- 您现在的位置：买卖IC网 > PDF目录2159 > MCP6V31UT-E/LT (Microchip Technology)IC OPAMP SGL ZERO DRIFT SC70-5 PDF资料下载
参数资料
| 型号： | MCP6V31UT-E/LT |
| 厂商： | Microchip Technology |
| 文件页数： | 11/40页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP SGL ZERO DRIFT SC70-5 |
| 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： | 0.13 V/µs |
| 增益带宽积： | 300kHz |
| 电流 - 输入偏压： | 5pA |
| 电压 - 输入偏移： | 8µV |
| 电流 - 电源： | 23µA |
| 电流 - 输出 / 通道： | 21mA |
| 电压 - 电源，单路/双路(±)： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-TSSOP（5 引线），SC-88A，SOT-353 |
| 供应商设备封装： | SC-70-5 |
| 包装： | 标准包装 |
| 其它名称： | MCP6V31UT-E/LTDKR |
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页当前第11页第12页第13页第14页第15页第16页第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
2012 Microchip Technology Inc.
DS25127A-page 19
MCP6V31/1U
4.0
APPLICATIONS
The MCP6V31/1U family of zero-drift op amps is
manufactured using Microchip’s state of the art CMOS
process. It is designed for precision applications with
requirements for small packages and low power. Its low
supply voltage and low quiescent current make the
MCP6V31/1U devices ideal for battery-powered
applications.
4.1
Overview of Zero-Drift Operation
Figure 4-1 shows a simplified diagram of the
MCP6V31/1U zero-drift op amps. This diagram will be
used to explain how slow voltage errors are reduced in
this architecture (much better VOS, VOS/TA (TC1),
CMRR, PSRR, AOL and 1/f noise).
FIGURE 4-1:
Simplified Zero-Drift Op
Amp Functional Diagram.
4.1.1
BUILDING BLOCKS
The Main Amplifier is designed for high gain and
bandwidth, with a differential topology. Its main input
pair (+ and - pins at the top left) is used for the higher
frequency portion of the input signal. Its auxiliary input
pair (+ and - pins at the bottom left) is used for the low
frequency portion of the input signal and corrects the
op amp’s input offset voltage. Both inputs are added
together internally.
The Auxiliary Amplifier, Chopper Input Switches and
Chopper Output Switches provide a high DC gain to the
input signal. DC errors are modulated to higher
frequencies, while white noise is modulated to low
frequency.
The Low-Pass Filter reduces high frequency content,
including harmonics of the Chopping Clock.
The Output Buffer drives external loads at the VOUT pin
(VREF is an internal reference voltage).
The Oscillator runs at fOSC1 = 200 kHz. Its output is
divided by two, to produce the Chopping Clock rate of
fCHOP =100 kHz.
The internal POR part starts the part in a known good
state, protecting against power supply brown-outs.
The Digital Control block controls switching and POR
events.
4.1.2
CHOPPING ACTION
Figure 4-2 shows the amplifier connections for the first
phase of the Chopping Clock and Figure 4-3 shows
them for the second phase. Its slow voltage errors
alternate in polarity, making the average error small.
FIGURE 4-2:
First Chopping Clock Phase;
Equivalent Amplifier Diagram.
FIGURE 4-3:
Second Chopping Clock
Phase; Equivalent Amplifier Diagram.
VIN+
VIN–
Main
Buffer
VOUT
VREF
Amp.
Output
NC
Aux.
Amp.
Chopper
Input
Switches
Chopper
Output
Switches
Oscillator
Low-Pass
Filter
POR
Digital Control
VIN+
VIN–
Main
Amp.
NC
Aux.
Amp.
Low-Pass
Filter
VIN+
VIN–
Main
Amp.
NC
Aux.
Amp.
Low-Pass
Filter
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| MIC7122BMM | IC OPAMP R-R DUAL 8-MSOP |
| MIC7300YM5 TR | IC OP AMP R-R IN/OUT SOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP6XXXDM-FLTR | 功能描述:有源滤波器开发工具 Act Filter Demo BRD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 工具用于评估:MAX7408-MAX7415, MAX7418-MAX7425 截止频率:1 Hz to 15 kHz 工作电源电压:3 V, 5 V |
| MCP6XXXEV-AMP1 | 功能描述:放大器 IC 开发工具 MCP6XXX Amp Eval Brd 1 RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MCP6XXXEV-AMP2 | 功能描述:放大器 IC 开发工具 MCP6XXX Amp Eval Brd 2 RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MCP6XXXEV-AMP3 | 功能描述:放大器 IC 开发工具 MCP6XXX Amp Eval Brd 3 RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MCP6XXXEV-AMP4 | 功能描述:放大器 IC 开发工具 MCP6XXX Amp Eval Brd 4 RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
发布紧急采购，3分钟左右您将得到回复。