EVAL-ADUC7032QSPZ Analog Devices Inc, EVAL-ADUC7032QSPZ Datasheet - Page 40
![EVAL DEV QUICK START ADUC7032](/photos/9/24/92482/eval-aduc7032qspz_sml.jpg)
EVAL-ADUC7032QSPZ
Manufacturer Part Number
EVAL-ADUC7032QSPZ
Description
EVAL DEV QUICK START ADUC7032
Manufacturer
Analog Devices Inc
Series
QuickStart™ PLUS Kitr
Type
MCUr
Datasheet
1.EVAL-ADUC7032QSPZ.pdf
(116 pages)
Specifications of EVAL-ADUC7032QSPZ
Contents
Evaluation Board, Power Supply, Cable, Software, Emulator and Documentation
For Use With/related Products
ADuC7032
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 40 of 116
- Download datasheet (3Mb)
ADuC7032-8L
ADC GROUND SWITCH
The ADuC7032-8L features an integrated ground switch pin,
GND_SW, located on Pin 15. This switch allows the user to
dynamically disconnect ground from external devices. It allows
either a direct connection to ground or a connection to ground
via a 20 kΩ resistor. This additional resistor can be used to reduce
the number of external components required for an NTC circuit.
The ground switch feature can be used for reducing power
consumption on application-specific boards.
An example application is shown in Figure 17. This diagram
shows an external NTC used in two modes. One mode uses the
internal 20 kΩ resistor, and the second mode shows a direct
connection to ground via the GND_SW. ADCCFG[7] controls
the connection of the ground switch to ground, and ADCMDE[6]
controls the GND_SW resistance.
R
NTC
REF
Figure 17. Example of External Temperature Sensor Circuits
20kΩ
REG_AVDD
VTEMP
GND_SW
NTC
REG_AVDD
VTEMP
GND_SW
Rev.0 | Page 40 of 116
The possible bit combinations are shown in Table 31.
Table 31. GND_SW Configuration
ADCCFG[7]
0
0
1
1
Figure 18. Internal Ground Switch Configuration
ADCMDE[6]
0
1
0
1
GND_SW
20kΩ
GND_SW
Floating.
Floating.
Direct connection to ground.
Connected to ground via a 20 kΩ
resistor.
ADCCFG[7]
ADCMDE[6]
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