PGA2320

SBOS312B − JULY 2004 − REVISED DECEMBER 2004

www.ti.com

12

PRINTED CIRCUIT BOARD LAYOUT

GUIDELINES

It is recommended that the ground planes for the digital

and analog sections of the printed circuit board (PCB) be

separate from one another. The planes should be

connected at a single point. Figure 6 shows the

recommended PCB floor plan for the PGA2320.

The PGA2320 is mounted so that it straddles the split be-

tween the digital and analog ground planes. Pins 1 through

8 are oriented to the digital side of the board, while pins 9

through 16 are on the analog side of the board.

Analog

Ground

Digital

Ground

DIGITAL GROUND PLANE

ANALOG GROUND PLANE

Host

Digital Power

+5V

DGND

Analog Power

−

15V

+15V

AGND

Analog

Inputs

and

Outputs

PGA2320

Figure 6. Typical PCB Layout Floor Plan