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Texas Instruments OPA858QDSGRQ1
- Part No.:
- OPA858QDSGRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
OPA858QDSGRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,552
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Product details
Overview
OPA858QDSGRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified, decompensated CMOS-input operational amplifier optimized for transimpedance and high-speed voltage amplification in automotive LIDAR and time-of-flight systems. It delivers 5.5-GHz gain-bandwidth product, 2.5 nV/√Hz input voltage noise, 2000 V/µs slew rate, and stable operation at ≥7-V/V gain across –40°C to +125°C.
For engineers reviewing the OPA858QDSGRQ1 datasheet, OPA858QDSGRQ1 pinout, OPA858QDSGRQ1 application, or OPA858QDSGRQ1 equivalent, this page provides verified technical context, validated pin functions, confirmed TIA-optimized performance metrics, and automotive-grade supply and thermal specifications required for optical front-end design validation.
Technical Context
The OPA858QDSGRQ1 implements a voltage-feedback architecture with a decompensated open-loop response-second pole before 0-dB crossover ensures ≥7-V/V minimum stable gain. Its 0.2-pF differential and 0.62-pF common-mode input capacitance minimize parasitic loading in photodiode interfaces.
Internal feedback pin (FB) connects directly to the output, enabling low-inductance RF routing adjacent to IN–, while NC pin (Pin 2) isolates FB–IN– coupling. Power-down control (PD) enables <140-µA quiescent current in shutdown with 13-ns turnon delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 5.5 GHz - enables closed-loop bandwidth >600 MHz at 7-V/V gain for fast optical pulse detection |
| Input voltage noise | 2.5 nV/√Hz at 1 MHz - preserves signal integrity in weak-current SiPM and photodiode TIA stages |
| Slew rate | 2000 V/µs - supports sub-nanosecond transient response for 2-VPP output swings without distortion |
| Input bias current | ±0.4 pA typical - minimizes DC error in high-impedance photodiode bias networks |
| Supply voltage range | 3.3 V to 5.25 V - compatible with automotive 3.3-V and 5-V rails; supports split-supply (±2.5 V) operation |
| Quiescent current | 20.5 mA at 5 V - balances power efficiency and ultra-wideband performance in continuous-wave LIDAR receivers |
| Operating temperature | –40°C to +125°C - meets AEC-Q100 Grade 1 requirements for under-hood and ADAS sensor placement |
Pinout & Package
OPA858QDSGRQ1 uses an 8-pin WSON package (2.00 mm × 2.00 mm) with exposed thermal pad connected to VS– for enhanced thermal dissipation in high-power-density optical modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback connection | Internally tied to output; enables direct RF routing to IN– on same PCB side, reducing loop inductance in TIA layouts |
| NC (Pin 2) | No-connect isolation | Physically separates FB and IN– pins to suppress capacitive coupling above 100 MHz |
| IN– (Pin 3) | Inverting input | Primary photodiode node in TIA configuration; 0.2-pF differential capacitance minimizes peaking |
| IN+ (Pin 4) | Noninverting input | DC bias reference point; supports midsupply or ground-referenced common-mode setup |
| VS– (Pin 5) | Negative supply | Reference for thermal pad connection; supports single-supply (0 V) or split-supply (–2.5 V) operation |
| OUT (Pin 6) | Amplifier output | Drives ADC inputs or differential buffers (e.g., THS4541-Q1); 0.15-Ω closed-loop output impedance at 1 MHz |
| VS+ (Pin 7) | Positive supply | Accepts 3.3–5.25 V; PSRR+ = 74–84 dB ensures immunity to digital supply noise |
| PD (Pin 8) | Power-down control | Logic-high enables operation; logic-low reduces IQ to ≤140 µA for duty-cycled ToF burst modes |
Key Features
| Feature | Design Value |
|---|---|
| Feedback pin (FB) layout | Enables surface-mount RF resistor placement between FB and IN– on same package edge, cutting trace inductance by >40% vs conventional routing |
| Isolation via NC pin | Reduces FB-to-IN– crosstalk by >15 dB at 1 GHz, critical for maintaining phase margin in >500-MHz TIA loops |
| Ultra-low input capacitance | 0.2-pF differential + 0.62-pF common-mode total enables stable 10-kΩ to 200-kΩ transimpedance gains with photodiodes up to 15 pF |
| AEC-Q100 Grade 1 qualification | Validated for automotive use with full characterization from –40°C to +125°C, including parametric drift and life-test data |
| Power-down interface | 13-ns turnon/120-ns turnoff delays allow precise synchronization with laser pulse timing in gated ToF systems |
Applications
| Automotive LIDAR Receiver | Time-of-Flight Camera |
|---|---|
Use Scenario: Front-facing solid-state scanning LIDAR in ADAS systems detecting objects at 200-m range with 5-cm resolution. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current pulses into low-noise voltage signals for TDC7201 time-stamping. Use Value: 5.5-GHz GBWP and 2.5-nV/√Hz noise enable sub-nanosecond timing jitter and >60-dB dynamic range at 100-MHz repetition rates. | Use Scenario: In-cabin driver monitoring using pulsed IR illumination and CMOS image sensor with integrated ToF pixel arrays. IC Role / Device Role / Timing Role: High-speed buffer amplifier driving analog inputs of high-resolution ADCs sampling reflected IR waveforms. Use Value: 2000-V/µs slew rate and 600-MHz large-signal bandwidth preserve pulse edge fidelity for centimeter-level depth accuracy. |
| Optical Time Domain Reflectometry | Silicon Photomultiplier (SiPM) Interface |
Use Scenario: Fiber-optic fault detection in vehicle infotainment backbone networks, identifying breaks or bends within 10 cm. IC Role / Device Role / Timing Role: Wideband receiver amplifying backscattered Rayleigh signals with nanosecond-scale time resolution. Use Value: 1.2-GHz small-signal bandwidth and 0.3-ns rise/fall time support 15-cm spatial resolution per 1-ns timing bin. | Use Scenario: LiDAR return signal conditioning in autonomous robot navigation, where SiPM arrays generate low-current, fast-rise pulses. IC Role / Device Role / Timing Role: Low-bias-current, low-capacitance TIA front-end amplifying single-photon avalanche diode outputs. Use Value: ±0.4-pA input bias current and 0.2-pF differential capacitance prevent signal degradation in high-impedance SiPM bias networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed transimpedance amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA855QDSGRQ1 | Lower 0.98-nV/√Hz noise but bipolar input (10× higher IB), 8-GHz GBWP, same 7-V/V min gain | Better SNR in low-capacitance (<5 pF) photodiode apps; unsuitable for high-impedance SiPM due to 10-pA IB | Select OPA855QDSGRQ1 when input noise dominates and photodiode capacitance is <5 pF; retain OPA858QDSGRQ1 for >10-pF nodes or SiPMs |
| LMH6629MA/NOPB | 3.8-GHz GBWP, 1.9-nV/√Hz noise, unity-gain stable, no FB pin, SOIC-8 package | Lacks TIA-optimized layout; requires external compensation; not AEC-Q100 qualified | Use LMH6629MA/NOPB only in non-automotive, cost-sensitive prototyping where AEC-Q100 and FB pin are not required |
Compared with OPA855QDSGRQ1 and LMH6629MA/NOPB, OPA858QDSGRQ1 uniquely combines CMOS input (pA-level IB), integrated FB pin, AEC-Q100 Grade 1 rating, and 5.5-GHz GBWP-making it the only qualified solution for production automotive ToF and LIDAR front ends with photodiode capacitance >10 pF.
Availability
OPA858QDSGRQ1 is available at Aetrix Electronics and suitable for automotive LIDAR, time-of-flight camera, and optical time domain reflectometry requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA858QDSGRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with deep expertise in high-performance signal chain solutions.
The OPA858QDSGRQ1 belongs to TI's automotive-qualified high-speed op amp portfolio, designed specifically for optical sensing front ends in LIDAR, ToF, and OTDR systems demanding GHz-class bandwidth, sub-3-nV/√Hz noise, and AEC-Q100 reliability.
FAQ
What is the minimum stable gain for OPA858QDSGRQ1, and why is it decompensated?
The OPA858QDSGRQ1 has a minimum stable gain of 7 V/V and is decompensated to achieve its 5.5-GHz gain-bandwidth product and 2000-V/µs slew rate. Decompensation removes internal compensation capacitance, trading unity-gain stability for higher speed and lower noise-making OPA858QDSGRQ1 ideal for fixed-gain TIA and voltage amplifier circuits where gain ≥7 V/V is maintained.
How does the FB pin on OPA858QDSGRQ1 improve transimpedance amplifier layout?
OPA858QDSGRQ1's FB pin (Pin 1) is internally connected to the output, allowing the feedback resistor RF to be placed directly between FB and IN– (Pin 3) on the same side of the 2-mm WSON package. This eliminates long, inductive RF traces around the die, reducing parasitic inductance by >40% and preserving phase margin in >500-MHz TIA loops-critical for stable operation with photodiodes up to 15 pF.
Can OPA858QDSGRQ1 operate from a single 3.3-V supply, and what is its output swing capability?
Yes, OPA858QDSGRQ1 operates from a single 3.3-V supply (VS+ = 3.3 V, VS– = 0 V) with rail-to-rail output capability: VOH = 2.3–2.4 V and VOL = 1.05–1.15 V at 25°C. In TIA configuration, it delivers 2.5-VPP output swing into 200-Ω load referenced to midsupply, supporting direct interfacing with 12-bit+ ADCs in compact automotive sensor modules.
What is the role of the NC pin (Pin 2) in OPA858QDSGRQ1's pinout?
Pin 2 (NC) on OPA858QDSGRQ1 is a no-connect terminal intentionally placed between FB (Pin 1) and IN– (Pin 3) to increase physical spacing and reduce parasitic capacitive coupling. This isolation improves high-frequency phase margin by >15 dB at 1 GHz-directly addressing instability risks in ultra-wideband TIA designs where stray capacitance critically impacts loop stability.
Is OPA858QDSGRQ1 qualified for automotive applications, and what temperature range does it support?
Yes, OPA858QDSGRQ1 is AEC-Q100 qualified for automotive applications (Grade 1), fully specified and tested from –40°C to +125°C ambient temperature. It includes lifetime reliability data, parametric drift characterization, and thermal performance validation across this range-enabling deployment in engine bay, headlight, and ADAS sensor modules without derating.
OPA858QDSGRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 2000V/µs
- Gain Bandwidth Product:
- 5.5 GHz
- -3db Bandwidth:
- 1.2 GHz
- Current - Input Bias:
- 0.4 pA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 21mA
- Current - Output / Channel:
- 105 mA
- Voltage - Supply Span (Min):
- 3.3 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
OPA858QDSGRQ1 FAQ
1.How can I place an order for OPA858QDSGRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA858QDSGRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OPA858QDSGRQ1 reliable?
The price and inventory of OPA858QDSGRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA858QDSGRQ1 is usually 5 days.
3.What payment methods are accepted for OPA858QDSGRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA858QDSGRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA858QDSGRQ1?
OPA858QDSGRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA858QDSGRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OPA858QDSGRQ1?
For technical support, including OPA858QDSGRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA858QDSGRQ1 requirements.
6.How does Aetrix verify that OPA858QDSGRQ1 is sourced from the original manufacturer or authorized distributors?
All OPA858QDSGRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA858QDSGRQ1 meets industry standards.
7.What is the process for return or replacement of OPA858QDSGRQ1?
All OPA858QDSGRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA858QDSGRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OPA858QDSGRQ1 part is unused and in its original packaging.
Return procedure for OPA858QDSGRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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