TYPICAL CHARACTERISTICS: +2.7V
At TA = +25°C, +VCC = +2.7V, VREF = +2.5V, fSAMPLE = 125kHz, and fCLK = 16 • fSAMPLE = 2MHz, unless otherwise noted.
FREQUENCY SPECTRUM
(4096 Point FFT; f = 10.6kHz, –0.2dB)
FREQUENCY SPECTRUM
(4096 Point FFT; f = 1,129Hz, –0.2dB)
IN
IN
0
–20
0
–20
–40
–40
–60
–60
–80
–80
–100
–120
–100
–120
0
1
1
15.6
31.3
46.9
62.5
100
100
0
15.6
31.3
46.9
62.5
100
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
78
74
70
66
62
58
54
90
85
80
75
70
65
60
55
50
–90
–85
–80
–75
–70
–65
–60
–55
–50
SNR
SFDR
THD
SINAD
10
1
10
Input Frequency (kHz)
Input Frequency (kHz)
EFFECTIVE NUMBER OF BITS
vs INPUT FREQUENCY
CHANGE IN SIGNAL-TO-(NOISE+DISTORTION)
vs TEMPERATURE
12.0
11.5
11.0
10.5
10.0
9.5
0.4
0.2
fIN = 10kHz, –0.2dB
0.0
–0.2
–0.4
–0.6
–0.8
9.0
–40
–20
0
20
40
60
80
10
Temperature (˚C)
Input Frequency (kHz)
ADS7841
6
SBAS084B
TI [ TEXAS INSTRUMENTS ]
