Bypass

Capacitor

Bypass

Capacitor

Gain Resistor

R

6

V–

IH

V+

IH

V–

R

6

V+

V

O

REF

–

+

V+

V

OUT

GND

V

IN

V

IN

GND

V–

INA128-HT, INA129-HT

SBOS501F – JANUARY 2010 – REVISED FEBRUARY 2015

www.ti.com

11 Layout

11.1 Layout Guidelines

Place the power-supply bypass capacitor as closely as possible to the supply and ground pins. The

recommended value of this bypass capacitor is 0.1

μF to 1 μF. If necessary, additional decoupling capacitance

can be added to compensate for noisy or high-impedance power supplies. These decoupling capacitors must be

placed between the power supply and INA12x device.

The gain resistor must be placed close to pin 1 and pin 8. This placement limits the layout loop and minimizes

any noise coupling into the part.

11.2 Layout Example

Figure 32. Recommended Layout

22

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