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OPA277U

Name: OPA277U
Rating: 4.7 (12 reviews)

IC OPAMP GP 1 CIRCUIT 8SOIC

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資料表 OPA277U DataSheet
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規格

Part Status	Active
Amplifier Type	Standard (General Purpose)
Number of Circuits	1
Slew Rate	0.8V/µs
Gain Bandwidth Product	1 MHz
Current - Input Bias	500 pA
Voltage - Input Offset	10 µV
Current - Supply	790µA
Current - Output / Channel	35 mA
Voltage - Supply Span (Min)	4 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC
Base Product Number	OPA277

概述

Description

The OPA277U is a precision operational amplifier designed for applications requiring low offset voltage, low noise, and high accuracy. It features a wide supply voltage range from ±2.5V to ±18V, enabling compatibility with various power supply configurations. The amplifier boasts a low input offset voltage of 50 µV (max), low bias current, and a high common-mode rejection ratio (CMRR), making it ideal for precision signal processing.
With a slew rate of 0.5 V/µs and a bandwidth of 1 MHz at a gain of 1, the OPA277U offers versatility in both low-speed and high-speed applications. Its low distortion characteristics are beneficial in audio processing and sensor applications, while the low noise figure ensures minimal interference in sensitive systems.
The OPA277U is housed in an 8-pin SOIC package, providing compact integration into circuit designs. Overall, it’s well-suited for instrumentation, data acquisition systems, and medical equipment, where high performance and reliability are paramount.

Features

The OPA277U is a precision operational amplifier known for its low noise and low distortion performance. Key features include:
1. Low Offset Voltage: Typically 50 µV, ensuring accurate signal amplification.
2. Low Drift: Offset voltage drift is around 0.1 µV/°C, enhancing stability over temperature variations.
3. Wide Bandwidth: Unity-gain bandwidth of 8 MHz, suitable for various applications.
4. Low Noise: Voltage noise density at 0.1 Hz to 10 Hz is minimal, contributing to high fidelity in audio and sensor applications.
5. High Slew Rate: Approximately 16 V/µs, facilitating rapid signal changes.
6. Rail-to-Rail Output: Allows output to swing close to the supply rails, maximizing dynamic range.
7. Power Supply Range: Operates from ±2.5 V to ±15 V, offering flexibility in design.
8. Low Power Consumption: Draws only 700 µA per amplifier, making it suitable for battery-operated devices.
These features make the OPA277U ideal for precision applications in instrumentation, medical devices, and audio equipment.

Package

The OPA277U is a precision operational amplifier available in a standard dual-in-line package (DIP) type, specifically in an 8-lead configuration. It's designed for high-performance applications, offering low noise and offset voltage.

Pinout

The OPA277U is a precision operational amplifier packaged in a 8-pin SOIC (Small Outline Integrated Circuit).
Pin Count and Functions:
1. Pin 1 (Offset Null): Adjusts the output offset voltage.
2. Pin 2 (Inverting Input, -): The inverting input terminal for signal.
3. Pin 3 (Non-Inverting Input, +): The non-inverting input terminal for signal.
4. Pin 4 (V- or Negative Supply): Connects to the negative power supply.
5. Pin 5 (Output): The output terminal of the amplifier.
6. Pin 6 (V+ or Positive Supply): Connects to the positive power supply.
7. Pin 7 (NC): Not connected; typically left floating.
8. Pin 8 (NC): Not connected; typically left floating.
The OPA277U is designed for high precision applications, featuring low offset voltage, low noise, and a wide supply voltage range.

Manufacturer

The OPA277U is manufactured by Texas Instruments (TI), a multinational technology company based in the United States. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. The company is well-known for its analog and embedded processing products, which are used in a wide range of applications, including automotive, industrial, communications, and consumer electronics. TI is recognized for its innovation and leadership in the semiconductor industry, providing solutions that enable the development of advanced electronic systems and devices.

Application

The OPA277U is a precision operational amplifier used in various applications, including audio equipment, sensor signal conditioning, medical instrumentation, data acquisition systems, and precision voltage references. Its features, such as low noise, low offset voltage, and wide bandwidth, make it suitable for tasks requiring high accuracy and stability in signal processing.

Equivalent

The OPA277U operational amplifier can be replaced by several equivalent products, including the OPA2134, OPA2227, and OPA134. Other potential substitutes are the LMP7701 and AD797, depending on the application requirements such as bandwidth, noise, and power supply specifications. Always verify compatibility based on specific circuit needs.