Datasheet

Data Sheet AD7176-2
Rev. A | Page 13 of 68
Figure 17. 1 kHz Input Tone, −0.5 dBFS Input FFT (AVDD1 = 5 V, AVDD2 = 5 V,
IOVDD = 3.3 V, V
REF
= 2.5 V, Output Data Rate = 250 kSPS)
Figure 18. 1 kHz Input Tone, −6 dBFS Input FFT (AVDD1 = 5 V, AVDD2 = 5 V,
IOVDD = 3.3 V, V
REF
= 2.5 V, Output Data Rate = 250 kSPS)
Figure 19. Internal Reference Settling Time (Extended)
(AVDD1 = 5 V, AVDD2 = 5 V, IOVDD = 3.3 V)
Figure 20. Common-Mode Rejection Ratio (10 Hz to 70 Hz)
(AVDD1 = 5 V, AVDD2 = 5 V, IOVDD = 3.3 V, 20 SPS Enhanced Filter)
Figure 21. Internal Reference Settling Time
(AVDD1 = 5 V, AVDD2 = 5 V, IOVDD = 3.3 V)
Figure 22. Common-Mode Rejection Ratio vs. Frequency
(AVDD1 = 5 V, AVDD2 = 5 V, IOVDD = 3.3 V, Output Data Rate = 250 kSPS)
0
–160
0 100k 120k20k 40k 60k 80k
AMPLITUDE (dB)
FREQUENCY (Hz)
–140
–120
–100
–80
–60
–40
–20
11037-023
0
–160
0 100k 120k20k 40k 60k 80k
AMPLITUDE (dB)
FREQUENCY (Hz)
–140
–120
–100
–80
–60
–40
–20
11037-026
0.10
0.05
0
–0.05
–0.10
0 10 20 30 40 50
ERROR (%)
TIME (Seconds)
11037-030
0
–160
10 70
CMRR (dB)
FREQUENCY (Hz)
–140
–120
–100
–80
–60
–40
–20
20
30 40
50 60
1
1037-031
1.0
0.5
0
–0.5
–1.0
0.00001 0.10.010.0010.0001
ERROR (%)
TIME (Seconds)
FROM STANDBY – REFERENCE OFF
FROM POWER-DOWN
11037-032
0
–20
–40
–60
–80
–100
–120
1 10 100 1k 10k 100k 1M
CMRR (dB)
FREQUENCY (Hz)
11037-033