Data Translation DT9820 Series, User Manual

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Chapter 2
8
Figure 1 shows a block diagram of the DT9820 Series function
modules. Note that bold entries indicate signals you can access.
Figure 1: Block Diagram of the DT9820 Series Function Modules
500 V Isolation Barrier
Isolated Power
Power Control
DC to DC
Microcontroller
and FIFO
32K SRAM
USB Interface
+5 V D + D - GND
High-Speed
Isolated Data Path
CH 0
24-Bit
A/D
CH 1
24-Bit
A/D CH 2
24-Bit
A/D CH 3
24-Bit
A/D
1, 2, 4,
8, 16, 32,
64 Gain &
Selectable
100 Hz
Filter
1, 2, 4,
8, 16, 32,
64 Gain &
Selectable
100 Hz
Filter 1, 2, 4,
8, 16, 32,
64 Gain &
Selectable
100 Hz
Filter
1, 2, 4,
8, 16, 32,
64 Gain &
Selectable
100 Hz
Filter
16 Bit
DACs
8 Digital Inputs
with 22K
Pullups to +5K 8 Digital Outputs
with 22K Pullups
to +5K
Controller
and Clocks
A/D 0
Hi Low A/D1
Hi Low A/D 2
Hi Low A/D 3
Hi Low DAC0 &
DAC1
8 Digital Inputs
8 Digital Outputs
+5 V