Datasheet

AD7788/AD7789
Rev. B | Page 10 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
03539-007
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0408020 60 100 120 140
dB
160
0
FREQUENCY (Hz)
Figure 6. Frequency Response with 16.6 Hz Update Rate
03539-008
0
10
20
30
40
50
60
70
8388591
OCCURENCE
8388625
CODE
V
DD
= 3V
V
REF
= 2.048V
T
A
= 25°C
RMS NOISE = 1.25µV
Figure 7. AD7789 Noise Histogram
03539-009
8388591
0 200 400 600 800
CODE
1000
8388625
READ NO.
V
DD
= 3V, V
REF
= 2.048V,
T
A
= 25°C, RMS NOISE = 1.25µV
Figure 8. AD7789 Noise Plot
03539-013
0
0.5
1.0
1.5
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
RMS NOISE (µV)
5.0
3.0
2.5
2.0
V
REF
(V)
V
DD
= 5V
UPDATE RATE = 16.6Hz
T
A
= 25°C
Figure 9. AD7788/AD7789 Noise vs. V
REF