
4.7k
R5
–5V
74HC4050
A
IC7 1/2
C23
10 F
LK7
B
C
LK8
SKT5
EXT CLK
LK9
DGND
RCLK
TCLK
DR
RFS
TFS
5V
DT
9-WAY D-TYPE
CONNECTOR
AD7868
SKT6