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| 型号： | LT6106HS5#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC AMP CURRENT SENSE TSOT23-5 |
| 标准包装： | 1 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| -3db带宽： | 200kHz |
| 电流 - 输入偏压： | 40nA |
| 电压 - 输入偏移： | 150µV |
| 电流 - 电源： | 70µA |
| 电流 - 输出 / 通道： | 1mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 36 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1320 (CN2011-ZH PDF) |
| 其它名称： | LT6106HS5#TRMPBFDKR |
LT6106
9
6106fa
APPLICATIONS INFORMATION
Output Error Due to the Amplier DC Offset
Voltage, VOS
EV
R
OUT VOS
OS
OUT
IN
()
=
The DC offset voltage of the amplier adds directly to the
value of the sense voltage, VSENSE. This is the dominant
error of the system and it limits the low end of the dynamic
range. The paragraph “Selection of External Current Sense
Resistor” provides details.
Output Error Due to the Bias Currents, IB+ and IB–
The bias current IB+ ows into the positive input of the
internal op amp. IB– ows into the negative input.
E
OUT(IBIAS) = ROUT IB
+
R
SENSE
R
IN
–I
B
–
Assuming IB+ IB– = IBIAS, and RSENSE << RIN then:
EOUT(IBIAS) –ROUT IBIAS
It is convenient to refer the error to the input:
EIN(IBIAS) –RIN IBIAS
For instance if IBIAS is 60nA and RIN is 1k, the input referred
error is 60μV. Note that in applications where RSENSE
RIN, IB+ causes a voltage offset in RSENSE that cancels the
error due to IB– and EOUT(IBIAS) 0mV. In most applica-
tions, RSENSE << RIN, the bias current error can be similarly
reduced if an external resistor RIN+ = (RIN – RSENSE) is
connected as shown in Figure 4. Under both conditions:
EIN(IBIAS) = ±RIN IOS; where IOS = IB+ – IB–
If the offset current, IOS, of the LT6106 amplier is 6nA,
the 60μV error above is reduced to 6μV.
Adding RIN+ as described will maximize the dynamic
range of the circuit. For less sensitive designs, RIN+ is
not necessary.
Output Error Due to Gain Error
The LT6106 exhibits a typical gain error of –0.25% at 1mA
output current. The primary source of gain error is due to
the nite gain to the PNP output transistor, which results in
a small percentage of the current in RIN not appearing in the
output load ROUT.
Minimum Output Voltage
The curves of the Output Voltage vs Input Sense Voltage
show the behavior of the LT6106 with low input sense volt-
ages. When VSENSE = 0V, the output voltage will always
be slightly positive, the result of input offset voltages and
of a small amount of quiescent current (0.7μA to 1.2μA)
owing through the output device. The minimum output
voltage in the Electrical Characteristics table include both
these effects.
Power Dissipation Considerations
The power dissipated by the LT6106 will cause a small
increase in the die temperature. This rise in junction tem-
perature can be calculated if the output current and the
supply current are known.
The power dissipated in the LT6106 due to the output
signal is:
POUT = (VIN– – VOUT) IOUT
Since VIN– V+, POUT (V+ – VOUT) IOUT
The power dissipated due to the quiescent supply current is:
PQ = IS (V+ – V–)
The total power dissipated is the output dissipation plus
the quiescent dissipation:
PTOTAL = POUT + PQ
The junction temperature is given by:
TJ = TA + θJA PTOTAL
At the maximum operating supply voltage of 36V and the
maximum guaranteed output current of 1mA, the total
Figure 4. Second Input R Minimizes Error Due to Input Bias Current
LT6106
ROUT
VOUT
6106 F04
RIN
–
RIN
+
V+
LOAD
RSENSE
–
+
V+
V–
OUT
RIN
+ = RIN– – RSENSE
–IN
+IN
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT6107 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Temperature High Side Current Sense Amp in SOT-23 |
| LT6107MPS5#PBF | 制造商:Linear Technology 功能描述:SP Amp Current Sense Amp Single 36V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:Bulk 制造商:Linear Technology 功能描述:AMPLIFIER, CURRENT SENSE, 200KHZ, TSOT-23-5; No. of Amplifiers:1; Input Bias Current:40nA; Input Offset Voltage:150V; Amplifier Case Style:TSOT-23; No. of Pins:5; Bandwidth:200kHz; Supply Voltage Min:2.7V; Supply Voltage Max:36V ;RoHS Compliant: Yes |
| LT6107MPS5#TRMPBF | 功能描述:IC AMP CURRENT SENSE HS TSOT23-5 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
| LT6107MPS5#TRPBF | 功能描述:IC AMP CURRENT SENSE HS TSOT23-5 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:3 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:1pA 电压 - 输入偏移:70µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:Digi-Reel® 其它名称:MAX4475AUT#TG16DKR |
| LT6107MPS5-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Temperature High Side Current Sense Amp in SOT-23 |
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