mikroElektronika 4-20mA click User manual

1. Introduction
Once you have soldered the headers your
board is ready to be placed into desired
mikroBUS™ socket. Make sure to align the
cut in the lower-right part of the board
with the markings on the silkscreen at the
mikroBUS™ socket. If all of the pins are
aligned correctly, push the board all
the way into the socket.
3. Plugging the board in
2 3
2. Soldering the headers
1
4. Essential features
Turn the board upward again. Make sure
to align the headers so that they are
perpendicular to the board, then solder the
pins carefully.
Turn the board upside down so that
bottom side is facing you upwards. Place
shorter parts of the header pins in both
soldering pad locations.
click
Before using your click board™, make sure
to solder 1x8 male headers to both left
and right side of the board. Two 1x8 male
headers are included with the board in
the package.
click
BOARD
www.mikroe.com
4-20mA T click Manual
ver. 1.00
0 100000 022139
4-20mA T Click™ is an accessory board in
mikroBUS™form factor. It’s a compact and
easy solution for adding 4-to-20mA industry
standard communication protocol to your
design. It features ADuM1411 Quad-chanel
digital isolator, MCP4921 12-bit DAC as well
as XTR116 4-20mA current loop transmitter.
4-20mA T Click™ communicates with target
board microcontroller via three mikroBUS™
SPI lines (SDI, SCK, CS). The board is designed
to use 3.3V and 5V power supply. LED diode
indicates the presence of power supply.
4-20mA T
4-20mA T Click™ with it’s ADuM1411,
MCP4921 and XTR116 IC’s is ideal for
using in eld of industrial process control
and test systems. It serves as interface
between sensors or instruments (connected
to microcontroller) and controlled peripherals
in industrial standard current loop. The
board receives the input digital signal from
the microcontroller and sets the output loop
current (4-20mA).

8. Support
MikroElektronika oers Free Tech Support
(www.mikroe.com/esupport) until the
end of product lifetime, so if something goes
wrong, we are ready and willing to help!
7. Code Examples
.com
Once you have done all the necessary
preparations, it’s time to get your click
board up and running. We have provided
the examples for mikroC, mikroBasic and
mikroPascal compilers on our Libstock
website. Just download them and you are
ready to start.
5. 4-20mA T Click™ Board Schematic
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
+3V3
SDI
SCK
CS#
C1
100nF
1
2
3
54
6
7
8
VDD
CS
SCK
SDI LDAC
VREF
GND
VOUT
U2
MCP4921
+5V
C2
100nF
C3
100nF
C4 2.2uF
VCC_iso
GND_iso
SDI
SCK
CS#
GND_iso
C5 10nF
D4
1N4007
D3
1N4007
D2
1N4007
D1
1N4007
CN2
LOOP
VCC_iso
GND_iso
Vref
VCC_iso Vref
!SDI
!SCK
!CS#
R3
2K2
LD1
GREEN
J1
E1 10uF
+5V
+3V3VCC
R2
20K
1
2
3
54
6
7
8
Vref
Iin
Iret
Io E
B
V+
Vreg
U3
XTR116
R1
100
Q1 BCP56
VDD1
GND1
ViA
ViB
ViC
VoD
CTRL1
GND1
ViD
CTRL2
VDD2
GND2
VoA
VoB
VoC
GND2
ADuM1411
U1
ADuM1411
VCC
VCC_iso
GND_iso
VCC
D5 SMBJ33A
AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
MIKROBUS DEVICE CONN.
MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document.
Specication and information contained in the present schematic are subject to change at any time without notice. Copyright © 2012 MikroElektronika. All rights reserved.
6. SMD Jumper
There is one zero-ohm SMD jumper J1 which
is used to select whether 3.3V or 5V power
supply is used. Jumper J1 is soldered in 3.3V
position by default.

Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Mikroe:
MIKROE-1296