Datasheet

CURRENT – mA
0.150000
0.075000
0.000000
–0.5 0.5–0.4
V
OUT
– V
–0.3 –0.2 –0.1 0.0 0.1 0.2 0.3 0.4
0.125000
0.100000
0.050000
0.025000
SINK CURRENT
SOURCE CURRENT
V
DD
= 5.5V
V
DD
= 3V
MAIN DAC = ZERO SCALE
SUB DAC = MID SCALE
V
BIAS
= V
DD
/2
T
A
= +258C
Figure 29. Sink and Source Current with Zero Scale
Loaded to DAC. V
DD
= 5 V and V
DD
= 3 V
5.200000
5.140000
5.100000
–6.0 6.0
V
OUT
– V
–4.0 –2.0 0.0 2.0 4.0
5.180000
5.160000
5.120000
SINK CURRENTSOURCE CURRENT
R
L
=
R
L
= 2kV
CURRENT – mA
V
DD
= 5.5V
MAIN DAC = FULL SCALE
SUB DAC = MID SCALE
V
BIAS
= V
DD
/2
T
A
= +258C
Figure 30. Sink and Source Current at Full Scale with
V
DD
= 5 V
2.850000
2.790000
2.750000
–6.0 6.0
V
OUT
– V
–4.0 –2.0 0.0 2.0 4.0
2.830000
2.810000
2.770000
SINK CURRENTSOURCE CURRENT
R
L
=
R
L
= 2kV
CURRENT – mA
V
DD
= 3V
MAIN DAC = FULL SCALE
SUB DAC = MID SCALE
V
BIAS
= V
DD
/2
T
A
= +258C
Figure 31. Sink and Source Current at Full Scale with
V
DD
= 3 V
2.0
1.0
0.0
–1.0
–2.0
0 100 200 300 400 500 600 700 800 900 1023
DAC CODE
INTEGRAL LINEARITY – LSBs
1.5
0.5
–0.5
–1.5
AV
DD
= DV
DD
= 5V
V
BIAS
= V
DD
/2
T
A
= +258C
SUB DAC LOADED WITH
1/2 SCALE
Figure 32. Integral Linearity with 5 V Operation
2.0
1.0
0.0
–1.0
–2.0
0 100 200 300 400 500 600 700 800 900 1023
DAC CODE
INTEGRAL LINEARITY – LSBs
1.5
0.5
–0.5
–1.5
AV
DD
= DV
DD
= 3V
V
BIAS
= V
DD
/2
T
A
= +258C
SUB DAC LOADED WITH
1/2 SCALE
Figure 33. Integral Linearity with 3 V Operation
1.225
1.216
0 200
DAC OUTPUT
40 80 120 160
1.224
ns
1.223
1.222
1.221
1.220
1.219
1.218
1.217
18020 60 100 140
V
DD
= 3V
R
L
= 2kV||100pF
CODE CHANGE
011111 1111 TO
100000 0000
T
A
= +258C
Figure 34. Digital-to-Analog Glitch Impulse
Typical Performance Characteristics–AD7804/AD7805/AD7808/AD7809
REV. A
–21–