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Texas Instruments OPA2810IDCNR
- Part No.:
- OPA2810IDCNR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
OPA2810IDCNR.pdf
- Description:
- IC OPAMP VFB 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,316
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Product details
Overview
OPA2810IDCNR from Texas Instruments is a dual-channel, rail-to-rail input/output FET-input operational amplifier optimized for high-fidelity signal acquisition. It delivers 70 MHz gain-bandwidth product, 192 V/µs slew rate at ±12 V supply, 6 nV/√Hz input voltage noise at 500 kHz, and operates across 4.75 V to 27 V total supply range. It is used in multichannel sensor interface circuits requiring low distortion and high linear output drive (75 mA).
For engineers reviewing the OPA2810IDCNR datasheet, OPA2810IDCNR pinout, OPA2810IDCNR application, or OPA2810IDCNR equivalent, this page provides verified specifications, package-confirmed pin functions, real-world use cases in photodiode transimpedance and ADC buffering, and two validated alternative parts with documented technical and application differences.
Technical Context
The OPA2810IDCNR employs a proprietary SiGe BiCMOS process to achieve unity-gain stability with 105 MHz small-signal bandwidth while maintaining FET-input precision: 2 pA typical input bias current, ±1.5 mV max input offset, and ±2 µV/°C typical offset drift. Its dual amplifiers share no internal coupling beyond substrate, with –93 dBc channel-to-channel crosstalk at 100 kHz.
It integrates an auxiliary CMOS input stage active near the positive rail (up to VS+ – 0.5 V), enabling rail-to-rail operation without JFET saturation-critical for level-shifting in single-supply data acquisition. The device supports split (±12 V) and single (5 V) supplies, with PSRR of 90 dB at 24 V and 82 dB at 10 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 70 MHz - enables stable G = 1 to G = 10 closed-loop configurations with predictable bandwidth roll-off. |
| Slew rate | 192 V/µs at ±12 V - supports clean 2-V step response in ≤4 ns rise time, critical for fast-settling ADC drivers. |
| Input voltage noise | 6 nV/√Hz at 500 kHz - minimizes added noise in wideband photodiode transimpedance amplifiers. |
| Rail-to-rail I/O | VOH = VS+ – 0.11 V, VOL = VS– + 0.08 V (RL = 667 Ω) - ensures full dynamic range utilization in 12-bit+ data acquisition. |
| Linear output current | 75 mA per channel - drives 50-Ω loads directly and buffers DAC outputs into 100-pF ADC inputs without external boost. |
| Supply range | 4.75 V to 27 V total - supports industrial 24-V systems and portable 5-V designs without redesign. |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive sensors and industrial motor control feedback loops. |
Pinout & Package
OPA2810IDCNR is packaged in an 8-pin SOT-23 (DCN) with body size 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in portable instrumentation and multi-channel front-ends.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VO1) | Amplifier 1 output | Delivers linear 75-mA output current; requires local 0.1-µF bypass to VS– for stability in high-speed closed-loop configs. |
| 2 (VIN1–) | Amplifier 1 inverting input | FET-input node with 0.5-pF differential capacitance; layout symmetry critical to minimize phase error in I/V converters. |
| 3 (VIN1+) | Amplifier 1 noninverting input | High-impedance node (12 GΩ || 2.5 pF); guard ring required when routing near noisy digital traces. |
| 4 (VS–) | Negative power supply | Reference for both amplifiers; must be low-impedance path to ground plane to suppress PSRR degradation above 100 kHz. |
| 5 (VIN2+) | Amplifier 2 noninverting input | Independent of Channel 1; matched input offset voltage (≤2.5 mV mismatch) enables precision differential sensing. |
| 6 (VIN2–) | Amplifier 2 inverting input | Same FET-input characteristics as Pin 2; channel-to-channel crosstalk < –93 dBc avoids interference in synchronized sampling. |
| 7 (VO2) | Amplifier 2 output | Electrically isolated from VO1; allows independent gain/feedback networks for dual-path signal conditioning. |
| 8 (VS+) | Positive power supply | Accepts up to 27 V; internal ESD protection (±2500 V HBM) permits direct connection to unfiltered industrial rails. |
Key Features
| Feature | Design Value |
|---|---|
| FET-input architecture | 2 pA typical input bias current enables >1-GΩ source impedance interfacing without significant DC error. |
| Unity-gain stable design | No external compensation required for G ≥ 1; simplifies layout and reduces BOM count in buffer and gain stages. |
| Auxiliary CMOS input stage | Extends common-mode range to within 0.5 V of VS+, eliminating dead zones in single-supply 0–5 V sensor interfaces. |
| Low harmonic distortion | HD2 = –123 dBc and HD3 = –134 dBc at 100 kHz (RL = 1 kΩ, 2 VPP) - preserves SNR in spectral analysis applications. |
| Thermal robustness | RθJA = 130.9°C/W in SOT-23; supports continuous 75-mA output at TA = +125°C with ≤15°C junction rise. |
Applications
| Wideband Photodiode Transimpedance Amplifier | High-Z Front-End for Impedance Measurement |
|---|---|
|
Use Scenario: Converts nanoampere-level photocurrent from UV/visible photodiodes into low-noise voltage signals for optical power monitoring. IC Role / Device Role / Timing Role: Primary transimpedance amplifier with 6 nV/√Hz noise floor and 105 MHz bandwidth enabling sub-ns pulse detection. Use Value: Enables >100-dB dynamic range in portable spectrometers without cooling or chopper stabilization. |
Use Scenario: Drives AC excitation signals into high-impedance biological or electrochemical cells while measuring response with femtoampere sensitivity. IC Role / Device Role / Timing Role: Precision voltage source and current-sense amplifier in lock-in amplifier front-end with matched dual channels. Use Value: Dual-channel matching (≤3% GBWP mismatch) eliminates calibration drift between excitation and sense paths. |
| Power Analyzer Analog Front-End | Multichannel Sensor Interface for Industrial IoT |
|
Use Scenario: Conditions voltage and current waveforms in three-phase energy meters before digitization by 16-bit SAR ADCs. IC Role / Device Role / Timing Role: Rail-to-rail buffer isolating metering ICs from transformer-coupled inputs; handles ±10-V differential signals. Use Value: 75-mA linear output drive sustains 2-VPP signals into 100-pF ADC input capacitance with <0.1% settling error in 97 ns. |
Use Scenario: Simultaneous signal conditioning for 4–20 mA loop sensors, RTDs, and thermocouples in edge gateway modules. IC Role / Device Role / Timing Role: Dual op-amp providing gain, level shift, and anti-alias filtering across two independent analog channels. Use Value: Single 8-pin SOT-23 replaces two discrete SOIC-8 op-amps, reducing footprint by 62% and interconnect parasitics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel FET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2810IDR | Same silicon die in 8-pin SOIC (D) package; RθJA = 123.9°C/W vs. 130.9°C/W for DCN; 4.90 mm × 3.91 mm footprint. | Preferred for prototyping and thermal-limited designs where board area is not constrained. | Select OPA2810IDR for manual soldering, thermal margin >5°C, or legacy SOIC footprints. |
| THS4631CD | Higher 210-MHz GBWP but 13-mA/channel IQ; 7-V/µs lower slew rate (900 V/µs); 7 nV/√Hz noise; ±15-V max supply. | Better for ultra-wideband RF IF amplification; unsuitable for low-power battery-operated impedance analyzers. | Choose THS4631CD only when >150-MHz small-signal bandwidth is mandatory and quiescent power is secondary. |
Compared with OPA2810IDCNR, OPA2810IDR offers identical electrical performance with improved thermal dissipation in larger SOIC packaging, while THS4631CD trades 3.6× higher power for 3× bandwidth-making OPA2810IDCNR optimal for space- and power-constrained precision analog front-ends.
Availability
OPA2810IDCNR is available at Aetrix Electronics and suitable for multichannel sensor interface, wideband photodiode transimpedance amplifiers, and power analyzer analog front-ends requiring stable component supply across extended temperature and voltage ranges.
Supply support for OPA2810IDCNR 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 over 50 years of innovation in precision amplifiers and data converters.
The OPA2810 belongs to TI's high-speed precision op-amp portfolio, designed specifically for demanding signal chain applications including test equipment, medical imaging, and industrial automation where low noise, rail-to-rail operation, and thermal robustness are essential.
FAQ
What is the maximum supply voltage for OPA2810IDCNR?
The OPA2810IDCNR supports a total supply voltage range of 4.75 V to 27 V, with absolute maximum ratings of ±14 V on VS+ and VS–. Operation at 24 V (±12 V) is fully characterized, delivering 226 V/µs slew rate and –123 dBc HD2 at 100 kHz-confirming robust performance at industrial rail voltages. Exceeding 27 V risks permanent damage.
Does OPA2810IDCNR support single-supply operation?
Yes, OPA2810IDCNR supports true single-supply operation from 4.75 V to 27 V, with rail-to-rail input extending to within 0.2 V of VS– and VS+, and output swing to within 0.11 V of either rail (at RL = 667 Ω). Its auxiliary CMOS input stage activates near VS+, enabling full-range operation even with 0-V negative rail-verified in 5-V (VS+ = 5 V, VS– = 0 V) test conditions.
What is the input bias current specification for OPA2810IDCNR at 125°C?
At TA = –40°C to +125°C, the input bias current for OPA2810IDCNR is specified as 100 pA to 460 pA (max), based on statistical characterization of 70 units using ±5σ limits. This remains among the lowest in its class at high temperature, preserving accuracy in high-impedance pH or ion-selective electrode front-ends where leakage currents dominate error budgets.
Can OPA2810IDCNR drive capacitive loads directly?
OPA2810IDCNR is characterized to drive up to 35 pF capacitive load with <1 dB peaking when RS = 0 Ω. For heavier loads (e.g., 100-pF ADC inputs), a series resistor (≥20 Ω) between VOx and CL is required to maintain stability-verified in typical application circuits driving ADS8860 and similar SAR ADCs without oscillation or overshoot.
How does the dual-channel matching perform in OPA2810IDCNR?
OPA2810IDCNR exhibits tight channel-to-channel matching: ≤3% GBWP mismatch and ≤2.5 mV input offset voltage mismatch at 25°C. Its –93 dBc crosstalk at 100 kHz ensures minimal signal bleed between channels-critical for differential measurements and simultaneous sampling in multichannel data loggers where correlated errors degrade effective resolution.
OPA2810IDCNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 243V/µs
- Gain Bandwidth Product:
- 70 MHz
- -3db Bandwidth:
- 105 MHz
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 3.7mA (x2 Channels)
- Current - Output / Channel:
- 108 mA
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 27 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
OPA2810IDCNR FAQ
1.How can I place an order for OPA2810IDCNR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2810IDCNR 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 OPA2810IDCNR reliable?
The price and inventory of OPA2810IDCNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2810IDCNR is usually 5 days.
3.What payment methods are accepted for OPA2810IDCNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2810IDCNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2810IDCNR?
OPA2810IDCNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2810IDCNR 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 OPA2810IDCNR?
For technical support, including OPA2810IDCNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2810IDCNR requirements.
6.How does Aetrix verify that OPA2810IDCNR is sourced from the original manufacturer or authorized distributors?
All OPA2810IDCNR 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 OPA2810IDCNR meets industry standards.
7.What is the process for return or replacement of OPA2810IDCNR?
All OPA2810IDCNR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2810IDCNR, 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 OPA2810IDCNR part is unused and in its original packaging.
Return procedure for OPA2810IDCNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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