參數(shù)資料
型號(hào): MCP6H04T-E/SL
廠商: Microchip Technology
文件頁數(shù): 13/46頁
文件大?。?/td> 0K
描述: IC OPAMP QUAD16V 1.2MHZ 14SOIC
標(biāo)準(zhǔn)包裝: 2,600
放大器類型: 通用
電路數(shù): 4
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 0.8 V/µs
增益帶寬積: 1.2MHz
電流 - 輸入偏壓: 10pA
電壓 - 輸入偏移: 700µV
電流 - 電源: 135µA
電流 - 輸出 / 通道: 50mA
電壓 - 電源,單路/雙路(±): 3.5 V ~ 16 V,±1.75 V ~ 8 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 14-SOICN
包裝: 帶卷 (TR)
MCP6H01/2/4
DS22243D-page 20
2010-2011 Microchip Technology Inc.
4.7.2
TWO OP AMP INSTRUMENTATION
AMPLIFIER
The MCP6H01/2/4 op amps are well suited for
conditioning
sensor
signals
in
battery-powered
applications.
shows
a
two
op
amp
instrumentation amplifier using the MCP6H02, which
works well for applications requiring rejection of
common mode noise at higher gains.
To ensure proper operation, the op amp common mode
input voltage must be kept within the allowed range.
The reference voltage (VREF) is supplied by a low-
impedance source. In single-supply applications, VREF
is typically VDD/2.
FIGURE 4-9:
Two Op Amp
Instrumentation Amplifier.
To obtain the best CMRR possible, and not limit the
performance by the resistor tolerances, set a high gain
with the RG resistor.
4.7.3
PHOTODETECTOR AMPLIFIER
The MCP6H01/2/4 op amps can be used to easily
convert the signal from a sensor that produces an
output current (such as a photo diode) into voltage (a
trans-impedance amplifier). This is implemented with a
single resistor (R2) in the feedback loop of the
amplifiers shown in Figure 4-10. The optional capacitor
(C2) sometimes provides stability for these circuits.
A photodiode configured in Photovoltaic mode has a
zero voltage potential placed across it. In this mode,
the light sensitivity and linearity is maximized, making it
best suited for precision applications. The key amplifier
specifications for this application are: low input bias
current, common mode input voltage range (including
ground), and rail-to-rail output.
FIGURE 4-10:
Photodetector Amplifier.
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
MCP6H02
MCP6H02
D1
Light
VOUT
VDD
R2
C2
ID1
VOUT = ID1*R2
+
MCP6H01
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