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DMS20

更新时间： 2024-11-05 23:14:43

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
6页	220K
描述
3 1/2 Digit, LCD Display Low-Cost, Subminiature Digital Panel Voltmeters

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DMS20 数据手册

www.datel.com

DMS-20LCD Se rie s

3½ Digit, LCD Display

Low-Cost, Subminiature

Digital Panel Voltmeters

Actual Size

DMS-20LCD Series, 3½ Digit, LCD Display, Digital Voltmeters represent the

ultimate combination of low price, low power, small size and high performance in digital

meters. Epoxy encapsulated in a subminiature (1.38" x 0.88" x 0.43"), 12-pin DIP

package, these completely self-contained, fully operational meters offer a combination

of ruggedness, long-term reliability and component-like ease-of-use simply not

available in any other meters.

Incorporating a precision reference and a factory-calibrated, autozeroing A/D

converter, DMS-20LCD meters are extremely accurate (±1 count) and are only slightly

larger than their 0.37"/9.4mm, enhanced-contrast, LCD displays. All models incorpo-

rate a built-in bezel and are easily mounted in either panels or pc boards. Both backlit

and non-backlit versions are available.

DMS-20LCD meters have 4 differential input voltage ranges (±200mV, ±2V, ±20V

and ±200V) and a user-friendly input structure. Input impedance is a minimum 800kΩ.

CMRR is typically 86dB with a CMV of ±2V. Non-inverting inputs are overvoltage

protected to ±100V (±250V for the ±200V input model).

All DMS-20LCD meters operate from a single +5V supply (drawing 400µA) or a

single +9V supply/battery (drawing 230µA). All models have a low-battery ("B")

annunciator and feature autopolarity changeover and overrange indication.

Also available is an application/evaluation board (DMS-EB2) that plugs directly onto

the back of any DMS-20LCD allowing direct inputs for common applications such as

4-20mA inputs, zero/gain adjust, decimal point location, and input voltage dividing.

Features

•

Lowest cost

Lowest power, 2mW

Subminiature size:

1.38" x 0.88" x 0.43"

35mm x 22mm x 11mm

•

Large (0.37"/9.4mm), enhanced-

contrast LCD display

•

Backlit displays optional

Epoxy-encapsulated, 12-pin DIP

Panel or pc-board mountable

4 differential input voltage ranges

High accuracy, ±1 count (±0.05%)

Single +5V supply or 9V battery

Low-battery annunciator

User-selectable decimal point placement

0 to +60°C temperature range

+5V

V+

+5V SUPPLY/

+BATTERY

(–) INPUT LO

0.01µF

–5V

DC/DC

(+) INPUT HI

N.C.

CONVERTER

V–

909k

+2.0V

ANALOG

COMMON

5V RETURN/

–BATTERY

A/D

CONVERTER

0 Vdc

DATA

DP 3

DP 2

DP 1

N.C./BACKLIGHT

REFERENCE OUT

REFERENCE IN

+5V

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

R2 = 100k on 20V (-2) models and 9.1k on 200V (-3) models.

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

J1 is connected.

Only used on 200mV (-0) and 2V (-1) models.

Used on backlit models only.

N.C. for non-backlit models.

Figure 1. DMS-20LCD Series Simplified Schematic

DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356

•

Email:sales@datel.com • Internet: www.datel.com

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与DMS20相关器件

型号	品牌	获取价格	描述	数据表
DMS-20	ETC	获取价格	3 1/2 Digit, LCD Display Low-Cost, Subminiature Digital Panel Voltmeters
DMS2085LSD	DIODES	获取价格	P-CHANNEL ENHANCEMENT MODE MOSFET
DMS2085LSD_15	DIODES	获取价格	P-CHANNEL ENHANCEMENT MODE MOSFET WITH INTEGRATED SCHOTTKY DIODE
DMS2085LSD-13	DIODES	获取价格	P-CHANNEL ENHANCEMENT MODE MOSFET
DMS2095LFDB	DIODES	获取价格	P-CHANNEL ENHANCEMENT MODE MOSFET
DMS2095LFDB_15	DIODES	获取价格	P-CHANNEL ENHANCEMENT MODE MOSFET WITH INTEGRATED SCHOTTKY DIODE
DMS2095LFDB-13	DIODES	获取价格	P-CHANNEL ENHANCEMENT MODE MOSFET
DMS2095LFDB-7	DIODES	获取价格	P-CHANNEL ENHANCEMENT MODE MOSFET
DMS-20-CP	MURATA	获取价格	Self-Powered LED Display High-Voltage, 50/60/400Hz AC Line Monitor
DMS-20-CP		获取价格	Self-Powered 3 Digit, LED Display AC Line Voltage Monitors

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