Datasheet

AD5122A/AD5142A Data Sheet
Rev. A | Page 16 of 32
–60
–50
–40
–30
–20
–10
0
10 100 1k 10k 100k 1M 10M
GAIN (dB)
FREQUENCY (Hz)
AD5142A (AD5122A)
0x80, (0x40)
0x40, (0x20)
0x20, (0x10)
0x10, (0x08)
0x8, (0x04)
0x4, (0x02)
0x2, (0x01)
0x1, (0x00)
0x00
10939-018
Figure 18. 10 kΩ Gain vs. Frequency and Code
–100
–90
–80
–70
–60
–50
–40
20 200 2k 20k 200k
THD + N (dB)
FREQUENCY (Hz)
10kΩ
100kΩ
V
DD
/V
SS
= ±2.5V
V
A
= 1V rms
V
B
= GND
CODE = HALF SCALE
NOISE FILTER = 22kHz
10939-019
Figure 19. 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
10939-020
Figure 20. 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
AD5142A (AD5122A)
10939-021
Figure 21. 100 kΩ Gain vs. Frequency and Code
10kΩ
100kΩ
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0.001 0.01
0.1
1
THD + N (dB)
VOLTAGE (V rms)
V
DD
/V
SS
= ±2.5V
f
IN
= 1kHz
CODE = HALF SCALE
NOISE FILTER = 22kHz
10939-022
Figure 22. 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
10939-023
Figure 23. Normalized Phase Flatness vs. Frequency, R
AB
= 100 kΩ