Datasheet

REV. D
AD7660
–8–
–Typical Performance Characteristics
CODE
–3
0
INL – LSB
16384
–2
–1
0
1
2
3
32768 49152 65536
TPC 1. Integral Nonlinearity
vs. Code
CODE
–1.00
0
DNL – LSB
16384
0.00
32768 49152 65536
–0.75
0.50
1.00
1.75
1.50
1.25
0.75
0.25
–0.50
–0.25
TPC 4. Differential Nonlinearity
vs. Code
FREQUENCY – kHz
01020304050
AMPLITUDE – dB of Full Scale
–180
–120
–40
0
–80
–140
–60
–20
–100
–160
4096 POINT FFT
f
S
= 100kHz
f
IN
= 45kHz
SNR = 90.14dB
SINAD = 89.94dB
THD = –101.37dB
SFDR = 110dB
TPC 7. FFT Plot
POSITIVE INL – LSB
0
0
NUMBER OF UNITS
0.6
5
10
15
20
25
30
1.2 1.8 2.4 3.0
TPC 2. Typical Positive INL
Distribution (350 Units)
NEGATIVE INL – LSB
0
0
NUMBER OF UNITS
–0.6
5
10
15
20
25
30
–1.2–1.8–2.4–3.0
35
TPC 5. Typical Negative INL
Distribution (350 Units)
–130
1
THD, HARMONICS – dB
10 100 1000
–90
–80
–60
–70
–100
–120
–110
SFDR
THD
60
SFDR – dB
90
100
120
110
80
70
SECOND HARMONIC
THIRD HARMONIC
FREQUENCY – kHz
TPC 8. THD, Harmonics, and SFDR
vs. Frequency
CODE – Hex
0
COUNTS
8008
8000
7000
6000
5000
4000
3000
2000
1000
0
8009
800A
800B
800C
800D
800E
800F
8010
8011
013 9 0 0
879
1213
7051
7219
TPC 3. Histogram of 16,384
Conversions of a DC Input
at the Code Transition
CODE – Hex
0
COUNTS
10000
8000
6000
4000
0
8009
800A
800B
800C
800D
800E
800F
8010
8011
0
188
00
161
2000
9026
3520
3489
TPC 6. Histogram of 16,384
Conversions of a DC Input
at the Code Center
INPUT LEVEL – dB
–140
–90
THD, HARMONICS – dB
–90
–80
–60
–70
–100
–120
–110
THD
SECOND HARMONIC
THIRD HARMONIC
–80 0–10–20–30–40–50–60–70
–130
TPC 9. THD, Harmonics vs.
Input Level