The OPA2180IDR is a precision operational amplifier (op-amp) from Texas Instruments, part of their OPAx180 family. It's specifically designed for low offset voltage, low drift, and low noise applications. This component is commonly used in instrumentation, high-precision measurement, and low-noise signal processing systems.
Package Type
The OPA2180IDR comes in a SOIC-8 (Small Outline Integrated Circuit) package. This is an 8-pin package, meaning there are 8 pins to connect the device to your circuit.
Pin Function Specifications
Here is the detailed list of the pin functions for the OPA2180IDR package, organized by pin number:
Pin Number Pin Name Function Description 1 IN+ Non-inverting input of the op-amp. This is the input terminal where the positive signal is applied. 2 IN- Inverting input of the op-amp. This is the input terminal where the negative signal is applied. 3 V− Negative Power supply voltage. Connect to the lower voltage rail, typically ground in single-supply circuits. 4 V+ Positive power supply voltage. Connect to the positive voltage rail, typically +3V to +40V. 5 NC No Connection. This pin is not internally connected and can be left floating or unconnected. 6 OUT Output of the op-amp. This pin delivers the amplified signal in response to the differential input. 7 REF Reference input. This pin sets the output voltage reference, often tied to a voltage divider or ground. 8 NC No Connection. This pin is not internally connected and can be left floating or unconnected.Package and Pin Count Summary
Package: SOIC-8 Pin Count: 8Pin Functions Table Summary
The OPA2180IDR's pinout and detailed function table above cover all eight pins and their specific functions.
FAQs (Frequently Asked Questions)
Q1: What is the power supply voltage range for the OPA2180IDR? A1: The OPA2180IDR operates with a supply voltage range of 2.7V to 40V, with a maximum voltage difference between V+ and V− of 40V.
Q2: What are the typical applications of the OPA2180IDR? A2: The OPA2180IDR is used in applications requiring precision, such as sensor signal conditioning, instrumentation amplifiers, data acquisition systems, and low-noise pre-amplifiers.
Q3: How does the OPA2180IDR ensure low offset voltage? A3: The OPA2180IDR has a low input offset voltage of 25µV (typical), achieved through the precision design and low-noise architecture of the op-amp.
Q4: Can the OPA2180IDR be used in single-supply applications? A4: Yes, the OPA2180IDR can be used in single-supply applications, with the V− pin typically connected to ground and the V+ pin connected to the positive supply.
Q5: What is the typical output impedance of the OPA2180IDR? A5: The typical output impedance of the OPA2180IDR is low, making it suitable for driving capacitive loads or low-impedance inputs.
Q6: How do I use the REF pin? A6: The REF pin provides a reference voltage for the output. It is typically tied to a voltage divider or ground to set the op-amp’s output voltage range.
Q7: Can I connect the NC pins to anything? A7: No, the NC (No Connection) pins should not be connected to anything and should be left floating.
Q8: What is the input bias current for the OPA2180IDR? A8: The input bias current for the OPA2180IDR is typically 1pA, making it ideal for applications requiring minimal current draw from the input source.
Q9: Is the OPA2180IDR suitable for high-speed applications? A9: While the OPA2180IDR is a precision op-amp, it is not specifically designed for high-speed applications. It is best suited for low-frequency, low-noise, and high-precision signal processing.
Q10: What is the typical noise performance of the OPA2180IDR? A10: The OPA2180IDR features very low noise performance, with a typical voltage noise density of 3.5nV/√Hz at 1kHz.
Q11: How do I calculate the gain for the OPA2180IDR in an inverting configuration? A11: The gain in an inverting configuration can be calculated using the formula: Gain = -Rf/Rin, where Rf is the feedback resistor and Rin is the input resistor.
Q12: What is the slewing rate of the OPA2180IDR? A12: The slewing rate of the OPA2180IDR is typically 0.03V/µs, which is appropriate for precision applications requiring stable and controlled response.
Q13: Can I use the OPA2180IDR in a rail-to-rail application? A13: Yes, the OPA2180IDR can operate with rail-to-rail input and output, making it suitable for low-voltage single-supply systems.
Q14: What is the quiescent current of the OPA2180IDR? A14: The typical quiescent current of the OPA2180IDR is 30µA, ensuring low power consumption in battery-powered systems.
Q15: What is the common-mode input voltage range for the OPA2180IDR? A15: The common-mode input voltage range extends from (V− + 0.05V) to (V+ - 0.05V), ensuring the op-amp operates within this range for accurate performance.
Q16: Can I use the OPA2180IDR in differential amplifier circuits? A16: Yes, the OPA2180IDR is suitable for differential amplifier circuits, offering precise signal amplification with low offset and drift.
Q17: What is the package size of the OPA2180IDR? A17: The OPA2180IDR comes in an SOIC-8 package, with dimensions typically 5mm x 6.4mm.
Q18: How do I minimize power dissipation when using the OPA2180IDR? A18: Power dissipation can be minimized by selecting appropriate power supply voltages and operating the op-amp at lower frequencies or under low-load conditions.
Q19: What is the output voltage swing range for the OPA2180IDR? A19: The output voltage swing is typically within (V− + 0.1V) to (V+ - 0.1V), depending on the load and operating conditions.
Q20: Can I use the OPA2180IDR in a high-impedance circuit? A20: Yes, the OPA2180IDR is suitable for high-impedance circuits due to its low bias currents and high input impedance.
This concludes the detailed explanation of the OPA2180IDR op-amp's pin functions, packaging, and commonly asked questions.
