Reflex DAC - 14 Bit 2MSPS +/- 10V Range

Reflex DAC product features:
--> Real ± output — Op amp bipolar summing stage provides –10 V to +10 V full-scale voltage output

--> Fast without the fuss — 2 MSPS with standard SPI. In controlled setups, you can over clock it toward ~3 MSPS with reduced amplitude output swing

--> Great analog voltage accuracy — On-board precision 10 V reference, low-noise analog path, and power noise filtering for rock-solid, low-drift output.

--> Single-supply simplicity — Runs from one 5 V supply; the board generates the higher voltage positive and negative rails internally for the bipolar output and filters supply noise before it touches your analog signal.

--> Flexible digital I/O — digital circuit power auto-selects: use the main 5 V, or plug in an optional 2.7–5.0 V digital supply and it routes itself—no jumpers to remember.

--> Design includes shorting pad at the output if you want to terminate the output at 1 Mohms (connects 1Mohm resistor between the output and ground)

--> The Reflex DAC includes some analog signal reconstruction filtering on the signal's output path (C24 and C25), pop these caps off to get the full slew rate speed of the DAC or increase their value (150pF for instance) to get smoother analog transitions between points (see tutorial for more details)

--> Open-source everything — Schematics, PCB, and example Arduino firmware so you can learn, adapt, and ship.

General performance specifications:
--> Resolution / topo: 14-bit monotonic
--> Full-scale range (FSR): ±10 V (span = 20V)
--> Max specified DAC update rate: up to 2 MSPS
--> SPI interface: 3-wire, up to 50 MHz SCLK (device-rated maximum).
--> SPI interface only requires three pins: SCK, COPI, and CS. No data is read from the DAC so no CIPO connection

Reflex DAC turn on behavior:
--> At turn on the DAC defaults to a code of 0 which results in a max negative voltage value, with on board reference this would be -10V
--> If you want it to power on at 0V, pull the PWR DIS pin high at turn on. Then adjust the DAC code to mid scale (0V) and then remove the high logic from the PWR DIS pin.
--> Note that the PWR DIS pin uses a pull down resistors so it does not need to actively be pulled low

Accuracy @ 25 °C (typical): ±(0.15% of reading + 1.0 LSB)

Accuracy @ 25 °C after two-point calibration (zero + gain ±(0.01% of reading + 1.0 LSB)
--> See tutorial section for more information on Two-Point Calibration method for DACs

Drive capability & loading capability of output amplifier:
--> Max output current (source/sink): ±75 mA class (typical);
--> Recommended use at ≤ ±50 mA for lowest error and best op amp performance

Reference options:
--> On-board precision 10V reference: Serves as reference to DAC and also used to bias op amp stage to create -10 voltage output range
--> Internal reference can be used externally but limit current draw to no more than 5mA

Power & logic:
--> Power in (Vin): single +5 V input, with max current draw of xxxmA. If you use less than 4.8V for Vin, output voltage range of DAC may drop in voltage
--> Digital power: auto-detects whether to use Vin or if separate digital power input (VDIG) is present. Digital voltage input 2.7–5.0 V, max current 5mA
--> Note digital input voltage sets the digital logic level of the SPI communication

Form factor (see tutorial section for pin descriptions):
--> Dimensions: 44.5 mm x 34 mm
--> Mounting holes: 3.5 mm diameter
--> Pin headers: 2.54 mm spacing

5% discount for quantities of 10 or above, automatically applied at checkout. Contact Anabit for bulk pricing on quantities of 50 or more.