(+) INPUT HI

(–) INPUT LO

ANALOG

COMMON

DP4

REFERENCE IN/OUT

+5V SUPPLY

R1

DP 1

DP 2

DP 3

6

5

4

9

11

12

10

8

7

1

3

DC/DC

CONVERTER

2

5V RETURN

+5V

–5V

+5V

2.5V

REF.

R2

DATA

V+

V–

A/D

CONVERTER

0 Vdc

0.01μF

DISPLAY HOLD

DISPLAY TEST

R2 is not used on ±2V (-1) models.

R2 = 101k on ±20V (-2) models and 9.2k on ±200V (-3) models.

909k

1

1

MPM_DMS-40PC.C03 Page 1 of 6

DMS-40PC Series

4½ Digit, LED Display Digital Panel Voltmeters

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com

DMS-40PC Series, 4½ Digit, LED Display, Miniature DPM’s are fully self-contained,

component-like, plug-in meters that provide scientific-grade accuracy (typically ±2 counts

or ±0.005% of full scale) and outstanding reliability at a very affordable price.

Within its miniature (2.17” x 0.92” x 0.56”), epoxy-encapsulated package, each meter

contains a precision reference circuit; a high-resolution, autozeroing, factory-calibrated

A/D converter; and a large (0.52”/13.2mm), easy-to-read, LED display. LED’s are available

in red, yellow and green colors. Red LED’s are also offered in high-intensity or low-power

versions.

The versatile design of the DMS-40PC Series assures trouble-free installation and

long-term operation. Differential input voltage ranges include ±2V, ±20V and ±200V. Input

impedance is a minimum 800kΩ. Non-inverting inputs are overvoltage protected to ±250V,

and CMRR is typically 86dB (dc to 60Hz).

The DMS-40PC's epoxy-encapsulated package has an integral bezel and color filter.

The moisture and vibration-proof package is extremely rugged and well suited for harsh

environments and extended temperatures. Devices are fully specified for

0 to +50°C operation.

All models operate from a single +5V supply and typically consume 500mW. Low-

power models, whose display is just as bright as standard models, typically consume

175mW. DISPLAY TEST and HOLD functions are standard on each meter, and a complete

set of BCD outputs are optional for sending data to CPU's or remote displays.

FEATURES

Precision, autozeroing, factory-calibrated A/D converter

Scientific-grade accuracy, ±2 counts

Miniature size:

2.17" x 0.92" x 0.56"

55mm x 23mm x 14mm

Large (0.52"/13.2mm) LED display

Choice of red, green or yellow colors

High-intensity or low-power red LED's optional

Single +5V supply (175mW for low-power models)

Epoxy-encapsulated, 12-pin DIP with built-in color filter

and bezel

3 differential input voltage ranges

DISPLAY HOLD and TEST functions

Optional BCD data outputs for CPU interface

0 to +50°C temperature range