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參數(shù)資料
| 型號(hào)： | AD704 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Quad Picoampere Input Current Bipolar Op Amp(輸入微微安培電流雙極性四運(yùn)放) |
| 中文描述： | 四Picoampere輸入電流雙極運(yùn)算放大器（輸入微微安培電流雙極性四運(yùn)放） |
| 文件頁(yè)數(shù)： | 8/8頁(yè) |
| 文件大?。?/td> | 403K |
| 代理商： | AD704 |
AD704
REV. A
–8–
C
P
14-Pin Cerdip (Q) Package
16-Pin Plastic SO (R) Package
14-Pin Plastic DIP (N) Package
20-Terminal LCCC (E) Package
0.358 (9.09)
0.342 (8.69)
NO. 1 PIN
INDEX
0.040 (1.02)
x 45
°
REF
3 PLCS
0.020 (0.51)
x 45
°
REF
0.050
(1.27)
BSC
0.100 (2.54)
0.064 (1.63)
0.028 (0.71)
0.022 (0.56)
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
Table II. 1 Hz, 4-Pole Low-Pass Filter Recommended Component Values
Section 1
Frequency
(Hz)
Section 2
Frequency
(Hz)
Desired Low
Pass Response
C1
(
m
F)
C2
(
m
F)
C3
(
m
F)
C4
(
m
F)
Q
Q
Bessel
Butterworth
0.1 dB Chebychev
0.2 dB Chebychev
0.5 dB Chebychev
1.0 dB Chebychev
1.43
1.00
0.648
0.603
0.540
0.492
0.522
0.541
0.619
0.646
0.705
0.785
1.60
1.00
0.948
0.941
0.932
0.925
0.806
1.31
2.18
2.44
2.94
3.56
0.116
0.172
0.304
0.341
0.416
0.508
0.107
0.147
0.198
0.204
0.209
0.206
0.160
0.416
0.733
0.823
1.00
1.23
0.0616
0.0609
0.0385
0.0347
0.0290
0.0242
Specified Values are for a –3 dB point of 1.0 Hz. For other frequencies simply scale capacitors C1 through C4 directly; i.e., for 3 Hz Bessel response, C1 = 0.0387
μ
F,
C2 = 0.0357
μ
F, C3 = 0.0533
μ
F, C4 = 0.0205
μ
F.
The 1 Hz, 4-pole active filter offers dc precision with a mini-
mum of components and cost. The low current noise, I
OS
, and
I
B
allow the use of 1 M
resistors without sacrificing the
1
μ
V/
°
C drift of the AD704. This means lower capacitor values
may be used, reducing cost and space. Furthermore, since the
AD704’s I
B
is as low as its I
OS
, over most of the MIL tempera-
ture range, most applications do not require the use of the
normal balancing resistor (with its stability capacitor). Adding the
optional balancing resistor enhances performance at high
temperatures, as shown in Figure 26. Table II gives capacitor
values for several common low pass responses.
180
120
60
0
–60
–120
–180
–40
0
+40
+80
o
+120
O
O
μ
V
WITHOUT OPTIONAL
BALANCE RESISTOR, R3
TEMPERATURE – C
WITH OPTIONAL
BALANCE RESISTOR, R3
Figure 26. V
OS
vs. Temperature Performance of the 1 Hz
Filter Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD704_02 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad Picoampere Input Current Bipolar Op Amp |
| AD704-00E | 功能描述:SENSOR MAG SW 20G STANDRD 8-MSOP 制造商:nve corp/sensor products 系列:AD 包裝:管件 零件狀態(tài):有效 功能:全極開關(guān) 技術(shù):霍爾效應(yīng) 極化:任意一種 感應(yīng)范圍:±2.5mT 跳閘，±1.1mT 釋放 測(cè)試條件:-40°C ~ 125°C 電壓 - 電源:4.5 V ~ 30 V 電流 - 電源（最大值）:4.5mA 電流 - 輸出（最大值）:20mA 輸出類型:開路集電極 特性:- 工作溫度:-40°C ~ 125°C（TA） 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商器件封裝:8-MSOP 標(biāo)準(zhǔn)包裝:1,000 |
| AD704-02E | 功能描述:SENSOR MAG SW 20G STNDRD 8-SOIC 制造商:nve corp/sensor products 系列:AD 包裝:管件 零件狀態(tài):有效 功能:全極開關(guān) 技術(shù):霍爾效應(yīng) 極化:任意一種 感應(yīng)范圍:±2.5mT 跳閘，±1.1mT 釋放 測(cè)試條件:-40°C ~ 125°C 電壓 - 電源:4.5 V ~ 30 V 電流 - 電源（最大值）:4.5mA 電流 - 輸出（最大值）:20mA 輸出類型:開路集電極 特性:- 工作溫度:-40°C ~ 125°C（TA） 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SOIC 標(biāo)準(zhǔn)包裝:1,000 |
| AD704AN | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD704AQ | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad Picoampere Input Current Bipolar Op Amp |
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