mikroElektronika Comparator click User manual

2 3
2. Soldering the headers
3. Plugging the board in
Once you have soldered the headers your
board is ready to be placed into the 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 the
pins are aligned correctly,
push the board all the way
into the socket.
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
the bottom side is facing you upwards.
Place shorter pins of the header into the
appropriate soldering pads.
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.
4. Essential features
Comparator click can be used with a single
or dual power supply. If a single power
supply is used, the oset voltage can be as
low as 2.0 mV, with a range from 2.0 VDC to
36 VDC. For dual supplies, the range is from
±1.0 VDC to ±18 VDC. The resulting output
is compatible with TTL, DTL, ECL, MOS and
CMOS logic systems.
1
Comparator click, carrying the LM2903 IC, has
two independent precision voltage compara-
tors. Two pairs of screw terminals allow you
to connect separate inputs (additional two
screw terminals are for GND connections).
Two potentiometers are placed between
the terminals and the IC. Each input has its
own Interrupt pin on the mikroBUS™ socket
(one on the INT pin, the other in place of the
mikroBUS™AN pin), here marked 01 and 02.
1. Introduction
Comparator click manual
ver 1.01
0100000080429
Comparator click
click
BOARD™
www.mikroe.com

VCC
VCC
AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
MIKROBUS
VCC
VCC
LM 2903
LO1
HI1
C1
100nF
R1
2K2
R2
1K2
Q1 Q2
CON1
CON3
CON2
P2
P1
VCC
LO2 HI2
R3
2K2
R4
1K2
Q3
Q4
OUT1
IN1-
IN1+
OUT2
IN2-
IN2+
Q5 Q6
R5
4K7
R6
4K7
OUT1 OUT2
R7
20K
R8
20K
VCC
IN1-
IN1+
IN2-
IN2+
J1
OUTPUT1
OUTPUT2
VCC-3.3V VCC-5V
PWR
R9
2K2
VCC
In 1-
In 1+
GND In 2+
In 2-
Out 2
V+Out 1
8. Code examples
MikroElektronika oers free tech support
(www.mikroe.com/support) until the end of
the product’s lifetime, so if something goes
wrong, we’re ready and willing to help!
Once you have done all the necessary
preparations, it’s time to get your click board™
up and running. We have provided examples
for mikroC™, mikroBasic™and mikroPascal™
compilers on our Libstock website. Just
download them and you are ready to start.
.com
6. Dimensions
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 © 2015 MikroElektronika.
All rights reserved.
mm mils
LENGTH 57.15 2250
WIDTH 25.4 1000
HEIGHT* 15 590
5. Schematic
7. SMD jumper
9. Support
25.4 mm / 1000 mils
57.15 / 2250 mils
* without headers
10. Disclaimer
LOGIC SEL is used
to determine
whether 5V or
3.3V logic level
is used on the
interrupt pins.

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