DAC7678_14 Datasheet, PDF (9/53 Pages) Texas Instruments – 12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface Digital-to-Analog Converter with 2.5V Internal Reference

DAC7678
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SBAS493A – FEBRUARY 2010 – REVISED AUGUST 2010
TYPICAL CHARACTERISTICS: DAC at AV_DD = 5.5 V (continued)
At T_A = 25°C, external reference used, DAC output not loaded, and all DAC codes in straight binary data format, unless
otherwise noted
LINEARITY ERROR
vs DIGITAL INPUT CODE (+125°C)
DIFFERENTIAL LINEARITY ERROR
vs DIGITAL INPUT CODE (+125°C)
1.00
AV_DD = 5.5 V,
0.80 _{Internal Reference = 2.5 V,}
Typical Channel Shown
0.60
0.25
AV_DD = 5.5 V,
0.20 _{Internal Reference = 2.5 V,}
Typical Channel Shown
0.15
0.40
0.10
0.20
0.05
0.00
0.00
-0.20
-0.05
-0.40
-0.10
-0.60
-0.15
-0.80
-0.20
-1.00
0
512 1024 1536 2048 2560 3072 3584 4096
Digital Input Code
Figure 14.
-0.25
0
512 1024 1536 2048 2560 3072 3584 4096
Digital Input Code
Figure 15.
LINEARITY ERROR
vs TEMPERATURE
1.00
0.80
AV_DD = 5.5 V,
Internal Reference = 2.5 V
0.60
0.40
INL MAX
0.20
0.00
-0.20
INL MIN
-0.40
-0.60
-0.80
-1.00
-40 -25
-10 5
20 35 50 65
T - Temperature -°C
Figure 16.
80 95 110 125
DIFFERENTIAL LINEARITY ERROR
vs TEMPERATURE
0.25
0.20 ^{AVDD = 5.5 V,}
Internal Reference = 2.5 V
0.15
0.10
DNL MAX
0.05
0.00
-0.05
DNL MIN
-0.10
-0.15
-0.20
-0.25
-40 -25 -10 5 20 35 50 65 80 95 110 125
T - Temperature -°C
Figure 17.
POWER SUPPLY CURRENT
vs TEMPERATURE
1.40
AV_DD = 5.5 V,
External Reference = 5 V
1.30
1.20
1.10
1.00
0.90
0.80
-40 -25 -10 5
20 35 50 65 80 95 110 125
T - Temperature -°C
Figure 18.
OFFSET ERROR
vs TEMPERATURE
4
AV_DD = 5.5 V,
3 _{Internal Reference = 2.5 V}
2
1
0
-1
-2
-3
-4
-40 -25 -10 5
Ch A
Ch C
Ch E
Ch G
Ch B
Ch D
Ch F
Ch H
20 35 50 65 80 95 110 125
T - Temperature -°C
Figure 19.
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