ADS5292IPFPR datasheet(57/67 Pages) TI1

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ADS5292

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SLAS788B – NOVEMBER 2011 – REVISED JULY 2012

Custom Filter Coefficients

The filter coefficients can also be programmed by the user (customized). For custom coefficients, set the register

bit <FILTER COEFF SELECT> and load the coefficients (h0 to h11) in registers 0x5A to 0xB9, using the serial

interface as:

Board Design Considerations

Grounding

A single ground plane is sufficient to give good performance, provided the analog, digital, and clock sections of

the board are cleanly partitioned. See ADS5292EVM Evaluation Module (SLAU355) for placement of

components, routing and grounding.

Supply Decoupling

Because the ADS5292 already includes internal decoupling, minimal external decoupling can be used without

loss in performance. For example, the ADS5292EVM uses a single 0.1 µF decoupling capacitor for each supply,

placed close to the device supply pins.

Packaging

Exposed Pad

The exposed pad at the bottom of the package is the main path for heat dissipation. Therefore, the pad must be

soldered to a ground plane on the PCB for best thermal performance. The pad must be connected to the ground

plane through the optimum number of vias.

Also, visit TI’s thermal website at www.ti.com/thermal.

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ADS5292IPFPR Datasheet(PDF) 57 Page - Texas Instruments