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參數資料
| 型號： | AMP02AZ |
| 元件分類： | 測量放大器 |
| 英文描述： | High Accuracy 8-Pin Instrumentation Amplifier(266.16 k) |
| 中文描述： | 高精度8引腳儀表放大器（266.16十一） |
| 文件頁數： | 9/12頁 |
| 文件大小： | 266K |
| 代理商： | AMP02AZ |
AMP02
–9–
REV. D
Figure 27. Triple Op Amp Topology of the AMP02
GROUNDING
T he majority of instruments and data acquisition systems the
separate grounds for analog and digital signals. Analog ground
may also be divided into two or more grounds which will be tied
together at one point, usually the analog power-supply ground.
In addition, the digital and analog grounds may be joined, nor-
mally at the analog ground pin on the A to D converter. Follow
this basic practice is essential for good circuit performance.
Mixing grounds causes interactions between digital circuits and
the analog signals. Since the ground returns have finite resis-
tance and inductance, hundreds of millivolts can be develop be-
tween the system ground and the data acquisition components.
Using separate ground returns minimizes the current flow in the
sensitive analog return path to the system ground point. Conse-
quently, noisy ground currents from logic gates do interact with
the analog signals.
Inevitably, two or more circuits will be joined together with their
grounds at differential potentials. In these situations, the differ-
ential input of an instrumentation amplifier, with its high CMR,
can accurately transfer analog information from one circuit to
another.
SE NSE AND RE FE RE NCE T E RMINALS
T he sense terminal completes the feedback path for the instru-
mentation amplifier output stage and is internally connected
directly to the output. For SOL devices, connect the sense
terminal to the output. T he output signal is specified with re-
spect to the reference terminal, which is normally connected to
analog ground. T he reference may also be used for offset correc-
tion level shifting. A reference source resistance will reduce the
common-mode rejection by the ratio of 25 k
/R
REF
. If the refer-
ence source resistance is 1
, then the CMR will be reduced
88 dB (25 k
/1
= 88 dB).
Figure 27 shows the triple op amp configuration of the AMP02.
With all instrumentation amplifiers of this type, it is critical not
to exceed the dynamic range of the input amplifiers. T he ampli-
fied differential input signal and the input common-mode volt-
age must not force the amplifier’s output voltage beyond
±
12 V
(V
S
=
±
15 V) or nonlinear operation will result.
T he input stage amplifier’s output voltages at V, and V
2
equals:
2
V
1
=
± 1
+
2
R
R
G
V
D
+
V
CM
=
±
GV
D
2
+
V
CM
V
2
=
1
+
2
R
R
G
V
D
2
+
V
CM
=
GV
D
2
+
V
CM
where
V
D
= Differential input voltage
= (+IN) – (–IN)
V
CM
= Common-mode input voltage
G
= Gain of instrumentation amplifier
If V
1
and V
2
can equal
±
12 V maximum, then the
common-mode input voltage range is:
CMVR =
±
12
V
±
GV
D
2
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相關代理商/技術參數 |
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|---|---|
| AMP-02AZ/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Instrumentation Amp， Resistor-Programmable |
| AMP02AZ/883C | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Accuracy 8-Pin Instrumentation Amplifier |
| AMP02E | 制造商:Analog Devices 功能描述:02E |
| AMP02EP | 功能描述:IC AMP INST PREC LDRIFT 8DIP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數:1 輸出類型:- 轉換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:8-SOIC 包裝:帶卷 (TR) |
| AMP02EPZ | 功能描述:IC AMP INST PREC LDRIFT 8DIP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1 系列:- 放大器類型:通用 電路數:4 輸出類型:滿擺幅 轉換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
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