Datasheet

1 10 100
Frequency(Hz)
0
-20
-40
-60
-80
-100
-120
-140
-160
Amplitude(dB)
1k 10k
Low-SpeedMode
f =100Hz, 0.5dBFS-
IN
32,768Points
1 10 100
Frequency(Hz)
0
-20
-40
-60
-80
-100
-120
-140
-160
Amplitude(dB)
1k 10k
Low-SpeedMode
f =100Hz, 20dBFS-
IN
32,768Points
0.1 1 10 100
Frequency(Hz)
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
Amplitude(dB)
1k 10k
Low-SpeedMode
ShortedInput
262,144Points
-35 -28 -21 -14
-7
0 7
14 21 28 35
Output( V)m
25k
20k
15k
10k
5k
0
NumberofOccurrences
Low-SpeedMode
ShortedInput
262,144Points
10 100 1k
Frequency(Hz)
0
-20
-40
-60
-80
-100
-120
-140
THD,THD+N(dB)
10k 100k
High-SpeedMode
V = 0.5dBFS-
IN
THD+N
THD
-120 -100 -80 -60 -40
InputAmplitude(dBFS)
0
-20
-40
-60
-80
-100
-120
-140
THD,THD+N(dB)
-20 0
High-SpeedMode
f =1kHz
IN
THD+N
THD
ADS1274
ADS1278
SBAS367F –JUNE 2007–REVISED FEBRUARY 2011 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, High-Speed mode, AVDD = +5V, DVDD = +1.8V, IOVDD = +3.3V, f
CLK
= 27MHz, VREFP = 2.5V, and
VREFN = 0V, unless otherwise noted.
OUTPUT SPECTRUM OUTPUT SPECTRUM
Figure 13. Figure 14.
OUTPUT SPECTRUM NOISE HISTOGRAM
Figure 15. Figure 16.
TOTAL HARMONIC DISTORTION TOTAL HARMONIC DISTORTION
vs FREQUENCY vs INPUT AMPLITUDE
Figure 17. Figure 18.
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Product Folder Link(s): ADS1274 ADS1278