Datasheet

ADS8324
4
SBAS172A
www.ti.com
TYPICAL CHARACTERISTICS
At T
A
= +25°C, V
CC
= 1.8V, V
REF
= 0.9V, f
SAMPLE
= 50kHz, f
CLK
= 24 • f
SAMPLE
, unless otherwise specified.
FREQUENCY SPECTRUM
(4096 point FFT, f
IN
= 0.989kHz, –0.2dB)
0
–20
–40
–60
–80
–100
–120
–140
Amplitude (dB)
0252015105
Frequency (kHz)
FREQUENCY SPECTRUM
(4096 point FFT, f
IN
= 9.998kHz, –0.2dB)
0
–20
–40
–60
–80
–100
–120
–140
Amplitude (dB)
0252015105
Frequency (kHz)
FREQUENCY SPECTRUM
(4096 point FFT, f
IN
= 20.001kHz, –0.2dB)
0
–20
–40
–60
–80
–100
–120
–140
Amplitude (dB)
0252015105
Frequency (kHz)
SIGNAL-TO-NOISE RATIO AND
SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY
90
85
80
75
70
65
60
SNR and SINAD (dB)
110010
SNR
SINAD
Frequency (kHz)
SIGNAL-TO-NOISE RATIO AND
TOTAL HARMONIC DISTORTION
vs INPUT FREQUENCY
100
95
90
85
80
75
70
65
60
SFDR (dB)
–100
–95
–90
–85
–80
–75
–70
–65
–60
THD (dB)
110010
Frequency (kHz)
SFDR
THD
(1)
NOTE: (1) First nine harmonics
of the input frequency.
COMMON-MODE REJECTION vs FREQUENCY
80
75
70
65
60
55
50
45
40
CMRR (dB)
100 1M10k 100k1k
Frequency (kHz)
V
CM
= 400mVp-p sinewave centered around V
REF