EVM Hardware
13
SNIU039 – December 2019
Copyright © 2019, Texas Instruments Incorporated
HDC2022EVM User's Guide
5
EVM Hardware
This section describes the connectors on the EVM and how to properly connect, setup and use the
HDC2022EVM.
Figure 10. HDC2022EVM
5.1
Input/Output Connector Description
5.1.1
J1 & J2 – 5x1 Headers
These headers are not populated and can be installed if the EVM is broken in two sections: PC interface
and Sensor. J1 and J2 allowfor communication of the two sections using a 5-wire cable.The plated
through-holes may also be used as a point to probe these signals during EVM operation.
Jx.1
GND
Jx.2
SDA
Jx.3
SCL
Jx.4
INT
Jx.5
VDD
5.1.2
USB Type A Connector
This connector is used for communications with the PC and provides power for the EVM.
5.2
EVM Operating Conditions
The HDC2022EVM power is supplied via the USB connector. The LDO (U4) converts the 5V from the
USB to 3.3V used by the HDC2022 and the MSP430. The EVM may be directly inserted into a USB port
on a PC or laptop, or may be connected to the latter using the appropriate USB cable.
The controller and device sides of the EVM have different temeperature limits as shown in
. These
are set by the onboard MSP430F5528 and the HDC2022 ICs on the controller and breakout portions
respectively.
Table 2. EVM Temperature Range
Board Section
Conditions
Temperature Range
Controller board
Recommended Operating T
j
Range
-40 °C to 85 °C
Absolute Maximum T
stg
-55 °C to 150 °C
HDC2022 breakout
Recommended Operating T
j
Range
-20 °C to 70 °C
Absolute Maximum T
stg
-65 °C to 150 °C
