
0
-20
-40
-60
-80
-100
-120
-140
-160
100
200
300
Frequency(kHz)
400
500
600
Amplitude(dB)
f
=504kHz, 1dBFS
IN
-
SNR=91dB
THD= 117dB
-
SFDR=122dB
0
-20
-40
-60
-80
-100
-120
-140
-160
100
200
300
Frequency(kHz)
400
500
600
Amplitude(dB)
f
=504kHz, 6dBFS
IN
-
SNR=86dB
THD= 110dB
-
SFDR=115dB
0
-20
-40
-60
-80
-100
-120
-140
-160
100
200
300
Frequency(kHz)
400
500
600
Amplitude(dB)
f
=504kHz, 10dBFS
IN
-
SNR=83dB
THD= 110dB
-
SFDR=117dB
SIGNAL
-
T
O
-NOISERA
TIO
,
TOT
ALHARMONICDISTORTION,
SPURIOUS-FREEDYNAMICRANGE
(dB)
-80
-70
-60
-50
-40
-30
-20
-10
0
InputSignal Amplitude, V
(dB)
IN
SFDR
SNR
THD
140
120
100
80
60
40
20
f
=10kHz
IN
SIGNAL
-TO
-NOISERA
TIO
,
TOT
ALHARMONICDISTORTION,
SPURIOUS-FREEDYNAMICRANGE(dB)
-80
-70
-60
-50
-40
-30
-20
-10
0
InputSignal Amplitude, V
(dB)
IN
SFDR
SNR
THD
140
120
100
80
60
40
20
f
=100kHz
IN
SIGNAL
-TO
-NOISERA
TIO
,
TOT
ALHARMONICDISTORTION,
SPURIOUS-FREEDYNAMICRANGE(dB)
140
120
100
80
60
40
20
-80
-70
-60
-50
-40
-30
-20
-10
0
InputSignal Amplitude, V
(dB)
IN
SFDR
SNR
f
=500kHz
IN
THD
SBAS322D
– DECEMBER 2004 – REVISED OCTOBER 2011
TYPICAL CHARACTERISTICS (continued)
All specifications at TA = +25°C, AVDD = 5V, DVDD = IOVDD = 3V, fCLK = 20MHz, VREF = +3V, VCM = +2.7V, and
RBIAS = 60k, unless otherwise noted.
SPECTRAL RESPONSE
Figure 9.
Figure 10.
SNR, THD, AND SFDR
SPECTRAL RESPONSE
vs INPUT SIGNAL AMPLITUDE
Figure 11.
Figure 12.
SNR, THD, AND SFDR
vs INPUT SIGNAL AMPLITUDE
Figure 13.
Figure 14.
10
Copyright
2004–2011, Texas Instruments Incorporated