ADS7844 Datasheet, PDF (5/22 Pages) Burr-Brown (TI) – 12-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER

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
–40
–60
–80
–100
–120
0
25
50
75
100
Frequency (kHz)
FREQUENCY SPECTRUM
(4096 Point FFT; fIN = 10.3kHz, –0.2dB)
0
–20
–40
–60
–80
–100
–120
0
25
50
75
100
Frequency (kHz)
SIGNAL-TO-NOISE RATIO AND SIGNAL-TO-
(NOISE+DISTORTION) vs INPUT FREQUENCY
74
SNR
73
72
SINAD
71
70
69
68
1
10
100
Input Frequency (kHz)
SPURIOUS FREE DYNAMIC RANGE AND TOTAL
HARMONIC DISTORTION vs INPUT FREQUENCY
85
–85
SFDR
80
–80
THD
75
–75
70
–70
65
1
10
Input Frequency (kHz)
–65
100
12.0
11.8
11.6
11.4
11.2
11.0
1
EFFECTIVE NUMBER OF BITS
vs INPUT FREQUENCY
10
100
Input Frequency (kHz)
CHANGE IN SIGNAL-TO-(NOISE+DISTORTION)
vs TEMPERATURE
0.6
0.4
0.2
0.0
–0.2
–0.4
f_IN = 10kHz, –0.2dB
–0.6
–40 –20
0
20
40
60
Temperature (°C)
80 100
ADS7844
5
SBAS100A
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