поискавой системы для электроныых деталей |
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TPA6138A2 датащи(PDF) 10 Page - Texas Instruments |
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TPA6138A2 датащи(HTML) 10 Page - Texas Instruments |
10 / 22 page R1 R2 R3 VSUP_MO UVP –IN Differential Input Inverting Input TPA6138A2 R 1 R 1 R 2 R2 + – C 3 C3 R 3 R3 C1 C 1 C 2 R 1 R 2 + – C 3 R 3 C 1 C 2 +IN –IN TPA6138A2 TPA6138A2 SLOS704B – JANUARY 2011 – REVISED AUGUST 2015 www.ti.com Device Functional Modes (continued) Figure 8. Second-Order Active Low-Pass Filter The resistor values should have a low value for obtaining low noise, but should also have a high enough value to allow use of a small-size ac-coupling capacitor. With the proposed values of 15 k Ω, 30 kΩ, and 43 kΩ, a dynamic range (DYR) of 106 dB can be achieved with a 1- μF input ac-coupling capacitor. 9.4.3 TPA6138A2 UVP Operation The shutdown threshold at the UVP pin is 1.25 V. The customer must use a resistor divider to obtain the shutdown threshold and hysteresis desired for a particular application. The customer-selected thresholds can be determined as follows: VUVP = (1.25 – 6 µA × R3) × (R1 + R2) / R2 (3) Hysteresis = 5 µA × R3 × (R1 + R2) / R2 (4) For example, to obtain VUVP = 3.8 V and 1-V hysteresis, we can use R1 = 3 kΩ, R2 = 1 kΩ and R3 = 50 kΩ. Figure 9. UVP Resistor Divider 10 Submit Documentation Feedback Copyright © 2011–2015, Texas Instruments Incorporated Product Folder Links: TPA6138A2 |
Аналогичный номер детали - TPA6138A2_17 |
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Аналогичное описание - TPA6138A2_17 |
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