DMS-20LCD Series
3�½ Digit, LCD Display Digital Panel Voltmeters
Performance/Functional Specifications
Typical at T
A
= +25°C and supply voltage = +5V (using the single-ended input
circuit) or +9V (using the differential input circuit), unless otherwise noted.
Analog Inputs
Full Scale Input Range:
DMS-20LCD-0
DMS-20LCD-1
DMS-20LCD-2
DMS-20LCD-3
Input Impedence:
DMS-20LCD-0, -1
DMS-20LCD-2, -3
Overvoltage Protection
DMS-20LCD-0, -1, -2
DMS-20LCD-3
Common Mode Voltage Range
CMRR
(dc to 60Hz)
Control Inputs
Decimal Pt. Placement
(Pins 4-6)
Functionality
Logic Compatibility
Backlight
(Pin 9)
Performance
Sampling Rate
Accuracy (1 minute warm-up):
DMS-20PC-0 (Vin = +0.19V)
DMS-20PC-1 (Vin = +1.9V)
DMS-20PC-2 (Vin = +19V)
DMS-20PC-3 (Vin = +190V)
Zero Reading
(Vin = 0 Volts)
Temperature Drift
(0 = +60°C)
–
–
–
–
“–001”
–
±1
±1
±2
±2
“000”
±0.2
±2
±2
±3
±3
“001”
±0.4
Cnts/°C
Counts
Counts
Counts
Counts
2.5 reading per second
Tie to pin 3 to activate
Tie to pin 3 to activate
TTL (on 5V-powered models)
Tie to pin 3 to turn on backlight
Input Range:
0
= ±200mV
1
= ±2V
2
= ±20V
3
= ±200V
Accessories:
DMS-20-CP
DMS-BZL3-C
DMS-BZL4-C
DMS-EB2-C
–
–
–
–
–
–
–
86
±100
±250
±2
–
Volts
Volts
Volts
dB
–
–
–
–
–
100
0.8
1000
1
–
–
M
M
±200
±2
±20
±200
–
–
–
–
mV
Volts
Volts
Volts
Min.
Typ.
Max.
Units
Physical/Environmental
Operating Temperature
Storage Temperature
Humidity (non-condensing)
Case Material
Weight
0
–20
0
–
–
–
+60
+75
95
°C
°C
%
Polycarbonate
0.4 ounces (11 grams)
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.
Ordering Information
DMS-20LCD - 1 - 5
-C
Add -C for RoHS
Leave blank for standard
models.
Add
B
for backlit models.
Power Source:
5
= +5V
9
= +9V
Panel cutout punch
DMS-20 bezel assembly
DMS-20 bezel assembly with sealing gasket
Application/evaluation board with standard
MOLEX connector, decimal point solder pads
and attenuation resistor pads.
A panel-mount retaining clip is supplied with each model.
Power Supply Requirements (5V Models)
Supply Voltage
Supply Current:
Standard Models
Backlit Models
–
–
+400
+35
+650
+50
μA
mA
+4.75
+5.00
+5.25
Volts
TECHNICAL NOTES
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 “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
should not be connected to pin 3 (5V RETURN/–BATTERY) 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/–BATTERY). Unused decimal
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
Power Supply Requirements (9V Models)
Supply Voltage
Supply Current:
Standard Models
Backlit Models
Display
Display Type and Size
Polarity Indication
Overrange Indication
3�½ digit, 0.37"/9.4mm high LCD
Autopolarity ("–" for negative Vin)
"–1_ _ _ " for negative Vin
"1_ _ _ " for positive Vin
–
–
+230
+35
+350
+50
μA
mA
+7.5
+9.0
+14.0
Volts
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MPM_DMS20lcd.B03
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