Table of Contents
Advertisement
Electrical Characteristics
2.2
Board Jumper Configuration
Power to the VDDIO pin of the AFE4110 and to the JTAG interface can be supplied from either the charge
pump CP18CAP (1.8 × VBAT) or from the JTAG_VCCO. This is controlled by the SW1 switch on the
demonstration board. By default, the switch SW1 is in the USE position (See
and
Figure 7
and
Figure 8
AFE4110 VDDIO is powered from CP18CAP (1.8-V charge pump). For programming/debugging purposes,
the AFE4110 VDDIO must be powered from the JTAG_VCCO by sliding the switch SW1 to pin #1
position.
3
Electrical Characteristics
Figure 4
displays the typical resulting accuracy of the demo-pen after 2-point calibration at 31°C and 43°C.
4
Schematics and Layout
4.1
Schematics
The schematics are located at the end of this document.
4
AFE4110 Thermometer Demonstration Board
Figure 3. Inserting Battery Into Holder
for the top and bottom silk screen views, respectively). In this configuration, the
Figure 4. Measured Temperature Accuracy vs Temperature
Copyright © 2011, Texas Instruments Incorporated
www.ti.com
Section 4.1
for schematics
SLAU417 – December 2011
Submit Documentation Feedback
Advertisement
Table of Contents
