Datasheet

Data Sheet AD5123/AD5143
Rev. A | Page 15 of 28
–60
–50
–40
–30
–20
–10
0
10 100 1k 10k 100k 1M 10M
GAIN (dB)
FREQUENCY (Hz)
AD5143 (AD5123)
0x80 (0x40)
0x40 (0x20)
0x20 (0x10)
0x10 (0x08)
0x8 (0x04)
0x4 (0x02)
0x2 (0x01)
0x1 (0x00)
0x00
10878-017
Figure 17. 10 kΩ Gain vs. Frequency and Code
–100
–90
–8
0
–7
0
–60
–50
–4
0
20 200 2k 20
k 200k
THD + N
(dB)
FREQU
ENCY
(Hz)
10kΩ
100kΩ
V
DD
/V
SS
= ±2.5V
V
A
= 1V rms
V
B
= GND
CODE = HALF SCALE
NOISE FILTER = 22kHz
10878-018
Figure 18. 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
10878-019
Figure 19. 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
AD5143 (AD5123)
10878-020
Figure 20. 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
10878-021
Figure 21. 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
10878-022
Figure 22. Normalized Phase Flatness vs. Frequency, R
AB
= 100 kΩ