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參數(shù)資料
| 型號(hào)： | AMP04FS-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Shielding Gasket; Conductive Surface:CuNi; Gasket Style:Rectangular; Surface Resistivity/Lin:0.010"; Body Material:nickel plate over copper substrate; Length:0.138"; Mounting Type:Adhesive; Thickness:.06"; Width:0.138" |
| 中文描述： | INSTRUMENTATION AMPLIFIER, 900 uV OFFSET-MAX, 0.7 MHz BAND WIDTH, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁(yè)數(shù)： | 11/16頁(yè) |
| 文件大?。?/td> | 511K |
| 代理商： | AMP04FS-REEL7 |
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AMP04
REV. A
–11–
not interact with one another. Calibration is simple and easy
with the NULL adjusted first, followed by SPAN adjust. The
entire circuit can be remotely placed, and powered from the
4-20 mA 2-wire loop.
4-20 mA Loop Receiver
At the receiving end of a 4-20 mA loop, the AMP04 makes a
convenient differential receiver to convert the current back to a
usable voltage (Figure 13). The 4-20 mA signal current passes
through a 100
sense resistor. The voltage drop is differentially
amplified by the AMP04. The 4 mA offset is removed by the
offset correction circuit.
7
1
6
5
4
2
3
8
AMP-04
6
100k
0.15
μ
F
4–20mA
TRANS-
MITTER
POWER
SUPPLY
+
–
2
3
+
–
100
1%
1k
1k
WIRE RE-
SISTANCE
IN4002
–0.400V
OP-177
AD589
10k
27k
–15V
+15V
V
OUT
0–1.6V FS
–15V
4–20mA
4–20mA
+
–
Figure 13. 4-to-20 mA Line Receiver
Low Power, Pulsed Load-Cell Amplifier
Figure 14 shows a 350
load cell that is pulsed with a low duty
cycle to conserve power. The OP295’s rail-to-rail output capa-
bility allows a maximum voltage of 10 volts to be applied to the
bridge. The bridge voltage is selectively pulsed on when a mea-
surement is made. A negative-going pulse lasting 200 ms should
be applied to the MEASURE input. The long pulse width is
necessary to allow ample settling time for the long time constant
of the low-pass filter around the AMP04. A much faster settling
time can be achieved by omitting the filter capacitor.
7
1
6
5
4
2
3
8
AMP-04
0.22
μ
F
+12V
1/2
OP-295
REF-01
GND
OUT
IN
+12V
330
1k
10k
10V
50k
2N3904
V
OUT
1N4148
350
MEASURE
Figure 14. Pulsed Load Cell Bridge Amplifier
Single Supply Programmable Gain Instrumentation Amplifier
Combining with the single supply ADG221 quad analog switch,
the AMP04 makes a useful programmable gain amplifier that
can handle input and output signals at zero volts. Figure 15
shows the implementation. A logic low input to any of the gain
control ports will cause the gain to change by shorting a gain-
set resistor across AMP04’s Pins 1 and 8. Trimming is required
at higher gains to improve accuracy because the switch ON-
resistance becomes a more significant part of the gain-set
resistance. The gain of 500 setting has two switches connected
in parallel to reduce the switch resistance.
1
2
3
4
8
7
6
5
AMP-04
V–
REF
V+
–
INPUT
+
V
OUT
+5V
TO +30V
R
G
R
G
0.1
μ
F
0.22
μ
F
100k
10.9k
3
14
715
200
200
6
11
4
5
ADG221
+5V TO +30V
13
10
9
7
8
15
16
2
1
12
+
10
μ
F
0.1
μ
F
GAIN OF 500
WR
GAIN OF 100
GAIN OF 10
G
Figure 15. Single Supply Programmable Gain Instrumen-
tation Amplifier
The switch ON resistance is lower if the supply voltage is
12 volts or higher. Additionally the overall amplifier’s tempera-
ture coefficient also improves with higher supply voltage.
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| AMP04FSZ-RL | 功能描述:IC AMP INST PREC 30MA LP 8SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:150 系列:- 放大器類型:音頻 電路數(shù):2 輸出類型:- 轉(zhuǎn)換速率:5 V/µs 增益帶寬積:12MHz -3db帶寬:- 電流 - 輸入偏壓:100nA 電壓 - 輸入偏移:500µV 電流 - 電源:6mA 電流 - 輸出 / 通道:50mA 電壓 - 電源，單路/雙路(±):4 V ~ 32 V，±2 V ~ 16 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
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