AD7671 Analog Devices, AD7671 Datasheet - Page 9

• Manufacturer Part Number: AD7671
• Manufacturer: Analog Devices

Specifications of AD7671

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Par,Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 2,Bip (Vref) x 4,Uni (Vref),Uni (Vref) x 2,Uni (Vref) x 4
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

REV. B
TPC 3. Typical Positive INL Distribution (314 Units)
–0.25
–0.50
–0.75
–1.00
–0.5
–1.0
–1.5
–2.0
–2.5
1.75
1.50
1.25
1.00
0.75
0.50
0.25
2.5
2.0
1.5
1.0
0.5
60
50
40
30
20
10
0
0
0
TPC 2. Differential Nonlinearity vs. Code
0
0
0
TPC 1. Integral Nonlinearity vs. Code
0.3
0.6
16384
16384
0.9
POSITIVE INL – LSB
1.2
CODE
CODE
32768
32768
1.5
1.8
2.1
49152
49152
2.4
2.7
Typical Performance Characteristics–AD7671
65536
65536
3.0
–9–
TPC 5. Histogram of 16,384 Conversions of a DC Input at
the Code Transition
TPC 6. Histogram of 16,384 Conversions of a DC Input at
the Code Center
TPC 4. Typical Negative INL Distribution (314 Units)
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
8000
7000
6000
5000
4000
3000
2000
1000
60
50
40
30
20
10
0
0
0
–3.0
7FFC 7FFD 7FFE 7FFF 8000 8001 8002 8003 8004 8005 8006
7FFD 7FFE 7FFF 8000 8001 8002 8003 8004 8005 8005
0
0
–2.7
0
0
–2.4
2
17
–2.1 –1.8
132
1297
NEGATIVE INL – LSB
3296
CODE IN HEXA
CODE IN HEXA
7029 7039
9503
–1.5
3344
–1.2
986
106
–0.9
25
1
–0.6 –0.3
0
0
0
0