- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375236 > AD705 (Analog Devices, Inc.) Picoampere Input Current Bipolar Op Amp(輸入微微安培電流雙極性運放) PDF資料下載
參數(shù)資料
| 型號： | AD705 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Picoampere Input Current Bipolar Op Amp(輸入微微安培電流雙極性運放) |
| 中文描述： | Picoampere輸入電流雙極運算放大器（輸入微微安培電流雙極性運放） |
| 文件頁數(shù)： | 8/8頁 |
| 文件大?。?/td> | 455K |
| 代理商： | AD705 |
AD705
REV. B
–8–
P
C
A 1 Hz, 2-Pole, Active Filter
Table II gives recommended component values for the 1 Hz fil-
ter of Figure 26. An unusual characteristic of the AD705 is that
both the input bias current and the input offset current and their
drift remain low over most of the op amps rated temperature
range. Therefore, for most applications, there is no need to use
the normal balancing resistor tied between the noninverting ter-
minal of the op amp and ground. Eliminating the standard bal-
ancing resistor reduces board space and lowers circuit noise.
However, this resistor is needed at temperatures above 110
°
C,
because input bias current starts to change rapidly, as shown by
Figure 27.
6
4
0.1μF
–V
S
7
0.1μF
+V
S
AD705
V
OUT
C1
C3
0.01μF
R3
2M
R2
1M
C2
R1
1M
INPUT
OPTIONAL BALANCE
RESISTOR NETWORK
WITHOUT THE NETWORK,
PINS 2 AND 6 OF THE AD705
ARE TIED TOGETHER.
CAPACITORS C1, C2 AND C3 ARE SOUTHERN ELECTRONICS MPCC,
POLYCARBONATE,
±
5%, 50 VOLT.
2
3
Figure 26. A 1 Hz, 2-Pole Active Filter
Table II. Recommended Component Values
for the 1 Hz Low-Pass Filter
Desired Low
Pass Response
Pole
Frequency
(Hz)
Pole Q
C1 Value
C2 Value
(
m
F)
(
m
F)
Bessel Response
Butterworth Response
0.1 dB Chebychev
0.2 dB Chebychev
0.5 dB Chebychev
1.0 dB Chebychev
1.27
1.00
0.93
0.90
0.85
0.80
0.58
0.707
0.77
0.80
0.86
0.96
0.14
0.23
0.26
0.28
0.32
0.38
0.11
0.11
0.11
0.11
0.11
0.10
Specified values are for a –3 dB point of 1.0 Hz. For other frequencies,
simply scale capacitors C1 and C2 directly; i.e., for 3 Hz Bessel response,
C1 = 0.046
μ
F, C2 = 0.037
μ
F.
90
–90
+140
0
–60
–40
–30
–60
60
30
+120
+80
+60
+40
+100
+20
0
–20
O
TEMPERATURE –
°
C
WITHOUT OPTIONAL
BALANCE RESISTOR, R3
WITH OPTIONAL BALANCE
RESISTOR, R3
Figure 27. V
OS
vs. Temperature of 1 Hz Filter
0.310 (7.87)
0.220 (5.59)
0.015 (0.38)
0.008 (0.20)
0.005 (0.13) MIN
0.055 (1.4) MAX
1
4
5
8
0.405 (10.29) MAX
0.200
(5.08)
MAX
SEATING
PLANE
0.023 (0.58)
0.014 (0.36)
0.070 (1.78)
0.030 (0.76)
0.060 (1.52)
0.015 (0.38)
0.150
(3.81)
MIN
0.200 (5.08)
0.125 (3.18)
0.100
(2.54)
BSC
0.25R
0-15
°
0.32 (8.13)
0.29 (7.37)
PIN 1
4
5
1
8
0.0500
(1.27)
BSC
(3.91
±
±
0.004
(6.00
±
±
0.012
(4.90
±
±
0.008
±
0.098
±
0.006
±
(0.008
±
0.004
±
0.017
±
0.003
±
0.03)
0.011
±
±
0.033
±
0.017
PIN 1
(0.25
4
5
8
1
SEATING
PLANE
0.100
(2.54)
TYP
(0.31
0.39 (9.91)
MAX
±
0.035
±
0.01
±
0.76)
0.18
±
0.033
(0.84)
NOM
(0.46
±
±
0.003
0.125 (3.18)
MIN
±
0.165
±
0.01
0.30 (7.62)
REF
(0.28
±
0.08)
±
0-15
°
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
Cerdip (Q) Package
Plastic Mini-DIP (N) Package
8-Pin SOIC (R) Package
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD706 | Dual Picoampere Input Current Bipolar Op Amp(輸入微微安培電流雙極性雙運放) |
| AD7228A | Octal 8-Bit DAC(八通道LC2MOS 8位D/A轉(zhuǎn)換器) |
| AD7233 | 12-Bit Serial Mini-DIP DACPORT(12位電壓輸出D/A轉(zhuǎn)換器) |
| AD7249AN | LC2MOS Dual 12-Bit Serial DACPORT |
| AD7249AR | LC2MOS Dual 12-Bit Serial DACPORT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD705-00E | 功能描述:SENSOR MAG SW 40G 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:±5mT 跳閘，±2.5mT 釋放 測試條件:-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 |
| AD705-02E | 功能描述:SENSOR MAG SW 40G STANDARD 8SOIC 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:±5mT 跳閘，±2.5mT 釋放 測試條件:-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 |
| AD705AQ | 制造商:Rochester Electronics LLC 功能描述:DC PRECISION OP AMP IC - Bulk |
| AD705AZ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD705BQ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。