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參數(shù)資料
| 型號(hào)： | 27L2AI |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LinCMOSE PRECISION DUAL OPERATIONAL AMPLIFIERS |
| 中文描述： | LinCMOSE精密雙運(yùn)算放大器 |
| 文件頁數(shù)： | 26/33頁 |
| 文件大?。?/td> | 538K |
| 代理商： | 27L2AI |
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TLC27L2, TLC27L2A, TLC27L2B, TLC27L7
LinCMOS
PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS052B – OCTOBER 1987 – REVISED AUGUST 1994
26
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
single-supply operation
While the TLC27L2 and TLC27L7 perform well using dual power supplies (also called balanced or split
supplies), the design is optimized for single-supply operation. This design includes an input common-mode
voltage range that encompasses ground as well as an output voltage range that pulls down to ground. The
supply voltage range extends down to 3 V (C-suffix types), thus allowing operation with supply levels commonly
available for TTL and HCMOS; however, for maximum dynamic range, 16-V single-supply operation is
recommended.
Many single-supply applications require that a voltage be applied to one input to establish a reference level that
is above ground. A resistive voltage divider is usually sufficient to establish this reference level (see Figure 38).
The low input bias current of the TLC27L2 and TLC27L7 permits the use of very large resistive values to
implement the voltage divider, thus minimizing power consumption.
The TLC27L2 and TLC27L7 work well in conjunction with digital logic; however, when powering both linear
devices and digital logic from the same power supply, the following precautions are recommended:
1.
Power the linear devices from separate bypassed supply lines (see Figure 39); otherwise, the linear
device supply rails can fluctuate due to voltage drops caused by high switching currents in the digital
logic.
2.
Use proper bypass techniques to reduce the probability of noise-induced errors. Single capacitive
decoupling is often adequate; however, high-frequency applications may require RC decoupling.
–
+
0.01
μ
F
C
R3
VREF
VI
R1
R2
VDD
VO
R4
VREF
VDD
R3
R1
R3
VO
VREF–VI
R4
R2
VREF
Figure 38. Inverting Amplifier With Voltage Reference
(b) SEPARATE BYPASSED SUPPLY RAILS (preferred)
(a) COMMON SUPPLY RAILS
–
+
–
+
Logic
Logic
Logic
Supply
Power
Logic
Logic
Logic
Supply
Power
VO
VO
Figure 39. Common Versus Separate Supply Rails
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 27L2C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LinCMOSE PRECISION DUAL OPERATIONAL AMPLIFIERS |
| 27L322 | 制造商:REGAL BELOIT 功能描述:OIL FILLED 制造商:Genteq 功能描述:OIL FILLED CAPACITOR |
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| 27L33 | 制造商:Genteq 功能描述: |
| 27L33BX | 制造商:Genteq 功能描述: |
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