Datasheet DMS-20PC (Murata) - 2

DMS-20PC Series
3½ Digit, LED Display, Low-Cost, Subminiature
Performance/Functional Specifi cations
Digital Panel Voltmeters Typical at TA = +25°C and supply voltage = +5V using the single-ended input circuit, unless otherwise noted.
Analog Inputs Min. Typ. Max. Units Ordering Information Full Scale Input Range: DMS-20PC - 1 - R S - C
DMS-20PC-0 – ±200 – mV Add -C for RoHS DMS-20PC-1 – ±2 – Volts
Input Range:
0 = ±200mV Leave blank for standard DMS-20PC-2 – ±20 – Volts 1 = ±2V models. DMS-20PC-3 – ±200 – Volts 2 = ±20V Add -H for DISPLAY HOLD 3 = ±200V option (available on
Input Impedence:
standard red and green DMS-20PC-0, -1 – 1000 – MΩ LED models only). DMS-20PC-2, -3 – 1 – MΩ
LED Color:
AS = Standard Amber RS = Standard Red
Overvoltage Protection
➀ – – ±250 Volts BS = Standard Blue YS = Standard Yellow
Common Mode Voltage Range
– – ±2 Volts GS = Standard Green RH = High-Intensity Red OS = Standard Orange RL = Low-Power Red
CMRR (dc to 60Hz)
– 86 – dB BL = Low-Power Blue Performance PGL = Low-Power Green
Sampling Rate
2.5 reading per second Accessories: DMS-20-CP Panel cutout punch
Accuracy
(3 minute warm-up): DMS-BZL3-C DMS-20 bezel assembly DMS-20PC-0 (Vin = +0.19V) – ±1 ±3 Counts DMS-BZL4-C DMS-20 bezel assembly with sealing gasket DMS-20PC-1 (Vin = +1.9V) – ±1 ±3 Counts DMS-EB2-C Application/evaluation board with standard MOLEX connector, decimal point solder pads and attenuation DMS-20PC-2 (Vin = +19V) – ±2 ±3 Counts resistor pads. DMS-20PC-3 (Vin = +190V) – ±2 ±3 Counts A panel-mount retaining clip is supplied with each model.
Zero Reading (Vin = 0 Volts)
“–001” “000” “001”
Temperature Drift
(0 = +60°C) – ±0.2 ±0.4 Cnts/°C
See www.murata.com/products/power for model-specific availability. Power Supply Requirements Supply Voltage
+4.75 +5.00 +5.25 Volts
TECHNICAL NOTES Supply Current: RoHS Compliant Parts:
Add "-C" suffi x to part number.
1. REFERENCE OUTPUT (Pin 8) and INPUT (Pin 7)
: Pin 8 is a precision DMS-20PC-X-RL – +7 +12 mA reference actively trimmed at the factory. In normal operation, pin 8 DMS-20PC-X-BL & -PGL – +12 +17 mA must be tied to pin 7 to achieve all listed accuracy and drift specifi ca- DMS-20PC-X-RS, -RH – +60 +90 mA tions. DMS-20PC-X-RS-H – +60 +90 mA
2. ANALOG COMMON (Pin 10)
: This pin is connected to an internal, DMS-20PC-X-BS – +75 +100 mA low-noise, "relative" ground. It is used in certain differential and DMS-20PC-X-GS-H – +90 +120 mA "fl oating" measurements as described in the Applications section DMS-20PC-X-AS, -GS, -OS, -YS – +90 +120 mA of this data sheet and Ap Note DMS-AN3 at http://www.murata-ps.com/data/meters/dms-an3.pdf. Pin 10 should
Display
not be connected to pin 3 (5V RETURN) or to your system’s analog
Display Type and Size
3½ digit, 0.37"/9.4mm high LED ground.
Polarity Indication
Autopolarity ("–" for negative Vin)
3. Decimal Point Placement
: The location of the decimal point is user-
Overrange Indication
"–1_ _ _ " for negative inputs selectable, and the decimal point control pins (DP1-DP3) are active "1_ _ _ " for positive inputs low functions. Select the appropriate decimal point by tying the
Physical/Environmental
appropriate pin (pin 4, 5 or 6) to pin 3 (5V RETURN). Unused decimal
Operating Temperature
0 – +60 °C point location pins should be left open.
Storage Temperature
–20 – +75 °C Hard wiring is preferable, however, you can use logic gates to
Humidity (non-condensing)
0 – 95 % exercise dynamic control over the location of the decimal point if the
Case Material
Polycarbonate following drive conditions are met:
Weight
0.4 ounces (11 grams)
Model Applied "0" Voltage Load Current*
➀ Applies for transient or continuous overvoltages applied to (+) INPUT HI (pin 11) DMS-20PC-X-XL +0.05V max. 0.7mA max. 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. All Others +0.4V max. 6mA max. ➁ See Technical Notes. * The driving gates must be able to sink this much current ➂ The DISPLAY HOLD function is optional on standard red and green LED models only.
www.murata-ps.com/support MPM_DMS_20PC.F01
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