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.

See Technical Notes.

The DISPLAY HOLD function is optional on standard red and green LED models only.

Leave blank for standard

models.

Add -H for DISPLAY HOLD

option (available on

standard red and green

LED models only).

DMS-20PC - 1 - R S

- C

LED Color:

AS = Standard Amber

BS = Standard Blue

GS = Standard Green

OS = Standard Orange

RS = Standard Red

YS = Standard Yellow

RH = High-Intensity Red

RL = Low-Power Red

BL = Low-Power Blue

PGL = Low-Power Green

Accessories:

DMS-PS1-CM-C

+5V/1.0A AC/DC power supply module

DMS-20-CP

Panel cutout punch

DMS-BZL3-C

DMS-20 bezel assembly

DMS-BZL4-C

DMS-20 bezel assembly with sealing gasket

DMS-EB2-C

Application/evaluation board with standard

MOLEX connector, decimal point solder pads and attenuation

resistor pads.

Input Range:

0 = ±200mV

1 = ±2V

2 = ±20V

3 = ±200V

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

1. REFERENCE OUTPUT (Pin 8) and INPUT (Pin 7): Pin 8 is a precision

reference actively trimmed at the factory. In normal operation, pin 8

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

tions.

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 3 of the DATEL Panel Meter Catalog.

Pin 10 should not be connected to pin 3 (5V RETURN) or to your

system’s analog ground.

3. Decimal Point Placement: The location of the decimal point is user-

selectable, and the decimal point control pins (DP1-DP3) are active

low functions. Select the appropriate decimal point by tying the

appropriate pin (pin 4, 5 or 6) to pin 3 (5V RETURN). Unused decimal

point location pins should be left open.

Hard wiring is preferable, however, you can use logic gates to

exercise dynamic control over the location of the decimal point if the

following drive conditions are met:

Model

Applied "0" Voltage

Load Current*

DMS-20PC-X-XL

+0.05V max.

0.7mA max.

All Others

+0.4V max.

6mA max.

* The driving gates must be able to sink this much current

Analog Inputs

Min.

Typ.

Max.

Units

Full Scale Input Range:

DMS-20PC-0

–

±200

–

mV

DMS-20PC-1

–

±2

–

Volts

DMS-20PC-2

–

±20

–

Volts

DMS-20PC-3

–

±200

–

Volts

Input Impedence:

DMS-20PC-0, -1

–

1000

–

MΩ

DMS-20PC-2, -3

–

1

–

MΩ

Overvoltage Protection

–

–

±250

Volts

Common Mode Voltage Range

–

–

±2

Volts

CMRR (dc to 60Hz)

–86

–

dB

Performance

Sampling Rate

2.5 reading per second

Accuracy (3 minute warm-up):

DMS-20PC-0 (Vin = +0.19V)

–

±1

±3

Counts

DMS-20PC-1 (Vin = +1.9V)

–

±1

±3

Counts

DMS-20PC-2 (Vin = +19V)

–

±2

±3

Counts

DMS-20PC-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

Power Supply Requirements

Supply Voltage

+4.75

+5.00

+5.25

Volts

Supply Current:

DMS-20PC-X-RL

–

+7

+12

mA

DMS-20PC-X-BL & -PGL

–

+12

+17

mA

DMS-20PC-X-RS, -RH

–

+60

+90

mA

DMS-20PC-X-RS-H

–

+60

+90

mA

DMS-20PC-X-BS

–

+75

+100

mA

DMS-20PC-X-GS-H

–

+90

+120

mA

DMS-20PC-X-AS, -GS, -OS, -YS

–

+90

+120

mA

Display

Display Type and Size

3½ digit, 0.37"/9.4mm 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

–20

–

+75

°C

Humidity (non-condensing)

0

–

95

%

Case Material

Polycarbonate

Weight

0.4 ounces (11 grams)

Performance/Functional Specifications

unless otherwise noted.

Ordering Information

RoHS Compliant Parts: Add "-C" suffix to part number.

Add -C for RoHS

www.murata-ps.com

DMS-20PC Series

3½ Digit, LED Display, Low-Cost, Subminiature

Digital Panel Voltmeters

MPM_DMS_20PC.D02 Page 2 of 6

TECHNICAL NOTES