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REF34-Q1 数据表(PDF) 22 Page - Texas Instruments |
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REF34-Q1 数据表(HTML) 22 Page - Texas Instruments |
22 / 34 page 11 Power Supply Recommendations The REF34-Q1 family of references feature an extremely low-dropout voltage. These references can be operated with a supply of only 50 mV above the output voltage. TI recommends a supply bypass capacitor ranging between 0.1 µF to 10 µF. 12 Layout 12.1 Layout Guidelines Figure 12-1 illustrates an example of a PCB layout for a data acquisition system using the REF34-Q1. Some key considerations are: • Connect low-ESR, 0.1-μF ceramic bypass capacitors at VIN, VREF of the REF34-Q1. • Decouple other active devices in the system per the device specifications. • Using a solid ground plane helps distribute heat and reduces electromagnetic interference (EMI) noise pickup. • Place the external components as close to the device as possible. This configuration prevents parasitic errors (such as the Seebeck effect) from occurring. • Do not run sensitive analog traces in parallel with digital traces. Avoid crossing digital and analog traces if possible, and only make perpendicular crossings when absolutely necessary. 12.2 Layout Example 1 6 2 3 4 GND_F GND_S EN OUT_F IN REF34XX C 5 OUT_S Figure 12-1. Layout Example (REF34xx-Q1) 1 5 2 3 4 NIC OUT REF34S-Q1 C OUT IN GND NC C IN Figure 12-2. Layout Example (REF34xxS-Q1) REF34-Q1 SBAS901B – JULY 2018 – REVISED SEPTEMBER 2020 www.ti.com 22 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated Product Folder Links: REF34-Q1 |
类似零件编号 - REF34-Q1_V01 |
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类似说明 - REF34-Q1_V01 |
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