DAC8415
16-Channel 18-Bit DAC
IndustryPack®
The Newwood Solutions IP-DAC-8415 is a single-width Industry Pack® that provides 16 channels of simultaneously updated digital to analogue conversion with the following characteristics:-
• 16 independently programmed channels
• 18 bits resolution – 18 bits monotonic.
• On board RAM Memory 1Meg x 16 bits (64K samples for 16bits) (32K samples for 18bits).
• Programmable full scale output range +/-10V *,+/-5V, 0 to 10V and 0 to 5V
• +/- 10mA current drive capability with continuous short-circuit protection
• Drives capacitive loads to 10000pF
• Straight binary or Two Complement input code
• Internal/External update clock rates
• Internal update clock rates programmable (50KHz,20KHz,10KHz,5KHz,2KHz,1KHz,500Hz,200Hz,100Hz,50Hz,20Hz,10Hz,5Hz,2Hz and 1Hz)
• Maximum 64KHz external clock rate
• On-board calibration by FPGA firmware using stored offset and gain data.
• Simultaneous up-date Power-on disable (outputs set to 0V on boot up)
• System to plant isolation to 100V when externally powered
• Board type, Board serial number, PCB issue and firmware version held on ROM.
• External Triggering
• Continuous function generation.
• Multi Trigger Mode.
• Repeat Multi Trigger Mode.
• Field upgradeable firmware (requires Xilinx/compatible device to program built in FPGA flash memory via the FPGA JTAG port).
* The units are factory set to have an output range of +/-10V on power up.
Size: Single width Industry Pack 1.8ins x 3.9 ins
Operating temp: 0 to 45 deg C ambient
Number of channels: 16
DAC resolution: 18 bits
Data format +/-10V: 18 bits straight binary Code format 20h = –10v, 20000h = 0V and 3FFE0h = +10V.
Data format +/-5V: 18 bits straight binary Code format 40h = –5v, 20000h = 0V and 3FFC0h = +5V.
Data format 0-10V: 18 bits straight binary Code format 0000h = 0V and 3FFC0h = +10V.
Data format 0-5V: 18 bits straight binary Code format 0000h = 0V and 3FFC0h = +5V.
Output current: +/-10mA @ FS
Capacitive load: Stable up to 10000pF
Short circuit duration: Continuous
OverV withstand: No internal protection from external voltages provided
Update rate: 64KHz max
Power quiescent:
+5V @ 350mA typical
+12V @ 150mA typical
-12V @ 100mA typical
Isolation: 100V via opto-isolators (if externally powered by NWS 8912)
DAC device: Texas Instruments DAC9881SB with serial interface
Output slew rate: 1.6V/us typ.
Integral non-linearity: +/-1LSBs typ. +/-2LSBs max
Offset error: +/- 32LSBs without calibration (+/-2LSBs after firmware calibration) at 25 deg C ambient. (Guaranteed for +/-10V range only).
Offset drift: +/-0.8 ppm per deg C typical
Gain error: +/- 32LSBs without calibration (+/-2LSBs after firmware calibration) at 25 deg C ambient. (Guaranteed for +/-10V range only).
Gain drift: +/-10V range +/-2 ppm per deg C typical
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