XOPA858IDSGT Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
Texas Instruments XOPA858IDSGT is a decompensated, high-speed transimpedance amplifier with FET input and 5.5 GHz gain-bandwidth product, designed for photodiode and high-impedance sensor front-ends in optical and RF signal conditioning applications, in a small no-lead package.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- OBSOLETE
- Datasheet
- XOPA858IDSGT Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 5.5 GHz gain-bandwidth product enabling high-speed transimpedance amplification for optical and RF front-ends
- FET input stage provides ultra-low input bias current for accurate photodiode and high-impedance sensor interfaces
- Decompensated architecture allows stable closed-loop gains above a minimum gain setting, optimizing bandwidth and noise
- Compact no-lead package reduces parasitic inductance and improves high-frequency signal integrity
Applications
The XOPA858IDSGT is designed for optical receiver front-ends, photodiode transimpedance amplifiers, and high-speed data acquisition systems requiring wide bandwidth up to the GHz range. It is well-suited for lidar receivers, fiber-optic communication modules, and scientific instrumentation where FET input minimizes current noise at the signal source. Its decompensated topology allows high closed-loop gain at hundreds of MHz, enabling compact wideband signal chain designs.
Specifications
| Date Of Intro | 2018-05-08 |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What gain-bandwidth product does the XOPA858IDSGT offer and how does this benefit high-speed photodiode receivers?
The XOPA858IDSGT provides a 5.5 GHz gain-bandwidth product, enabling transimpedance gain configurations that maintain flat frequency response up to hundreds of MHz. For photodiode receivers in lidar, optical communications, or scientific instruments, this high GBP allows sufficient transimpedance gain while preserving the bandwidth needed to accurately capture fast optical pulses.
Why does the XOPA858IDSGT use a FET input stage for transimpedance amplifier designs?
The XOPA858IDSGT uses a FET input stage to achieve extremely low input bias current, typically in the picoampere range. In transimpedance amplifier circuits, low bias current minimizes the DC offset voltage error across the feedback resistor, which is critical for accurate conversion of small photodiode currents into voltage signals.
What does decompensated mean for the XOPA858IDSGT and how does it affect circuit design?
A decompensated op-amp like the XOPA858IDSGT is intentionally designed for stable operation only above a specified minimum closed-loop gain, typically 7 V/V or higher. In exchange, the device achieves significantly higher bandwidth than a unity-gain-stable design at the same GBP, making it suitable for wideband transimpedance and gain stages where minimum gain constraints are acceptable.
In which high-speed or optical system designs is the XOPA858IDSGT commonly deployed?
The XOPA858IDSGT is commonly used in lidar time-of-flight receiver front-ends, fiber-optic transceiver modules, high-speed photodetector interfaces, and RF signal chain amplifiers. Its 5.5 GHz GBP and FET input enable sub-nanosecond response times while maintaining low noise, supporting signal bandwidths of several hundred MHz in these applications.
What package does the XOPA858IDSGT use and why is it preferred in high-frequency layouts?
The XOPA858IDSGT is housed in a small no-lead (SON) package, which minimizes parasitic lead inductance compared to leaded alternatives. This low-inductance package is critical at GHz frequencies to maintain amplifier stability, reduce ground bounce, and preserve signal integrity in high-speed transimpedance and optical receiver PCB layouts.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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