AD7675 Analog Devices, AD7675 Datasheet - Page 8

• Manufacturer Part Number: AD7675
• Manufacturer: Analog Devices

Specifications of AD7675

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 100kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: QFP

AD7675
TPC 2. Histogram of 16,384 Conversions of a DC Input at
the Code Transition
TPC 3. Typical Positive INL Distribution (40 Units)
–0.25
–0.50
–0.75
–1.00
9000
8000
7000
6000
5000
4000
3000
2000
1000
0000
1.00
0.75
0.50
0.25
0.00
18
16
14
12
10
8
6
4
2
0
0
0
7FFB
TPC 1. Integral Nonlinearity vs. Code
–Typical Performance Characteristics
0
7FFC
0
0.2
16384
7FFD
0
7FFE
6
POSITIVE INL – LSB
0.4
CODE IN HEXA
8246
7FFF
CODE
32768
8118
8000
0.6
8001
14
49152
8002
0
0.8
8003
0
8004
0
65536
1.0
–8–
TPC 4. Histogram of 16,384 Conversions of a DC Input at
the Code Center
TPC 5. Typical Negative INL Distribution (40 Units)
16000
14000
12000
10000
8000
6000
4000
2000
0000
–100
–120
–140
–160
–180
–20
–40
–60
–80
18
16
14
12
10
0
8
6
4
2
0
–1.0
0
7FF8
0
7FF9
0
–0.8
7FFA
10
0
7FFB
TPC 6. FFT Plot
0
NEGATIVE INL – LSB
FREQUENCY – kHz
7FFC
–0.6
887
CODE IN HEXA
20
f
f
SNR = 94dB
THD = –110dB
SFDR = 110dB
SINAD = 93.9dB
IN
14687
S
7FFD 7FFE
= 100 kSPS
= 45.01kHz
810
–0.4
30
7FFF
0
8000
0
–0.2
40
8001
0
8002
0
0.0
50
REV. A