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TLC080CD 数据表(PDF) 16 Page - Texas Instruments |
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TLC080CD 数据表(HTML) 16 Page - Texas Instruments |
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16 / 53 page ![]() CLOAD RF Input Output RG RNULL _ + V OO V IO 1 R F R G I IB R S 1 RF R G I IB– R F + VI + RG RS RF IIB– VO IIB+ = ( ) ) ( ± + ( )) ( ± + + TLC080 , TLC081, TLC082 TLC083, TLC084, TLC085, TLC08xA SLOS254F – JUNE 1999 – REVISED DECEMBER 2011 www.ti.com Driving a Capacitive Load When the amplifier is configured in this manner, capacitive loading directly on the output will decrease the device ’s phase margin leading to high frequency ringing or oscillations. Therefore, for capacitive loads of greater than 10 pF, it is recommended that a resistor be placed in series (RNULL) with the output of the amplifier, as shown in Figure 47. A minimum value of 20 Ω should work well for most applications. Figure 47. Driving a Capacitive Load Offset Voltage The output offset voltage, (VOO) is the sum of the input offset voltage (VIO) and both input bias currents (IIB) times the corresponding gains. The following schematic and formula can be used to calculate the output offset voltage: Figure 48. Output Offset Voltage Model 16 Submit Documentation Feedback Copyright © 1999–2011, Texas Instruments Incorporated Product Folder Link(s): TLC080 TLC081 TLC082 TLC083 TLC084 TLC085 TLC08xA |
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