AT5510
Preliminary Product Information
120mA, Current Sinking,
10-bit I
2
C DAC for VCM Driver
Terminology
Resolution
Resolution of DAC is the number of bits to present the analog output signal.
Integral nonlinearity (INL)
Integral nonlinearity is a measurement of the maximum deviation, in LSB, from a straight line
passing through the endpoints of the DAC transfer function. A typical INL vs. code plot is shown in
Figure 3.
Differential nonlinearity (DNL)
Differential nonlinearity is the difference between the measured and ideal 1 LSB change by any
two adjacent code. A typical DNL vs. code plot is shown in Figure 4.
Zero-code error
Zero-code error is a measurement of the output error when zero code (0x0000) is loaded to the
DAC register. The zero-code error is positive in AT5510.
Gain error
Gain error is a measurement of the span error of the DAC. It is the deviation in slope of the DAC
transfer characteristic from the ideal, expressed as percent of the full-scale range.
Offset error
Offset error is a measurement of the difference between actual output current (I
SINK
) and ideal
output current (Io). It is measured on the AT5510 with Code 16 loaded into the DAC register.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
WWW:
http://www.aimtron.com.tw
9/20/2007 REV:0.2
Email:
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7
AIMTRON [ AIMTRON TECHNOLOGY ]
