Datasheet

0 50
Frequency(Hz)
0
-20
-40
-60
-80
-180
Amplitude(dB)
100 150 500250 350 450200 300 400
-100
-120
-140
-160
V = 0.5dBFS,31.25Hz
THD= 121.8dB
IN
-
-
0 50
Frequency(Hz)
0
-20
-40
-60
-80
-180
Amplitude(dB)
100 150 500250 350 450200 300 400
-100
-120
-140
-160
V = 20dBFS,31.25Hz
THD= 120.1dB
IN
-
-
0 50
Frequency(Hz)
0
-20
-40
-60
-80
-180
Amplitude(dB)
100 150 500250 350 450200 300 400
-100
-120
-140
-160
ShortedInput
SNR=124.1dB
0 50
Frequency(Hz)
0
-20
-40
-60
-80
-180
Amplitude(dB)
100 150 500250 350 450200 300 400
-100
-120
-140
-160
V =20mV
SNR=124.3dB
IN DC
10 20
InputFrequency(Hz)
-100
-105
-110
-115
-120
-130
THD(dB)
30 40 10060 8050 70 90
-125
THDLimitedby
SignalGenerator
V = 0.5dBFS-
IN
122.00
SNR(dB)
14
12
10
8
0
Occurences
6
4
122.50
123.00
123.50
124.00
124.50 125.00
122.25
122.75
123.25
123.75
124.25
124.75
2
25Units
ShortedInput
ADS1281
www.ti.com SBAS378D –AUGUST 2007–REVISED JUNE 2010
TYPICAL CHARACTERISTICS
At T
A
= +25°C, AVDD = +2.5V, AVSS = –2.5V, f
CLK
= 4.096MHz, VREFP = +2.5V, VREFN = –2.5V, DVDD = +3.3V, and
f
DATA
= 1000SPS, unless otherwise noted.
OUTPUT SPECTRUM OUTPUT SPECTRUM
Figure 1. Figure 2.
OUTPUT SPECTRUM OUTPUT SPECTRUM
Figure 3. Figure 4.
THD vs INPUT FREQUENCY SNR HISTOGRAM
Figure 5. Figure 6.
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