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%.
F e a t u r e s
• Convenient snap-in bezel package
• Very low power consumption (5VDC @ 3mA)
• Differential input, 3 voltage ranges
• 0.1% typical accuracy
• User-selectable decimal point
• Hold-display function
• Overvoltage protection
• Quantity discounts
T e c h n i c a l
N o t e s
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
either directly or through a 10K resistor network as shown to reduce common mode errors.
2. Display holds reading when HOLD is high (+5V). Readings are updated when HOLD is low
or floating.
3. The decimal point is user selectable by connecting the decimal point pins (4, 5, or 6) to DP
COM (pin 3).
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.
5. Unused pins should be left open.
A p p l i c a t i o n s
• Portable/mobile equipment
• Medical instruments
• Avionics/aerospace systems
• Office equipment
Model
DP-650
DP-652
DP-654
APS-5
C-10
O r d e r i n g
Description
I n f o r m a t i o n
Miniature DPM LCD ±200mV
Miniature DPM LCD ±2V
Miniature DPM LCD ±20V
120V AC to 5V DC Power Supply
Connector - 10 pin
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ACCULEX
•
1-888-472-6676
•
Fax 1-888-210-0119
•
acculex.com
DP-650 Series
D i m e n s i o n s
Pin No.
1
2
3
4
5
6
7
8
9
10
C o n n e c t i o n s
Pin Name
V+
GND
DP COM
DP1
DP2
DP3
INPUT(+)
INPUT(-)
NC
HOLD
Description
+5V power supply
Power supply ground
Decimal point return
1XX.X (connect to DP COM to turn on)
1X.XX (connect to DP COM to turn on)
1.XXX (connect to DP COM to turn on)
Positive input signal
Negative input signal (see Technical Note 1)
No connection required
Hold last display (see Technical Note 2)
S p e c i f i c a t i o n s
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
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
Display
inches (mm)
ACCULEX
•
1-888-472-6676
•
Fax 1-888-210-0119
•
acculex.com
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