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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TLC272CPWRG4 датащи(PDF) 16 Page - Texas Instruments |
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TLC272CPWRG4 датащи(HTML) 16 Page - Texas Instruments |
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16 / 51 page  TLC272, TLC272A, TLC272B, TLC272Y, TLC277 LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS SLOS091E – OCTOBER 1987 – REVISED FEBRUARY 2002 16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION single-supply versus split-supply test circuits Because the TLC272 and TLC277 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 – VDD + CL RL VO VI VI VO RL CL VDD (a) SINGLE SUPPLY (b) SPLIT SUPPLY Figure 1. Unity-Gain Amplifier VO 2 k Ω 20 Ω 20 Ω VDD – 20 Ω 2 k Ω VO 20 Ω 1/2 VDD VDD + VDD (b) SPLIT SUPPLY (a) SINGLE SUPPLY Figure 2. Noise-Test Circuit VDD – VDD + 10 k Ω VO 100 Ω CL VI VI 1/2 VDD CL 100 Ω VO 10 k Ω VDD (a) SINGLE SUPPLY (b) SPLIT SUPPLY Figure 3. Gain-of-100 Inverting Amplifier |
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