Datasheet

AD5122/AD5142 Data Sheet
Rev. 0 | Page 16 of 32
–60
–50
–40
–30
–20
–10
0
10 100 1k 10k 100k 1M 10M
GAIN (dB)
FREQUENCY (Hz)
AD5142 (AD5122)
0x80 (0x40)
0x40 (0x20)
0x20 (0x10)
0x10 (0x08)
0x8 (0x04)
0x4 (0x02)
0x2 (0x01)
0x1 (0x00)
0x00
10880-020
Figure 20. 10 kΩ Gain vs. Frequency vs. Code
–100
–90
–80
–70
–60
–50
–40
20 200 2k 20k 200k
THD + N (dB)
FREQUENCY (Hz)
10k
Ω
100kΩ
10880-021
V
DD
/V
SS
= ±2.5V
V
A
= 1V rms
V
B
= GND
CODE = HALF SCALE
NOISE FILTER = 22kHz
Figure 21. Total Harmonic Distortion Plus Noise (THD + N) vs. Frequency
–100
–80
–60
–40
–20
0
20
10 100 1k
10k
100k
1M 10M
PHASE (Degrees)
FREQUENCY (Hz)
QUARTER SCALE
MIDSCALE
FULL-SCALE
V
DD
/V
SS
= ±2.5V
R
AB
= 10kΩ
10880-022
Figure 22. Normalized Phase Flatness vs. Frequency, R
AB
= 10 kΩ
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10
GAIN (dB)
FREQUENCY
(Hz)
10 100 1k 10k 100k 1M 10M
0x80 (0x40)
0x40 (0x20)
0x20 (0x10)
0x10 (0x08)
0x8 (0x04)
0x4 (0x02)
0x2 (0x01)
0x1 (0x00)
0x00
AD5142 (AD5122)
10880-023
Figure 23. 100 kΩ Gain vs. Frequency vs. Code
10k
Ω
100k
Ω
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0.001 0.01 0.1 1
THD + N (dB)
VOLT
AGE (V rms)
V
DD
/V
SS
= ±2.5V
f
IN
= 1kHz
CODE = HALF SCALE
NOISE FILTER = 22kHz
10880-024
Figure 24. Total Harmonic Distortion Plus Noise (THD + N) vs. Amplitude
–80
–90
–70
–60
–50
–40
–30
–20
–10
0
10
10
100 1k
10k
100k
1M
PHASE (Degrees)
FREQUENCY (Hz)
QUARTER SCALE
MIDSCALE
FULL-SCALE
V
DD
/V
SS
= ±2.5V
R
AB
= 100kΩ
10880-025
Figure 25. Normalized Phase Flatness vs. Frequency, R
AB
= 100 kΩ