DAC7678_10 Datasheet, PDF (10/52 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
SBAS493A – FEBRUARY 2010 – REVISED AUGUST 2010
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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
POWER SUPPLY CURRENT
vs TEMPERATURE
FULL-SCALE ERROR
vs TEMPERATURE
2.20
AV_DD = 5.5 V,
2.10 Internal Reference = 2.5 V
0.20
AV_DD = 5.5 V,
0.15 Internal Reference = 2.5 V
2.00
0.10
1.90
1.80
1.70
1.60
1.50
1.40
1.30
-40 -25 -10 5
20 35 50 65 80 95 110 125
T - Temperature -°C
Figure 20.
0.05
0.00
-0.05
-0.10
-0.15
-0.20
-40 -25 -10 5
DAC A
DAC C
DAC E
DAC G
DAC B
DAC D
DAC F
DAC H
20 35 50 65 80 95 110 125
T - Temperature -°C
Figure 21.
POWER-DOWN CURRENT
vs TEMPERATURE
6.00
5.50 ^{AVDD = 5.5 V,}
Internal Reference = 2.5 V
5.00
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-40 -25 -10 5
20 35 50 65 80 95
T - Temperature -°C
Figure 22.
110 125
GAIN ERROR
vs TEMPERATURE
0.15
AV_DD = 5.5 V,
Internal Reference = 2.5 V
0.10
0.05
0.00
-0.05
-0.10
-0.15
-40 -25 -10 5
DAC A
DAC C
DAC E
DAC G
DAC B
DAC D
DAC F
DAC H
20 35 50 65 80 95 110 125
T - Temperature -°C
Figure 23.
5.00
Channel C
4.95
SOURCE CURRENT
AT POSITIVE RAIL
SINK CURRENT
AT NEGATIVE RAIL
0.60
AV_DD = 5.5 V,
Internal Reference Enabled,
0.50 DAC Loaded with 000h
Channel C
0.40
4.90
0.30
4.85
AV_DD = 5.5 V,
Internal Reference Enabled,
DAC Loaded with FFFh
4.80
0
2
4
6
8
10
I_SOURCE - mA
Figure 24.
0.20
0.10
0.00
0
1
2
3
4
5
6
7
8
9
10
I_sink - mA
Figure 25.
10
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