DPM1AS-BL

DPM 1AS-BL 3 Digit Backlit LCD Voltmeter Module PRODUCT DESCRIPTION The DPM 1AS-BL features a 200mV d.c. measurement range with auto-zero and auto-polarity. Decimal points are user selectable. The DPM 1AS-BL features a negative rail generator which enables the meter to measure a signal referenced to its own power supply GND. LED backlighting ensures excellent readability under low light conditions. The design of the panel meter s housing allows the module to be easily snapped into a panel. The module s low cost means it will suit high and low volume applications. The DPM 1AS-BL is intended to replace the DPM 1, DPM 1S, DPM 1-BL and DPM 1S-BL in many applications, usually requiring only minor circuit modifications. FEATURES 5.5mm (0.22 ) Digit Height 200mV d.c. Full Scale Reading 3.0 to 7.5V or 6.0 to 15.0V Operation Auto-zero and Auto-polarity Programmable Decimal Points LED Backlighting TYPICAL APPLICATIONS ORDERING INFORMATION Precision Instrumentation Systems Stock Number Power Supply Monitoring Standard Meter DPM 1AS-BL Hand held instruments Panel-Mount Indication Low Power Voltage Measurement ELECTRICAL SPECIFICATIONS Specification Min. Typ. Max. Unit Accuracy (overall error) * 0.1 % (1 count) Linearity 1 count Sample rate 2.5 samples/sec Operating temperature range 0 50 C Temperature stability 250 ppm/C Meter supply voltage V+ to GND configuration 3.0 5.0 7.5 V d.c. V+ to V- configuration 6.0 9.0 15.0** V d.c. Meter supply current V+ to GND configuration 350 m A V+ to V- configuration 175 m A Backlight supply voltage 4.75 5.0 *** V d.c. Backlight supply current 5V d.c. 15 30**** mA Input leakage current (Vin = 0V) 1 10 pA * To ensure maximum accuracy, re-calibrate periodically. ** Operation of the meter beyond the maximum supply voltage rating may cause permanent damage to the meter. *** An external series resistor is required above 5V, see Applications. **** This specification linearly derates to 20mA 50C. Unless otherwise noted, specifications apply at T =25C, V =5Vd.c. (f =48kHz) and are tested with the module configured for single ended A supply clock input mode. SAFETY To comply with the Low Voltage Directive (LVD 93/68/EEC), input voltages to the modules pins must not exceed 60Vdc. The user must ensure that the incorporation of the panel meter into the users equipment conforms to the relevant sections of BS EN 61010 (Safety Requirements for Electrical Equipment for Measuring, Control and Laboratory Use). LASCAR ELECTRONICS LTD. LASCAR ELECTRONICS INC. LASCAR ELECTRONICS (HK) LIMITED MODULE HOUSE PO BOX 50727 FLAT C, 5/FL., LUCKY FTY. BLDG. WHITEPARISH PALO ALTO 63-65 HUNG TO ROAD WILTSHIRE SP5 2SJ CA 94303-0727 KWUN TONG KOWLOON UK USA HONG KONG TEL: +44 (1794) 884567 TEL: +1 (650) 838 9027 TEL: +852 2797 3219 FAX: +852 2343 6187 FAX: +44 (1794) 884616 FAX: +1 (650) 833 5432 E-mail: sales lascar.co.uk E-mail: lascarus pacbell.net E-mail: b4lascar samsongroup.com.hk PPageage2o2 off44 Page1of4 www.lascarelectronics.comDPM 1AS-BL 3 Digit Backlit LCD Voltmeter Module DIMENSIONS All dimensions in mm (inches) c 30.0 (1.18) ab d 28.0 (1.10) 0.50 (0.02) 2.00 (0.08) 5.00 (0.20) pin width pin pitch a. 2.00 (0.08) b. 6.00 (0.24) c. 1.60 (0.06) d. 6.00 (0.24) Panel cut-out: 28.4 x 11.4 Panel thickness: 1.0 - 2.5 (1.12 x 0.45) (0.04 - 0.10) PANEL FITTING Panel Module 1 2 PIN CONFIGURATION (rear view) FUNCTIONAL BLOCK DIAGRAM V+ BL- Vref CAL CAL LXDP LCOM 110 INHI + A/D 1 8 INLO V- GND DP3 2 1 XDP PPageage2o2 off44 Page2of4 www.lascarelectronics.com 14.0 (0.55) 11.0 (0.43) V+ GND V- BL- INHI INLO DP1 1.26 (0.05) DP2 DP3 XDP