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參數(shù)資料
| 型號： | PGA204AU |
| 元件分類： | 測量放大器 |
| 英文描述： | Precision Gain of 5 Instrumentation Amplifier |
| 中文描述： | 5精密增益儀表放大器 |
| 文件頁數(shù)： | 13/14頁 |
| 文件大?。?/td> | 261K |
| 代理商： | PGA204AU |
13
PGA204/205
FIGURE 5. Voltage Swing of A
1
and A
2
.
Input-overload often produces an output voltage that appears
normal. For example, consider an input voltage of +20V on
one input and +40V on the other input will obviously exceed
the linear common-mode range of both input amplifiers.
Since both input amplifiers are saturated to the nearly the
same output voltage limit, the difference voltage measured
by the output amplifier will be near zero. The output of the
PGA204/205 will be near 0V even though both inputs are
overloaded.
INPUT PROTECTION
The inputs of the PGA204/205 are individually protected for
voltages up to
±
40V. For example, a condition of –40V on
one input and +40V on the other input will not cause
damage. Internal circuitry on each input provides low series
impedance under normal signal conditions. To provide
equivalent protection, series input resistors would contribute
excessive noise. If the input is overloaded, the protection
circuitry limits the input current to a safe value (approxi-
mately 1.5mA). The typical performance curve “Input Bias
Current vs Common-Mode Input Voltage” shows this input
current limit behavior. The inputs are protected even if no
power supply voltage is present.
FIGURE 6. Switch-Selected PGIA.
A
1
A
2
A
3
12
11
10
25k
25k
25k
25k
13
5
14
16
4
V+
PGA204
PGA205
Ref
V
O
Feedback
Digitally Selected
Feedback Network
1
V
O1
15
A
1
A
0
Digital
Ground
9
8
V
O2
V–
V
D
2
V
D
2
V
CM
V
CM
–G 2
D
V
CM
+G 2
D
Over-Voltage
Protection
Over-Voltage
Protection
SWITCH
POSITION
V+
47k
47k
D1, D2: IN4148, IN914, etc.
A
0
A
1
A
B
C
D
X
V
IN
–
V
IN
+
PGA204
PGA205
GAIN
A
B
C
D
1
10
100
1000
1
2
4
8
PGA204
PGA205
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PGA204BP | Precision Gain of 5 Instrumentation Amplifier |
| PGA204BU | Precision Gain of 5 Instrumentation Amplifier |
| PGA206 | Micropower single-supply CMOS Instrumentation Amplifier |
| PGA207UA | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:SP02; Number of Contacts:3; Connector Shell Size:8; Connecting Termination:Solder; Circular Shell Style:Box Mount Receptacle |
| PGA206PA | Micropower single-supply CMOS Instrumentation Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PGA204AU | 制造商:Texas Instruments 功能描述:IC SM AMP INSTRUMENT PROG GAIN |
| PGA204AU/1K | 功能描述:儀表放大器 Programmable Gain Instrumentation Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| PGA204AU/1KE4 | 功能描述:儀表放大器 Programmable Gain Instrumentation Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| PGA204AUE4 | 功能描述:儀表放大器 Programmable Gain Instrumentation Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
| PGA204AUG4 | 功能描述:儀表放大器 Programmable Gain Instrum Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補償電壓:150 V 可用增益調(diào)整: 最大輸入電阻:10 kOhms 共模抑制比（最小值）:88 dB 工作電源電壓:2.7 V to 36 V 電源電流:200 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:MSOP-8 封裝:Bulk |
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