The OPA2188AIDGKR is a product manufactured by Texas Instruments. It is a precision, low-power operational amplifier (op-amp) with rail-to-rail input and output. This specific model is part of the OPA2188 family, which is commonly used in applications where high precision and low power consumption are needed.
Package Type:
OPA2188AIDGKR: This part is available in a VSSOP-8 (Very Small Shrink Outline Package), which has 8 pins.Pin Function Specifications (Detailed)
Below is a detailed explanation of each pin's function for the OPA2188AIDGKR package.
Pin Number Pin Name Pin Function Description 1 V– Negative supply voltage (ground for single supply operation). 2 In+ Non-inverting input terminal for the operational amplifier. The voltage at this pin is amplified according to the difference between this pin and In–. 3 Out Output terminal for the operational amplifier. This pin provides the amplified signal, which is the result of the difference between the inputs (In+ and In–). 4 V+ Positive supply voltage (the supply voltage for the op-amp). 5 NC No connection. This pin is not used internally and does not impact the operation of the chip. 6 In– Inverting input terminal for the operational amplifier. The voltage at this pin, along with the voltage at the In+ pin, determines the output voltage. 7 V– Another reference pin for the negative supply voltage. This is a duplicate of pin 1, used for internal layout purposes. 8 V+ Another reference pin for the positive supply voltage. This is a duplicate of pin 4, used for internal layout purposes.Circuit Principle of the OPA2188AIDGKR
The OPA2188 is a precision op-amp designed with rail-to-rail input and output capabilities, meaning that it can output voltages that are very close to the supply rails (both V+ and V–). This makes it suitable for low-voltage applications where traditional op-amps might not perform well. The device features low offset voltage and low drift, making it suitable for precision measurement applications.
In a typical configuration, the In+ and In– pins receive the input signals, and the Out pin provides the output. The voltage difference between In+ and In– is amplified by the op-amp and output at the Out pin.
The OPA2188 can be powered with a single or dual power supply. The V+ and V– pins are used to provide the necessary power. The NC pin is internally connected to nothing and is used to reduce the size of the package.
20 Commonly Asked Questions (FAQ) for the OPA2188AIDGKR
Here are the 20 FAQs related to the OPA2188AIDGKR, with detailed answers:
Q: What is the input voltage range for the OPA2188AIDGKR? A: The OPA2188AIDGKR operates with a rail-to-rail input, meaning the voltage at In+ and In– can range from V– to V+. Q: What is the supply voltage range for the OPA2188AIDGKR? A: The supply voltage range for the OPA2188AIDGKR is from 2.7V to 36V (single supply) or ±1.35V to ±18V (dual supply). Q: How low can the output voltage go on the OPA2188AIDGKR? A: The OPA2188AIDGKR provides rail-to-rail output, so the output can swing to within a few millivolts of the supply rails. Q: What is the quiescent current of the OPA2188AIDGKR? A: The quiescent current is typically 10nA, making it suitable for low-power applications. Q: Is the OPA2188AIDGKR suitable for low voltage operations? A: Yes, the OPA2188AIDGKR is designed for low-voltage operations, with a minimum operating voltage of 2.7V. Q: What is the typical offset voltage for the OPA2188AIDGKR? A: The typical input offset voltage is 25µV. Q: Does the OPA2188AIDGKR have a shutdown mode? A: No, the OPA2188AIDGKR does not have a shutdown mode. It operates continuously as long as power is supplied. Q: Can I use the OPA2188AIDGKR in a single-supply configuration? A: Yes, the OPA2188AIDGKR can be used with a single supply or dual supplies. Q: How does the OPA2188AIDGKR perform in terms of noise? A: The OPA2188AIDGKR is designed for low-noise applications, with a typical noise density of 2.5nV/√Hz at 1kHz.Q: What is the output drive capability of the OPA2188AIDGKR?
A: The OPA2188AIDGKR can drive up to 10kΩ loads and still provide a rail-to-rail output.Q: Can the OPA2188AIDGKR be used in instrumentation applications?
A: Yes, the low offset and drift characteristics make it suitable for high-precision instrumentation applications.Q: How accurate is the OPA2188AIDGKR?
A: The OPA2188AIDGKR has high accuracy with low offset voltage and drift, which ensures accurate performance over time and temperature changes.Q: What is the output impedance of the OPA2188AIDGKR?
A: The output impedance is low, typically 5Ω at mid-output voltage.Q: What is the recommended temperature range for operating the OPA2188AIDGKR?
A: The OPA2188AIDGKR operates in a temperature range from -40°C to +125°C.Q: How does the OPA2188AIDGKR handle power supply fluctuations?
A: The OPA2188AIDGKR is designed to tolerate minor fluctuations in the power supply, as it has good power supply rejection ratio (PSRR).Q: Can the OPA2188AIDGKR be used for voltage followers?
A: Yes, it can be used in voltage follower configurations with its rail-to-rail input/output and low offset voltage.Q: Is there any external compensation needed for the OPA2188AIDGKR?
A: No, the OPA2188AIDGKR is internally compensated and does not require any external compensation for typical applications.Q: How does the OPA2188AIDGKR compare to other op-amps in terms of power consumption?
A: The OPA2188AIDGKR is a low-power op-amp, consuming typically 10nA of quiescent current, making it suitable for battery-operated devices.Q: What is the recommended load for the OPA2188AIDGKR?
A: It is recommended to use loads of 10kΩ or higher for best performance.Q: What is the maximum offset voltage drift for the OPA2188AIDGKR?
A: The typical offset voltage drift is 0.015µV/°C, ensuring stable operation over temperature variations.This detailed description covers the pin functions, package specifications, and answers to common questions about the OPA2188AIDGKR op-amp. If you need further information or clarifications, feel free to ask!