AD7634 Analog Devices, AD7634 Datasheet - Page 14

• Manufacturer Part Number: AD7634
• Manufacturer: Analog Devices

Specifications of AD7634

• Resolution (bits): 18bit
• # Chan: 1
• Sample Rate: 670kSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: 10V p-p,20 V p-p,40 V p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7634
Figure 19. Reference Voltage Temperature Coefficient Distribution (247 Devices)
Figure 18. Zero/Offset Error, Positive and Negative Full-Scale Error vs.
–120
–124
–128
–100
–104
–108
–112
–116
–12
–16
–20
20
16
12
–4
–8
60
50
40
30
20
10
8
4
0
0
–55
–55
0
–35
–35
1
Temperature, All Normalized to 25°C
±10V
–15
–15
Figure 17. THD vs. Temperature
2
REFERENCE DRIFT (ppm/°C)
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
3
0V TO 10V
25
25
±5V
ZERO/OFFSET ERROR
4
FULL-SCALE ERROR
45
45
NEGATIVE
5
FULL-SCALE ERROR
65
65
POSITIVE
6
85
85
0V TO 5V
7
105
105
8
125
125
Rev. A | Page 14 of 32
Figure 21. Typical Reference Voltage Output vs. Temperature (3 Devices)
100000
10000
0.001
5.0080
5.0060
5.0040
5.0020
5.0000
4.9980
4.9960
4.9940
4.9920
1000
0.01
100
0.1
128
124
120
116
112
108
104
100
10
1
10
–55
–55
Figure 20. SFDR vs. Temperature (Excludes Harmonics)
AVDD, IMPULSE
Figure 22. Operating Currents vs. Sample Rate
–35
–35
AVDD, WARP/NORMAL
DVDD, ALL MODES
OVDD, ALL MODES
100
–15
–15
SAMPLING RATE (SPS)
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
1000
0V TO 10V
25
25
±10V
45
45
10000
PDREF = PDBUF = HIGH
±5V
65
65
VCC +15V
VEE –15V
ALL MODES
0V TO 5V
100000
85
85
105
105
1000000
125
125