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參數(shù)資料
| 型號(hào)： | FAN4852IMU8X |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP R-R 9MHZ DUAL LP 8MSOP |
| 標(biāo)準(zhǔn)包裝： | 4,000 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 6.2 V/µs |
| 增益帶寬積： | 9MHz |
| 電流 - 輸入偏壓： | 0.1pA |
| 電壓 - 輸入偏移： | 300µV |
| 電流 - 電源： | 900µA |
| 電流 - 輸出 / 通道： | 90mA |
| 電壓 - 電源，單路/雙路(±)： | 2.5 V ~ 5 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： | 帶卷 (TR) |
2010 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4852 Rev. 4.0.0
13
FAN48
52
—
9MHz
Low-Power
Dual
CMOS
Amplifier
Application Information
General Description
The FAN4852 amplifier includes single-supply, general-
purpose amplifiers, fabricated on a CMOS process. The
input and output are rail-to-rail and the part is unity gain
stable. The typical non-inverting circuit schematic is
shown in Figure 29.
Figure 29. Typical Non-Inverting Configuration
Input Common Mode Voltage
The common mode input range includes ground. CMRR
does not degrade when input levels are kept 1.2V below
the rail. For the best CMRR when using a VS of 5V, the
maximum input voltage should 3.8V.
Figure 30. 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 FAN4852
typically recovers in less than 500ns from an overdrive
condition. Figure 31 shows the FAN4852 amplifier in an
overdriven condition.
Figure 31. Overdrive Recovery
Driving Capacitive Loads
Figure 31 illustrates the response of the amplifier. A
small series resistance (RS) at the output, illustrated in
Figure 32, improves stability and settling performance.
RS values provided achieve maximum bandwidth with
less than 2dB of peaking. For maximum flatness, use a
larger RS. Capacitive loads larger than 500pF require
the use of RS.
Figure 32. 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
amplifier requires a 300
series resistor to drive a
100pF load.
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