ISL267440 Datasheet, PDF (8/17 Pages) Intersil Corporation – 10-Bit and 12-Bit, 1MSPS SAR ADCs

ISL267440, ISL267450A
Typical Performance Characteristics
75
0
5.25V
-20
70
3.6V
4.75V
-40
2.7V
-60
65
-80
8192-POINT FFT
f_SAMPLE = 1MSPS
f_IN = 95.2kHz
SINAD = 72.0dB
THD = -91dB
SFDR = 93dB
-100
60
-120
55
10
100
1k
INPUT FREQUENCY (kHz)
FIGURE 5. ISL267450A SINAD vs ANALOG INPUT FREQUENCY FOR
VARIOUS SUPPLY VOLTAGES
-140
0
100
200
300
400
500
FREQUENCY (kHz)
FIGURE 6. ISL267450A DYNAMIC PERFORMANCE WITH V_DD = 5V
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
10k
100k
1k
10k
FREQUENCY (Hz)
FIGURE 7. CMRR vs FREQUENCY FOR V_DD = 5V
0
250mVP-P SINE WAVE ON VDD
NO DECOUPLING ON VDD
-20
-40
-60
-80
-100
-120
0
100 200 300 400 500 600 700 800 900 1000
FREQUENCY (kHz)
FIGURE 9. PSRR vs SUPPLY RIPPLE FREQUENCY WITHOUT SUPPLY
DECOUPLING
8
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0
1024
2048
CODE
3072
4096
FIGURE 8. TYPICAL DNL FOR THE ISL267450A FOR V_DD = 5V
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0
1024
2048
CODE
3072
4096
FIGURE 10. TYPICAL INL FOR THE ISL267450A FOR V_DD = 5V
FN7708.0
December 5, 2011