- 您現(xiàn)在的位置：買賣IC網 > PDF目錄68799 > 5962-9564004QDA (TEXAS INSTRUMENTS INC) QUAD OP-AMP, 1000000 uV OFFSET-MAX, 0.21 MHz BAND WIDTH, CDFP14 PDF資料下載
參數(shù)資料
| 型號： | 5962-9564004QDA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 運算放大器 |
| 英文描述： | QUAD OP-AMP, 1000000 uV OFFSET-MAX, 0.21 MHz BAND WIDTH, CDFP14 |
| 封裝： | CERAMIC, DFP-14 |
| 文件頁數(shù)： | 41/69頁 |
| 文件大?。?/td> | 1673K |
| 代理商： | 5962-9564004QDA |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁當前第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁
TLC225x, TLC225xA
Advanced LinCMOS
RAIL-TO-RAIL
VERY LOW-POWER OPERATIONAL AMPLIFIERS
SLOS176D – FEBRUARY 1997 – REVISED MARCH 2001
46
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
driving large capacitive loads
The TLC225x 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 56 and Figure 57 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 is that it adds
a zero to the transfer function and the second is that it 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
Where :
(1)
φ
m1 + Improvement in phase margin
UGBW
+ Unity-gain bandwidth frequency
R
null + Output series resistance
C
L + Load capacitance
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, thus 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PDF資料 |
PDF描述 |
|---|---|
| 5962-9564002NYDR | QUAD OP-AMP, 1750000 uV OFFSET-MAX, 0.21 MHz BAND WIDTH, PDSO14 |
| 5962-9564004NYDR | QUAD OP-AMP, 1000000 uV OFFSET-MAX, 0.21 MHz BAND WIDTH, PDSO14 |
| 5962-9566602Q2A | QUAD OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CQCC20 |
| 5962-9566602QCA | QUAD OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CDIP14 |
| 5962-9566602QDA | QUAD OP-AMP, 1000 uV OFFSET-MAX, 0.187 MHz BAND WIDTH, CDFP14 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 5962-9564201Q2A | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:5962-9564201Q2A - Rail/Tube |
| 5962-9564201QRA | 制造商:Texas Instruments 功能描述:Bus XCVR Single 8-CH 3-ST 20-Pin CDIP Tube |
| 5962-9564201QSA | 制造商:Texas Instruments 功能描述:Bus XCVR Single 8-CH 3-ST 20-Pin CFPAK Tube 制造商:Texas Instruments 功能描述:BUS XCVR SGL 8CH 3-ST 20CFPAK - Rail/Tube |
| 5962-9564201VRA | 制造商:Texas Instruments 功能描述:3.3-V ABT OCTAL BUS TRANSCEIVERS |
| 5962-9564201VSA | 制造商:Texas Instruments 功能描述:QML CLASS V, SNV54LVTH245AW - Rail/Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復。