max5133beee Maxim Integrated Products, Inc., max5133beee Datasheet - Page 15

• Manufacturer Part Number: max5133beee
• Description: 5v/3v, 13-bit, Serial, Force/sense Dacs With 10ppm/ ? Internal Reference
• Manufacturer: Maxim Integrated Products, Inc.

Gain error (Figure 8d) is the difference between the
ideal and the actual full-scale output voltage on the
transfer curve, after nullifying the offset error. This error
alters the slope of the transfer function and corre-
sponds to the same percentage error in each step.
The settling time is the amount of time required from the
start of a transition until the DAC output settles to its new
output value within the converter’s specified accuracy.
Digital feedthrough is noise generated on the DAC’s
output when any digital input transitions. Proper board
layout and grounding will significantly reduce this
noise, but there will always be some feedthrough
caused by the DAC itself.
Figure 8a. Integral Nonlinearity
Figure 8b. Differential Nonlinearity
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
7
6
5
4
3
2
1
0
6
5
4
3
2
1
0
000
000
+5V/+3V, 13-Bit, Serial, Force/Sense DACs
001
001
______________________________________________________________________________________
010
DIGITAL INPUT CODE
DIGITAL INPUT CODE
AT STEP
001 (1/4 LSB )
010
011
1 LSB
011
100
DIFFERENTIAL
LINEARITY ERROR (+1/4 LSB)
AT STEP
011 (1/2 LSB )
DIFFERENTIAL LINEARITY
ERROR (-1/4 LSB)
100
101
with 10ppm/°C Inter nal Reference
Digital Feedthrough
110
101
1 LSB
111
Settling Time
Gain Error
Figure 9 shows the MAX5132/MAX5133 setup for
unipolar, Rail-to-Rail™ operation with a closed-loop
gain of 2V/V. With its internal reference of +2.5V, the
MAX5132 provides a convenient unipolar output range
of 0 to +4.99939V, while the MAX5133 offers an output
range of 0 to +2.499695V with its on-board +1.25V ref-
erence. Table 5 lists example codes for unipolar output
voltages.
The MAX5132/MAX5133 can be configured for unity-
gain bipolar operation (FB = OUT) using the circuit
shown in Figure 10. The output voltage V
given by the following equation:
Figure 8c. Offset Error
Figure 8d. Gain Error
OFFSET POINT
ACTUAL
3
2
1
0
V
7
6
5
4
0
000
OUT
000
IDEAL DIAGRAM
100
= V
IDEAL OFFSET
POINT
DIAGRAM
GAIN ERROR
ACTUAL
(-1 1/4 LSB)
REF
001
DIGITAL INPUT CODE
IDEAL FULL-SCALE OUTPUT
DIGITAL INPUT CODE
[G (NB / 8192) - 1]
101
OFFSET ERROR
(+1 1/4 LSB)
010
110
IDEAL DIAGRAM
Unipolar Output
FULL-SCALE
Bipolar Output
OUTPUT
ACTUAL
011
111
OUT
is then
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