Instrumentation Amplifier Texas Instruments INA114AP — Precision INA114AP PDIP‑8

Instrumentation amplifier Texas Instruments INA114AP in a PDIP‑8 package is a three‑op‑amp instrumentation amplifier designed for precision differential signal amplification. The device provides high input impedance, low offset and drift characteristics suitable for conditioning small sensor signals. Gain is adjustable via an external resistor, allowing flexible configuration for bridge measurements, low‑frequency data acquisition and laboratory prototyping in through‑hole PCB layouts.

Advantages

The INA114AP offers a compact PDIP‑8 form factor for easy breadboarding and prototyping. Its three‑op‑amp architecture delivers stable differential amplification with high common‑mode rejection and low input bias currents. Adjustable gain through a single external resistor enables tailored amplification without complex circuitry. The amplifier’s precision performance at low frequencies and straightforward external‑resistor gain control make it a practical choice for sensor signal conditioning and measurement circuits.

Suitable for

• Bridge sensor signal conditioning (strain gauges, load cells)
• Low‑frequency data acquisition and laboratory measurements
• Prototyping and educational electronics using through‑hole components
• Differential signal amplification in instrumentation and test equipment

Key specifications

• Architecture: three‑op‑amp instrumentation amplifier
• Package: PDIP‑8 through‑hole package
• Adjustable gain via single external resistor
• High input impedance suitable for sensor interfaces
• Low offset voltage and low drift for precision low‑frequency measurements
• High common‑mode rejection ratio for differential signal accuracy

How to use

Place the INA114AP in a PDIP‑8 socket or solder it directly to a through‑hole PCB for stable mounting. Connect the input sensor leads to the differential input pins and provide appropriate supply rails as required by your circuit design. Select and install an external gain resistor between the designated gain pins to set the amplifier gain according to the application’s required amplification. Include recommended bypassing and grounding practices to minimize noise and ensure stable operation in measurement setups.

Recommendations

For best measurement accuracy, use a low‑noise power supply, place decoupling capacitors close to the supply pins, and route input traces to minimize common‑mode interference. When measuring bridge sensors, use a stable reference and consider trimming offset with external circuitry if needed.