Boards Home > ISA Bus Data Acquisition Boards-A-626/A-628
6 & 8-channel 12-bit analog output board
» Features
■ 6 or 8 analog output channels
■ 12-bit resolution
■ 0~5V, 0~10V, ±5V, ±10V output ranges
■ 4-20 mA current loop capability, sink to ground
■ On-board reference -5V, -10V
■ External reference ±10V (max.) AC or DC
■ IRQ level from IRQ 3-IRQ 15
■ 16-channel digital input and 16-channel digital output
» Functional Description
The A-626 and A-628 are 12-bit analog output boards with 16-channel digital input and 16-channel digital output.
The A-626 and A-628 boards support both current and voltage output.
The output channels can be jumper-selectable for different voltage range ±10V, ±5V, 0~5V, 0~10V. It can also sink 4~20 mA current loop when connected to an external voltage source.
On-board BB Ref- 01 chip is used for solving the thermo-drifting problem of the reference voltage.
A-626 is much better than other products on the market for long period operation.
On-board lattice FPGA increases the stability.
» Applications
● Servo control
● Programmable voltage source
● Programmable current sink
● Product testing
» Specifications Analog Output
● Number of channels : 6 (A-626); 8(A-628)
● Resolution : 12-bit
● Type : AD 7541 or equivalent
● Differential linearity : ±1/2 LSB max over temperature
● Settling time : less than 65μs
● Temperature drift : 5ppm / °C max
● Relative accuracy : ± 1 LSB max
● Voltage output range : 0~5V, 0~10V, ±5V, ±10V
● Output driving capability : 5 mA max
● Current output range : 4~20 mA
● Current loop exciting voltage : 8V ~ 35V
● Reference voltage : Internal -5V or -10V
External +10V or -10V max
● 16 TTL-level input
● Input low VIL = 0.8 Vmax; IIL =-0.4 mA max
● Input high VIH = 2.0 Vmin; IIH = 20μA max
● 16 TTL-level Output
● Output low VOL = 0.5 Vmax; @IOL = 8 mA max
● Output high VOH = 2.7 Vmin; @IOH= -400μA max
» General Specifications
● I/O connector : one of 37-pin D-Sub female
two of 20-pin ribbon male
● Power requirements :
Power
TypicalA-626/A-628
MaximalA-626/A-628
+5V
450/500 mA
900/1100 mA
+12V
50/60 mA
110/130 mA
-12V
14/15 mA
90/105 mA
● Operating temperature : 0°C ~ 60°C
● Operating humidity : 0% ~ 90 % non-condensing
● Storage temperature : -20°C ~ 70°C
● Dimensions : 184 mm x 123 mm (A-626); 198 mm x 123 mm (A-628)
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PIN View
