DP-650 Series Miniature LCD Display Digital Panel Meters Description The DP-650 Series is an ultra-compact, low-power LCD meter requiring only 15mW of power. This meter is ideal for applications requiring a highly reliable LCD display in a small package. The snap-in bezel packaging enables easy and rapid installation of the meter. The simplicity of design, overvoltage protection, and low power consumption all contribute to the high reliability of this device. Three input voltage ranges are available: ±200mV, ±2VDC, and ±20VDC. A 4-20mA current input adapter (DP-670) is also offered. Automatic polarity, overrange indication, adjustable decimal point, and display HOLD are standard features. The DP-650 Series employs a dual slope integrating A/D converter, and operates from an internal 100mV reference via a precision DC-to-DC converter. Typical accuracy is ±0.1%. Features T e chnical Notes • Convenient snap-in bezel package 1. The connection shown utilizes differential inputs. For single-ended operation, INPUT(-) is strapped to GND. If the signal is isolated from the power source, connect INPUT(-) to GND • Very low power consumption (5VDC @ 3mA) either directly or through a 10K resistor network as shown to reduce common mode errors. • Differential input, 3 voltage ranges 2. Display holds reading when HOLD is high (+5V). Readings are updated when HOLD is low • 0.1% typical accuracy or floating. • User-selectable decimal point 3. The decimal point is user selectable by connecting the decimal point pins (4, 5, or 6) to DP • Hold-display function COM (pin 3). • Overvoltage protection 4. Full-scale input span is adjusted prior to shipment. Further calibration is possible by adjusting the trimpot mounted on the back of the DPM. • Quantity discounts 5. Unused pins should be left open. Applications Ordering Information • Portable/mobile equipment • Medical instruments Model Description • Avionics/aerospace systems DP-650 Miniature DPM LCD ±200mV • Office equipment DP-652 Miniature DPM LCD ±2V DP-654 Miniature DPM LCD ±20V APS-5 120V AC to 5V DC Power Supply C-10 Connector - 10 pin 6 ACCULEX • 1-888-472-6676 • Fax 1-888-210-0119 • acculex.com DP-650 Series Dimensions Connections Pin No. Pin Name Description 1 V+ +5V power supply 2 GND Power supply ground 3 DP COM Decimal point return 4 DP1 1XX.X (connect to DP COM to turn on) 5 DP2 1X.XX (connect to DP COM to turn on) 6 DP3 1.XXX (connect to DP COM to turn on) 7 INPUT(+) Positive input signal 8 INPUT(-) Negative input signal (see Technical Note 1) 9 NC No connection required 10 HOLD Hold last display (see Technical Note 2) Specifications Display Digits 3½ (±1999 count) Type 7-segment LCD Digit Height .39in (10mm) Polarity Indication Automatic - for neg input Decimal Point 3 position selectable Overrange Indication 1--- for positive, -1--- for negative Other Features/Options Display hold function Signal Inputs Configuration Bipolar, differential Full-Scale Input ±200mV, ±2V, ±20V Input Offset Adjustment Auto zero Input Impedance 10MΩ (±200mV), 1MΩ (other ranges) Common Mode Range ±1VDC Common Mode Rejection >86dB Overrange Protection ±350VDC (±100 VDC for 200mV range) Input Bias Current 1pA typical, 100pA max Control Inputs Decimal point select, hold function Performance Sampling Rate 3.3 readings/s inches (mm) Accuracy ±(0.1% + 2 counts) typ, ±(0.2% + 2 counts) max Warmup, typical 10 min Temperature Drift, typical 100 ppm/°C Power Supply Requirements Supply Voltage +5VDC ±5% Supply Current, typical 3mA Physical Package Style Snap-in bezel mount Dimensions 2.30 x 1.10 x .71 Panel Cutout 2.22 x 1.04 Weight 0.7oz (20g) Connector C-10 (10-pin) optional Bezel Snap-in bezel included Environmental Requirements Operating Temperature 0 to 50°C Storage Temperature -10 to 60°C Relative Humidity 0 to 95% non-condensing 7 ACCULEX • 1-888-472-6676 • Fax 1-888-210-0119 • acculex.com