The OPA928 is a new generation, 36V, femtoampere input bias, e-trim™ operational amplifier. This device offers an ultra-low input bias current of 20fA (max) across the entire industrial temperature range, −40ºC to +85ºC. The OPA928 input bias performance is tested at production at both temperatures.
The near-zero input bias is complemented by outstanding dc precision and ac performance, including rail-to-rail input and output, low offset voltage (±5µV, typical), low offset drift (±0.1µV/°C, typical), and ultra-low current noise (0.07fA/√Hz at 0.1Hz). These features make the OPA928 an excellent choice for low-light photodiode and high source-impedance applications.
The OPA928 features an internal, high precision guard buffer to protect high impedance input traces from undesirable current leakage in sensitive applications. The OPA928 packaging and pin out is designed to support low-leakage circuit designs.
The OPA928 is the next generation OPA128.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | OPA928 36V, Femtoampere Input Bias, Precision, Rail-to-Rail Input/Output, e‑trim™ Operational Amplifier datasheet (Rev. A) | PDF | HTML | Apr 26, 2024 |
| Application note | Measurement and Calibration Techniques for Ultra-low Current Measurement Systems | PDF | HTML | Nov 13, 2024 | |
| White paper | Op Amp Offset Voltage and Bias Current Limitations | PDF | HTML | Nov 5, 2024 | |
| Certificate | OPA928EVM EU RoHS Declaration of Conformity (DoC) | Nov 30, 2022 |
For additional terms or required resources, click any title below to view the detail page where available.
The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)
The OPA928 evaluation module (EVM) provides a platform to test the performance of the OPA928 femptoampere input-bias-current operational amplifier. OPA928EVM uses advanced guarding and shielding techniques to ensure femtoampere-level printed-circuit-board (PCB) layout performance. Both (...)
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This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
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