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Texas Instruments OPA2810IDGKR
- Part No.:
- OPA2810IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2810IDGKR.pdf
- Description:
- IC OPAMP VFB 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,265
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Product details
Overview
OPA2810IDGKR 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 and multichannel sensor interface with ±1.5 mV max input offset and 75 mA linear output drive.
For engineers reviewing the OPA2810IDGKR datasheet, OPA2810IDGKR pinout, OPA2810IDGKR application, or OPA2810IDGKR equivalent, this page provides verified technical context, package-specific pin functions, real-world use-value in impedance measurement and ADC buffering, and validated alternative options for dual-channel FET-input op-amp selection.
Technical Context
The OPA2810IDGKR 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 JFET-input stage enables 2 pA typical input bias current and rail-to-rail operation across ±2.375 V to ±12 V (or 4.75 V to 27 V single-supply) configurations.
It integrates auxiliary CMOS input circuitry for enhanced common-mode range near the positive rail (up to VS+ – 0.5 V), supporting level-shifting applications where traditional JFET inputs saturate. Channel matching is specified at ≤3% GBWP mismatch and –93 dBc crosstalk at 100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 70 MHz - ensures stable closed-loop gain up to G = 10 with usable bandwidth >7 MHz |
| Slew rate | 192 V/µs at ±12 V supply - supports clean 2-VPP step response within 4 ns rise time |
| Input voltage noise | 6 nV/√Hz at 500 kHz - critical for low-noise photodiode and impedance measurement front-ends |
| Input bias current | 2 pA typical at 25°C - preserves signal integrity in high-Z sensor interfaces and transimpedance designs |
| Output drive | 75 mA linear sourcing/sinking - directly drives ADC inputs, DAC buffers, and optoelectronic loads |
| Rail-to-rail I/O | Operates with inputs to VS– and VS+, outputs swing within 110 mV of rails at 667 Ω load - maximizes dynamic range |
| Supply range | 4.75 V to 27 V total - supports industrial single-supply (5 V, 12 V, 24 V) and bipolar (±5 V, ±12 V) systems |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VO1) | Amplifier 1 output | Low-impedance buffered output capable of ±75 mA linear drive into resistive loads |
| 2 (VIN1–) | Amplifier 1 inverting input | FET-input node with 2 pA bias current and 0.5 pF differential capacitance |
| 3 (VIN1+) | Amplifier 1 noninverting input | High-impedance input compatible with rail-to-rail common-mode range (VS– to VS+) |
| 4 (VS–) | Negative power supply | Reference for internal biasing; must be decoupled locally to minimize PSRR degradation |
| 5 (VIN2+) | Amplifier 2 noninverting input | Independent high-Z input matched to VIN1+ with ≤2.5 mV offset mismatch |
| 6 (VIN2–) | Amplifier 2 inverting input | Matched to VIN1– with ≤3% GBWP mismatch and –93 dBc inter-channel crosstalk |
| 7 (VO2) | Amplifier 2 output | Functionally identical to VO1; supports independent dual-channel operation |
| 8 (VS+) | Positive power supply | Accepts up to +27 V; powers both amplifiers and auxiliary CMOS input stage |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable FET input | Enables direct G = 1 configuration without external compensation, reducing BOM count in buffer stages |
| Auxiliary CMOS input stage | Extends usable input common-mode range to within 0.5 V of VS+, enabling level-shifting near positive rail |
| Low 1/f noise corner | 0.42 µVrms integrated 0.1–10 Hz - critical for precision DC-coupled sensor signal conditioning |
| Extended temperature rating | Specified from –40°C to +125°C - suitable for automotive under-hood and industrial control environments |
| Harmonic distortion performance | –134 dBc HD3 at 100 kHz (RL = 1 kΩ, 2 VPP) - preserves signal fidelity in spectral analysis and power metering |
Applications
| Wideband Photodiode Transimpedance Amplifier | High-Z Front-End for Impedance Measurement |
|---|---|
|
Use Scenario: Converting nanoamp-level photocurrent from fast-response photodiodes into low-noise voltage signals for optical power monitoring. IC Role / Device Role / Timing Role: Primary transimpedance amplifier with FET input minimizing bias current error and 6 nV/√Hz noise preserving SNR. Use Value: Enables sub-picoamp resolution in laser diode feedback loops and fiber optic receiver front-ends due to 2 pA input bias and low broadband noise. |
Use Scenario: Driving AC excitation signals into high-impedance biological or electrochemical cells while measuring resulting voltage/current response. IC Role / Device Role / Timing Role: Precision voltage buffer and current source with rail-to-rail output swing and 75 mA drive capability. Use Value: Maintains signal integrity across 100 kHz bandwidth with <–100 dBc harmonic distortion, ensuring accurate phase and magnitude extraction in LCR meters. |
| Power Analyzer Analog Front-End | Multichannel Sensor Interface |
|
Use Scenario: Conditioning voltage and current channel signals prior to simultaneous sampling by high-speed ADCs in energy metering systems. IC Role / Device Role / Timing Role: Dual-channel signal conditioner providing matched gain, bandwidth, and offset for synchronized voltage/current acquisition. Use Value: ≤3% channel-to-channel GBWP mismatch and –93 dBc crosstalk ensure <0.01° phase error between channels at 50–60 Hz fundamental frequencies. |
Use Scenario: Simultaneous amplification of outputs from multiple MEMS accelerometers, pressure sensors, or RTDs in compact industrial IoT nodes. IC Role / Device Role / Timing Role: Dual op-amp providing rail-to-rail I/O, low power (3.6 mA/channel), and extended temperature operation. Use Value: Single 8-pin VSSOP package replaces two discrete SOIC-8 op-amps, reducing PCB area by 45% while maintaining 125°C operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel FET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2810IDR | VSSOP-8 (DGK) vs SOIC-8 (DR) package; identical electrical specs and pinout | SOIC-8 offers easier manual soldering and higher thermal resistance (123.9°C/W vs 177.2°C/W) | Select OPA2810IDR for legacy board compatibility or prototyping; OPA2810IDGKR preferred for space-constrained layouts |
| THS4631CD | Higher 210 MHz GBWP but 13 mA/channel IQ; no rail-to-rail input; ±15 V max supply | Better for ultra-wideband (>100 MHz) AC-coupled applications; unsuitable for low-voltage or rail-to-rail DC sensing | Choose THS4631CD only when bandwidth >105 MHz is mandatory and supply/headroom constraints allow |
Compared with OPA2810IDGKR, OPA2810IDR offers identical performance in a larger SOIC package for easier assembly, while THS4631CD trades 3.6× higher power and loss of rail-to-rail input for +140 MHz bandwidth - making OPA2810IDGKR optimal for precision, low-power, wideband DC-coupled systems.
Availability
OPA2810IDGKR is available at Aetrix Electronics and suitable for wideband photodiode transimpedance amplifiers, multichannel sensor interface modules, and power analyzer analog front-ends requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA2810IDGKR 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 90 years of innovation in precision amplifiers and signal chain solutions.
The OPA2810IDGKR belongs to TI's high-speed precision op-amp product line, engineered for data acquisition systems demanding low noise, rail-to-rail operation, and robust DC accuracy across extended temperatures.
FAQ
What is the maximum supply voltage for the OPA2810IDGKR?
The OPA2810IDGKR supports a total supply voltage range of 4.75 V to 27 V, corresponding to ±13.5 V bipolar operation or single-supply configurations up to 27 V. Absolute maximum ratings specify ±14 V total supply, but recommended operation stays within 4.75–27 V for guaranteed performance and reliability across –40°C to +125°C.
Does the OPA2810IDGKR support true rail-to-rail input and output?
Yes, the OPA2810IDGKR features rail-to-rail input and output. Inputs operate from VS– to VS+, and outputs swing to within 110 mV of each rail at 667 Ω load. The auxiliary CMOS input stage further extends usable common-mode range to within 0.5 V of VS+, enabling level-shifting applications where standard JFET inputs would saturate.
What is the input bias current specification for the OPA2810IDGKR at 125°C?
At TA = –40°C to +125°C, the OPA2810IDGKR has a maximum input bias current of 460 pA (per channel, tested at ±12 V supply). This value reflects worst-case characterization across temperature and process variation, ensuring reliable high-Z interface performance even in extreme industrial environments.
Can the OPA2810IDGKR drive capacitive loads directly?
The OPA2810IDGKR is characterized to drive up to 35 pF capacitive load with <1 dB peaking when RS = 0 Ω. For heavier loads, an isolation resistor (e.g., 10–50 Ω) between amplifier output and capacitance is recommended to maintain stability, especially in ADC input buffering or cable-driving applications.
How does the OPA2810IDGKR compare to the single-channel OPA810?
The OPA2810IDGKR is the dual-channel variant of the OPA810, sharing identical per-channel specifications: 70 MHz GBWP, 192 V/µs slew rate, 6 nV/√Hz noise, and 3.6 mA/channel IQ. Key differences include dual-amplifier integration in one VSSOP-8 package, channel-to-channel matching (≤3% GBWP mismatch), and –93 dBc crosstalk - making OPA2810IDGKR ideal for space-constrained, matched dual-path designs.
OPA2810IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-VSSOP
OPA2810IDGKR FAQ
1.How can I place an order for OPA2810IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2810IDGKR 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 OPA2810IDGKR reliable?
The price and inventory of OPA2810IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2810IDGKR is usually 5 days.
3.What payment methods are accepted for OPA2810IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2810IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2810IDGKR?
OPA2810IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2810IDGKR 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 OPA2810IDGKR?
For technical support, including OPA2810IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2810IDGKR requirements.
6.How does Aetrix verify that OPA2810IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA2810IDGKR 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 OPA2810IDGKR meets industry standards.
7.What is the process for return or replacement of OPA2810IDGKR?
All OPA2810IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2810IDGKR, 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 OPA2810IDGKR part is unused and in its original packaging.
Return procedure for OPA2810IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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