adc128d818cimtx National Semiconductor Corporation, adc128d818cimtx Datasheet - Page 24

• Manufacturer Part Number: adc128d818cimtx
• Description: 12-bit, 8-channel, Adc System Monitor With Temperature Sensor, Internal/external Reference, And I2c Interface
• Manufacturer: National Semiconductor Corporation

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Z = high impedance
15.11.2 Voltage Monitoring for Power Supplies
Figure 16
a DC/DC converter. Such configuration can be used in a pow-
er supply application. The point to make with this example
diagram is the Serial Bus Address connections. The previous
example shows A0 and A1 connected to four GPOs, but this
example shows a simpler A0 and A1 connection using two
resistor dividers. This connection accomplishes the same
shows a more complete systems application using
TABLE 7. Setting Serial Bus Address using GPO
HIGH
HIGH
HIGH
LOW
LOW
LOW
MID
MID
MID
A1
FIGURE 16. Power Supply Application
HIGH
HIGH
HIGH
LOW
LOW
LOW
MID
MID
MID
A0
GPO1 GPO2 GPO3 GPO4
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
Z
Z
Z
24
LOW
LOW
LOW
LOW
LOW
LOW
Z
Z
Z
goal as the GPO connection, that is, it can set A0 and A1 high,
low, or to midscale.
For example, to set A0 high, don't populate RB_bottom; to set
A0 low, don't populate RB_top; and to set A0 to midscale,
leave RB_top and RB_bottom as is and set them equal to
each other. A typical RB value ranges from 1 kOhm to 10
kOhm.
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
Z
Z
Z
LOW
LOW
LOW
LOW
LOW
LOW
Z
Z
Z
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