DMS-30PC Series www.murata-ps.com 3 Digit, LED Display Low-Power, Miniature Digital Panel Voltmeters FEATURES The DMS-30PC Series is a broad line of self-contained, fully operational, 3 digit volt- meters with large, easy-to-read LED displays. The 0.56 (14.2mm) high LED s are available Large (0.56 /14.2mm) LED display in a wide variety of colors including red, orange, amber, yellow, green, aqua, blue-green, and 8 LED colors super-blue. A high-intensity version of the red display is optional, as are low-power versions Low-power LEDs optional of the red, orange, and green displays. Epoxy-encapsulated, 12-pin DIP with built-in color lter The small size (2.17 x 0.92 x 0.56 ) of DMS-30PC meters is achieved by integrating and bezel their display, display drivers, reference circuit, and A/D converter into in a single, epoxy- encapsulated assembly. The device s 12-pin, component-like, DIP package is both vibration Miniature size: and moisture proof. Each package incorporates a built-in color lter and bezel and is easily 2.17 x 0.92 x 0.56 (55mm x 23mm x 14mm) mounted in either panels or pc cards. Panel or pc-board mountable These meters are available in four differential input voltage ranges (200mV, 2V, 20V 4 differential input voltage ranges and 200V). Input impedance is 1,000 megohms for the 200mV and 2V inputs and 1 Auto-calibration, 1 count accuracy megohm for the 20V and 200V inputs. CMRR for all devices is 86dB, and inputs are over- voltage protected to 250V. User-selectable decimal point placement Each meter incorporates an extremely stable, double-regulated reference and is fully Single +5V supply (60mW for low-power models) calibrated prior to potting. We guarantee outstanding initial accuracy (1 count) and excellent 0 to +60C temperature range stability (0.15 counts/C). All models operate from a single +5V supply, and the low-power Numerousplug-o application boards models draw as little as 10mA (50mW total power). A DISPLAY TEST function is standard on each device. Low cost For popular applications (4-to-20mA, rms-to-dc conversion, ac line power, J and K ther- mocouples, etc.), the DMS-30PC Series includes a complete line of optionalplug-o appli- cation boards that conveniently convert your meter into an application-speci c instrument. SIMPLIFIED SCHEMATIC DIAGRAM +5V 1 V+ 12 +5V SUPPLY () INPUT LO (1) R2 0.01F 5V 2 R1 11 DC/DC DISPLAY TEST (+) INPUT HI CONVERTER V 909k +2.0V 3 10 A/D ANALOG 5V RETURN COMMON CONVERTER 0 Vdc 1.23V REF. DATA 4 9 DP 3 +1.23V REFERENCE OUT 1.82k 5 8 DP 2 REFERENCE OUT +5V 6 7 DP 1 REFERENCE IN (1) 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. Figure 1. DMS-30PC Series simpli ed schematic For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MPM DMS 30PC.G01 Page 1 of 6DMS-30PC Series 3 Digit, LED Display Low-Power, Performance/Functional Speci cations Miniature Digital Panel Voltmeters Typical at TA = +25C 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-30PC-0 200 mV DMS-30PC - 1 - R S - C DMS-30PC-1 2 Volts Add -C for RoHS Input Range: DMS-30PC-2 20 Volts LED Color: 0 = 200mV DMS-30PC-3 200 Volts AS = Standard Amber 1 = 2V BS = Super Blue Input Impedence: 2 = 20V GS = Standard Green 3 = 200V DMS-30PC-0, -1 100 1000 M OS = Standard Orange 200V available on the QS = Standard Aqua DMS-30PC-2, -3 0.8 1 M following models only: RS = Standard Red -BS (Super Blue) 250 Volts Overvoltage Protection YS = Standard Yellow -GS (Standard Green) Common Mode Voltage Range 2 Volts RH = High-Intensity Red -RS (Standard Red) GL = Low-Power Green -RL (Low-Power Red) CMRR (dc to 60Hz) 86 dB OL = Low-Power Orange -VFS (Blue-Green) Control Inputs RL = Low-Power Red VFS = Blue-Green Decimal Point Placement (Pins 4-6) Tie to pin 3 to activate A panel-mount retaining clip is supplied with each model. Display Test (Pin 2) Tie to +5V to activate all segments Performance See www.murata-ps.com/dpm-availability for model-speci c availability. Sampling Rate 2.5 reading per second Accuracy (3 minute warm-up): Accessories: DMS-30-CP Panel cutout punch DMS-30PC-0 (Vin = +0.19V) 1 3 Counts DMS-BZL1-C DMS-30 bezel assembly DMS-30PC-1 (Vin = +1.9V) 1 3 Counts DMS-BZL2-C DMS-30 bezel assembly with sealing gasket DMS-30PC-2 (Vin = +19V) 2 3 Counts Add-On Application Boards: DMS-30PC-3 (Vin = +190V) 2 3 Counts DMS-EB-C Multi-purpose (gain/offset, 4-20mA, etc.) Zero Reading (Vin = 0 Volts) 001 000 001 DMS-EB-HTB High-accuracy temperature probe sensing for 200mV models Temperature Drift (0 = +60C) 0.2 0.4 Cnts/C DMS-EB-DC/DC Provides isolated +5V power +1.20 +1.23 +1.25 Volts +1.23V Reference Output (Pin 9) DMS-EB-RMS-C For true rms measurements of ac voltages DMS-EB-AC/DC-C For ac line-powered applications Power Supply Requirements Supply Voltage +4.75 +5.00 +5.25 Volts TECHNICAL NOTES Supply Current: Standard Models +150 +225 mA 1. +1.23V REFERENCE OUTPUT (Pin 9): This pin is the output of the meters precision +1.23V internal reference, and it is referenced to Low-Power Models ANALOG COMMON (pin 10) which sits at a potential of approxi- Red Display +12 +17 mA mately +2V. This output should be buffered if used to drive exter- Green or Orange Display +60 +100 mA nal loads since sourcing more than 15A from pin 9 can affect Display both the initial accuracy and temperature drift of the meter. Display Type and Size 3 digit, 0.56 /14.2mm high LED 2. ANALOG COMMON (Pin 10): This pin is connected to an internal, Polarity Indication Autopolarity for negative Vin) low-noise,relativ ground. It is used in certain differential and Overrange Indication1 for negative inputs oatin measurements as described in the Applications section 1 for positive inputs of this data sheet and Ap Note DMS-AN3 at Physical/Environmental