- 您现在的位置：买卖IC网 > PDF目录2159 > MCP6V11T-E/OT (Microchip Technology)IC OPAMP SGL ZERO DRIFT SOT23-5 PDF资料下载
参数资料
| 型号： | MCP6V11T-E/OT |
| 厂商： | Microchip Technology |
| 文件页数： | 17/40页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP SGL ZERO DRIFT SOT23-5 |
| 标准包装： | 1 |
| 放大器类型： | 零漂移 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.03 V/µs |
| 增益带宽积： | 80kHz |
| 电流 - 输入偏压： | 5pA |
| 电压 - 输入偏移： | 8µV |
| 电流 - 电源： | 7.5µA |
| 电流 - 输出 / 通道： | 17mA |
| 电压 - 电源，单路/双路(±)： | 1.6 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 其它名称： | MCP6V11T-E/OTDKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页
MCP6V11/1U
DS25124A-page 24
2012 Microchip Technology Inc.
Typical thermojunctions have temperature to voltage
conversion coefficients of 1 to 100 V/°C (sometimes
higher).
Microchip’s AN1258 (“Op Amp Precision Design: PCB
Layout Techniques
”) contains in-depth information on
PCB layout techniques that minimize thermojunction
effects. It also discusses other effects, such as
crosstalk, impedances, mechanical stresses and
humidity.
4.3.11.2
Crosstalk
DC crosstalk causes offsets that appear as a larger
input offset voltage. Common causes include:
Common mode noise (remote sensors)
Ground loops (current return paths)
Power supply coupling
Interference from the mains (usually 50 Hz or 60 Hz),
and other AC sources, can also affect the DC
performance. Non-linear distortion can convert these
signals to multiple tones, including a DC shift in voltage.
When the signal is sampled by an ADC, these AC
signals can also be aliased to DC, causing an apparent
shift in offset.
To reduce interference:
- Keep traces and wires as short as possible
- Use shielding
- Use ground plane (at least a star ground)
- Place the input signal source near to the DUT
- Use good PCB layout techniques
- Use a separate power supply filter (bypass
capacitors) for these zero-drift op amps
4.3.11.3
Miscellaneous Effects
Keep the resistances seen by the input pins as small
and as near to equal as possible, to minimize bias-
current-related offsets.
Make the (trace) capacitances seen by the input pins
small and equal. This is helpful in minimizing switching
glitch-induced offset voltages.
Bending a coax cable with a radius that is too small
causes a small voltage drop to appear on the center
conductor (the triboelectric effect). Make sure the
bending radius is large enough to keep the conductors
and insulation in full contact.
Mechanical stresses can make some capacitor types
(such as some ceramics) output small voltages. Use
more appropriate capacitor types in the signal path and
minimize mechanical stresses and vibration.
Humidity can cause electrochemical potential voltages
to appear in a circuit. Proper PCB cleaning helps, as
does the use of encapsulants.
4.4
Typical Applications
4.4.1
WHEATSTONE BRIDGE
Many sensors are configured as Wheatstone bridges.
Strain gauges and pressure sensors are two common
examples. These signals can be small and the
common mode noise large. Amplifier designs with high
differential gain are desirable.
Figure 4-11 shows how to interface to a Wheatstone
bridge with a minimum of components. Because the
circuit is not symmetric, the ADC input is single ended,
and there is a minimum of filtering; the CMRR is good
enough for moderate common mode noise.
FIGURE 4-11:
Simple Design.
4.4.2
RTD SENSOR
The ratiometric circuit in Figure 4-12 conditions a two-
wire RTD, for applications with a limited temperature
range. U1 acts a difference amplifier, with a low
frequency pole. The sensor’s wiring resistance (RW) is
corrected in firmware. Failure (open) of the RTD is
detected by an out-of-range voltage.
FIGURE 4-12:
RTD Sensor.
VDD
RR
100R
0.01C
ADC
VDD
0.2R
1k
U1
MCP6V11
RF
10 nF
ADC
VDD
RN
1.0 F
VDD
RW
RT
RB
RRTD
RG
100
1.00 k
4.99 k
34.8 k
2.00 M
10.0 k
U1
MCP6V11
RW
10.0 k
RF
2.00 M
10 nF
100 nF
相关PDF资料 |
PDF描述 |
|---|---|
| MCP6V27T-E/SN | IC OPAMP DUAL AUTO-ZERO 8SOIC |
| MCP6V31UT-E/LT | IC OPAMP SGL ZERO DRIFT SC70-5 |
| ME50101VX-000U-A99 | FAN BRUSHLESS 12VDC 50X50X10MM |
| MIC6211BM5 TR | IC OP AMP GEN PURPOSE SOT23-5 |
| MIC7111BM5 TR | IC OPAMP R-R I/O 1.8V SOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP6V11UT-E/LT | 功能描述:运算放大器 - 运放 Single, Zero Drift Op Amp, E Temp RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| MCP6V11UT-E/LT-CUT TAPE | 制造商:Microchip Technology 功能描述:Cut Tape 制造商:Microchip Technology 功能描述:SP Amp Zero Drift Amplifier Single R-R I/O 5.5V 5-Pin SC-70 T/R |
| MCP6V11UT-E/OT | 功能描述:运算放大器 - 运放 Single, Zero Drift Op Amp, E Temp RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| MCP6V11UT-E/OT-CUT TAPE | 制造商:Microchip Technology 功能描述:Cut Tape 制造商:Microchip Technology 功能描述:SP Amp Zero Drift Amplifier Single R-R I/O 5.5V 5-Pin SOT-23 T/R |
| MCP6V26-E/MS | 功能描述:运算放大器 - 运放 Single, Auto-Zero Op Amp, E Temp RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。