Figure 6-3 Precision Instrumentation Amplifier

Figure 6-4 Low Power, High Output Current Precision Difference Amplifier

Figure 6-5 Pseudoground Generator

Figure 6-6 Differential Input Data Acquisition

Figure 6-7 Precision Voltage-to-Current Conversion

The difference amplifier is a highly versatile building block that is useful in a wide variety of applications. See the INA105 data sheet for additional applications ideas, including:

• Current receiver with compliance to rails
• Precision unity-gain inverting amplifier
• ±10‑V precision voltage reference
• ±5‑V precision voltage reference
• Precision unity-gain buffer
• Precision average value amplifier
• Precision G = 2 amplifier
• Precision summing amplifier
• Precision G = 1/2 amplifier
• Precision bipolar offsetting
• Precision summing amplifier with gain
• Instrumentation amplifier guard drive generator
• Precision summing instrumentation amplifier
• Precision absolute value buffer
• Precision voltage-to-current converter with differential inputs
• Differential input voltage-to-current converter for low I_OUT
• Isolating current source
• Differential output difference amplifier
• Isolating current source with buffering amplifier for greater accuracy
• Window comparator with window span and window center inputs
• Precision voltage-controlled current source with buffered differential inputs and gain
• Digitally controlled gain of ±1 amplifier