參數(shù)資料
型號(hào)： INA121UA
元件分類： 測(cè)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(yè)數(shù)： 12/12頁(yè)
文件大小： 220K
代理商： INA121UA
12
INA121
INA121
R
G
/2
R
G
= 5.6k
V
O
LA
RL
RA
10k
Ref
NOTE: Due to the INA121’s current-feedback
topology, V
is approximately 0.7V less than
the common-mode input voltage. This DC offset
in this guard potential is satisfactory for many
guarding applications.
Low bias current
allows use with high
electrode impedances.
G = 10
2.8k
V
G
V
G
2.8k
1/2
OPA2131
390k
390k
1/2
OPA2131
FIGURE 12. Multiplexed-Input Data Acquisition System.
FIGURE 13. Shield Driver Circuit.
INA121
V
IN
V
IN
–
+
OPA130
511
22.1k
22.1k
Ref
V
O
For G = 100
R
= 511
// 2(22.1k
)
effective R
G
= 505
100
NOTE: Driving the shield minimizes CMR degradation
due to unequally distributed capacitance on the input
line. The shield is driven at approximately 1V below
the common-mode input voltage.
FIGURE 14. ECG Amplifier With Right-Leg Drive.
INA121
V
IN
+
–
V
IN
+
–
Channel 8
Channel 1
MPC800
MUX
ADS7816
+5V
V
REF
+In
–In
12 Bits Out
Serial
R
G
Ref
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
INA121UA 制造商:BURR-BROWN 功能描述:IC AMP INSTRUMENTATION SOIC8 121 制造商:Texas Instruments 功能描述:IC INSTRUMENTATION AMPLIFIER
INA121UA 制造商:Texas Instruments 功能描述:Instrumentation Amplifier IC
INA121UA/2K5 功能描述:儀表放大器 FET-Input Low Power Instrumentation Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補(bǔ)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
INA121UA/2K5E4 功能描述:儀表放大器 FET-Input Low Power Instrumentation Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量: 輸入補(bǔ)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
INA121UA-1 制造商:Texas Instruments 功能描述:INST AMP, +/-15V, 600KHZ, 8SOIC; No. of Amplifiers:1; Input Offset Voltage:1mV; Bandwidth:600kHz; Supply Voltage Range: 2.25V to 18V; Amplifier Case Style:SOIC; No. of Pins:8; Amplifier Output:Single Ended; CMRR:106dB; Slew ;RoHS Compliant: Yes
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