DAC121C08XEB/NOPB National Semiconductor, DAC121C08XEB/NOPB Datasheet - Page 3

• Manufacturer Part Number: DAC121C08XEB/NOPB
• Description: BOARD EVAL FOR DAC121C081/5
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of DAC121C08XEB/NOPB

• Number Of Dac's: 1
• Number Of Bits: 12
• Outputs And Type: 1, Single Ended
• Data Interface: Serial
• Settling Time: 6µs
• Dac Type: Voltage
• Voltage Supply Source: Single
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: DAC121C081/5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DAC121C08XEB

1.0 Introduction
The DAC121C08XEB Design Kit (consisting of the
DAC Evaluation Board and this User's Guide) is
designed
design-in
DAC121C081/DAC121C085 family of
Analog Converters (DACs).
DACs feature Rail-to-Rail Output and an I
Compatible interface. This User’s Guide supports
all three resolutions of the DAC family.
evaluation board comes with the full-featured
MSOP-8 version of the DAC.
resolution, the DAC121C085 is used. For the 10-
bit resolution, the DAC101C085 is used. For the
8-bit resolution, the DAC081C085 is used. All the
devices
DAC101C085, and DAC081C085) will be referred
to as the DAC121C085 in this document.
The evaluation board can be used in either of two
modes. In the Stand-Alone mode, suitable test
equipment, such as a pattern generator and signal
analyzer, can be used with the board to evaluate
the DAC121C085 performance.
Connector
WV4 Connector
WV4S
3P3V Select
J1
JP10
J3
in
of
to
the
National
ease
family
Add Select
Figure 1: Component and Test Point Locations
evaluation
The Micro-Power
JP5
Semiconductor’s
(DAC121C085,
For the 12-bit
Digital-to-
DAC121C085
The
and
2
U1
C-
Output Load
3
JP4
In the Computer mode, data capture and
evaluation is simplified by connecting this board to
National Semiconductor’s Data Capture Board
(order number WAVEVSN BRD 4.4). The Data
Capture (WV4) Board is connected to a personal
computer running WaveVision software through a
USB port. The WaveVision4 software runs on
Microsoft Windows, and the latest version can be
downloaded
http://www.national.com/adc.
Note: WaveVision Software version 4.4 or later is
required to evaluate this part with the WV4
Evaluation System.
The WaveVision software allows the user to drive
the DAC121C085 with a variety of preset
waveforms and custom waveforms. The software
also allows the user to configure the I
Interface.
Data transmitted to the DAC121C085, via the
I
by U1, the DAC121C085.
2
C interface, is converted to an analog waveform
V
J4
OUT
from
http://www.national.com
the
V
REF
V
web
JP7
V
A
Select
A
JP9
Select
2
J2
Input
C serial
at