MCP6004-I/OT

更新时间： 2024-02-05 03:26:34

品牌	Logo	应用领域
美国微芯 - MICROCHIP		运算放大器
页数	文件大小	规格书
28页	455K
描述
1 MHz, Low-Power Op Amp

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中文翻译

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技术参数
数据手册

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MCP6004-I/OT 技术参数

生命周期：	Active	包装说明：	SOP,
Reach Compliance Code：	compliant	风险等级：	5.59
放大器类型：	OPERATIONAL AMPLIFIER	标称共模抑制比：	76 dB
最大输入失调电压：	4500 µV	JESD-30 代码：	R-PDSO-G8
长度：	4.9 mm	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	座面最大高度：	1.75 mm
标称压摆率：	0.6 V/us	子类别：	Operational Amplifier
供电电压上限：	7 V	标称供电电压 (Vsup)：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
标称均一增益带宽：	1000 kHz	宽度：	3.9 mm
Base Number Matches：	1

MCP6004-I/OT 数据手册

MCP6001/2/4

4.0

APPLICATION INFORMATION

–

The MCP6001/2/4 family of op amps is manufactured

using Microchip’s state-of-the-art CMOS process and

is specifically designed for low-cost, low-power and

general-purpose applications. The low supply voltage,

low quiescent current and wide bandwidth makes the

MCP6001/2/4 ideal for battery-powered applications.

This device has high phase margin, which makes it

stable for larger capacitive load applications.

V_OUT

R_IN

MCP600X

V_IN

(Maximum expected V_IN) – V_DD

------------------------------------------------------------------------------

2 mA

R_IN

≥

V_SS– (Minimum expected V_IN

)

4.1

Rail-to-Rail Input

---------------------------------------------------------------------------

R_IN

≥

2 mA

The MCP6001/2/4 op amps are designed to prevent

phase reversal when the input pins exceed the supply

voltages. Figure 4-1 shows the input voltage exceeding

the supply voltage without any phase reversal.

FIGURE 4-2:

Resistor (R_IN).

Input Current Limiting

4.2

Rail-to-Rail Output

The output voltage range of the MCP6001/2/4 op amps

is V_DD– 25 mV (min.) and V_SS+ 25 mV (max.) when

R_L= 10 kΩ is connected to V_DD/2 and V_DD= 5.5V.

Refer to Figure 2-14 for more information.

V_IN

V_DD= 5.0V

G = +2 V/V

V_OUT

4.3

Capacitive Loads

Driving large capacitive loads can cause stability prob-

lems for voltage feedback op amps. As the load capac-

itance increases, the feedback loop’s phase margin

decreases and the closed-loop bandwidth is reduced.

This produces gain peaking in the frequency response,

with overshoot and ringing in the step response. While

a unity-gain buffer (G = +1) is the most sensitive to

capacitive loads, all gains show the same general

behavior.

0.E+00

1.E-05

2.E-05

3.E-05

4.E-05

5.E-05

6.E-05

7.E-05

8.E-05

9.E-05

1.E-04

-1

Time (10 µs/div)

FIGURE 4-1:

Phase Reversal.

The MCP6001/2/4 Show No

The input stage of the MCP6001/2/4 op amps use two

differential input stages in parallel. One operates at a

low common mode input voltage (V_CM), while the other

operates at a high V_CM. With this topology, the device

operates with a V_CMup to 300 mV above V_DDand

300 mV below V_SS. The input offset voltage is

measured at V_CM= V_SS– 300 mV and V_DD+ 300 mV

to ensure proper operation.

When driving large capacitive loads with these op

amps (e.g., > 100 pF when G = +1), a small series

resistor at the output (R_ISOin Figure 4-3) improves the

feedback loop’s phase margin (stability) by making the

output load resistive at higher frequencies. The band-

width will be generally lower than the bandwidth with no

capacitance load.

Input voltages that exceed the input voltage range

(V_SS– 0.3V to V_DD+ 0.3V at 25°C) can cause

excessive current to flow into or out of the input pins,

while current beyond ±2 mA can cause reliability

problems. Applications that exceed this rating must be

externally limited with a resistor, as shown in Figure 4-2.

–

R_ISO

V_OUT

MCP600X

V_IN

C_L

FIGURE 4-3:

Output resistor, R_ISO

stabilizes large capacitive loads.

DS21733F-page 8

1...5 6 789 10 11...28

中文翻译

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