DMS-30LCD Series www.murata-ps.com 3 Digit, LCD Display Digital Panel Voltmeters Offering all the outstanding features and bene ts of Murata Power Solutions industry FEATURES leading DMS-20LCD Series of 3 Digit LCD Panel Meters, DMS-30LCD meters offer larger, Large (0.4 /10.2mm), enhanced-contrast, LCD display more easily readable displays at slightly higher power consumptions. Like all DMS Series Single +5V supply or 9V battery LCD meters, these miniature (2.17 x 0.92 x 0.43), epoxy-encapsulated devices offer component-like ease-of-use, outstanding reliability and easy installation in either panels or Power as low as 3.2mW pc-cards. Miniature size: DMS-30LCD devices operate from a single +5V supply or a 9V battery. Battery-oper- 2.17 x 0.92 x 0.43 (55mm x 23mm x 11mm) ated units typically draw 350A and consume a mere 3.2mW. Backlit models are available Epoxy-encapsulated, 12-pin DIP for low-light applications though we have found many designers prefer Murata Power Backlit displays optional Solutions unique low-power LED meters in those circumstances. 4 differential input voltage ranges Offering 4 optional input voltage ranges (200mV, 2V, 20V or 200V), DMS-30LCD meters have an extremely user-friendly input structure. They can be used in differential High accuracy, 1 count (0.05%) or single-ended modes. Input impedance is a minimum 800k. CMRR is typically 86dB. Autopolarity changeover and overrange indication CMV is 2V, and inputs are overvoltage protected to 100V. User-selectable decimal point placement Each meter incorporates an extremely stable, double regulated reference and is fully Numerousplug-o application boards calibrated at our factory prior to encapsulation. We guarantee outstanding initial accuracy (1 count) and excellent stability over temperature (0.15 counts/C). These extremely 0 to +60C temperature range rugged meters are moisture and vibration proof and never require adjustment or recalibra- tion. For popular applications (4-to-20mA, rms-to-dc conversion, ac line power, J and K thermocouples, etc.), the DMS-30LCD Series includes a complete line ofplug-o applica- tion boards that conveniently convert your meter into an application-speci c instrument. +5V 1 12 V+ +5V SUPPLY/ () INPUT LO +BATTERY 1 R2 0.01F 5V 3 2 R1 2 11 DC/DC DISPLAY TEST/ (+) INPUT HI CONVERTER V BACKLIGHT 909k +2.0V 10 3 5V RETURN/ J1 A/D ANALOG BATTERY CONVERTER COMMON 0 Vdc 1.23V DATA REF. 4 9 DP 3 +1.23V REFERENCE OUT 1.82k 5 8 DP 2 REFERENCE OUT +5V 7 6 DP 1 REFERENCE IN 2 1 R2 is not used on 200mV (-0) models or 2V (-1) models. DC/DC converter is not used on 9V-powered models, R2 = 100k on 20V (-2) models and 9.1k on 200V (-3) models. J1 is connected. 3 Display Test function is not available on backlit models. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MPM DMS30LCD.E01 Page 1 of 6DMS-30LCD Series 3 Digit, LCD Display Digital Panel Voltmeters Performance/Functional Speci cations Typical at TA = +25C and supply voltage = +5V (using the single-ended input circuit) or +9V (using the differential input circuit), unless otherwise noted. Physical/Environmental Analog Inputs Min. Typ. Max. Units Operating Temperature 0 +60 C Full Scale Input Range: Storage Temperature 20 +75 C DMS-30LCD-0 200 mV Humidity (non-condensing) 0 95 % DMS-30LCD-1 2 Volts Case Material Polycarbonate DMS-30LCD-2 20 Volts Weight 0.75 ounces (21 grams) DMS-30LCD-3 200 Volts Input Impedence: Applies for transient or continuous overvoltages applied to (+) INPUT HI (pin 11) with () INPUT LO (pin 12) properly connected. Pin 12 is not overvoltage DMS-30LCD-0, -1 100 1000 M protected (see Figure 1). Voltages applied to pin 12 should not exceed the DMS-30LCD-2, -3 0.8 1 M supply voltage. Listed spec applies to 5V-powered models only. For 9V-powered models, both Overvoltage Protection () INPUT LO (pin 12) and (+) INPUT HIGH (pin 11) must always be at least DMS-30LCD-0, -1, -2 100 Volts 1.5V above BATTERY (pin 3) and at least 1.5V below +BATTERY (pin 1). DMS-30LCD -3 250 Volts See Technical Notes. 2 Volts Common Mode Voltage Range CMRR (dc to 60Hz) 86 dB Ordering Information Control Inputs DMS-30LCD - 1 - 5 - C Decimal Pt. Placement (Pins 4-6): Functionality Tie to pin 3 to activate Add -C for RoHS Logic Compatibility TTL (on 5V-powered models) Input Range: Leave blank for standard 0 = 200mV Display Test (Pin 2) Tie to pin 1 to activate models. 1 = 2V Backlight (Pin 2) Tie to pin 3 to turn on backlight Add B for backlit models. 2 = 20V Power Source: Performance 3 = 200V 5 = +5V 9 = +9V Sampling Rate 2.5 reading per second Accuracy (1 minute warm-up): See www.murata-ps.com/dpm-availability for model-speci c availability. DMS-30LCD-0 (Vin = +0.19V) 1 2 Counts Accessories: DMS-30LCD-1 (Vin = +1.9V) 1 2 Counts DMS-30-CP Panel cutout punch DMS-BZL1-C DMS-30 bezel assembly DMS-30LCD-2 (Vin = +19V) 2 3 Counts DMS-BZL2-C DMS-30 bezel assembly with sealing gasket DMS-30LCD-3 (Vin = +190V) 2 3 Counts Add-On Application Boards: Zero Reading (Vin = 0 Volts) 001 000 001 DMS-EB-C Multi-purpose (gain/offset, 4-20mA, etc.) DMS-EB-DC/DC-C Provides isolated +5V power Temperature Drift (0 = +60C) 0.2 0.4 Cnts/C DMS-EB-RMS-C For true rms measurements of ac voltages +1.23V Reference Out (Pin 9) +1.20 +1.23 +1.25 Volts DMS-EB-AC/DC-C For ac line-powered applications Power Supply Requirements (5V Models) A panel-mount retaining clip is supplied with each model. Supply Voltage +4.75 +5.00 +5.25 Volts Supply Current: TECHNICAL NOTES Standard Models 800 1200 A 1. +1.23V REFERENCE OUTPUT (Pin 9): This pin is the output of the Backlit Models 45 60 mA meters precision +1.23V internal reference, and it is referenced to Power Supply Requirements (9V Models) ANALOG COMMON (pin 10) which sits at a potential of approximately Supply Voltage +7.5 +9.00 +14.0 Volts +2V. This output should be buffered if used to drive external loads Supply Current: since sourcing more than 15A from pin 9 can affect both the initial accuracy and temperature drift of the meter. Standard Models 350 600 A 2. ANALOG COMMON (Pin 10): This pin is connected to an internal, Backlit Models 45 60 mA low-noise, relative ground. It is used in certain differential and oat- Display ing measurements as described in the Applications section of this data Display Type and Size 3 digit, 0.4 /10.2mm high LCD sheet and Ap Note DMS-AN3 at Polarity Indication Autopolarity for negative Vin)