OPA4197IPWR Detailed explanation of pin function specifications and circuit principle instructions
The OPA4197IPWR is a high-precision operational amplifier from Texas Instruments, specifically designed for low-noise and high-performance applications. It is a quad operational amplifier with rail-to-rail input and output.
1. Brand:
Manufacturer: Texas Instruments Series: OPA41972. Package Type:
Package Code: WQFN-20 (20-pin leadless quad flat package) Package Type: 20-Pin QFN (Quad Flat No-lead) package3. Pin Function Specifications:
Below is the detailed pinout for the OPA4197IPWR, including each pin's function:
Pin # Pin Name Pin Function Description 1 V− (Pin 1) Negative Power supply pin. Connect to the negative voltage rail or ground. 2 Out A (Pin 2) Output of the first operational amplifier in the quad package. 3 In− A (Pin 3) Inverting input of the first amplifier. 4 In+ A (Pin 4) Non-inverting input of the first amplifier. 5 V− (Pin 5) Negative power supply pin. Connect to the negative voltage rail or ground. 6 Out B (Pin 6) Output of the second operational amplifier in the quad package. 7 In− B (Pin 7) Inverting input of the second amplifier. 8 In+ B (Pin 8) Non-inverting input of the second amplifier. 9 V− (Pin 9) Negative power supply pin. Connect to the negative voltage rail or ground. 10 Out C (Pin 10) Output of the third operational amplifier in the quad package. 11 In− C (Pin 11) Inverting input of the third amplifier. 12 In+ C (Pin 12) Non-inverting input of the third amplifier. 13 V− (Pin 13) Negative power supply pin. Connect to the negative voltage rail or ground. 14 Out D (Pin 14) Output of the fourth operational amplifier in the quad package. 15 In− D (Pin 15) Inverting input of the fourth amplifier. 16 In+ D (Pin 16) Non-inverting input of the fourth amplifier. 17 V+ (Pin 17) Positive power supply pin. Connect to the positive voltage rail. 18 V+ (Pin 18) Positive power supply pin. Connect to the positive voltage rail. 19 V+ (Pin 19) Positive power supply pin. Connect to the positive voltage rail. 20 V+ (Pin 20) Positive power supply pin. Connect to the positive voltage rail.4. Principle and Usage of Each Pin:
Each of the 20 pins on the OPA4197IPWR has a specific function that contributes to its overall operation in high-precision circuits.
Power Supply Pins (V+ and V−): These pins provide the operational amplifier with the necessary power to function. Ensure that these pins are connected to the correct supply voltages for the op-amp to work efficiently.
Output Pins (Out A, Out B, Out C, Out D): These pins represent the output of each of the four operational amplifiers. The output is a linear function of the differential input applied to each amplifier (In+ and In−).
Inverting Inputs (In− A, In− B, In− C, In− D): These are the negative inputs of each op-amp. For the op-amp to amplify a signal, the negative input should receive the signal relative to the positive input (In+).
Non-Inverting Inputs (In+ A, In+ B, In+ C, In+ D): These are the positive inputs of each op-amp. The voltage applied here will be amplified according to the op-amp’s gain.
5. Common FAQs:
Below are 20 frequently asked questions regarding the OPA4197IPWR:
Q1: What is the primary application of the OPA4197IPWR? A1: The OPA4197IPWR is primarily used in low-noise, high-precision applications like audio, measurement systems, and instrumentation.
Q2: What is the voltage range for the OPA4197IPWR? A2: The OPA4197IPWR can operate with a supply voltage between ±2.25 V to ±18 V.
Q3: How many op-amps are integrated into the OPA4197IPWR? A3: The OPA4197IPWR integrates four independent op-amps in a single package.
Q4: Can the OPA4197IPWR be used in a single-supply configuration? A4: Yes, the OPA4197IPWR can be used in a single-supply configuration, with the negative supply pin connected to ground.
Q5: What is the output voltage swing range of the OPA4197IPWR? A5: The output voltage swing of the OPA4197IPWR is rail-to-rail, meaning it can output voltages that go from the negative to the positive supply rails.
Q6: What is the maximum input voltage range? A6: The input voltage range is typically between the negative and positive supply voltages, excluding the rails by a small margin.
Q7: What is the power consumption of the OPA4197IPWR? A7: The OPA4197IPWR has a typical quiescent current of 1.3 mA per amplifier.
Q8: Is the OPA4197IPWR suitable for use in precision signal conditioning? A8: Yes, the OPA4197IPWR is designed for precision applications with very low offset voltage and drift.
Q9: Can I use the OPA4197IPWR in automotive applications? A9: Yes, the OPA4197IPWR is suitable for automotive applications, with its wide voltage and temperature ranges.
Q10: What is the operating temperature range of the OPA4197IPWR? A10: The operating temperature range of the OPA4197IPWR is from −40°C to +125°C.
Q11: How do I connect the OPA4197IPWR in a typical circuit? A11: Connect the supply pins to your voltage rails, the input pins to your signal source, and use the output pins to interface with the following stage in your circuit.
Q12: What is the input bias current of the OPA4197IPWR? A12: The typical input bias current is 1 pA, ensuring minimal error in low-current applications.
Q13: Can the OPA4197IPWR be used for differential signal amplification? A13: Yes, the OPA4197IPWR is ideal for differential amplification applications.
Q14: How should I decouple the power supply for the OPA4197IPWR? A14: Use 0.1 µF and 10 µF capacitor s near the supply pins to reduce noise and improve stability.
Q15: What is the output drive capability of the OPA4197IPWR? A15: The OPA4197IPWR can drive capacitive loads of up to 100 pF.
Q16: Is the OPA4197IPWR available in other package types? A16: The OPA4197 is available in multiple packages, including 14-pin SOIC and 20-pin WQFN.
Q17: Does the OPA4197IPWR have over-temperature protection? A17: Yes, the OPA4197IPWR has built-in thermal shutdown and overcurrent protection features.
Q18: Can I use the OPA4197IPWR in high-speed applications? A18: While the OPA4197IPWR is not designed for high-speed applications, it works well in low-frequency, precision systems.
Q19: What is the common-mode rejection ratio (CMRR) of the OPA4197IPWR? A19: The OPA4197IPWR has a typical CMRR of 120 dB, ensuring excellent rejection of common-mode signals.
Q20: Is there an evaluation module for the OPA4197IPWR? A20: Yes, Texas Instruments provides an evaluation module (EVM) for the OPA4197, which can be used for testing and prototyping.
This detailed explanation covers the primary functions and specifications of the OPA4197IPWR, along with its pinout and common FAQs to guide you in using it effectively in your applications.
