AD7837/AD7847–Typical Performance Graphs
25
0.6
0.4
10
V
V
= +15V
DD
SS
DAC A
= –15V
0.2
20
15
0
0
–0.2
–0.4
–0.6
0.6
–10
–20
–30
V
V
V
= +15V
= –15V
DD
10
0.4
0.2
DAC B
SS
V
V
V
= +15V
DD
= +20Vp–p
REF
= –15V
0
SS
DAC CODE = 111...111
5
0
= +20Vp–p @ 1kHz
REF
–0.2
–0.4
–0.6
DAC CODE = 111...111
4
5
6
7
10
100
1k
10k
0
2048
CODE
4095
10
10
10
10
LOAD RESISTANCE – ꢁ
FREQUENCY – Hz
Figure 2. Output Voltage Swing vs.
Resistive Load
Figure 1. Frequency Response
Figure 3. DAC-to-DAC Linearity
Matching
–40
–50
0.5
400
300
0.4
0.3
0.2
0.1
0.0
V
= 7.5V
REF
V
V
V
= +15V
= –15V
DD
SS
V
V
V
= +15V
= –15V
= 0V
–60
–70
DD
SS
= 6V rms
REF
DAC CODE = 111...111
REF
200
100
0
DAC CODE = 111...111
INL
–80
–90
DNL
–100
100
0.1
1
10
0
11
13
/V – Volts
15
17
0.01
0.1
1
10
100
V
FREQUENCY – kHz
DD SS
FREQUENCY – Hz
Figure 4. Linearity vs. Power Supply
Figure 5. Noise Spectral Density vs.
Frequency
Figure 6. THD vs. Frequency
–50
A1 –0.01V
–60
–70
V
V
V
= +15V
DD
= –15V
SS
= 20V p-p
REF
DAC CODE = 000...000
FULL SCALE
–80
V
OUT
–90
ZERO SCALE
B
2ꢂs
200mV 50mV
w
L
–100
0.1
1
10
100
1000
HORIZ 2ꢂs/DIV
VERT 2V/DIV
FREQUENCY – kHz
Figure 7. Multiplying Feedthrough
Error vs. Frequency
Figure 9. Small Signal Pulse
Response
Figure 8. Large Signal Pulse
Response
–6–
REV. C
ADI [ ADI ]
