- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385574 > MCP6144 (Microchip Technology Inc.) 600 nA, Non-Unity Gain Rail-to-Rail Input/Output Op Amps PDF資料下載
參數(shù)資料
| 型號： | MCP6144 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 600 nA, Non-Unity Gain Rail-to-Rail Input/Output Op Amps |
| 中文描述： | 600 nA的，非統(tǒng)一增益軌到軌輸入/輸出運(yùn)算放大器 |
| 文件頁數(shù)： | 10/32頁 |
| 文件大?。?/td> | 624K |
| 代理商： | MCP6144 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
MCP6141/2/3/4
21668A-page 10
2002 Microchip Technology Inc.
3.0
APPLICATIONS INFORMATION
The MCP6141/2/3/4 family of operational amplifiers
are fabricated on Microchip’s state-of-the-art CMOS
process. They are stable for noise gain of 10 V/V or
higher. Microchip also produces a unity gain stable
product, the MCP6041/2/3/4 family, which has similar
specifications. The MCP6041/2/3/4 family has a band-
width of 1.4 kHz at a noise gain of 10 V/V, while the
MCP6141/2/3/4 family has a bandwidth of 10 kHz at a
noise gain of 10 V/V. These devices are suitable for a
wide range of applications requiring very low power
consumption. With these op amps, the power supply
pin needs to be bypassed with a 0.1 μF capacitor.
3.1
Rail-to-Rail Input
The input stage of these devices uses two differential
input stages in parallel; one operates at low V
CM
(com-
mon mode input voltage) and the other at high V
CM
.
With this topology, the MCP6141/2/3/4 family operates
with V
CM
up to 300 mV past either supply rail. The Input
Offset Voltage is measured at both V
CM
= V
SS
- 0.3V
and V
DD
+ 0.3V to ensure proper operation.
3.2
Output Loads and Battery Life
The MCP6141/2/3/4 op amp family has low quiescent
current, which supports battery-powered applications.
There is minimal quiescent current glitch when chip
select (CS) is raised or lowered. This prevents exces-
sive current draw and reduced battery life when the
part is turned off or on.
Heavy resistive loads at the output can cause exces-
sive battery drain. Driving a DC voltage of 2.5V across
a 100 k
load resistor will cause the supply current to
increase by 25 μA, depleting the battery 43 times as
fast as I
Q
(0.6 μA typ) alone.
High frequency signals (fast edge rate) across capaci-
tive loads will also significantly increase supply current.
For instance, a 0.1 μF capacitor at the output presents
an AC impedance of 15.9 k
(1/2
π
fC) to a 100 Hz
sinewave. It can be shown that the average power
drawn from the battery by a 5.0 V
p-p
sinewave
(1.77 Vrms) under these conditions is:
EQUATION
This will drain the battery 18 times as fast as I
Q
alone.
3.3
Rail-to-Rail Output
The MCP6141/2/3/4 family Maximum Output Voltage
Swing defines the maximum swing possible under a
particular output load. According to the specification
table, the output can reach up to 10 mV of either supply
rail with a 50 k
load.
3.4
Input Voltage and Phase Reversal
The MCP6141/2/3/4 op amp family uses CMOS tran-
sistors at the input. It is designed to prevent phase
reversal when the input pins exceed the supply volt-
ages. Figure 2-33 shows an input voltage exceeding
both supplies without output phase reversal.
The maximum operating V
CM
that can be applied to the
inputs is V
SS
-0.3V and V
DD
+ 0.3V. Voltage on the
input that exceeds this absolute maximum rating can
cause excessive current to flow in or out of the input
pins. Current beyond ±2 mA can cause possible reli-
ability problems. Applications that exceed this rating
must be externally limited with an input resistor, as
shown in Figure 3-1.
FIGURE 3-1:
should be used to limit excessive input current if
the inputs exceed the absolute maximum
specification.
An input resistor, R
IN
,
3.5
Stability
The MCP6141/2/3/4 op amp family is designed to give
high bandwidth and faster slew rate for circuits with
high noise (G
n
) or signal gain. The related unity-gain
stable MCP6041/2/3/4 op amp family has lower AC
performance, but it is preferable for low noise gain
applications.
Noise gain is defined to be the gain from a voltage
source at the non-inverting input to the output when all
other voltage sources are zeroed (shorted out). Noise
gain is independent of signal gain and depends only on
components in the feedback loop.
P
SUPPLY
V
DD
5V
(
V
SS
–
(
(
)
I
Q
+
V
L p
p
–
(
)
+
fC
L
100Hz 0.1
μ
F
(
)
=
=
3.0
μ
W
50
μ
W
+
=
)
0.6
μ
A
5.0V
p
p
–
)
R
IN
V
---------–
Minimum expected V
2 mA
)
≥
R
IN
Maximum expected V
------------------------------------------------------------------------------
(
)
V
–
2 mA
≥
V
IN
R
IN
V
OUT
MCP614X
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCP616 | 2.3V TO 5.5V MICROPOWER BI - CMOS OP AMPS |
| MCP617 | 2.3V TO 5.5V MICROPOWER BI - CMOS OP AMPS |
| MCP618 | 2.3V TO 5.5V MICROPOWER BI - CMOS OP AMPS |
| MCP619 | 2.3V TO 5.5V MICROPOWER BI - CMOS OP AMPS |
| MCP6281 | 450 UA, 5 MHz Rail-to-Rail Op Amp |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP6144-E/P | 功能描述:運(yùn)算放大器 - 運(yùn)放 G>10 Qd 1.6V 100kHz RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MCP6144-E/SL | 功能描述:運(yùn)算放大器 - 運(yùn)放 G>10 Qd 1.6V 100kHz RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MCP6144-E/ST | 功能描述:運(yùn)算放大器 - 運(yùn)放 G>10 Qd 1.6V 100kHz RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MCP6144-I/P | 功能描述:運(yùn)算放大器 - 運(yùn)放 G>10 Qd 1.6V 100kHz RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MCP6144-I/P | 制造商:Microchip Technology Inc 功能描述:IC OP-AMP QUAD LOW-POWER RRI/O |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。