DMS-30LCD Series

3½ Digit, LCD Display Digital Panel Voltmeters

www.murata-ps.com

MPM_DMS30LCD.D01 Page 2 of 6

TECHNICAL NOTES

Performance/Functional Specifications

or +9V (using the differential input circuit), unless otherwise noted.

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.

Listed spec applies to 5V-powered models only. For 9V-powered models, both

(–) INPUT LO (pin 12) and (+) INPUT HIGH (pin 11) must always be at least

1.5V above –BATTERY (pin 3) and at least 1.5V below +BATTERY (pin 1).

See Technical Notes.

DMS-30LCD - 1 - 5

- C

Input Range:

0 = ±200mV

1 = ±2V

2 = ±20V

3 = ±200V

Accessories:

DMS-30-CP

Panel cutout punch

DMS-BZL1-C

DMS-30 bezel assembly

DMS-BZL2-C

DMS-30 bezel assembly with sealing gasket

RN-DMS

Gain/offset potentiometer kit for DMS-EB,

DMS-EB-AC/DC and DMS-EB-DC/DC

Add-On Application Boards:

DMS-EB-C

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

DMS-EB-HTB-C

High-accuracy temperature probe sensing for

±200mV models

DMS-EB-DC/DC-C

Provides isolated +5V power

DMS-EB-TCJ-C

J-type thermocouple inputs for ±2V models

DMS-EB-TCK-C

K-type thermocouple inputs for ±2V models

DMS-EB-RMS-C

For true rms measurements of ac voltages

DMS-EB-AC/DC-C

For ac line-powered applications

Leave blank for standard

models.

Add B for backlit models.

Power Source:

5 = +5V

9 = +9V

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 approximately

+2V. This output should be buffered if used to drive external 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 “float-

ing” measurements as described in the Applications section of this

data sheet and Ap Note 3 of the DATEL Panel Meter Catalog. Pin 10

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

Analog Inputs

Min.

Typ.

Max.

Units

Full Scale Input Range:

DMS-30LCD-0

–

±200

–

mV

DMS-30LCD-1

–

±2

–

Volts

DMS-30LCD-2

–

±20

–

Volts

DMS-30LCD-3

–

±200

–

Volts

Input Impedence:

DMS-30LCD-0, -1

100

1000

–

M

DMS-30LCD-2, -3

0.8

1

–

M

Overvoltage Protection

–

–

±250

Volts

DMS-30LCD-0, -1

–

–

±100

Volts

DMS-30LCD-2, -3

–

–

±250

Volts

Common Mode Voltage Range

–

–

±2

Volts

CMRR (dc to 60Hz)

–

86

–

dB

Control Inputs

Decimal Pt. Placement (Pins 4-6):

Functionality

Logic Compatibility

Tie to pin 3 to activate

TTL (on 5V-powered models)

Display Test (Pin 2)

Tie to pin 1 to activate

Backlight (Pin 2)

Tie to pin 3 to turn on backlight

Performance

Sampling Rate

2.5 reading per second

Accuracy (1 minute warm-up):

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

–

±1

±2

Counts

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

–

±1

±2

Counts

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

–

±2

±3

Counts

DMS-30LCD-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 Out (Pin 9)

+1.20

+1.23

+1.25

Volts

Power Supply Requirements (5V Models)

Supply Voltage

+4.75

+5.00

+5.25

Volts

Supply Current:

Standard Models

–

800

1200

μA

Backlit Models

–

45

60

mA

Power Supply Requirements (9V Models)

Supply Voltage

+7.5

+9.00

+14.0

Volts

Supply Current:

Standard Models

–

350

600

μA

Backlit Models

–

45

60

mA

Display

Display Type and Size

3½ digit, 0.4"/10.2mm high LCD

Polarity Indication

Autopolarity ("–" for negative Vin)

Overrange Indication

"–1_ _ _ " for negative inputs

"1_ _ _ " for positive inputs

Ordering Information

Physical/Environmental

Operating Temperature

0

–

+60

°C

Storage Temperature

–20

–

+75

°C

Humidity (non-condensing)

0–

95

%

Case Material

Polycarbonate

Weight

0.75 ounces (21 grams)

Add -C for RoHS