AD7641BSTZ Analog Devices Inc, AD7641BSTZ Datasheet - Page 12

• Manufacturer Part Number: AD7641BSTZ
• Description: IC ADC 18BIT 2MSPS SAR 48-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD7641BSTZ

• Data Interface: Serial, Parallel
• Number Of Bits: 18
• Sampling Rate (per Second): 2M
• Number Of Converters: 1
• Power Dissipation (max): 92mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Resolution (bits): 18bit
• Sampling Rate: 2MSPS
• Input Channel Type: Differential
• Supply Current: 23mA
• Digital Ic Case Style: QFP
• No. Of Pins: 48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7641CBZ - BOARD EVALUATION FOR AD7641
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

AD7641
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 7. Typical Reference Voltage Output vs. Temperature (3 Units)
2.0530
2.0525
2.0520
2.0515
2.0510
2.0505
2.0500
2.0495
2.0490
2.0485
2.0480
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
40000
35000
30000
25000
20000
15000
10000
Figure 6. Histogram of 261,120 Conversions of a DC Input at
3.0
2.5
2.0
1.5
1.0
0.5
5000
0
0
0
–55
0
0
–35
Figure 5. Integral Nonlinearity vs. Code
the Code Center (External Reference)
2
65536
11
–15
272
683
5
4730
TEMPERATURE (°C)
10938
CODE IN HEX
131072
CODE
25
34844
31003
45
24739
16207
65
5248
196608
2124
85
232
σ = 1.55
39
105
0
262144
0
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Figure 10. Zero Error, Positive and Negative Full Scale vs. Temperature
–0.5
–1.0
–1.5
–2.0
30000
25000
20000
15000
10000
Figure 9. Histogram of 261,120 Conversions of a DC Input at
–10
–12
–14
–16
–18
–20
2.0
1.5
1.0
0.5
5000
20
18
16
14
12
10
–2
–4
–6
–8
0
8
6
4
2
0
–55
0
0
1 1 52 117
Figure 8. Differential Nonlinearity vs. Code
–35
the Code Center (Internal Reference)
ZERO-ERROR
–15
65536
912
2105
10846
+FS
–FS
5
TEMPERATURE (°C)
12922
22225
CODE IN HEX
25
131072
CODE
24731
45
23436
18995
65
8219
196608
4688
1171
85
589 51 10 1
σ = 2.02
105
262144
125