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