OPA858QIDSGRQ1 - 5.5GHz FET-Input TIA Op-Amp Q1 | TI
MPN: OPA858QIDSGRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
Drop-in alternatives for OPA858QIDSGRQ1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
OPA858QDSGRQ1
β Drop-Inπ Reference alternative (not in catalog)
OPA858DSGR
β Drop-Inπ Reference alternative (not in catalog)
OPA859QDSGRQ1
β Drop-Inπ Reference alternative (not in catalog)
OPA859DSGR
β Drop-Inπ Reference alternative (not in catalog)
OPA858QIDSGRQ1 Maximum Ratings & Electrical Characteristics
| Gain Bandwidth Product | 5.5 GHz |
| Minimum Stable Gain | 7 V/V |
| Input Type | FET (CMOS) |
| Amplifier Type | Voltage Feedback, Decompensated |
| Number of Channels | 1 |
| Configuration | Single-Ended |
| Typical Application | Transimpedance Amplifier (TIA), Wideband Voltage Amplifier |
| Transimpedance Gain Range | Tens to hundreds of kilo-ohms |
| Qualification | AEC-Q100 (Automotive Q1) |
| Package | 8-WSON (2x2 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | [DATA_NEEDED: operating temperature range for I grade] |
| Supply Voltage Range | [DATA_NEEDED: supply voltage range] |
| Input Voltage Noise | [DATA_NEEDED: input voltage noise density] |
| Input Bias Current | [DATA_NEEDED: input bias current] |
| Slew Rate | [DATA_NEEDED: slew rate] |
| RoHS Status | [DATA_NEEDED: RoHS status] |
OPA858QIDSGRQ1 8-wson (2x2 mm) Pin Configuration Guide
Complete pinout information for OPA858QIDSGRQ1 (8-wson (2x2 mm) package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for OPA858QIDSGRQ1.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
OPA858QIDSGRQ1 is suitable for 6 applications: Automotive Lidar Receiver TIA, Wideband Photodiode Amplification, High-Speed Voltage Amplification, Test and Measurement Front Ends, Optical Communication Receivers, Ultrasonic and Sensor Signal Chains.
Automotive Lidar Receiver TIA
The OPA858QIDSGRQ1 fits automotive lidar photodiode receivers because its 5.5-GHz GBWP and FET inputs support high closed-loop bandwidth at transimpedance gains of tens to hundreds of kilo-ohms, directly determining range resolution. As a TIA, the photodiode feeds the inverting node with a large feedback resistor; the decompensated topology at gain >= 7 V/V maximizes bandwidth per transimpedance. AEC-Q100 qualification makes it deployable in production vehicles.
Recommended
Wideband Photodiode Amplification
For optical sensing and instrumentation, the OPA858QIDSGRQ1 amplifies photodiode currents across hundreds of megahertz. Its FET inputs draw negligible bias current, preserving accuracy at high-impedance nodes, while low input capacitance preserves bandwidth. Placed immediately after the photodiode in a TIA configuration with optimized feedback resistance and compensation capacitance, it converts weak optical signals into usable voltage with high fidelity and minimal added noise.
Recommended
High-Speed Voltage Amplification
As a voltage amplifier at closed-loop gains of 7 V/V and above, the OPA858QIDSGRQ1 delivers gigahertz-class bandwidth for high-speed signal chains such as oscilloscope front ends and wideband gain blocks. The decompensated design trades unity-gain stability for maximum bandwidth-noise performance. Designers must verify noise gain across frequency, including capacitive effects at the inverting input, to guarantee phase margin per the TI stability analysis in the datasheet.
Recommended
Test and Measurement Front Ends
In bench and modular instrumentation, the OPA858QIDSGRQ1 provides the wideband, low-noise first stage that sets system noise floor and bandwidth. Its 5.5-GHz GBWP supports multi-hundred-MHz signal paths at gains of tens of V/V, and the compact 2x2 mm WSON package suits dense module layouts. Careful ground-plane design and short input traces are essential to realize datasheet-grade performance in measurement equipment.
Recommended
Optical Communication Receivers
Short-reach optical links benefit from the OPA858QIDSGRQ1 as a post-photodiode TIA stage where bandwidth in the hundreds of megahertz to gigahertz range is required. FET inputs minimize shot-noise-degrading bias currents, and the high GBWP allows tens of kilo-ohms transimpedance with usable bandwidth. The supply should be filtered with low-noise LDOs because PSRR degrades at high frequency, making post-regulation ripple rejection important.
Recommended
Ultrasonic and Sensor Signal Chains
High-frequency ultrasonic and impedance-sensing front ends use the OPA858QIDSGRQ1 for wideband gain stages following transducers. The gain-of-7 stability threshold matches typical receive-chain gains, and FET input impedance avoids loading resonant transducers. The automotive Q1 grade extends suitability into in-vehicle sensing modules such as ultrasonic park-assist receivers where AEC-Q100 components are mandated by platform requirements.
Recommended
Recommended Products Summary
Engineering reference data for OPA858QIDSGRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA858QDSGRQ1 | OPA858DSGR | OPA859QDSGRQ1 |
|---|---|---|---|---|
| Package | 8-WSON (2x2 mm) | 8-WSON (2x2 mm) - same | 8-WSON (2x2 mm) - same | 8-WSON (2x2 mm) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Gain Bandwidth Product | 5.5 GHz | 5.5 GHz | 5.5 GHz | ~1.8 GHz |
| Minimum Stable Gain | 7 V/V | 7 V/V | 7 V/V | Lower (easier to stabilize) |
| Input Type | FET (CMOS) | FET (CMOS) | FET (CMOS) | FET input |
| AEC-Q100 (Automotive Q1) | Yes | Yes | No (commercial grade) | Yes |
| Number of Channels | 1 | 1 | 1 | 1 |
| Primary Application | Wideband TIA / voltage amplifier | Wideband TIA / voltage amplifier | Wideband TIA / voltage amplifier (commercial) | Moderate-bandwidth TIA / amplifier |
Key Differentiators
- Highest GBWP in TI FET-input amplifier family (vs OPA859QDSGRQ1)
- Automotive AEC-Q100 qualification with extended temperature grade (vs OPA858DSGR)
- FET (CMOS) inputs for high-impedance nodes (vs OPA859QDSGRQ1)
Design Notes
As a decompensated amplifier stable only at gain >= 7 V/V, the OPA858QIDSGRQ1 requires full-frequency noise-gain analysis. Photodiode capacitance and stray inverting-node capacitance raise noise gain at high frequency and can erode phase margin. Place the feedback network directly at the pins, minimize inverting-node trace area, and verify stability with the TI datasheet phase-margin curves before finalizing Rf and Cf values.
The 8-WSON (2x2 mm) package has an exposed die-pad/thermal structure that must be soldered to a grounded copper pour. Use multiple thermal vias to the ground plane for heat dissipation and low-inductance grounding. Keep input and output traces short and impedance-controlled for gigahertz-class signals, and place 100 nF plus bulk supply decoupling capacitors within 2 mm of the supply pins.
Amplifier PSRR falls at high frequency, so switching-regulator ripple passes directly into the signal path. Power the OPA858QIDSGRQ1 from a low-noise LDO (e.g., TPS7A8300 or TPS7A4701) followed by ferrite-bead and ceramic-capacitor filtering. Simulate or measure the supply rail noise floor; microvolts of ripple at the amplifier supply can appear at the TIA output and limit sensitivity in lidar receivers.
Compliance Information
Q1 suffix denotes TI automotive product line with AEC-Q100 qualification. Other compliance statuses not stated in provided data - verify on TI product page.
