參數(shù)資料
型號: AD7705BR
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: ECONOLINE: REC2.2-S_DRW(Z)/H* - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- 4.5-9V, 9-18V, 18-36V, 36-72V Wide Input Range 2 : 1- UL94V-0 Package Material- Continuous Short Circiut Protection- Cost Effective- 100% Burned In- Efficiency to 84%
中文描述: 2-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO16
封裝: 0.300 INCH, MS-013AA, SOIC-16
文件頁數(shù): 9/32頁
文件大?。?/td> 264K
代理商: AD7705BR
AD7705/AD7706
–9–
REV. A
Typical Performance Characteristics–
READING NO.
32763
0
100
C
32764
32765
32766
32767
32768
32769
32770
32771
200
300
400
500
600
700
800
900 1000
V
DD
= 5V
V
REF
= 2.5V
GAIN = 128
50Hz UPDATE RATE
T
= +25
8
C
RMS NOISE = 600nV
Figure 2. Typical Noise Plot @ Gain = 128 with 50 Hz
Update Rate
FREQUENCY – MHz
0.4
I
D
V
DD
= 3V
T
A
= +25
8
C
1.2
1.0
0.8
0.6
0.4
0.2
0
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
BUFFERED MODE, GAIN = 128
UNBUFFERED MODE, GAIN = 1
UNBUFFERED MODE, GAIN = 128
BUFFERED MODE, GAIN = 1
Figure 3. Typical I
DD
vs. MCLKIN Frequency @ 3 V
GAIN
1
I
D
V
= 3V
EXTERNAL MCLK
CLKDIS = 1
T
A
= +25
8
C
1.0
0.8
0.6
0.4
0.2
0
0.1
0.3
0.5
0.7
0.9
2
4
8
16
32
64
128
BUFFERED MODE
f
= 5MHz,
CLKDIV = 1
BUFFERED MODE
f
CLK
= 1MHz, CLKDIV = 0
BUFFERED MODE
f
CLK
= 2.4576MHz, CLKDIV = 0
UNBUFFERED MODE
f
CLK
= 2.84MHz, CLKDIV = 0
UNBUFFERED MODE
f
= 1MHz,
CLKDIV = 0
UNBUFFERED MODE
f
CLK
= 5MHz, CLKDIV = 1
Figure 4. Typical I
DD
vs. Gain and Clock Frequency @ 3 V
CODE
32764
O
400
0
32765
32766
32767
32768
32769
32770
300
200
100
Figure 5. Histogram of Data in Figure 2
FREQUENCY – MHz
0.4
I
D
V
DD
= 5V
T
A
= +25
8
C
1.2
1.0
0.8
0.6
0.4
0.2
0
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
BUFFERED MODE, GAIN = 128
UNBUFFERED MODE, GAIN = 1
UNBUFFERED MODE, GAIN = 128
BUFFERED MODE, GAIN = 1
Figure 6. Typical I
DD
vs. MCLKIN Frequency @ 5 V
GAIN
1
I
D
V
= 5V
EXTERNAL MCLK
CLKDIS = 1
T
A
= +25
8
C
1.2
0.8
0.6
0.4
0.2
0
1.0
2
4
8
16
32
64
128
BUFFERED MODE
f
= 5MHz,
CLKDIV = 1
BUFFERED MODE
f
CLK
= 1MHz, CLKDIV = 0
BUFFERED MODE
f
CLK
= 2.4576MHz, CLKDIV = 0
UNBUFFERED MODE
f
CLK
= 2.4576MHz, CLKDIV = 0
UNBUFFERED MODE
f
= 1MHz,
CLKDIV = 0
UNBUFFERED MODE
f
CLK
= 5MHz, CLKDIV = 1
Figure 7. Typical I
DD
vs. Gain and Clock Frequency @ 5 V
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