參數(shù)資料
型號(hào)： 5962-9566602QCA
廠商： TEXAS INSTRUMENTS INC
元件分類： 運(yùn)算放大器
英文描述： QUAD OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CDIP14
封裝： CERAMIC, DIP-14
文件頁(yè)數(shù)： 32/61頁(yè)
文件大?。?/td> 1557K
代理商： 5962-9566602QCA
TLV225x, TLV225xA
Advanced LinCMOS RAILTORAIL
VERY LOW POWER OPERATIONAL AMPLIFIERS
SLOS185D FEBRUARY 1997 REVISED AUGUST 2006
38
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
driving large capacitive loads
The TLV2252 is designed to drive larger capacitive loads than most CMOS operational amplifiers. Figure 56
and Figure 57 illustrate its ability to drive loads up to 1000 pF while maintaining good gain and phase margins
(Rnull = 0).
A smaller series resistor (Rnull) at the output of the device (see Figure 60) improves the gain and phase margins
when driving large capacitive loads. Figure 55 and Figure 56 show the effects of adding series resistances of
10
, 50 , 100 , 200 , and 500 . The addition of this series resistor has two effects: the first adds a zero
to the transfer function and the second reduces the frequency of the pole associated with the output load in the
transfer function.
The zero introduced to the transfer function is equal to the series resistance times the load capacitance. To
calculate the improvement in phase margin, equation 1 can be used.
φ
m1 + tan
–1 2 ×π × UGBW × R
null ×
C
L
φ
m1 + improvement in phase margin
UGBW
+ unity-gain bandwidth frequency
R
null + output series resistance
C
L + load capacitance
(1)
Where :
The unity-gain bandwidth (UGBW) frequency decreases as the capacitive load increases (see Figure 58). To
use equation 1, UGBW must be approximated from Figure 58.
Using equation 1 alone overestimates the improvement in phase margin as illustrated in Figure 59. The
overestimation is caused by the decrease in the frequency of the pole associated with the load, providing
additional phase shift and reducing the overall improvement in phase margin.
Using Figure 60, with equation 1 enables the designer to choose the appropriate output series resistance to
optimize the design of circuits driving large capacitance loads.
50 k
50 k
VDD / GND
VDD +
Rnull
CL
VI
+
Figure 60. Series-Resistance Circuit
相關(guān)PDF資料
PDF描述
5962-9566602QDA QUAD OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CDFP14
5962-9566604Q2A QUAD OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CQCC20
5962-9566604QCA QUAD OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CDIP14
5962-9566604QDA QUAD OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CDFP14
5962-9566601Q2A DUAL OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CQCC20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
5962-9566602QDA 制造商:Texas Instruments 功能描述:OP Amp Quad GP R-R O/P 制造商:Rochester Electronics LLC 功能描述:- Bulk
5962-9566701MEA 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
5962-9571001MUA 制造商:International Rectifier 功能描述:REG LDO LIN FIX NEG -12V 1.18A 3PIN TO-257AA ISOLATED - Rail/Tube
5962-9571102MUA 制造商:International Rectifier 功能描述:REG LDO LIN FIX NEG -5.2V 1.27A 3PIN TO-257AA ISOLATED - Rail/Tube
59629571201Q3A 制造商:TI 功能描述:SNJ54ABT843FK
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