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參數(shù)資料
| 型號(hào)： | FAN4274IMU8X |
| 廠商： | Fairchild Semiconductor |
| 文件頁(yè)數(shù)： | 12/13頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP SINGLE R-R I/O 8MSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 放大器類型： | 電壓反饋 |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 3 V/µs |
| 增益帶寬積： | 3.7MHz |
| -3db帶寬： | 3.7MHz |
| 電流 - 輸入偏壓： | 5pA |
| 電壓 - 輸入偏移： | 8000µV |
| 電流 - 電源： | 200µA |
| 電流 - 輸出 / 通道： | 33mA |
| 電壓 - 電源，單路/雙路(±)： | 2.3 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | FAN4274IMU8XFSDKR |
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2004 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4174/FAN4274 Rev. 1.0.9
8
FAN4174
/
FAN4274
—
Single
a
nd
Dual,
Rail-to
-Rail
I/O,
CMOS
Amplifier
Application Information
General Description
The FAN4174 amplifier includes single-supply, general-
purpose, voltage-feedback amplifiers, fabricated on a bi-
CMOS process. The family features a rail-to-rail input
and output and is unity gain stable. The typical non-
inverting circuit schematic is shown in Figure 21.
Figure 21. Typical Non-inverting Configuration
Input Common Mode Voltage
The common mode input range extends to 300 mV
below ground and to 100 mV above VS in single supply
operation. Exceeding these values does not cause
phase reversal; however, if the input voltage exceeds
the rails by more than 0.5 V, the input ESD devices
begin to conduct. The output stays at the rail during this
overdrive condition. If the absolute maximum input VIN
(700 mV beyond either rail) is exceeded, externally limit
the input current to ±5 mA, as shown in Figure 22.
Figure 22. Circuit for Input Current Protection
Power Dissipation
The maximum internal power dissipation allowed is
directly related to the maximum junction temperature. If
the maximum junction temperature exceeds 150°C,
performance degradation occurs. If the maximum
junction temperature exceeds 150°C for an extended
time, device failure may occur.
Overdrive Recovery
Overdrive of an amplifier occurs when the output and/or
input ranges are exceeded. The recovery time varies
based on whether the input or output is overdriven and
by how much the range is exceeded. The FAN4174
typically recovers in less than 500 ns from an overdrive
condition. Figure 23 shows the FAN4174 amplifier in an
overdriven condition.
Figure 23. Overdrive Recovery
Driving Capacitive Loads
Figure 9 illustrates the response of the FAN4174
amplifier. A small series resistance (RS) at the output of
the amplifier, illustrated in Figure 24, improves stability
and settling performance. RS values in Figure 9 achieve
maximum bandwidth with less than 2 dB of peaking. For
maximum flatness, use a larger RS. Capacitive loads
larger than 500 pF require the use of RS.
Figure 24. Typical Topology for Driving a
Capacitive Load
Driving a capacitive load introduces phase-lag into the
output signal, which reduces phase margin in the
amplifier. The unity gain follower is the most sensitive
configuration. In a unity gain follower configuration, the
FAN4174 amplifier requires a 300
series resistor to
drive a 100 pF load.
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