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Texas Instruments OPA2211AIDRGT
- Part No.:
- OPA2211AIDRGT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
OPA2211AIDRGT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,842
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Product details
Overview
OPA2211AIDRGT from Texas Instruments is a dual-channel, precision operational amplifier optimized for low-noise, high-speed data acquisition and precision signal conditioning. It delivers 1.1 nV/√Hz input voltage noise density at 1 kHz, 700 ns 16-bit settling time over 10-V output swing, and rail-to-rail output with ±2.25 V to ±18 V dual-supply operation. It is used in high-resolution analog front-ends for instrumentation and test equipment.
For engineers reviewing the OPA2211AIDRGT datasheet, OPA2211AIDRGT pinout, OPA2211AIDRGT application, or OPA2211AIDRGT equivalent, key selection criteria include its 1.1-nV/√Hz noise floor, 45 MHz gain-bandwidth product at unity gain, 27 V/μs slew rate, 125 μV max offset voltage, and SO PowerPAD™ package thermal performance for high-density PCB layouts.
Technical Context
The OPA2211AIDRGT implements a fully differential, high-slew-rate architecture with internal compensation for unity-gain stability. Its low 1.1 nV/√Hz voltage noise and 1.7 pA/√Hz current noise enable high-fidelity amplification of weak signals in sensor interfaces and PLL loop filters.
It supports dual-supply operation from ±2.25 V to ±18 V (or single 4.5–36 V), features rail-to-rail output swing, and includes an active-high shutdown pin with 2 μs turn-on time-enabling power management in battery-sensitive or thermally constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 1.1 nV/√Hz at 1 kHz - enables resolution of sub-microvolt signals in precision DAQ and sensor front-ends |
| Gain-Bandwidth Product | 45 MHz at G = 1 - supports stable unity-gain buffering of wideband signals up to ~10 MHz |
| Slew Rate | 27 V/μs - ensures distortion-free amplification of fast 10-V step signals within 700 ns for 16-bit accuracy |
| Offset Voltage | 125 μV maximum - minimizes DC error in closed-loop configurations driving 16-bit ADCs |
| Supply Range | ±2.25 V to ±18 V - accommodates both low-voltage portable instruments and high-dynamic-range industrial systems |
| Output Current | ±30 mA - drives 600 Ω loads directly without external buffers in test equipment outputs |
| Shutdown Current | 20 μA max - reduces system standby power in multi-channel instrument designs |
Pinout & Package
The OPA2211AIDRGT is housed in an 8-pin SO PowerPAD™ package (DDA) with exposed thermal pad on the underside, requiring soldering to PCB ground plane for optimal thermal performance and specified electrical behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Output channel A | Amplified output of first op-amp; rail-to-rail swing supports full dynamic range utilization |
| +IN A (Pin 3) | Noninverting input A | Differential input node for channel A; high common-mode rejection (120 dB) suppresses interference |
| –IN A (Pin 2) | Inverting input A | Feedback and summing node for channel A; matched impedance critical for THD+N < –136 dB |
| +IN B (Pin 5) | Noninverting input B | Independent input for second op-amp; enables dual-path signal conditioning in compact layout |
| –IN B (Pin 6) | Inverting input B | Second feedback path; allows simultaneous gain/phase control for matched dual channels |
| OUT B (Pin 7) | Output channel B | Second rail-to-rail output; supports independent signal paths or differential drive topologies |
| V+ (Pin 8) | Positive supply | Primary power rail; accepts up to +18 V; decoupling required near pin for stability |
| V– (Pin 4) | Negative supply | Ground reference for dual supplies or negative rail; thermal pad must connect to V– |
Key Features
| Feature | Design Value |
|---|---|
| 1.1-nV/√Hz input voltage noise | Enables detection of microvolt-level sensor signals without amplifying thermal noise floor |
| 700 ns 16-bit settling time | Meets timing budget for 1-MSPS+ precision SAR ADC drivers with < ±0.5 LSB error |
| Rail-to-rail output swing | Maximizes usable dynamic range across full supply rails, improving SNR in limited-voltage systems |
| Active-high shutdown (2 μs turn-on) | Allows rapid channel enable/disable in multi-stage signal chains without interrupting system clock |
| SO PowerPAD™ thermal package | Delivers RθJB = 13°C/W - sustains 3.6 mA/channel quiescent current under continuous load at +125°C |
Applications
| Ultrasound Scanner Front-End | Semiconductor Test Equipment |
|---|---|
Use Scenario: Amplifying low-amplitude echo signals from piezoelectric transducers before digitization. IC Role / Device Role / Timing Role: Low-noise preamplifier and anti-alias filter driver in receive chain. Use Value: 1.1 nV/√Hz noise density preserves weak echo fidelity; 700 ns settling ensures accurate sampling of fast transient echoes. | Use Scenario: Driving DUT bias and sensing nodes in automated test equipment with sub-microvolt accuracy. IC Role / Device Role / Timing Role: Precision voltage/current source buffer and feedback amplifier in SMU architecture. Use Value: 125 μV max offset and 0.35 μV/°C drift minimize calibration drift; rail-to-rail output covers full compliance range. |
| X-Ray Detector Signal Chain | Lab Instrumentation DAQ |
Use Scenario: Conditioning charge pulses from scintillation detectors prior to integration and digitization. IC Role / Device Role / Timing Role: Low-noise integrator and gain stage in pulse-height analysis circuitry. Use Value: Ultra-low 80 nVPP (0.1–10 Hz) input noise prevents signal degradation during long integration windows. | Use Scenario: Buffering high-resolution DAC outputs and conditioning sensor inputs in benchtop multimeters and analyzers. IC Role / Device Role / Timing Role: Output driver for 16-/18-bit DACs and input amplifier for precision RTD/thermocouple circuits. Use Value: 45 MHz GBW and 27 V/μs slew rate support fast step response; THD+N of –136 dB maintains SFDR > 110 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Lower 0.14 nV/√Hz noise but higher 1.3 mA/channel quiescent current; no shutdown pin | Better for ultra-low-noise DC-coupled sensors; unsuitable where power cycling or thermal management is required | Select OPA2211AIDRGT when shutdown capability, thermal robustness (PowerPAD™), and balanced noise/power trade-off are needed |
| ADA4898-2ARMZ | Higher 0.9 nV/√Hz noise, 200 MHz GBW, and 275 V/μs slew rate; SOIC-8 only, no thermal pad | Better for wideband AC-coupled applications like radar IF stages; less suitable for precision DC-coupled DAQ | Select OPA2211AIDRGT for DC-accurate, low-drift, thermally managed dual-channel precision buffering |
Compared with OPA2189IDR and ADA4898-2ARMZ, the OPA2211AIDRGT uniquely combines 1.1-nV/√Hz noise, integrated shutdown, SO PowerPAD™ thermal efficiency, and guaranteed 125 μV max offset-making it optimal for space-constrained, thermally demanding, high-accuracy dual-channel instrumentation.
Availability
OPA2211AIDRGT is available at Aetrix Electronics and suitable for ultrasound scanners, semiconductor test equipment, X-ray systems, and lab instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2211AIDRGT 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPAx211 series was designed for high-accuracy, low-noise signal conditioning in test and measurement, medical imaging, and industrial DAQ systems-prioritizing noise performance, DC precision, and thermal reliability in compact packages.
FAQ
What is the maximum operating temperature range for the OPA2211AIDRGT?
The OPA2211AIDRGT is specified from –40°C to +125°C ambient temperature. This extended industrial temperature range ensures reliable operation in demanding environments such as medical imaging equipment enclosures and automated test racks with elevated thermal loads. The SO PowerPAD™ package's 13°C/W junction-to-board thermal resistance supports sustained performance at the upper limit of this range when properly mounted.
Does the OPA2211AIDRGT support single-supply operation?
Yes, the OPA2211AIDRGT supports single-supply operation from 4.5 V to 36 V. Its rail-to-rail output stage and input common-mode range extending to (V–) + 1.8 V allow full utilization of supply headroom in unipolar systems-for example, buffering a 0–5 V DAC output into a 16-bit ADC while maintaining linearity and low THD+N.
What is the purpose of the exposed thermal pad on the OPA2211AIDRGT package?
The exposed thermal pad on the OPA2211AIDRGT's SO PowerPAD™ package must be soldered to the PCB ground plane to achieve specified thermal performance (RθJB = 13°C/W) and electrical behavior. TI requires this connection to ensure proper heat dissipation under continuous 3.6 mA/channel operation and to maintain 16-bit settling accuracy and noise specifications across temperature.
How does the shutdown feature of the OPA2211AIDRGT function?
The OPA2211AIDRGT shutdown pin (Pin 8) is active-high: device enables when voltage is ≤ (V+) – 3 V, and disables when ≥ (V+) – 0.35 V. In shutdown mode, output enters high-impedance state and quiescent current drops to ≤20 μA. Turn-on time is 2 μs, enabling rapid channel activation in time-multiplexed signal chains without disrupting system timing.
Can the OPA2211AIDRGT drive a 600 Ω load while maintaining 16-bit accuracy?
Yes-the OPA2211AIDRGT delivers ±30 mA output current and maintains 700 ns 16-bit settling time into 600 Ω loads at ±15 V supply. Its rail-to-rail output swings to within 0.6 V of each rail under this condition, preserving >92% of full-scale dynamic range. THD+N remains –136 dB, ensuring SFDR compatibility with 16-bit ADCs without external buffering.
OPA2211AIDRGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 27V/µs
- Gain Bandwidth Product:
- 80 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 60 nA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 3.6mA (x2 Channels)
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SON (3x3)
OPA2211AIDRGT FAQ
1.How can I place an order for OPA2211AIDRGT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2211AIDRGT 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 OPA2211AIDRGT reliable?
The price and inventory of OPA2211AIDRGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2211AIDRGT is usually 5 days.
3.What payment methods are accepted for OPA2211AIDRGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2211AIDRGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2211AIDRGT?
OPA2211AIDRGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2211AIDRGT 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 OPA2211AIDRGT?
For technical support, including OPA2211AIDRGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2211AIDRGT requirements.
6.How does Aetrix verify that OPA2211AIDRGT is sourced from the original manufacturer or authorized distributors?
All OPA2211AIDRGT 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 OPA2211AIDRGT meets industry standards.
7.What is the process for return or replacement of OPA2211AIDRGT?
All OPA2211AIDRGT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2211AIDRGT, 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 OPA2211AIDRGT part is unused and in its original packaging.
Return procedure for OPA2211AIDRGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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