MIC3003GFL Datasheet, PDF (18/74 Pages) Micrel Semiconductor – FOM Management IC with Internal Calibration

Micrel, Inc.
Block Diagram
MIC3003GFL
Figure 1. MIC3003 Block Diagram
Analog-to-Digital Converter/Signal
Monitoring
A block diagram of the monitoring circuit is shown below.
Each of the five analog parameters monitored by the
MIC3003 is sampled in sequence. All five parameters are
sampled and the results updated within the t_CONV duration
given in the “Electrical Characteristics” section. In OEM
mode, the channel that is normally used to measure V_IN
may be assigned to measure the level of the V_DDA pin or
one of five other nodes. This provides a kind of analog
loopback for debug and test purposes. The V_AUX bits in
OEMCFG0 control which voltage source is being
sampled. The various V_AUX channels are level-shifted
differently depending on the signal source, resulting in
different LSB values and signal ranges. See Table 5.
Figure 2. Analog-to-Digital Converter Block Diagram
July 2010
18
M9999-072910-A
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