参数资料
型号: MCP6442T-E/MS
厂商: Microchip Technology
文件页数: 8/46页
文件大小: 0K
描述: IC OPAMP DUAL 1.6V 9KHZ 8MSOP
标准包装: 2,500
放大器类型: 通用
电路数: 2
输出类型: 满摆幅
转换速率: 0.003 V/µs
增益带宽积: 9kHz
电流 - 输入偏压: 1pA
电压 - 输入偏移: 4500µV
电流 - 电源: 0.45µA
电流 - 输出 / 通道: 22mA
电压 - 电源,单路/双路(±): 1.4 V ~ 6 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 带卷 (TR)
MCP6441/2/4
DS22257C-page 16
2010-2012 Microchip Technology Inc.
4.6.2
PRECISION HALF-WAVE
RECTIFIER
The precision half-wave rectifier, which is also known
as a super diode, is a configuration obtained with an
operational amplifier in order to have a circuit behaving
like an ideal diode and rectifier. It effectively cancels the
forward voltage drop of the diode in such a way that
very low level signals can still be rectified, with minimal
error. This can be useful for high-precision signal
processing. The MCP6441/2/4 op amp has high input
impedance, low input bias current and rail-to-rail
input/output, which makes this device suitable for
precision rectifier applications.
Figure 4-8 shows a precision half-wave rectifier and its
transfer characteristic. The rectifier’s input impedance
is determined by the input resistor R1. To avoid the
loading effect, it must be driven from a low-impedance
source.
When VIN is greater than zero, D1 is OFF, D2 is ON, and
VOUT is zero. When VIN is less than zero, D1 is ON, D2
is OFF, and VOUT is the VIN with an amplification of
-R2/R1.
The rectifier circuit shown in Figure 4-8 has the benefit
that the op amp never goes in saturation, so the only
thing
affecting
its
frequency
response
is
the
amplification and the gain bandwidth product.
.
FIGURE 4-8:
Precision Half-Wave
Rectifier.
4.6.3
INSTRUMENTATION AMPLIFIER
The MCP6441/2/4 op amp is well suited for condition-
ing sensor signals in battery-powered applications.
Figure 4-9 shows a two op amp instrumentation
amplifier, using the MCP6441/2/4 device, that works
well for applications requiring rejection of Common
Mode noise at higher gains. The reference voltage
(VREF) is supplied by a low-impedance source. In sin-
gle supply applications, VREF is typically VDD/2.
FIGURE 4-9:
Two Op Amp
Instrumentation Amplifier.
VOUT
R2
D1
D2
R1
VIN
VOUT
VIN
-R2/R1
Transfer Characteristic
Precision Half-Wave Rectifier
MCP6441
V
OUT
V
1
V
2
() 1
R
1
R
2
------
2R
1
R
G
---------
++
V
REF
+
=
VREF R1
R2
R1
VOUT
RG
V2
V1
1/2 MCP6442
相关PDF资料
PDF描述
RC0201JR-0711KL RES 11K OHM 1/20W 5% 0201 SMD
MCP6S91-E/P IC PGA 1CH R-R I/O SPI 8DIP
67274-010 VERTICAL GUIDE PIN SLOTT-ED HDR
RC0201JR-0747RL RES 47 OHM 1/20W 5% 0201 SMD
LT2079ACS#TRPBF IC OPAMP MICROPOWER QUAD 14SOIC
相关代理商/技术参数
参数描述
MCP6444-E/SL 功能描述:运算放大器 - 运放 450 nA, 9 kHz Op Amp 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
MCP6444-E/SL 制造商:Microchip Technology Inc 功能描述:; Peak Reflow Compatible (260 C):Yes; Le 制造商:Microchip Technology Inc 功能描述:IC, OP-AMP
MCP6444-E/ST 功能描述:运算放大器 - 运放 450 nA, 9 kHz Op Amp 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
MCP6444-E/ST 制造商:Microchip Technology Inc 功能描述:; Peak Reflow Compatible (260 C):Yes; Le 制造商:Microchip Technology Inc 功能描述:IC, OP-AMP
MCP6444T-E/SL 功能描述:运算放大器 - 运放 450 nA, 9 kHz Op Amp 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