TYPICAL PERFORMANCE CURVES:+5V
At TA = +25°C, +VCC = +5V, VREF = +5V, fSAMPLE = 200kHz, and fCLK = 16 • fSAMPLE = 3.2MHz, unless otherwise noted.
FREQUENCY SPECTRUM
FREQUENCY SPECTRUM
(4096 Point FFT; f = 1,123Hz, –0.2dB)
(4096 Point FFT; f = 10.3kHz, –0.2dB)
IN
IN
0
–20
0
–20
–40
–40
–60
–60
–80
–80
–100
–120
–100
–120
0
25
50
75
100
100
100
0
25
50
75
100
Frequency (kHz)
Frequency (kHz)
SIGNAL-TO-NOISE RATIO AND SIGNAL-TO-
(NOISE+DISTORTION) vs INPUT FREQUENCY
SPURIOUS FREE DYNAMIC RANGE AND TOTAL
HARMONIC DISTORTION vs INPUT FREQUENCY
–85
–80
–75
–70
–65
85
80
75
70
65
74
73
72
71
70
69
68
SFDR
SNR
SINAD
THD
1
10
100
1
10
Input Frequency (kHz)
Input Frequency (kHz)
EFFECTIVE NUMBER OF BITS
vs INPUT FREQUENCY
CHANGE IN SIGNAL-TO-(NOISE+DISTORTION)
vs TEMPERATURE
0.6
0.4
12.0
11.8
11.6
11.4
11.2
11.0
0.2
0.0
–0.2
–0.4
–0.6
fIN = 10kHz, –0.2dB
–40
–20
0
20
40
60
80
100
1
10
Temperature (°C)
Input Frequency (kHz)
®
ADS7844
5
BB [ BURR-BROWN CORPORATION ]
