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Linear Technology LTC1592 Quick Start Manual

Demonstration circuit 572 16-bit softspan dac
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QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 572
DESCRIPTION
Demonstration circuit 572 features the LTC1592, a
16-bit current output DAC with five software-
selectable output ranges.
DC572 is a member of Linear Technology's
QuickEval™ family of demonstration boards. It is de-
signed to allow easy evaluation of the LTC1592 and
may be connected directly to the target application's
analog signals while using the DC590 USB Serial
Controller board and supplied software to measure
performance. The exposed ground planes allow
proper grounding to prototype circuitry. After evaluat-
ing with Linear Technology's software, the digital sig-
nals can be connected to the end application's proc-
essor / controller for development of the serial inter-
face.
Design files for this circuit board are available. Call
the LTC factory.
16-BIT SOFTSPAN DAC
LTC1592
1

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Summary of Contents for Linear Technology LTC1592

  • Page 1 / controller for development of the serial inter- QuickEval™ family of demonstration boards. It is de- face. signed to allow easy evaluation of the LTC1592 and may be connected directly to the target application’s Design files for this circuit board are available. Call the LTC factory.

  • Page 2: Quick Start Procedure

    The correct program will be power connections on DC572. This must be done loaded automatically. first because the +5V supply to the LTC1592 is de- By default, the control program will load a DC value rived from the +15V supply. Connect DC572 to a into the LTC1592.

  • Page 3: Hardware Setup

    JP2 – Select normal or triggered mode. In normal mode, the LTC1592 is updated as fast as the con- REFERENCE CONNECTIONS troller can, which is dependant on the speed of the PC.

  • Page 4: Output Voltage

    For instance, in the –2.5 to 7.5V range a certain LTC1592 produces – OFFSET ERROR 2.50004V at zero code and +7.50009 at maximum Offset error is the output voltage when the digital code, the gain error is 0.00009V –...

  • Page 5: Settling Time

    QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 572 16-BIT SOFTSPAN DAC SETTLING TIME To measure settling of the LTC1592, connect the swings it may be useful to trigger on the CS/LD tur- output BNC to an oscilloscope input with a barrel ret.
  • Page 6 DAC switches are changing state while the This test is best performed by connecting the out- output is changing by 1 LSB. The LTC1592 has an put BNC connector directly to the oscilloscope input internal deglitcher that reduces the midscale glitch with a barrel connector.
  • Page 7 QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 572 16-BIT SOFTSPAN DAC...

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