www.murata-ps.com

www.murata-ps.com/support

For full details go to

www.murata-ps.com/rohs

DMS-30LCD Series

3½ Digit, LCD Display Digital Panel Voltmeters

MPM_DMS30LCD.E01 Page 1 of 6

Offering all the outstanding features and benefits of Murata Power Solutions’ industry

leading DMS-20LCD Series of 3½ 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 Murata Power

Solutions’ 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.

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

+1.23V REFERENCE OUT

(+) INPUT HI

ANALOG

(–) INPUT LO

COMMON

REFERENCE OUT

REFERENCE IN

R1

DP 1

DP 2

DP 3

6

5

+5V SUPPLY/

+BATTERY

4

9

11

12

10

8

7

1

3

DC/DC

CONVERTER

2

5V RETURN/

+5V

–BATTERY

–5V

+5V

REF.

R2

1.23V

DATA

+2.0V

V+

909k

V–

A/D

CONVERTER

0 Vdc

0.01µF

1

DISPLAY TEST/

BACKLIGHT

J1

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.

1.82k

DC/DC converter is not used on 9V-powered models,

J1 is connected.

Display Test function is not available on backlit models.

3

2

1

3

2