參數(shù)資料
型號： ISO102
英文描述： SIGNAL ISOLATION BUFFER AMPLIFIERS
中文描述： 信號隔離緩沖放大器
文件頁數(shù)： 15/15頁
文件大小： 230K
代理商： ISO102
15
ISO102/106
The Errors of the Op Amp at 25
°
C (Referred to Input, RTI)
V
E (OPA)
= V
D
1 – 1 + 1 + V
OS
(1 + R
1
/R
F
) + I
B
R
1
+ P.S.R. + Noise
{
β
A
VOL
V
E (OPA)
= Total Op Amp Error (RTI)
V
D
= Differential Voltage (Full Scale) Across Shunt
{
β
A
1 – 1 + 1 = Gain Error Due to Finite Open Loop Gain
β
= Feedback Factor
A
VOL
= Open Loop Gain at Signal Frequency
V
OS
= Input Offset Voltage
I
B
= Input Bias Current
P.S.R. = Power Supply Rejection (
μ
V/V) [Assuming a 5% change with
±
15V supplies. Total error is twice that due to one supply.]
Noise = 5nV/ Hz (for 1k
source resistance and 1kHz bandwidth)
ERROR
(OPA)
(RTI)
GAIN ERROR
OFFSET
P.S.R.
NOISE
V
E (OPA)
=
50mV 1 – 1 + 1
{
0.025mV (1 + 1/200) + 40
x
10
–9
x
10
3
}
(20
μ
V/V
x
0.75V
x
2)
{5nV
√
120 (nVrms)}
=
=
0.01mV
0.02%
(0.0251mV + 0.04mV)
(0.05% + 0.08%)
+
+
0.03mV
0.06%
+
+
0.055
x
10
–3
mVrms
0.00011%
Error as % of FSR
After Nulling
+
=
=
=
=
0.01mV
0.10mV
0.02%
+
(0mV + 0mV)
+
0.03mV
+
0.055
x
10
–3
mVrms
Error as % of FSR*
+
(0% + 0%)
+
0.06%
+
0.00011%
0.08% of 50mV
*FSR = Full-Scale Range. 50mV at input to op amp, or 10V at input (and output) of ISO amp.
The Errors of the Iso Amp at 25
°
C (RTI)
V
E (ISO)
= 1/200 (V
ISO
/IMR + V
OS
+ G.E. + Nonlinearity + P.S.R. + Noise)
V
E (ISO)
= Total ISO Amp Error
IMR = Isolation Mode Rejection
V
OS
= Input Offset Voltage
V
ISO
= V
IMV
= Isolation Voltage = Isolation Mode Voltage
G.E. = Gain Error (% of FSR)
Nonlinearity = Peak-to-peak deviation of output voltage from best-fit straight line. It is expressed as ratio based on full-scale range.
P.S.R. = Change in V
OS
/10V
x
Supply Change
Noise = Spectral noise density
x
√
bandwidth. It is recommended that bandwidth be limited to twice maximum signal bandwidth for optimum dynamic range.
ERROR
(ISO)
(RTI)
IMR
V
OS
G.E.
NONLINEARITY
P.S.R.
NOISE
V
E (ISO)
= 1/200
{
500VDC/140dB
=
1/200
{
0.05mV
0.0005%
+
+
+
70mV
70mV
0.7%
+ 20V
x
0.25/100 + 0.003/100
x
20V
+
50mV
+
0.5%
1.4mV
x
0.75V
x
2 + 16
μ
V
√
120 (rms)
}
2.1mV
+
0.021%
+
+
+
0.6mV
0.006%
+
+
0.175mVrms
}
0.00175%
Error as % of FSR =
After Nulling
V
E (ISO)
=
=
=
1/200
{
0.05mV
1/200 (3.0mV)
0.03mV
0.0005%
0.03% of 50mV
+
0mV
+
0mV
+
0.6mV
+
2.1mV
+
0.175mVrms
}
Error as % of FSR =
+
0%
+
0%
+
0.006%
+
0.021%
+
0.00175%
=
Total Error
=
=
=
=
V
E (OPA)
0.10mV
+
+
+
V
E (ISO)
0.03mV
0.03% of 50mV
0.08% of 50mV
0.11% of 50mV
10
6
/200
FIGURE 17. Op Amp and Iso Amp Error Analysis.
1
1
1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ISO102/ISO106 制造商:BB 制造商全稱:BB 功能描述:ISO102. ISO106 - SIGNAL ISOLATION BUFFER AMPLIFIERS
ISO102B 功能描述:隔離放大器 Wide BW Std Herm Sig Iso Buffer Amp RoHS:否 制造商:Texas Instruments 輸入補償電壓:1.5 mV 共模抑制比（最小值）:95 dB 帶寬:60 KHz 工作電源電壓:3.3 V 電源電流:8 mA 工作溫度范圍:- 40 C to + 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOP-8 封裝:Tube
ISO103 功能描述:特殊用途放大器 Low-Cost Internally Pwrd Iso Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
ISO103 制造商:Texas Instruments 功能描述:IC AMP ISOLATION DIP24 103
ISO103B 功能描述:特殊用途放大器 Low-Cost Internally Pwrd Iso Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel
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