Performance/Functional Specifications

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.

See Technical Notes.

BCD outputs are optional and must be specified in the part number.

See Ordering Information.

Includes high-intensity and BCD-output models.

1. ANALOG COMMON (Pin 10): This pin is an internal, low-noise

ground for the DMS-40PC. It is internally connected to pin 3

(5V RETURN). Do not connect pin 10 to either pin 3 or your system

ground as this will create a ground loop and possibly result in errone-

ous readings.

2. REFERENCE INPUT/OUTPUT (Pin 7): This pin accesses the meter’s

internal reference and is used during the factory calibration proce-

dure. Pin 7 should be left open in most common applications. It can

be used in certain “ratiometric” applications in which it is desirable

for the meter’s reference to track an external reference. See Ap Note

3 in the DATEL Panel Meter Catalog for more details.

3. DISPLAY TEST (Pin 2): Connecting pin 2 to ground (pin 3, 5V

RETURN) will activate all LED segments, and the display will read

“–18888” regardless of the actual applied input. To reduce self-heat-

ing, the display should not be left in the “test” mode for more than 10

seconds. This pin should be left open if unused.

Analog Inputs

Min.

Typ.

Max.

Units

Full Scale Input Range:

DMS-40PC-1

–

±2

–

Volts

DMS-40PC-2

–

±20

–

Volts

DMS-40PC-3

–

±200

–

Volts

Input Impedence:

–

DMS-40PC-1

100

1000

–

MΩ

DMS-40PC-2, -3

0.8

1

–

MΩ

Overvoltage Protection

–

–

±250

Volts

Common Mode Voltage Range

–

–

±2

Volts

CMRR (dc to 60Hz)

–

86

–

dB

Control Inputs

Decimal Pt. Placement (Pins 4-6, 8)

Tie to pin 3 to activate

Display Test (Pin 2)

Tie to pin 3 to activate all segments

Display Hold (Pin 9)

Tie to pin 3 to hold last reading

BCD Outputs

Logic Levels (1 LSTTL load max.):

Logic “1”

+2.4

–

–

Volts

Logic “2”

–

+0.4

+0.8

Volts

Performance

Sampling Rate

2.5 reading per second

Accuracy (3 minute warm-up):

DMS-40PC-1 (Vin = +1.9V)

–

±2

±3

Counts

DMS-40PC-2 (Vin = +19V)

–

±3

±4

Counts

DMS-40PC-3 (Vin = +190V)

–

±3

±4

Counts

Zero Reading (Vin = 0 Volts)

“–001”

“000”

“001”

Temperature Drift (0 = +50°C)

DMS-40PC-1

–

±0.4

±1

Cnts/°C

DMS-40PC-2, -3

–

±0.4

±1.5

Cnts/°C

Power Supply Requirements

Supply Voltage

+4.75

+5.00

+5.25

Volts

Supply Current:

Standard Models

–

+100

+140

mA

Low-Power Models

–

+35

+50

mA

Display

Display Type and Size

4½ digit, 0.52"/13.2mm high LED

Polarity Indication

Autopolarity ("–" for negative Vin)

Overrange Indication

"–0000" (flashing) for negative Vin

"0000" (flashing) for positive Vin

Physical/Environmental

Operating Temperature

0

–

+50

°C

Storage Temperature

–20

–

+75

°C

Accessories:

DMS-30-CP

Panel cutout punch

DMS-BZL1-C

DMS-40 bezel assembly

DMS-BZL2-C

DMS-40 bezel assembly with sealing gasket

DMS-EB-C

Application/evaluation board with standard

MOLEX connector, decimal point solder pads

and attenuation resistor pads.

BCD Output Models:

BCD outputs are only available on standard red meters.

DMS-40PC-1-RS-BCD-C for ±2V input range

DMS-40PC-2-RS-BCD-C for ±20V input range

DMS-40PC-3-RS-BCD-C for ±200V input range

DMS-40PC-1-RL-BCD-C for ±2V input range

DMS-40PC-2-RL-BCD-C for ±20V input range

DMS-40PC-3-RL-BCD-C for ±200V input range

DMS-40PC - 1 - R S - C

LED Color:

GS = Standard Green

RH = High-Intensity Red

RL = Low-Power Red

RS = Standard Red

YS = Standard Yellow

Input Range:

1 = ±2V

2 = ±20V

3 = ±200V

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

Ordering Information

Add -C for RoHS

Humidity (non-condensing)

0

–

95

%

Case Material

Polycarbonate

Weight

0.75 ounces (21 grams)

MPM_DMS-40PC.C03 Page 2 of 6

DMS-40PC Series

4½ Digit, LED Display Digital Panel Voltmeters

www.murata-ps.com

TECHNICAL NOTES