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TLC27M2ACD датащи(PDF) 14 Page - Texas Instruments |
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TLC27M2ACD датащи(HTML) 14 Page - Texas Instruments |
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14 / 49 page ![]() TLC27M2, TLC27M2A, TLC27M2B, TLC27M7 LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS SLOS051E − OCTOBER 1987 − REVISED AUGUST 2008 14 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION single-supply versus split-supply test circuits Because the TLC27M2 and TLC27M7 are optimized for single-supply operation, circuit configurations used for the various tests often present some inconvenience since the input signal, in many cases, must be offset from ground. This inconvenience can be avoided by testing the device with split supplies and the output load tied to the negative rail. A comparison of single-supply versus split-supply test circuits is shown below. The use of either circuit gives the same result. VDD CL RL VO VI VI VO RL CL VDD + VDD − (a) SINGLE SUPPLY (b) SPLIT SUPPLY Figure 1. Unity-Gain Amplifier 1/2 VDD VDD VDD + 20 Ω VO 2 k Ω 20 Ω VDD − 20 Ω 20 Ω 2 k Ω VO (b) SPLIT SUPPLY (a) SINGLE SUPPLY Figure 2. Noise-Test Circuit VDD 10 k Ω VO 100 Ω CL 1/2 VDD VI VI CL 100 Ω VO 10 k Ω VDD + VDD − (a) SINGLE SUPPLY (b) SPLIT SUPPLY Figure 3. Gain-of-100 Inverting Amplifier |
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