OPAx132 High-Speed FET-Input Operational Amplifiers

Category: Amplifiers, Electronics, Texas Instruments HighPerformance Analog

Overview of OPAx132 Operational Amplifiers

The OPAx132 series, consisting of the OPA132, OPA2132, and OPA4132, are FET-input operational amplifiers designed by Texas Instruments. These amplifiers are featured for their high-speed and excellent DC performance, supplying designers with a robust solution for a variety of applications.

Key Features

Performance: With an input bias of 50 pA Maximum and a wide bandwidth of 8 MHz, these operational amplifiers ensure high-speed operation complemented by a high slew rate of 20 V/µs. Their low noise levels at 8 nV/√Hz (1 kHz) and low distortion rates (0.00008%) contribute to their superior performance. An impressive open-loop gain of 130 dB (for 600-Ω load) alongside a wide supply range from +2.5 to ±18V enhances their versatility.

Functionality: The OPAx132 series offers low offset voltage (500 µV Maximum), ensuring accuracy and stability. Furthermore, the operational amplifiers maintain low input bias current over a wide input voltage range — a result of the input cascode circuitry — which also provides excellent common-mode rejection.

Flexibility: Available in single, dual, and quad versions with matching specifications across versions, these amplifiers allow for maximum design flexibility. The provision for high performance grades in the single and dual versions caters to more demanding applications.

Usability: Designed to be easy to use, the OPAx132 amplifiers are free from phase inversion and overload problems that beset many common FET-input operational amplifiers. They ensure stable performance in unity gain and exhibit excellent dynamic behavior across a range of load conditions.

Applications

The OPAx132 amplifiers are optimal for general-purpose, audio, data acquisition, and communications applications, particularly when encountering high source impedance. Their versatility extends to various use cases such as SAR ADC Driver, Voltage Reference Buffer, Trans-impedance Amplifier, Photodiode Amplifier, and Active Filters, as well as for integration in complex circuits.

Packaging and Operation

The dual and quad variants provide independent circuitry for minimal crosstalk and interaction, beneficial in scenarios of device overdrive or overload. These operational amplifiers are available in both DIP and SOIC packages, with the single and dual versions offered in 8-pin configurations, and the quad in 14-pin. The devices operate reliably in a temperature range from -40°C to 85°C.

Device Information and Ordering

Detailed specifications for the body size of each package are provided, indicating the dimensions for PDIP and SOIC types corresponding to each part number within the series. For comprehensive options and availability, the orderable addendum at the end of the data sheet gives guidance on selection and procurement.

Notices and Disclaimers

The datasheet concludes with an important notice covering aspects like availability, warranty, changes, usage in safety-critical applications, intellectual property rights, and other pertinent disclaimers. Users are reminded to consult these details in the context of the provided production data.