參數(shù)資料
型號(hào)： 27L2AI
廠(chǎng)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(yè)數(shù)： 29/33頁(yè)
文件大?。?/td> 538K
代理商： 27L2AI
TLC27L2, TLC27L2A, TLC27L2B, TLC27L7
LinCMOS
PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS052B – OCTOBER 1987 – REVISED AUGUST 1994
29
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output characteristics (continued)
Figure 42. Resistive Pullup to Increase V
OH
IL
IF
IP
RL
R1
R2
VO
RP
VDD
VI
–
+
RP
VDD–VO
IL
IF
IP
ááááááááá
ááááááááá
ááááááááá
by the operational amplifier
Figure 43. Compensation for
Input Capacitance
C
–
+
VO
feedback
Operational amplifier circuits nearly always employ feedback, and since feedback is the first prerequisite for
oscillation, some caution is appropriate. Most oscillation problems result from driving capacitive loads
(discussed previously) and ignoring stray input capacitance. A small-value capacitor connected in parallel with
the feedback resistor is an effective remedy (see Figure 43). The value of this capacitor is optimized empirically.
electrostatic discharge protection
The TLC27L2 and TLC27L7 incorporate an internal electrostatic discharge (ESD) protection circuit that
prevents functional failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015.2. Care
should be exercised, however, when handling these devices, as exposure to ESD may result in the degradation
of the device parametric performance. The protection circuit also causes the input bias currents to be
temperature dependent and have the characteristics of a reverse-biased diode.
latch-up
Because CMOS devices are susceptible to latch-up due to their inherent parasitic thyristors, the TLC27L2 and
TLC27L7 inputs and outputs were designed to withstand –100-mA surge currents without sustaining latch-up;
however, techniques should be used to reduce the chance of latch-up whenever possible. Internal protection
diodes should not, by design, be forward biased. Applied input and output voltage should not exceed the supply
voltage by more than 300 mV. Care should be exercised when using capacitive coupling on pulse generators.
Supply transients should be shunted by the use of decoupling capacitors (0.1
μ
F typical) located across the
supply rails as close to the device as possible.
The current path established if latch-up occurs is usually between the positive supply rail and ground and can
be triggered by surges on the supply lines and/or voltages on either the output or inputs that exceed the supply
voltage. Once latch-up occurs, the current flow is limited only by the impedance of the power supply and the
forward resistance of the parasitic thyristor and usually results in the destruction of the device. The chance of
latch-up occurring increases with increasing temperature and supply voltages.
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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(chēng):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
27L327RR 制造商:REGAL BELOIT 功能描述:OIL FILLED CAPACITOR
27L33 制造商:Genteq 功能描述:
27L33BX 制造商:Genteq 功能描述:
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