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TS321IDBVR Arkusz danych(PDF) 10 Page - Texas Instruments |
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TS321IDBVR Arkusz danych(HTML) 10 Page - Texas Instruments |
10 / 21 page -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 0 0.5 1 1.5 2 Time (ms) VIN VOUT TS321 SLOS489C – DECEMBER 2005 – REVISED APRIL 2015 www.ti.com Typical Application (continued) 9.2.3 Application Curve Figure 9. Input and output voltages of the inverting amplifier 10 Power Supply Recommendations The TS321 is specified to operate between 3 V and 30 V or a dual supply between ±1.5 V and ±15 V. CAUTION Supply voltages larger than 32 V for a single supply, or outside the range of ±16 V for a dual supply can permanently damage the device (see the Absolute Maximum Ratings ). Place 0.1- μF bypass capacitors close to the power-supply pins to reduce errors coupling in from noisy or high impedance power supplies. For more detailed information on bypass capacitor placement, refer to the Layout. 11 Layout 11.1 Layout Guidelines For best operational performance of the device, use good PCB layout practices, including: • Noise can propagate into analog circuitry through the power pins of the circuit as a whole, as well as the operational amplifier. Bypass capacitors are used to reduce the coupled noise by providing low impedance power sources local to the analog circuitry. – Connect low-ESR, 0.1- μF ceramic bypass capacitors between each supply pin and ground, placed as close to the device as possible. A single bypass capacitor from V+ to ground is applicable for single supply applications. • Separate grounding for analog and digital portions of circuitry is one of the simplest and most-effective methods of noise suppression. One or more layers on multilayer PCBs are usually devoted to ground planes. A ground plane helps distribute heat and reduces EMI noise pickup. Make sure to physically separate digital and analog grounds, paying attention to the flow of the ground current. For more detailed information, refer to application note SLOA089. • To reduce parasitic coupling, run the input traces as far away from the supply or output traces as possible. If it is not possible to keep them separate, it is much better to cross the sensitive trace perpendicular as 10 Submit Documentation Feedback Copyright © 2005–2015, Texas Instruments Incorporated Product Folder Links: TS321 |
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