參數(shù)資料
型號： 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放)
中文描述： 四Picoampere輸入電流雙極運算放大器（輸入微微安培電流雙極性四運放）
文件頁數(shù)： 1/8頁
文件大?。?/td> 403K
代理商： AD704
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
AD704
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
FEATURES
High DC Precision
75
m
V max Offset Voltage
1
m
V/
8
C max Offset Voltage Drift
150 pA max Input Bias Current
0.2 pA/
8
C typical I
B
Drift
Low Noise
0.5
m
V p-p typical Noise, 0.1 Hz to 10 Hz
Low Power
600
m
A max Supply Current per Amplifier
Chips & MIL-STD-883B Processing Available
Available in Tape and Reel in Accordance
with EIA-481A Standard
Single Version: AD705, Dual Version: AD706
PRIMARY APPLICATIONS
Industrial/Process Controls
Weigh Scales
ECG/EKG Instrumentation
Low Frequency Active Filters
PRODUCT DESCRIPTION
The AD704 is a quad, low power bipolar op amp that has the
low input bias current of a BiFET amplifier but which offers a
significantly lower I
B
drift over temperature. It utilizes Super-
beta bipolar input transistors to achieve picoampere input bias
current levels (similar to FET input amplifiers at room tempera-
ture), while its I
B
typically only increases by 5
×
at +125
°
C
(unlike a BiFET amp, for which I
B
doubles every 10
°
C resulting
in a 1000
×
increase at +125
°
C). Furthermore the AD704
achieves 75
μ
V offset voltage and low noise characteristics of a
precision bipolar input op amp.
100
10
1
0.1
0.01
–55
+25
+125
TEMPERATURE –
°
C
T
B
TYPICAL JFET AMP
AD704T
Figure 1. Input Bias Current Over Temperature
CONNECTION DIAGRAMS
Quad Picoampere Input Current
Bipolar Op Amp
14-Pin Plastic DIP (N)
14-Pin Cerdip (Q) Packages
1
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
2
3
OUTPUT
–IN
–IN
OUTPUT
OUTPUT
–IN
–IN
OUTPUT
AD704
(TOP VIEW)
IN
+
IN
+
IN
+
IN
+
+V
S
–V
S
16-Pin SOIC
(R) Package
11
1
4
1
2
3
4
5
6
7
8
9
10
12
13
14
2
3
OUTPUT
–IN
–IN
OUTPUT
OUTPUT
–IN
–IN
OUTPUT
+V
S
–V
S
AD704
(TOP VIEW)
15
16
NC = NO CONNECT
NC
NC
IN
+
IN
+
IN
+
IN
+
20-Terminal LCC
(E) Package
3
2
1
20
19
18
17
16
15
14
9
10
O
11
N
12
O
13
–
4
5
6
7
8
+IN4
NC
–V
S
NC
+IN3
–
O
N
O
–
+IN1
NC
+V
S
NC
+IN2
–
AMP 1
AMP 2
AMP 4
AMP 3
NC = NO CONNECT
AD704
Since it has only 1/20 the input bias current of an AD OP07, the
AD704 does not require the commonly used “balancing”
resistor. Furthermore, the current noise is 1/5 that of the
AD OP07 which makes the AD704 usable with much higher
source impedances. At 1/6 the supply current (per amplifier) of
the AD OP07, the AD704 is better suited for today’s higher
density circuit boards and battery powered applications.
The AD704 is an excellent choice for use in low frequency
active filters in 12- and 14-bit data acquisition systems, in
precision instrumentation, and as a high quality integrator. The
AD704 is internally compensated for unity gain and is available
in five performance grades. The AD704J and AD704K are rated
over the commercial temperature range of 0
°
C to +70
°
C. The
AD704A and AD704B are rated over the industrial temperature
of –40
°
C to +85
°
C. The AD704T is rated over the military
temperature range of –55
°
C to +125
°
C and is available
processed to MIL-STD-883B, Rev. C.
相關PDF資料
PDF描述
AD705 Picoampere Input Current Bipolar Op Amp(輸入微微安培電流雙極性運放)
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轉換器)
AD7233 12-Bit Serial Mini-DIP DACPORT(12位電壓輸出D/A轉換器)
AD7249AN LC2MOS Dual 12-Bit Serial DACPORT
相關代理商/技術參數(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 技術:霍爾效應 極化:任意一種 感應范圍:±2.5mT 跳閘，±1.1mT 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） 供應商器件封裝:8-MSOP 標準包裝: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 技術:霍爾效應 極化:任意一種 感應范圍:±2.5mT 跳閘，±1.1mT 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） 供應商器件封裝:8-SOIC 標準包裝: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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