TYPICAL PERFORMANCE CURVES (Cont.)
At TA = +25°C, VCC = +5V, VREF = +2.5V, fSAMPLE = 200kHz, and fCLK = 16 • fSAMPLE, –In = +2.5V, unless otherwise specified.
FREQUENCY SPECTRUM
(4096 Point FFT; fIN = 9.9kHz, –0.5dB)
POWER SUPPLY REJECTION vs RIPPLE FREQUENCY
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
–20
–40
–60
–80
–100
–120
1
10
100
1000
10000
0
25
50
75
100
Ripple Frequency (kHz)
Frequency (kHz)
SPURIOUS FREE DYNAMIC RANGE AND
TOTAL HARMONIC DISTORTION
vs INPUT FREQUENCY
SIGNAL-TO-NOISE RATIO AND
SIGNAL-TO-(NOISE+DISTORTION)
vs INPUT FREQUENCY
95
90
85
80
75
70
65
–95
–90
–85
–80
–75
–70
–65
73
72
71
70
69
68
67
SNR
SFDR
SINAD
THD
1
10
100
1
10
100
Input Frequency (kHz)
Input Frequency (kHz)
SIGNAL-TO-(NOISE+DISTORTION)
vs INPUT LEVEL
CHANGE IN INTEGRAL LINEARITY and DIFFERENTIAL
LINEARITY vs SAMPLE RATE
1.5
1.0
0.5
0
80
70
60
50
40
30
20
10
Change in Integral
Linearity (LSB)
Change in Differential
Linearity (LSB)
–0.5
0
80
160
240
320
400
–60
–50
–40
–30
–20
–10
0
Sample Rate (kHz)
Input Level (dB)
®
ADS7817
5