Texas Instruments BUF22821 Evaluation board BUF22821EVM-USB BUF22821EVM-USB Datenbogen
Produktcode
BUF22821EVM-USB
V
=
DAC_CHANNEL
V x Code_in_decimal
1024
S
BUF22821EVM-USB Software Overview
When JMP5 and the software are set as shown in
, the second I
2
C address can be configured.
Figure 18. JMP5 Setting for Logic
‘
1
’
6.2.2
Measuring the Power Supply
You must measure the power supply (V
S
) with respect to the GND on the BUF22821 Test Board and enter
it in the Vsup field located in the top section of the software interface as shown in
Figure 19. Measuring and Entering Power-Supply Voltage
The voltage out of each digital-to-analog converter (DAC) is calculated according to the V
S
value entered.
Changing the value in the channel 6 cell as shown below, for instance, immediately changes the output of
channel 6 to 0.996 V. The calculation is performed according to
channel 6 to 0.996 V. The calculation is performed according to
(3)
19
SBOU117
–
September 2011
BUF22821EVM-USB Evaluation Board and Software Tutorial
Copyright
©
2011, Texas Instruments Incorporated