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參數(shù)資料
| 型號： | AD706 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Dual Picoampere Input Current Bipolar Op Amp(輸入微微安培電流雙極性雙運(yùn)放) |
| 中文描述： | 雙Picoampere輸入電流雙極運(yùn)算放大器（輸入微微安培電流雙極性雙運(yùn)放） |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 251K |
| 代理商： | AD706 |
AD706
REV. C
–7–
Figure 24 shows an in-amp circuit that has the obvious advan-
tage of requiring only one AD706, rather than three op amps,
with subsequent savings in cost and power consumption. T he
transfer function of this circuit (without R
G
) is:
V
OUT
=
(
V
IN
#1
V
IN
#2
) 1
+
R
4
R
3
for R1 = R4 and R2 = R3
Input resistance is high, thus permitting the signal source to
have an unbalanced output impedance.
+V
S
0.1
m
F
1k
V
+
–
A1
AD706
1/2
R
P
*
1k
V
49.9k
V
R2
R3
R4
V
IN#1
R
G
(OPTIONAL)
R1
49.9k
V
A2
+
–
0.1
m
F
AD706
1/2
OUTPUT
*OPTIONAL INPUT PROTECTION RESISTOR FOR GAINS GREATER
THAN 100 OR INPUT VOLTAGES EXCEEDING THE SUPPLY VOLTAGE.
V
= (V
– V
) (1+R3
FOR R1 = R4, R2 = R3
2R4
R
G
–V
S
R
P
*
V
IN#2
3
2
8
1
5
6
7
4
Figure 24. A Two Op-Amp Instrumentation Amplifier
Furthermore, the circuit gain may be fine trimmed using an
optional trim resistor, R
G
. Like the three op-amp circuit, CMR
Figure 23a. Unity Gain Inverter Connection
Figure 23b. Unity Gain Inverter Large
Signal Pulse Response, C
L
= 1,000 pF
Figure 23c. Unity Gain Inverter Small
Signal Pulse Response, C
L
= 100 pF
Figure 23d. Unity Gain Inverter Small
Signal Pulse Response, C
L
= 1000 pF
increases with gain, once initial trimming is accomplished—but
CMR is still dependent upon the ratio matching of Resistors R1
through R4. Resistor values for this circuit, using the optional
gain resistor, R
G
, can be calculated using:
R
1
=
R
4
=
49.9
k
R
2
=
R
3
=
49.9
k
0.9
G
1
R
G
=
99.8
k
0.06
G
where G = Desired Circuit Gain
T able I provides practical 1% resistance values. (Note that
without resistor R
G
, R2 and R3 = 49.9 k
/G–1.)
T able I. Operating Gains of Amplifiers A1 and A2 and
Practical 1% Resistor Values for the Circuit of Figure 24
Circuit Gain
Gain of A1 Gain of A2
R2, R3
499 k
150 k
100 k
49.9 k
5.49 k
499
49.9
R1, R4
49.9 k
49.9 k
49.9 k
49.9 k
49.9 k
49.9 k
49.9 k
1.10
1.33
1.50
2.00
10.1
101.0
1001
11.00
4.01
3.00
2.00
1.11
1.01
1.001
1.10
1.33
1.50
2.00
10.10
101.0
1001
For a much more comprehensive discussion of in-amp applica-
tions, refer to the
Instrumentation Amplifier Applications Guide
—
available free from Analog Devices, Inc.
10k
V
+
AD706
+
0.1μF
8
4
V
IN
V
OUT
–
+V
S
10k
V
C
L
1/2
0.1
m
F
R
L
2.5k
V
SQUARE
WAVE
INPUT
–V
S
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD706_02 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual Picoampere Input Current Bipolar Op Amp |
| AD706_03 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual Picoampere Input Current Bipolar Op Amp |
| AD706-00E | 功能描述:SENSOR MAG SW 80G 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:±10mT 跳閘，±6.5mT 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 |
| AD706-02E | 功能描述:SENSOR MAG SW 80G 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:±10mT 跳閘，±6.5mT 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 |
| AD706AN | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual Picoampere Input Current Bipolar Op Amp |
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