Texas Instruments XTR300EVM, Руководство пользователя, Страница: 8 / 19

Input Signal
Vin
DMM
(DC_Amp)
OUT IN
SET
10
I V
R
=
Basic EVM Configuration
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3.2 Current Mode Configurations
3.2.1 Single-Ended Output
The first current-mode configuration creates a single-ended output from a single-ended input. The jumper
settings for this configuration are listed in
Table 6 . Connect your load to TB4 between OUT+ and OUT–.
Apply ±15 V to V+ and V–. Connect a 5-V signal to V
IN
. Measure the current through the load by attaching
your digital multimeter (DMM) between OUT– and GND. The current though the load is approximately 20
mA. The current output is calculated by the transfer function in
Equation 3 :
(3)
The default EVM value for R
SET
is 2.5 k Ω .
Table 6. Single Ended Current Output Jumper Settings
Jumper Function
J1 On
J2 On
J3 On
J4 Off
J5 Off
J6 Off
J7 Off
Figure 6. XTR300 Single-Ended Current Output Configuration Circuit Drawing
8 XTR300EVM SBOU034A – February 2006 – Revised February 2013
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