3 1/2 Digit LCD, Pos. Green, 5V B/L, +/- 200mV input



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, over voltage 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 to 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%.

Note: The DP-650 is also available with a process board, as the DP-670.

Large, low-cost 3 1/2 Digit Bezel Mount LCD Digital Panel Meters

  • Bezel mount using retaining clips
  • Low power: 2.5mA (+5V)
  • Low-cost, high-performance replacement for many OEM DPMs
  • Only 1" (25 mm) deep, occupies less than 2.5" X 1.1" of front panel space
  • 3 1/2 digits with high-contrast LCD
  • Optional Red or Green backlighting


  • Low-cost, high-performance replacement for many OEM DPMs
  • Optional Red or Green backlighting
  • Bezel mount using retaining clips
  • Low power: 2.5mA (+5V)
  • Space-saving design: only 1" (25 mm) deep
  • Occupies less than 2.5 X 1.1 inches of front panel space
  • 3 1/2 digits with high-contrast LCD Display
  • Backlight power is isolated from DPM power.


Pin No. Pin Name Description
1 >V+ +5V power supply
2 V- Internal Negative Supply Output
3 NC No pin
4 TST Power Supply Ground
5 COM Analog Common
6 INLO Negative input signal
7 INHI Positive input signal
8 >RFL Negative reference input
9 >RFH Positive reference input
10 >ROH Internal reference output
11 >D3 1.XXX decimal point
12 >D2 1X.XX decimal point
13 >D1 1XX.X decimal point


Width 2.54" (62.2 mm)
Height 1.03" (26.2 mm)
Depth 1.0" (26.2 mm)

Note: Cutout Width = 2.39" (60.7 mm), Height = 0.98" (24.9)


Operating Range0 to 50 u00baC
5V powered DPM+5V DC (u00b15%) at 2.5 mA
ColorGreen Positive
Digits3u00bd Digits (u00b11999 counts)
Connection13 pins, 0.025" square on 0.1" centers - pin 3 missing
Power Supply+5V DC ( u00b1 5%) at 2.5 mA
MountingBezel Mount with retaining clips
Zero AdjustmentAutomatic
PolarityAutomatic, "-" Displayed.
Storage Range-20 to 70u00baC
Temperature Coeffu00b1100 ppm per u00baC Typical
OverloadThree lower order digits blank for inputs >1999 & <-1999
Common Mode Rangeu00b11V DC
Warmup10 Minutes Typical
Rangesu00b1200.0mV, u00b12.000V, u00b120.00V DC
Common Mode Rejection>86dB
Protectionu00b1350V DC, (u00b1100V DC on 200mV range)
Type0.5" (12mm) high-contrast reflective LCD
Order Info3u00bd digit LCD, Pos. Green, 5V B/L, u00b1200mV input
ConfigurationBipolar & Differential
Normal Mode Rejection>30 db @ 60 Hz
Impedance>10M?, (>1M? on 20V range)
Decimal Points3 Position, User Selectable
Inputu00b1 200mV
Conversion Rate2.5 per second
Optional Backlight+5V DC at 100 mA
HoldAvailable OEM option, contact factory
Accuracyu00b1(0.1% +1 count) typ u00b1(0.1% +2 counts) max

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