DMS-30LCD Series
3�½ Digit, LCD Display Digital Panel Voltmeters
FEATURES
Large (0.4"/10.2mm), enhanced-contrast, LCD display
Single +5V supply or 9V battery
Power as low as 3.2mW
Miniature size:
2.17" x 0.92" x 0.43" (55mm x 23mm x 11mm)
Epoxy-encapsulated, 12-pin DIP
Backlit displays optional
4 differential input voltage ranges
High accuracy, ±1 count (±0.05%)
Autopolarity changeover and overrange indication
User-selectable decimal point placement
Numerous "plug-on" application boards
0 to +60°C temperature range
Offering all the outstanding features and benefits of DATEL’s industry leading DMS-
20LCD Series of 3�½ Digit LCD Panel Meters, DMS-30LCD meters offer larger, more easily
readable displays at slightly higher power consumptions. Like all DMS Series LCD meters,
these miniature (2.17” x 0.92” x 0.43”), epoxy-encapsulated devices offer component-like
ease-of-use, outstanding reliability and easy installation in either panels or pc-cards.
DMS-30LCD devices operate from a single +5V supply or a 9V battery. Battery-oper-
ated units typically draw 350μA and consume a mere 3.2mW. Backlit models are available
for low-light applications; though we have found many designers prefer DATEL’s unique
low-power LED meters in those circumstances.
Offering 4 optional input voltage ranges (±200mV, ±2V, ±20V or ±200V), DMS-30LCD
meters have an extremely user-friendly input structure. They can be used in differential
or single-ended modes. Input impedance is a minimum 800kΩ. CMRR is typically 86dB.
CMV is ±2V, and inputs are overvoltage protected to ±100V.
Each meter incorporates an extremely stable, double regulated reference and is fully
calibrated at our factory prior to encapsulation. We guarantee outstanding initial accuracy
(±1 count) and excellent stability over temperature (±0.15 counts/°C). These extremely
rugged meters are moisture and vibration proof and never require adjustment or recalibra-
tion.
For popular applications (4-to-20mA, rms-to-dc conversion, ac line power, J and K
thermocouples, etc.), the DMS-30LCD Series includes a complete line of "plug-on" applica-
tion boards that conveniently convert your meter into an application-specific instrument.
+5V
+5V SUPPLY/ 1
+BATTERY
–5V
3
V+
R2
1
12
(–) INPUT LO
0.01μF
V–
+2.0V
DISPLAY TEST/ 2
BACKLIGHT
DC/DC
2
CONVERTER
R1
909k
11
(+) INPUT HI
5V RETURN/ 3
–BATTERY
J1
0 Vdc
A/D
CONVERTER
DATA
1.23V
REF.
10 ANALOG
COMMON
DP 3
4
1.82k
5
+5V
9
+1.23V REFERENCE OUT
DP 2
8
REFERENCE OUT
DP 1
6
7
REFERENCE IN
1
R2 is not used on ±200mV (-0) models or ±2V (-1) models.
R2 = 100k on ±20V (-2) models and 9.1k on ±200V (-3) models.
2
DC/DC converter is not used on 9V-powered models,
J1 is connected.
Display Test function is not available on backlit models.
3
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MPM_DMS30LCD.D01
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MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
