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AD7708 数据表(PDF) 14 Page - Analog Devices

部件名 AD7708
功能描述  8-/10-Channel, Low Voltage, Low Power, ADCs
PDF  44 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7708 数据表(HTML) 14 Page - Analog Devices

Back Button AD7708 Datasheet HTML 10Page - Analog Devices AD7708 Datasheet HTML 11Page - Analog Devices AD7708 Datasheet HTML 12Page - Analog Devices AD7708 Datasheet HTML 13Page - Analog Devices AD7708 Datasheet HTML 14Page - Analog Devices AD7708 Datasheet HTML 15Page - Analog Devices AD7708 Datasheet HTML 16Page - Analog Devices AD7708 Datasheet HTML 17Page - Analog Devices AD7708 Datasheet HTML 18Page - Analog Devices Next Button
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REV. 0
–14–
AD7708/AD7718
READING NUMBER
8389600
8389400
8388000
0
1000
100
200
300
8389200
400
500
600
700
800
900
8389000
8388800
8388600
8388400
8388200
AVDD = DVDD = 5V
INPUT RANGE =
20mV
REFIN1(+)–REFIN1(–) = 2.5V
UPDATE RATE = 19.79Hz
TA = 25 C
VREF = 2.5V
RMS NOISE = 0.58 V rms
TPC 1. AD7718 Typical Noise Plot on
±20 mV Input Range
with 19.79 Hz Update Rate
8
7
0
6
5
4
3
2
1
9
TPC 2. AD7718 Noise Distribution Histogram
2.5
0
1.0
3.0
2.5
2.0
1.5
3.5
5.0
4.5
4.0
2.0
1.5
1.0
0.5
3.0
VREF – V
20mV RANGE
2.56V RANGE
AVDD = DVDD = 5V
VREF = 2.5V
INPUT RANGE =
2.56V
UPDATE RATE = 19.79Hz
TA = 25 C
TPC 3. RMS Noise vs. Reference Input
(AD7718 andAD7708)
16
040
30
20
10
50
100
90
80
70
60
24
22
20
18
26
UPDATE RATE – Hz
110
CHOP = 0
TPC 4. AD7718 No-Missing Codes Performance
32767
100
0
200
400
300
32771
32770
32769
32768
32772
READING NUMBER
500
32766
32765
32764
600
700
800
900
1000
AVDD = DVDD = 5V
INPUT RANGE =
20mV
UPDATE RATE = 19.79Hz
VREF = 2.5V
TA = 25 C
TPC 5. AD7708 Typical Noise Plot on
±20 mV Input Range
200
32767
32766
32768
32770
32769
600
500
400
300
700
CODE
32771
100
0
TPC 6. AD7708 Noise Histogram
–Typical Performance Characteristics



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