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Texas Instruments OPA2810IDT
- Part No.:
- OPA2810IDT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2810IDT.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:983
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Product details
Overview
OPA2810IDT 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, and 6 nV/√Hz input voltage noise at 500 kHz - enabling precision wideband photodiode transimpedance amplification, multichannel sensor interface, and ADC driver applications with ±12-V or single 5-V supply operation.
For engineers reviewing the OPA2810IDT datasheet, OPA2810IDT pinout, OPA2810IDT application, or OPA2810IDT equivalent, this page provides verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options - all grounded in TI's SBOS789C production data sheet (Rev C, Feb 2020).
Technical Context
The OPA2810IDT employs a proprietary SiGe BiCMOS process to achieve unity-gain stability with 105 MHz small-signal bandwidth while maintaining low 3.6 mA/channel quiescent current. Its dual FET-input stage delivers 2-pA typical input bias current and rail-to-rail output swing capable of sourcing/sinking 75 mA linearly into 667-Ω loads.
It features two distinct input stages: a primary JFET stage for ultra-low noise and bias current, and an auxiliary CMOS stage active near the positive rail (VS+ – 1 V), providing extended common-mode range beyond the main stage's limit of VS+ – 2.5 V. Channel-to-channel GBWP mismatch is specified at ≤3%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 70 MHz - sets closed-loop bandwidth limit for G ≥ 1 configurations; enables stable 20-MHz operation at G = 3.5 |
| Slew rate | 192 V/µs (±12-V supply) - supports full-scale 8-V step settling in <100 ns, critical for fast ADC buffering |
| Input voltage noise | 6 nV/√Hz at 500 kHz - preserves SNR in photodiode and impedance measurement front-ends |
| Rail-to-rail I/O | Output swings within 110 mV of rails (RL = 667 Ω); input accepts signals from VS– – 0.2 V to VS+ + 0.2 V |
| Supply range | 4.75 V to 27 V total - supports ±2.375 V to ±12 V split supplies or 5-V to 24-V single-ended operation |
| Quiescent current | 3.6 mA per channel - balances speed and power for battery-aware or thermally constrained designs |
| Harmonic distortion | HD2 = –123 dBc, HD3 = –134 dBc @ 100 kHz, 2-VPP, RL = 1 kΩ - ensures minimal spectral contamination in precision AC signal paths |
Pinout & Package
OPA2810IDT is supplied in an 8-pin SOIC (D) package with 4.90 mm × 3.91 mm body size, rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VO1 | Amplifier 1 output | Delivers linear 75-mA drive; rail-to-rail swing enables direct connection to SAR ADC inputs or DAC buffers |
| 2 - VIN1– | Amplifier 1 inverting input | FET-input node with 2-pA bias current; requires matched trace impedance in high-Z transimpedance layouts |
| 3 - VIN1+ | Amplifier 1 noninverting input | High-impedance node (12 GΩ || 2.5 pF); sensitive to PCB leakage - guard ring recommended |
| 4 - VS– | Negative supply | Return path for both channels; separate ground plane routing minimizes crosstalk and PSRR degradation |
| 5 - VIN2+ | Amplifier 2 noninverting input | Independent high-Z input; channel matching ensures <2.5-mV offset mismatch for differential sensing |
| 6 - VIN2– | Amplifier 2 inverting input | Matches VIN1– performance; enables dual-channel synchronous acquisition without calibration drift |
| 7 - VO2 | Amplifier 2 output | Identical drive capability to VO1; supports independent load driving or parallel output summation |
| 8 - VS+ | Positive supply | Accepts up to 27 V; PSRR >90 dB ensures immunity to supply ripple in noisy industrial environments |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable FET input | Enables direct use in G = 1 buffer, transimpedance, and level-shifting circuits without external compensation |
| 75 mA linear output drive | Drives heavy capacitive loads (e.g., ADC input capacitance + PCB trace) while maintaining 0.1% settling in <100 ns |
| Extended common-mode range | Main JFET stage operates to VS+ – 2.5 V; auxiliary CMOS stage extends usable input range to VS+ – 0.5 V |
| Low 5 fA/√Hz input current noise | Preserves signal integrity in high-impedance (>1 MΩ) sensor interfaces where current noise dominates total error |
| –40°C to +125°C operation | Validated across full temperature range for automotive engine control, power analyzer, and industrial motor feedback systems |
Applications
| Wideband Photodiode Transimpedance Amplifier | High-Z Front-End for Impedance Measurement |
|---|---|
|
Use Scenario: Converting nanoamp-level photocurrent from UV/visible photodiodes into low-noise voltage signals for lock-in detection or optical power monitoring. IC Role / Device Role / Timing Role: Primary transimpedance amplifier with 6 nV/√Hz voltage noise and 5 fA/√Hz current noise minimizing total input-referred noise floor. Use Value: Enables sub-picoamp resolution at 100-kHz bandwidth without cooling or exotic guarding - directly supported by 2-pA input bias and rail-to-rail output swing. |
Use Scenario: Driving AC excitation signals into biological tissue or electrochemical cells while measuring resulting voltage/current response with femtoamp sensitivity. IC Role / Device Role / Timing Role: Precision voltage-controlled current source (V-I converter) and synchronous demodulator front-end amplifier. Use Value: 70-MHz GBWP and 192-V/µs slew rate support multi-frequency EIS sweeps up to 10 MHz; low THD preserves harmonic fidelity during complex impedance analysis. |
| Power Analyzer Analog Front-End | Multichannel Sensor Interface |
|
Use Scenario: Conditioning voltage and current sense signals in three-phase energy meters and grid-edge inverters requiring simultaneous sampling and isolation. IC Role / Device Role / Timing Role: Dual-channel signal conditioner - one channel for shunt-based current sensing, second for transformer-coupled voltage sensing. Use Value: Matched channel performance (≤3% GBWP mismatch, ≤2.5-mV offset mismatch) ensures phase coherence and amplitude tracking across voltage/current paths at 50/60 Hz and harmonics. |
Use Scenario: Simultaneous amplification of outputs from multiple piezoresistive, capacitive, or MEMS sensors in condition-monitoring gateways or IoT edge nodes. IC Role / Device Role / Timing Role: Dual-channel, low-power, high-speed signal conditioner with independent rail-to-rail I/O for mixed-supply sensor subsystems. Use Value: 3.6-mA/channel quiescent current enables always-on multichannel sensing; 125°C rating supports deployment inside enclosures with elevated ambient temperatures. |
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 |
|---|---|---|---|
| OPA2810DR | Same silicon die, 8-pin SOIC package with different tape-and-reel marking (DR vs IDT); identical electrical specs and thermal performance | No functional difference; DR variant used in TI's standard distribution channel; IDT is same device with alternate ordering code | Select OPA2810IDT when sourcing from authorized distributors specifying D-package with IDT suffix; no design change required |
| THS4631D | Higher 210-MHz GBWP but 13-mA/channel IQ; 7-V/µs lower slew rate (900 V/µs); higher 7-nV/√Hz noise; not rail-to-rail output | Better suited for ultra-wideband RF IF amplification; unsuitable for rail-to-rail output or low-power portable instrumentation | Choose THS4631D only if bandwidth >105 MHz is mandatory and power budget allows 3.6× higher per-channel current |
Compared with OPA2810IDT, OPA2810DR offers identical performance with alternate packaging logistics, while THS4631D trades 3.6× higher power and loss of rail-to-rail output for +140 MHz bandwidth - making OPA2810IDT optimal for precision, low-power, wideband analog front-ends where output swing and efficiency are critical.
Availability
OPA2810IDT is available at Aetrix Electronics and suitable for wideband photodiode transimpedance amplifiers, multichannel sensor interface systems, and power analyzer analog front-ends requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA2810IDT 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 high-performance op-amps and precision signal-chain solutions.
The OPA2810IDT belongs to TI's high-speed FET-input op-amp product line, engineered specifically for wideband, low-noise, rail-to-rail signal conditioning in data acquisition, test equipment, and industrial sensing applications.
FAQ
What is the maximum supply voltage for OPA2810IDT?
The OPA2810IDT supports a total supply voltage range of 4.75 V to 27 V, with absolute maximum ratings of ±14 V on bipolar supplies. This allows operation from ±2.375 V to ±12 V split supplies or single 5-V to 24-V configurations - all validated across –40°C to +125°C.
Does OPA2810IDT support rail-to-rail output with heavy loads?
Yes, OPA2810IDT delivers rail-to-rail output swing while sourcing or sinking up to 75 mA linearly into 667-Ω loads at 25°C. Output voltage range is specified as VS+ – 0.11 V (high) and VS– + 0.08 V (low) under those conditions - confirmed in TI's SBOS789C datasheet Section 7.5.
What is the input bias current specification for OPA2810IDT at 125°C?
At TA = –40°C to +125°C, the input bias current for OPA2810IDT is specified as 100 pA (typical) to 460 pA (max) under ±12-V supply conditions. This remains among the lowest in its class, preserving accuracy in high-impedance sensor interfaces across full industrial temperature range.
Can OPA2810IDT drive ADC inputs directly?
Yes, OPA2810IDT is explicitly characterized for driving ADC inputs: its 75-mA linear output drive, 192-V/µs slew rate, and 0.1% settling time of 97 ns (for 8-V step) meet timing requirements of 16-bit SAR ADCs sampling at ≥10 MSPS. TI's datasheet Figure 48 shows direct connection to ADS8860.
Is OPA2810IDT pin-compatible with other dual op-amps in SOIC-8?
No - OPA2810IDT uses TI's standard dual op-amp pinout (VO1, VIN1–, VIN1+, VS–, VIN2+, VIN2–, VO2, VS+), which differs from industry-standard pinouts like LM358 or TL072. Layout must follow the exact pin mapping shown in Section 6 of SBOS789C; no drop-in replacement is possible without PCB revision.
OPA2810IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 8-SOIC
OPA2810IDT FAQ
1.How can I place an order for OPA2810IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2810IDT 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 OPA2810IDT reliable?
The price and inventory of OPA2810IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2810IDT is usually 5 days.
3.What payment methods are accepted for OPA2810IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2810IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2810IDT?
OPA2810IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2810IDT 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 OPA2810IDT?
For technical support, including OPA2810IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2810IDT requirements.
6.How does Aetrix verify that OPA2810IDT is sourced from the original manufacturer or authorized distributors?
All OPA2810IDT 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 OPA2810IDT meets industry standards.
7.What is the process for return or replacement of OPA2810IDT?
All OPA2810IDT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2810IDT, 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 OPA2810IDT part is unused and in its original packaging.
Return procedure for OPA2810IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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