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Texas Instruments OPA810IDT
- Part No.:
- OPA810IDT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA810IDT.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:417
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Product details
Overview
OPA810IDT from Texas Instruments is a single-channel, FET-input, voltage-feedback operational amplifier optimized for high-fidelity data acquisition and signal conditioning. It delivers 140MHz small-signal bandwidth, 200V/µs slew rate, rail-to-rail input/output swing, and 6.3nV/√Hz input voltage noise at 500kHz - enabling precision wideband photodiode transimpedance amplification and high-Z sensor interfacing in industrial power analyzers and multichannel DAQ systems.
For engineers reviewing the OPA810IDT datasheet, OPA810IDT pinout, OPA810IDT application, or OPA810IDT equivalent, key selection criteria include its picoampere-level input bias current (2pA typ), ±500µV max input offset, extended –40°C to +125°C operation, and SOIC-8 package compatibility with high-speed layout requirements for ADC driver and optoelectronic interface designs.
Technical Context
The OPA810IDT employs a proprietary SiGe BiCMOS process to achieve unity-gain stability with 70MHz gain-bandwidth product while maintaining ultra-low input current and low-noise performance. Its dual-stage input architecture combines a main JFET stage (for low bias current and high impedance) and an auxiliary CMOS stage (for enhanced common-mode range near supply rails).
It supports single-supply (5V) and split-supply (±12V) operation across 4.75V–27V total supply range, with rail-to-rail output delivering up to 75mA linear sourcing/sinking into 667Ω loads. Input overdrive recovery time is 35ns at ±12V supply, and output impedance remains below 7mΩ at 100kHz for stable driving of capacitive loads ≤10pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 140MHz at G = 1, enabling accurate amplification of fast analog signals without phase distortion in front-end signal chains |
| Slew rate | 200V/µs (at ±5V supply), supporting clean 2VPP step response within 4ns rise/fall time for high-dynamic-range applications |
| Input voltage noise | 6.3nV/√Hz at 500kHz, critical for low-noise transimpedance amplifiers in photodiode and impedance measurement circuits |
| Input bias current | 2pA typical, allowing direct connection to high-impedance sensors (e.g., pH electrodes, piezoresistive elements) without significant error |
| Rail-to-rail I/O | Output swings within 110mV of rails (at RL = 667Ω), maximizing dynamic range when interfacing with 18-bit ADCs like ADS9110 |
| Quiescent current | 3.7mA per channel, balancing speed and power efficiency for thermally constrained industrial modules |
| Operating temperature | –40°C to +125°C, qualified for use in automotive under-hood, motor control feedback, and industrial power analyzer environments |
Pinout & Package
OPA810IDT is packaged in an 8-pin SOIC (D package), 4.9mm × 6mm body size, with exposed pad not present. Pin functions are validated per TI SBOS799E Rev E (August 2024).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 NC | No internal connection | Unused pins; must be left floating or tied to ground only if required by PCB mechanical constraints - no electrical function |
| 2 VIN– | Inverting input | High-impedance FET node (12GΩ||2pF); connects to feedback network in transimpedance or inverting gain configurations |
| 3 VIN+ | Noninverting input | High-impedance FET node; used for reference-biased sensor interfaces or unity-gain buffer configurations |
| 4 VS– | Negative supply | Accepts ground (single-supply) or negative rail (split-supply); decoupling capacitor (0.1µF) required adjacent to pin |
| 6 VO | Output | Capable of sourcing/sinking 75mA linearly; drives ADC inputs, DAC buffers, or optoelectronic components directly |
| 7 VS+ | Positive supply | Supports 4.75V–27V total supply; PSRR >90dB at ±12V enables robust operation in noisy industrial power domains |
Key Features
| Feature | Design Value |
|---|---|
| FET-input stage | 2pA typical input bias current enables direct connection to photodiodes, electrochemical sensors, and high-Z voltage probes without guard rings |
| Rail-to-rail output drive | 75mA linear output current supports driving heavy capacitive loads (≤10pF) and resistive loads down to 667Ω while maintaining rail proximity |
| Low-noise architecture | 6.3nV/√Hz input voltage noise + 5fA/√Hz input current noise optimizes SNR in wideband transimpedance amplifiers up to 100kHz |
| Extended temperature range | Specified from –40°C to +125°C with <10µV/°C offset drift ensures stable calibration in uncooled industrial enclosures and motor control cabinets |
| Unity-gain stable | 140MHz small-signal bandwidth at G = 1 eliminates need for external compensation in high-speed buffer and line-driver applications |
Applications
| Wideband Photodiode TIA | Analog Input Module |
|---|---|
Use Scenario: Amplifying low-current photocurrent from high-speed photodiodes in optical power meters or laser pulse detection. IC Role / Device Role / Timing Role: Transimpedance amplifier with 140MHz bandwidth and 6.3nV/√Hz noise floor to preserve signal integrity. Use Value: Enables sub-nanosecond pulse capture and >100dB dynamic range in optical sensing without external filtering or gain staging. |
Use Scenario: Signal conditioning front end for 18-bit, 2MSPS data acquisition systems such as power analyzers and energy monitors. IC Role / Device Role / Timing Role: High-linearity ADC driver with rail-to-rail output swing and 75mA drive capability into ADS9110 reference input. Use Value: Maintains full ENOB across full-scale input range while rejecting supply noise via 90dB PSRR at ±12V operation. |
| Impedance Measurement | Optoelectronic Driver |
Use Scenario: Precision AC excitation and response sensing in LCR meters and bioimpedance analyzers operating up to 100kHz. IC Role / Device Role / Timing Role: Low-bias-current voltage follower and differential receiver with <500µV offset and 2.5µV/°C drift. Use Value: Minimizes measurement error in high-impedance electrode interfaces (e.g., skin-contact biosensors) across temperature extremes. |
Use Scenario: Driving VCSELs or high-capacitance LED arrays in industrial time-of-flight (ToF) sensors and fiber-optic transceivers. IC Role / Device Role / Timing Role: Fast-settling (47ns to 0.1%) output buffer with 200V/µs slew rate and low-output impedance (<7mΩ @ 100kHz). Use Value: Reduces pulse distortion and timing jitter in digital light pulses, improving distance resolution in ToF systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed FET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2810 | Dual-channel variant with identical specs per channel; same SOIC-8, SOT-23-5, SC70-5 package options | Used where space-constrained dual-signal paths (e.g., differential sensor pairs) require matched AC performance | Select OPA2810 when board area allows dual-channel integration and channel-to-channel matching is critical |
| THS4631 | Higher slew rate (900V/µs) but higher quiescent current (13mA) and 7nV/√Hz noise; ±15V max supply | Better suited for ultra-fast pulse amplification where power budget permits; less optimal for battery-powered DAQ | Choose THS4631 only when >500MHz effective bandwidth is required and thermal/power margins allow 3.5× higher IQ |
Compared with OPA2810, the OPA810IDT offers single-channel optimization for footprint-sensitive designs; versus THS4631, it provides superior power efficiency and lower noise at the cost of reduced slew rate - making OPA810IDT ideal for precision high-speed industrial DAQ where thermal headroom and SNR are prioritized.
Availability
OPA810IDT is available at Aetrix Electronics and suitable for wideband photodiode transimpedance amplifiers, analog input modules for 18-bit data acquisition, and impedance measurement systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA810IDT 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 decades of expertise in high-performance op-amps and precision signal-chain solutions.
The OPA810IDT belongs to TI's high-speed precision op-amp product line, engineered specifically for demanding data-acquisition front ends, sensor interfaces, and optical signal conditioning where low noise, low bias current, and rail-to-rail operation are essential.
FAQ
What is the maximum supply voltage for the OPA810IDT?
The OPA810IDT supports a total supply voltage range of 4.75V to 27V. Absolute maximum ratings specify ±14V for bipolar supplies (VS+ to VS–), meaning the device can operate up to ±12V (24V total) continuously. Exceeding ±14V risks permanent damage, and operation above 27V total supply violates absolute maximum conditions per TI SBOS799E.
Does the OPA810IDT support single-supply operation?
Yes, the OPA810IDT supports true single-supply operation from 4.75V to 27V. With rail-to-rail input and output stages, it functions correctly with VS– = 0V and VS+ = 5V, 12V, or 24V. Input common-mode range extends 0.3V beyond both rails, and output swings to within 110mV of each rail under 667Ω load - enabling direct interfacing with 3.3V or 5V ADCs and microcontrollers.
What is the input bias current specification for the OPA810IDT?
The OPA810IDT features a typical input bias current of 2pA, with a maximum of 20pA over temperature (–40°C to +125°C). This ultra-low bias current stems from its FET-input architecture and makes the device suitable for high-impedance applications such as photodiode transimpedance amplifiers, pH probe interfaces, and piezoelectric sensor conditioning where leakage-induced errors must be minimized.
Can the OPA810IDT drive capacitive loads?
The OPA810IDT is characterized to drive capacitive loads up to 10pF with minimal peaking (<3dB), provided the source resistance (RS) is 0Ω. For larger capacitive loads, external isolation (e.g., series resistor ≥10Ω) is recommended. The device's closed-loop output impedance is 7mΩ at 100kHz, ensuring stability in ADC driver and filter interface roles where moderate capacitance is unavoidable.
Is the OPA810IDT unity-gain stable?
Yes, the OPA810IDT is explicitly unity-gain stable, with a small-signal bandwidth of 140MHz at G = 1. Its internal compensation ensures stable operation without external components in buffer, transimpedance, or inverting amplifier configurations. This eliminates design risk associated with phase margin tuning and simplifies layout for high-speed signal paths in industrial DAQ and optical sensing applications.
OPA810IDT 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:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 192V/µs
- Gain Bandwidth Product:
- 70 MHz
- -3db Bandwidth:
- 140 MHz
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 3.7mA
- Current - Output / Channel:
- 100 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
OPA810IDT FAQ
1.How can I place an order for OPA810IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA810IDT 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 OPA810IDT reliable?
The price and inventory of OPA810IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA810IDT is usually 5 days.
3.What payment methods are accepted for OPA810IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA810IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA810IDT?
OPA810IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA810IDT 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 OPA810IDT?
For technical support, including OPA810IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA810IDT requirements.
6.How does Aetrix verify that OPA810IDT is sourced from the original manufacturer or authorized distributors?
All OPA810IDT 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 OPA810IDT meets industry standards.
7.What is the process for return or replacement of OPA810IDT?
All OPA810IDT units undergo pre-shipment inspection (PSI). If there is an issue with OPA810IDT, 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 OPA810IDT part is unused and in its original packaging.
Return procedure for OPA810IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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