Datasheet

REV. A
–7–
Typical Performance Characteristics — DAC8512
5
2
0
10
100 100k10k1k
1
3
4
LOAD RESISTANCE – V
OUTPUT VOLTAGE – Volts
RL TIED TO AGND
D = FFFH
R
L
TIED TO AGND
DATA = FFF
H
V
DD
= +5V
T
A
= +25 8 C
R
L
TIED TO +5V
DATA = 000H
Figure 5. Output Swing vs. Load
TIME = 2ms/DIV
OUTPUT NOISE VOLTAGE – 500µV/DIV
10
90
100
0%
SCALE = 100X
CODE = FFF
H
= 4095
10
BW = 630kHz
T
A
= +25 8 C
2mS
50mV
Figure 8. Broadband Noise
0.01 0.1 101.0
5.0
4.8
4.0
4.6
4.4
4.2
0.04 0.4 4.0
OUTPUT LOAD CURRENT – mA
V
DD
MIN – Volts
∆VFS ≤ 1 LSB
DATA = FFF
H
T
A
= +25 8 C
PROPER OPERATION
WHEN V
DD
SUPPLY
VOLTAGE ABOVE
CURVE
Figure 11. Minimum Supply Voltage
vs. Load
1
10 1000100
100
1
0.01
0.1
10
OUTPUT SINK CURRENT – mA
OUTPUT PULL-DOWN VOLTAGE – mV
V
DD
= +5V
DATA = 000
H
T
A
= +85 8 C
T
A
= –40 8 C
T
A
= +25 8 C
Figure 6. Pull-Down Voltage vs. Out-
put Sink Current Capability
4.0
0.0
5
0.8
0
2.4
1.6
3.2
3241
LOGIC VOLTAGE VALUE – Volts
SUPPLY CURRENT – mA
V
DD
= +5V
T
A
= +25 8 C
NO LOAD
Figure 9. Supply Current vs. Logic
Input Voltage
2.028
2.018
2.048
2.038
0
5
TIME – 200ns/DIV
V
OUT
– Volts
LD
2048
10
TO 2047
10
V
DD
= 5V
T
A
= +258C
Figure 12. Midscale DAC Glitch
Performance
80
–100
–60
–80
1
–20
–40
0
20
40
60
32
OUTPUT VOLTAGE – Volts
OUTPUT CURRENT – mA
POS0
CURRENT0
LIMIT0
NEG
CURRENT
LIMIT
DATA = 800
H
R
L
TIED TO +2V
Figure 7. Short Circuit Current
100
0
10
100 100k10k1k
60
80
20
40
POWER SUPPLY REJECTION – dB
FREQUENCY – Hz
V
DD
= +5V 6200mV AC
T
A
= +25 8 C
DATA = FFF
H
Figure 10. Power Supply Rejection
vs. Frequency
10
90
100
0%
TIME = 20µs/DIV
20µs
1V
R
L
= NO LOAD
C
L
= 110pF
T
A
= +25 8 C
1V/DIV
Figure 13. Large Signal Settling Time