Datasheet

ADS8321
5
SBAS123B
www.ti.com
TYPICAL PERFORMANCE CURVES (Cont.)
At T
A
= +25°C, V
CC
= +5V, V
REF
= +2.5V, f
SAMPLE
= 100kHz, f
CLK
= 24 • f
SAMPLE
, unless otherwise specified.
MAXIMUM SAMPLE RATE vs V
CC
1000
100
10
1
Sample Rate (kHz)
12345
V
CC
(V)
SIGNAL-TO-NOISE AND SIGNAL-TO-(NOISE + DISTORTION)
vs INPUT FREQUENCY
90
85
80
75
70
65
SNR and SINAD (dB)
0.1 1 10010
Input Frequency (kHz)
SNR
SINAD
SPURIOUS FREE DYNAMIC RANGE AND
TOTAL HARMONIC DISTORTION vs INPUT FREQUENCY
90
85
80
75
70
65
SNR and SINAD (dB)
0.1 1 10010
Input Frequency (kHz)
SFDR
THD
NOISE vs REFERENCE VOLTAGE
18
16
14
12
10
8
6
4
2
0
Peak-to-Peak Noise (LSB)
0.1 1 10
Reference Voltage (V)
REFERENCE CURRENT vs SAMPLE RATE
35
30
25
20
15
10
5
0
Reference Current (µA)
0 20 40 60 80 100 120 140
Sample Rate (kHz)
2.5V
1.25V
CHANGE IN GAIN vs REFERENCE VOLTAGE
15
10
5
0
–5
–10
–15
Change in Gain (LSB)
0
0.5 1.0 1.5 2.0 2.5 3.0
Reference Voltage (V)