Datasheet

Data Sheet ADAS1000-3/ADAS1000-4
Rev. A | Page 23 of 76
Figure 47. FFT with 60 Hz Input Signal
Figure 48. SNR and THD Across Gain Settings
Figure 49. Power Up AVDD Line to
DRDY
Going Low (Ready)
Figure 50. Open-Loop Gain Response of Right Leg Drive Amplifier Without
Loading
Figure 51. Open-Loop Phase Response of Right Leg Drive Amplifier Without
Loading
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
0 50 100 150 200 250 300 350 400 450 500
AMPLITUDE (dBFS)
FREQUENCY (Hz)
AVDD = 3.3V
GAIN 0
DATA RATE = 2kHz
FILTER SETTING = 150Hz
10997-077
–100
–50
0
50
100
150
GAIN 0 GAIN 1
GAIN 2
GAIN 3
AMPLITUDE (dB)
GAIN SETTING
SNR
THD
AVDD = 3.3V
–0.5dBFS
10Hz INPUT SIGNAL
10997-078
CH1 2.00V M1.00ms A CH1 2.48V
T 22.1%
CH2 1.00V
2
1
DRDY
AVDD = 3.3V
AVDD
10997-079
10997-080
1
2
0
LOO
P GAIN (dB)
100
80
6
0
40
20
0
–20
–40
–60
–80
FREQUENCY (Hz)
100m 1 10 100 1k 1G10k 100k 1M 10M 100M
10997-081
0
LO
O
P GAIN (Phase)
–350
–300
–25
0
–20
0
–150
–10
0
–50
FREQUENCY (Hz)
100m 1 10 100 1k 1G10k 100k 1M 10M 100M