Datasheet

REV. B
AD7676
–8–
–Typical Performance Characteristics
CODE
1.00
0 16384 32768 49152 65536
INL – LSB
0.75
0.25
0
–0.50
–1.00
0.50
–0.25
–0.75
TPC 1. Integral Nonlinearity vs. Code
CODE IN HEXA
9000
7FFB
0
COUNTS
8000
6000
4000
2000
0000
7000
3000
1000
5000
7FFC
0
7FFD
0
7FFE
8
7FFF
8271
8000
8094
8001
11
8002
0
8003
0
8004
0
TPC 2. Histogram of 16,384 Conversions of a DC Input at
the Code Transition
POSITIVE INL – LSB
20
0.1
NUMBER OF UNITS
16
8
0
12
4
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.90
1.0
TPC 3. Typical Positive INL Distribution (199 Units)
CODE IN HEXA
16000
7FFB
0
COUNTS
12000
8000
4000
0000
14000
6000
2000
10000
7FFC
0
7FFD
0
7FFE
880
7FFF 8000
863
8001
0
8002
0
8003
0
8004
0
7FFA
0
14640
TPC 4. Histogram of 16,384 Conversions of a DC Input at
the Code Center
NEGATIVE INL – LSB
20
–0.9
NUMBER OF UNITS
16
8
0
12
4
–0.8 –0.7 –0.6 –0.5 –0.4 –0.3 –0.2 –0.1–1.0 0.0
TPC 5. Typical Negative INL Distribution (199 Units)
FREQUENCY – kHz
0
050100 150 250
AMPLITUDE – dB of Full Scale
–40
–80
–100
–140
–180
–60
–120
–160
200
–20
f
S
= 500kSPS
f
IN
= 45.01kHz
SNR = 94dB
THD = –110dB
SFDR = 110dB
SINAD = 93.9dB
TPC 6. FFT Plot