5pcs OPA858IDSGR WSON-8-EP 5.5GHz Transresistance Amplifier FET

OPA858IDSGR / OPA858IDSGT — 5.5 GHz Transresistance Amplifier (5-Pack)

Get five units of the high-performance OPA858IDSGR / OPA858IDSGT transresistance amplifier in the compact WSON-8-EP package. With a 5.5 GHz gain-bandwidth product and de-compensated FET input topology, this IC is engineered for precision signal conversion in photodiode front-ends, optical receivers, high-speed data acquisition, and general-purpose amplification circuits where ultra-wide bandwidth and low input capacitance matter most.

Key Features

• Model Numbers: OPA858IDSGR / OPA858IDSGT
• Package: WSON-8-EP (8-lead, exposed pad)
• Gain-Bandwidth Product: 5.5 GHz
• Topology: De-compensated transresistance (transimpedance) amplifier
• Input Type: FET (field-effect transistor) — ultra-low input bias current
• Application: General purpose, photodiode amplification, optical sensing, high-speed signal processing
• Quantity: 5 pieces per order
• High-Concern Chemicals: None
• Made in Mainland China

Why Choose the OPA858 for Your Design?

The OPA858 combines an extraordinarily wide gain-bandwidth product with an FET input stage, making it ideal for applications that demand both high speed and minimal input leakage. The de-compensated architecture allows designers to achieve stable, high-gain configurations with careful external feedback network design, unlocking performance that standard op-amps simply cannot match at this frequency range.

Typical Applications

• Photodiode transimpedance amplifiers (TIA)
• Optical receiver front-ends
• High-speed data acquisition systems
• Time-of-flight (ToF) sensor signal conditioning
• LIDAR and laser ranging circuits
• Precision test & measurement instrumentation

Package Contents

• 5 × OPA858IDSGR / OPA858IDSGT IC (WSON-8-EP)

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Frequently Asked Questions

Q: What is the OPA858IDSGR / OPA858IDSGT and what package does it come in?

A: The OPA858IDSGR and OPA858IDSGT are high-speed, de-compensated transresistance (transimpedance) amplifiers featuring a FET input stage. They come in the compact WSON-8-EP (8-lead with exposed thermal pad) surface-mount package, making them suitable for space-constrained PCB designs requiring ultra-wide bandwidth performance.

Q: Why is a 5.5 GHz gain-bandwidth product important for my circuit?

A: A 5.5 GHz gain-bandwidth product (GBP) means the amplifier can maintain stable, useful gain well into the gigahertz range. This is critical for high-speed photodiode receivers, LIDAR front-ends, and optical sensing applications where signal frequencies are very high and traditional op-amps would fall short.

Q: What does "de-compensated" mean for the OPA858?

A: "De-compensated" means the amplifier is not internally compensated for unity-gain stability. It requires a minimum closed-loop gain (typically set by external feedback components) to remain stable. In exchange, it delivers significantly better bandwidth and slew rate at higher gain settings compared to fully compensated amplifiers — ideal for transimpedance amplifier (TIA) designs.

Q: How many ICs are included in this listing?

A: This listing includes a pack of 5 pieces of the OPA858IDSGR / OPA858IDSGT, giving you spares for prototyping, production runs, or replacements.