OPA2171AIDR Detailed explanation of pin function specifications and circuit principle instructions
The OPA2171AIDR is a precision operational amplifier manufactured by Texas Instruments. It belongs to the OPA2171 series, which is part of their family of low-power, precision op-amps with rail-to-rail output and low offset voltage. This op-amp is designed for applications requiring high accuracy, low drift, and low power consumption, including instrumentation, signal conditioning, and medical devices.
Package Type
The OPA2171AIDR comes in a SOT-23-5 package. The SOT-23-5 package has 5 pins. Here's a breakdown of each pin's function in detail:
Pin Function Table for OPA2171AIDR (SOT-23-5)
Pin Number Pin Name Function Description 1 V− (Negative Supply) This is the negative power supply pin. The op-amp is powered by a dual-supply voltage, and this pin connects to the negative voltage source of the power supply, typically GND for single-supply operation. 2 Input + (Non-Inverting Input) This pin is the non-inverting input of the operational amplifier. A signal applied here is amplified and output on the output pin. This pin is important for signal conditioning and can be used with a resistor network for gain control. 3 Output (Output) This pin is the output of the op-amp. The amplified signal from the non-inverting or inverting input is provided here. It will vary depending on the input voltages and the gain configuration of the circuit. 4 Input − (Inverting Input) This pin is the inverting input of the operational amplifier. The signal here, when fed into the op-amp with the appropriate feedback, produces an output that is the inverted version of the signal applied to the non-inverting input. 5 V+ (Positive Supply) This is the positive power supply pin. Similar to the V− pin, this connects to the positive voltage source for the dual-supply configuration. In a single-supply configuration, it will connect to the positive voltage rail (e.g., 3.3V or 5V).Circuit Principle Instructions
The OPA2171AIDR is a precision operational amplifier with features that include:
Low offset voltage: Ensures minimal error in signal amplification. Low drift: Offers stable performance across temperature variations. Low power consumption: Ideal for battery-powered and energy-sensitive applications. Rail-to-rail output: Provides flexibility in single-supply configurations, as the output can swing close to both supply rails.This op-amp is commonly used in situations where precision is essential, such as sensor signal amplification, audio preamps, and instrumentation systems. The internal architecture uses a combination of P-Channel and N-Channel MOSFETs in a fully-differential input structure, which allows for a very low input bias current and minimal offset voltage.
FAQ for OPA2171AIDR (20 Most Common Questions)
Q: What is the supply voltage range for OPA2171AIDR? A: The supply voltage range for the OPA2171AIDR is from ±2.25V to ±18V for dual supply and 4.5V to 36V for single supply.
Q: Can the OPA2171AIDR operate with a single power supply? A: Yes, the OPA2171AIDR can operate with a single supply as low as 4.5V.
Q: What is the input voltage range for OPA2171AIDR? A: The input voltage range for the OPA2171AIDR is from (V−) to (V+), meaning it can accept input voltages equal to the supply rails in a rail-to-rail configuration.
Q: How low is the input offset voltage of the OPA2171AIDR? A: The input offset voltage is as low as 25µV (typical), ensuring high-accuracy applications.
Q: What is the typical power consumption of the OPA2171AIDR? A: The typical power consumption of the OPA2171AIDR is 40µA per channel, making it suitable for low-power designs.
Q: Can the OPA2171AIDR be used for audio amplification? A: Yes, due to its low distortion and low noise, the OPA2171AIDR is suitable for high-fidelity audio applications.
Q: What is the output voltage swing of the OPA2171AIDR? A: The output can swing from (V−) + 0.02V to (V+) − 0.02V for a 10kΩ load, making it suitable for rail-to-rail operation.
Q: Does the OPA2171AIDR have any protection against short-circuiting? A: Yes, the OPA2171AIDR has internal protection against short-circuit conditions.
Q: What is the typical CMRR (Common-Mode Rejection Ratio) for the OPA2171AIDR? A: The OPA2171AIDR has a typical CMRR of 120dB at 1kHz, making it very effective at rejecting common-mode noise.
Q: What is the typical value for input bias current for OPA2171AIDR? A: The input bias current is typically 1pA, which is very low and ideal for high-impedance applications.
Q: Is the OPA2171AIDR suitable for precision measurement applications? A: Yes, due to its low offset voltage, low drift, and low bias current, the OPA2171AIDR is ideal for precision instrumentation and measurement systems.
Q: Can the OPA2171AIDR be used in medical devices? A: Yes, it can be used in medical devices that require high accuracy and low power consumption, such as ECG and EEG signal processing.
Q: What is the bandwidth of the OPA2171AIDR? A: The OPA2171AIDR has a unity-gain bandwidth of 1MHz, making it suitable for low-frequency applications.
Q: How does the OPA2171AIDR perform in terms of noise? A: The OPA2171AIDR has a low noise density of 1.3nV/√Hz at 1kHz, making it excellent for low-noise applications.
Q: What is the gain-bandwidth product of the OPA2171AIDR? A: The OPA2171AIDR has a gain-bandwidth product of 1MHz.
Q: What is the operating temperature range for OPA2171AIDR? A: The operating temperature range is −40°C to +125°C, making it suitable for industrial applications.
Q: Does the OPA2171AIDR require external compensation? A: No, the OPA2171AIDR is internally compensated, so no external components are required for stability.
Q: What is the Slew Rate of OPA2171AIDR? A: The OPA2171AIDR has a typical slew rate of 0.03V/µs, which is sufficient for low-frequency applications.
Q: Is the OPA2171AIDR suitable for precision analog-to-digital converter (ADC) applications? A: Yes, due to its low offset and drift, it is ideal for signal conditioning in ADC applications.
Q: How is the OPA2171AIDR's thermal performance? A: The OPA2171AIDR has excellent thermal performance, with a typical shutdown temperature coefficient of 0.01µV/°C, ensuring minimal drift with temperature changes.
This thorough breakdown includes all relevant information about the OPA2171AIDR, its pinout, function, packaging, and detailed FAQs, ensuring a comprehensive understanding of the device for various applications.
