Performance/Functional Specifications

Typical at TA = +25°C and supply voltage = +5V using the single-ended input

circuit, unless otherwise noted.

DMS-30PC - 1 - R S - C

LED Color:

AS = Standard Amber

BS = Super Blue

GS = Standard Green

OS = Standard Orange

QS = Standard Aqua

RS = Standard Red

YS = Standard Yellow

RH = High-Intensity Red

GL = Low-Power Green

OL = Low-Power Orange

RL = Low-Power Red

VFS = Blue-Green

1. +1.23V REFERENCE OUTPUT (Pin 9): This pin is the output of the

meter’s precision +1.23V internal reference, and it is referenced to

ANALOG COMMON (pin 10) which sits at a potential of approxi-

mately +2V. This output should be buffered if used to drive exter-

nal loads since sourcing more than 15μA from pin 9 can affect

both the initial accuracy and temperature drift of the meter.

2. ANALOG COMMON (Pin 10): This pin is connected to an internal,

low-noise, "relative" ground. It is used in certain differential and

"floating" measurements as described in the Applications section

of this data sheet and Ap Note DMS-AN3 at

http://www.murata-ps.com/data/meters/dms-an3.pdf. Pin 10

should not be connected to pin 3 (5V RETURN) or to your system’s

analog ground.

3. REFERENCE OUTPUT (Pin 8) and INPUT (Pin 7): Pin 8 is a preci-

sion reference actively trimmed at the factory. In normal operation,

pin 8 must be tied to pin 7 to achieve all listed accuracy and drift

specifications.

Accessories:

DMS-30-CP

Panel cutout punch

DMS-BZL1-C

DMS-30 bezel assembly

DMS-BZL2-C

DMS-30 bezel assembly with sealing gasket

Add-On Application Boards:

DMS-EB-C

Multi-purpose (gain/offset, 4-20mA, etc.)

DMS-EB-HTB

High-accuracy temperature probe sensing for

±200mV models

DMS-EB-DC/DC

Provides isolated +5V power

DMS-EB-RMS-C

For true rms measurements of ac voltages

DMS-EB-AC/DC-C For ac line-powered applications

Input Range:

0 = ±200mV

1 = ±2V

2 = ±20V

3 = ±200V

±200V available on the

following models only:

-BS (Super Blue)

-GS (Standard Green)

-RS (Standard Red)

-RL (Low-Power Red)

-VFS (Blue-Green)

➀ Applies for transient or continuous overvoltages applied to (+) INPUT HI (pin 11) with

(–) INPUT LO (pin 12) properly connected. Pin 12 is not overvoltage protected

(see Figure 1). Voltages applied to pin 12 should not exceed the supply voltage.

➁ See Technical Notes.

A panel-mount retaining clip is supplied with each model.

Analog Inputs

Min.

Typ.

Max.

Units

Full Scale Input Range:

DMS-30PC-0

–

±200

–

mV

DMS-30PC-1

–

±2

–

Volts

DMS-30PC-2

–

±20

–

Volts

DMS-30PC-3

–

±200

–

Volts

Input Impedence:

–

DMS-30PC-0, -1

100

1000

–

MΩ

DMS-30PC-2, -3

0.8

1

–

MΩ

Overvoltage Protection

➀

–

–

±250

Volts

Common Mode Voltage Range

–

–

±2

Volts

CMRR (dc to 60Hz)

–86

–

dB

Control Inputs

➁

Decimal Point Placement (Pins 4-6)

Tie to pin 3 to activate

Display Test (Pin 2)

Tie to +5V to activate all segments

Performance

Sampling Rate

2.5 reading per second

Accuracy (3 minute warm-up):

DMS-30PC-0 (Vin = +0.19V)

–

±1

±3

Counts

DMS-30PC-1 (Vin = +1.9V)

–

±1

±3

Counts

DMS-30PC-2 (Vin = +19V)

–

±2

±3

Counts

DMS-30PC-3 (Vin = +190V)

–

±2

±3

Counts

Zero Reading (Vin = 0 Volts)

“–001”

“000”

“001”

Temperature Drift (0 = +60°C)

–

±0.2

±0.4

Cnts/°C

+1.23V Reference Output (Pin 9)

➁

+1.20

+1.23

+1.25

Volts

Power Supply Requirements

Supply Voltage

+4.75

+5.00

+5.25

Volts

Supply Current:

Standard Models

–

+150

+225

mA

Low-Power Models

Red Display

–

+12

+17

mA

Green or Orange Display

–

+60

+100

mA

Display

Display Type and Size

3½ digit, 0.56"/14.2mm high LED

Polarity Indication

Autopolarity ("–" for negative Vin)

Overrange Indication

"–1_ _ _ " for negative inputs

"1_ _ _ " for positive inputs

Physical/Environmental

Operating Temperature

0

–

+60

°C

Storage Temperature

–40

–

+75

°C

Humidity (non-condensing)

0

–

95

%

Case Material

Polycarbonate

Weight

0.75 ounces (21 grams)

Ordering Information

Add -C for RoHS

See www.murata

.com/products/power for model-specific availability.

DMS-30PC Series

3½ Digit, LED Display Low-Power,

Miniature Digital Panel Voltmeters

MPM_DMS_30PC.G01 Page 2 of 6

www.murata-ps.com/support

TECHNICAL NOTES