Texas Instruments

OPA4705UA

OPA4705UA Description

The OPA4705UA is a CMOS operational amplifier designed by Texas Instruments, featuring a compact 14SOIC package and four integrated circuits. This linear IC chip is engineered to deliver high performance in a variety of analog applications. Despite being marked as obsolete, the OPA4705UA remains a reliable choice for certain legacy systems and specialized applications. It operates within a supply voltage range of 4 V to 12 V, ensuring flexibility in power requirements. The device boasts a gain bandwidth product of 1 MHz, making it suitable for applications requiring moderate frequency response. With a low input bias current of 1 pA, the OPA4705UA minimizes the impact of input current on circuit performance, ensuring high accuracy in sensitive applications.

OPA4705UA Features

• Amplifier Type: CMOS
• Supply Voltage Range: 4 V to 12 V
• Gain Bandwidth Product: 1 MHz
• Input Bias Current: 1 pA
• Slew Rate: 0.6 V/µs
• Supply Current: 160 µA (per channel)
• Input Offset Voltage: 500 µV
• Output Current per Channel: 10 mA
• Number of Circuits: 4
• Package Type: Tube
• Mounting Type: Surface Mount
• Compliance: ROHS3 Compliant, REACH Unaffected

The OPA4705UA's low input bias current and moderate gain bandwidth product make it an ideal choice for applications requiring high accuracy and moderate frequency response. Its CMOS design ensures low power consumption, making it suitable for battery-powered and energy-efficient systems. The device's surface mount package facilitates easy integration into modern PCB designs.

OPA4705UA Applications

The OPA4705UA is well-suited for a variety of applications, including:

• Signal Conditioning: Ideal for amplifying and conditioning low-level signals in sensor interfaces and data acquisition systems.
• Analog Filters: Can be used to design active filters with moderate cutoff frequencies.
• Precision Amplification: Suitable for applications requiring high accuracy and low input bias current, such as precision instrumentation and medical equipment.
• Battery-Powered Devices: The low supply current makes it a good fit for portable and battery-powered applications where power efficiency is crucial.

Conclusion of OPA4705UA

The OPA4705UA, despite being marked as obsolete, continues to offer significant value in specific applications due to its unique combination of low input bias current, moderate gain bandwidth, and low power consumption. Its CMOS design and surface mount package make it a versatile choice for both legacy systems and specialized new designs. While newer models may offer enhanced performance, the OPA4705UA remains a reliable and cost-effective option for applications where its specific attributes are required.