DMS-40LCD-1/2-9-C Murata Power Solutions Inc, DMS-40LCD-1/2-9-C Datasheet

DMS-40LCD-1/2-9-C

Manufacturer Part Number

DMS-40LCD-1/2-9-C

Description

DPM ±2/20V LCD 9V-Pwr

Manufacturer

Murata Power Solutions Inc

Datasheet

1.DMS-30-CP.pdf (6 pages)

Specifications of DMS-40LCD-1/2-9-C

Display Type

4 - 1/2 Digit LCD

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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FEATURES

■

www.murata-ps.com

SIMPLIFIED SCHEMATIC DIAGRAM

Scientiﬁ c-grade accuracy, ±2 counts

Low power, typically 12.5mW

Miniature size:

2.17" x 0.92" x 0.43" (55mm x 23mm x 11mm)

Large (0.4”/10.2mm), enhanced-contrast, LCD display

Backlit displays optional

Epoxy-encapsulated, 12-pin DIP

Panel or pc-board mountable

3 differential, dual, input voltage ranges

Single +5V supply or 9V battery

User-selectable decimal point placement

Low-battery "BAT" annunciator

0 to +50°C temperature range

Low Cost

www.murata-ps.com/rohs

For full details go to

+5V SUPPLY/

5V RETURN/

+BATTERY

–BATTERY

➀ R1 = 100k on ±200mV/±2V (-0/1) models and 909k on all other models.

SELECT

R2 is not used on ±200mV/±2V (-0/1) models.

R2 = 101k on ±2V/±20V (-1/2) models and 9.2k on ±20V/±200V (-2/3) models.

RANGE

DP 3

DP 2

DP 1

0 Vdc

CONVERTER

www.murata-ps.com/dpm

DC/DC

component-like convenience and outstanding reliability, DMS-40LCD Series 4½ Digit DPM’s

provide the ultimate combination of price, precision and convenience. These miniature

(2.17˝ x 0.92˝ x 0.43˝) digital voltmeters combine an advanced, autozeroing A/D converter,

a precision reference circuit and a large (0.4˝/10.2mm high), easy-to-read LCD display in a

single, fully encapsulated, 12-pin DIP package. All models incorporate a built-in bezel and

are easily mounted in either panels or pc boards.

(±200mV/±2V, ±2V/±20V or ±20V/±200V) and is available with a backlit or non-backlit

display. Input impedance is a minimum 800kΩ, and CMRR is typically 86dB (dc to 60Hz).

CMV is ±2V, and all models are overvoltage protected to ±250V (on their non-inverting

inputs).

ing 3.5mA max.) or a single 9V supply/battery (drawing 2.5mA max.). All models feature

autopolarity changeover and overrange indication. A display HOLD function is standard on

all non-backlit models.

ibrated A/D converters, DMS-40LCD meters are able to withstand the harshest environ-

ments and never require adjustment or calibration. Plug-in convenience, long-term stability

and wide operating temperature range (0 to +50°C) make DMS-40LCD meters the right

solution for any high-accuracy DPM requirement.

BAT

➁

+5V

Offering a unique combination of low cost, scientiﬁ c-grade accuracy (±2 counts),

Each DMS-40LCD meter has a dual-range, differential, input conﬁ guration

All DMS-40LCD meters are fully functional and operate from a single +5V supply (draw-

Thanks to their rugged epoxy-based encapsulation and their advanced, factory-cal-

DATA

CONVERTER

–5V

A/D

4½ Digit, LCD Display Digital Panel Voltmeters

V+

V–

➂ Hold function is not available on backlit models.

➁ DC/DC converter is not used on 9V-powered models,

J1 is connected.

DMS-40LCD Series

1.23V

+5V

REF.

0.01μF

04/05/11 MPM_DMS40LCD.C04 Page 1 of 6

≈+2.2V

email: sales@murata-ps.com

➀

HOLD/

BACKLIGHT

DP 4

REFERENCE

IN/OUT

ANALOG

COMMON

(–) INPUT LO

(+) INPUT HI

➂

Related parts for DMS-40LCD-1/2-9-C

DMS-40LCD-1/2-9-C Summary of contents

Page 1

... CMV is ±2V, and all models are overvoltage protected to ±250V (on their non-inverting inputs). All DMS-40LCD meters are fully functional and operate from a single +5V supply (draw- ing 3.5mA max single 9V supply/battery (drawing 2.5mA max.). All models feature autopolarity changeover and overrange indication. A display HOLD function is standard on all non-backlit models ...

Page 2

... V/V ±20/±200 – V/V ➀ Each model in the DMS-40LCD Series offers two input voltage ranges that are 1000 MΩ user-selectable via pin strapping. 5V-powered models can be used to perform either 1 – MΩ differential or single-ended measurements. 9V-powered models can only be used for 1 – ...

Page 3

... Digit, LCD Display Digital Panel Voltmeters 8. Soldering Methods: All models in the DMS-40LCD Series easily withstand most common wave soldering operations. We recommend, however, you evaluate the effects your particular soldering techniques may have on the meter’ ...

Page 4

... Figures 5 and 6. Figure 5 uses a 5V-powered meter. Figure 6 uses a 9V-powered meter. Both ﬁ gures show a DMS-40LCD-0/1 with pin 2 tied to pin 1 yielding a ±2V input range. Connecting pin 10 (ANALOG COMMON) to (–) INPUT LO (pin 12) provides the reference point for the meter’s input. ...

Page 5

... The circuit can be calibrated by ﬁ rst measuring the actual battery volt- age with another meter and then adjusting the gain-adjust potentiom- eter on the back of the DMS-40LCD until a similar reading is obtained. If possible, the resistors in the divider should be ±1% metal-ﬁ lm types with TCR’s less than 50ppm/°C. ...

Page 6

... TYP. 0.040 (1.02) 0.50 (12.7) BEZEL INSTALLATION USA IN MADE ® ® BEZEL RETAINING CLIP INSTALLATION email: sales@murata-ps.com 04/05/11 MPM_DMS40LCD.C04 Page ® 12 (–) INPUT LO 11 (+) INPUT HI 10 ANALOG COMMON 9 HOLD/BACKLIGHT 8 DP4 7 REFERENCE IN/OUT 0.430 (10.92) STANDARD 0.560 (14.22) BACKLIT 0.25 (6.4) TYP. ...

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