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Texas Instruments OPA2211AIDDA
- Part No.:
- OPA2211AIDDA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2211AIDDA.pdf
- Description:
- IC OPAMP GP 2 CIRC 8SOPWRPAD
- Quantity:
- Payment:
- Shipping:
Inventory:1,380
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Product details
Overview
OPA2211AIDDA from Texas Instruments is a dual-channel, precision operational amplifier optimized for high-resolution data acquisition and low-noise signal conditioning. It delivers 1.1 nV/√Hz input voltage noise density at 1 kHz, 700 ns 16-bit settling time across 10-V output swing, and rail-to-rail output with ±2.25 V to ±18 V dual-supply operation. It serves as a loop filter amplifier in PLL systems and drives 16-bit ADCs in lab instrumentation.
For engineers reviewing the OPA2211AIDDA datasheet, OPA2211AIDDA pinout, OPA2211AIDDA application, or OPA2211AIDDA equivalent, key selection criteria include ultra-low noise performance, 45 MHz gain bandwidth at unity gain, 27 V/μs slew rate, thermal stability over –40°C to +125°C, and compatibility with high-precision analog front-ends requiring <125 μV offset and 0.35 μV/°C drift.
Technical Context
The OPA2211AIDDA implements a fully differential, high-speed precision op-amp architecture with internal compensation for unity-gain stability. Its low-noise JFET input stage enables 80 nVPP (0.1–10 Hz) and 1.1 nV/√Hz (1 kHz) voltage noise, while maintaining 3.6 mA/channel quiescent current.
It supports dual- or single-supply operation (4.5 V to 36 V), features rail-to-rail output swing, and integrates an active shutdown pin (pin 8) with 2 μs turn-on and 3 μs turn-off timing. The SO PowerPAD™ package provides enhanced thermal dissipation via exposed die pad connected to V–.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 1.1 nV/√Hz at 1 kHz - enables sub-16-bit noise floor in precision DAQ front-ends |
| Settling Time (16-bit) | 700 ns for 10-V step - ensures accurate sampling in high-speed ADC drivers |
| Gain Bandwidth Product | 45 MHz at G = 1 - supports stable unity-gain buffering of wideband signals |
| Input Offset Voltage | ±125 μV max - minimizes DC error in precision sensor interfaces |
| Supply Range | ±2.25 V to ±18 V or 4.5 V to 36 V - accommodates industrial and test equipment rails |
| Slew Rate | 27 V/μs - preserves fidelity of fast transient signals without distortion |
| Output Current | ±30 mA - drives 600 Ω loads directly, eliminating external buffers |
Pinout & Package
The OPA2211AIDDA is housed in an 8-pin SO PowerPAD™ package (DDA) with exposed thermal pad on underside, requiring soldering to PCB ground or V– plane for thermal and electrical performance compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Output channel A | High-current, rail-to-rail output capable of ±30 mA drive into 600 Ω |
| +IN A (Pin 3) | Noninverting input channel A | Low-bias, low-noise JFET input with 10 GΩ || 2 pF impedance |
| –IN A (Pin 2) | Inverting input channel A | Differential input node; common-mode range extends to within 1.4 V of rails |
| OUT B (Pin 7) | Output channel B | Independent output with identical AC/DC specs as OUT A |
| +IN B (Pin 5) | Noninverting input channel B | Second precision input path; matched to channel A for dual-signal processing |
| –IN B (Pin 6) | Inverting input channel B | Matched in offset, drift, and noise to channel A for correlated measurements |
| V+ (Pin 8) | Positive power supply | Accepts up to +18 V (dual) or +36 V (single); powers both amplifiers |
| V– (Pin 4) | Negative power supply | Accepts down to –18 V (dual) or connects to GND (single); thermal pad must connect here |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range within 0.2 V of supply rails at 10 kΩ load, maximizing SNR in ADC driver stages |
| 16-bit settling in 700 ns | Enables direct interface to 1 MSPS+ SAR or sigma-delta ADCs without external settling optimization |
| 0.35 μV/°C offset drift | Reduces calibration frequency in field-deployed instrumentation operating across –40°C to +125°C |
| Active shutdown mode | Reduces quiescent current to ≤20 μA per channel, supporting low-power sleep states in portable test gear |
| SO PowerPAD™ thermal design | Junction-to-board thermal resistance of 13 °C/W enables reliable 3.6 mA/channel operation at 125°C ambient |
Applications
| Ultrasound Signal Conditioning | Semiconductor Test Equipment |
|---|---|
Use Scenario: Amplifying low-amplitude echo signals from piezoelectric transducers in portable ultrasound scanners. IC Role / Device Role / Timing Role: Low-noise preamplifier and anti-alias filter driver in analog front-end chain. Use Value: 1.1 nV/√Hz noise density preserves weak signal integrity; 700 ns settling supports 16-bit digitization of fast echo returns. | Use Scenario: Precision voltage/current sourcing and measurement in automated test equipment (ATE) for IC characterization. IC Role / Device Role / Timing Role: Output buffer and feedback amplifier in SMU (Source Measurement Unit) architecture. Use Value: ±125 μV offset and 0.35 μV/°C drift ensure <0.01% accuracy over temperature; rail-to-rail output covers full test range. |
| Data Acquisition Systems | Power Analyzer Front-End |
Use Scenario: Driving 16-bit SAR ADCs in modular DAQ modules used in lab and field instrumentation. IC Role / Device Role / Timing Role: High-fidelity ADC driver with minimized code-dependent nonlinearity. Use Value: THD+N of –136 dB prevents harmonic contamination; 45 MHz GBW maintains phase linearity up to 100 kHz. | Use Scenario: Isolated voltage sensing and current shunt amplification in three-phase power analyzers. IC Role / Device Role / Timing Role: Precision difference amplifier and level-shifting buffer before isolation stage. Use Value: CMRR ≥114 dB rejects common-mode noise from switching inverters; ±18 V supply supports wide dynamic range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDRCT | Zero-drift architecture; 0.005 μV/°C drift vs. OPA2211AIDDA's 0.35 μV/°C; higher 5.6 nV/√Hz noise | Better for DC-critical, low-frequency applications; less suitable for wideband signal chains requiring <2 nV/√Hz | Select OPA2189IDRCT when ultra-low drift dominates; choose OPA2211AIDDA when low noise and speed are primary |
| ADA4898-2ARMZ | Higher 0.95 nV/√Hz noise, 210 MHz GBW, 100 V/μs slew rate; no shutdown pin; MSOP-8 package | Optimized for video and high-speed ADC driving; lacks thermal pad and shutdown control needed in power-constrained DAQ | Choose ADA4898-2ARMZ for >100 MSPS sampling; retain OPA2211AIDDA for precision, low-noise, thermally managed designs |
Compared with OPA2189IDRCT and ADA4898-2ARMZ, the OPA2211AIDDA uniquely balances ultra-low noise (1.1 nV/√Hz), moderate drift (0.35 μV/°C), integrated shutdown, and SO PowerPAD™ thermal performance-making it optimal for 16-bit DAQ systems where noise, power, and thermal reliability co-constrain design.
Availability
OPA2211AIDDA is available at Aetrix Electronics and suitable for ultrasound scanner front-ends, semiconductor test equipment, and precision data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2211AIDDA 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 signal chain solutions.
The OPA2211AIDDA belongs to TI's OPAx211 precision op-amp family, designed specifically for high-resolution data acquisition, low-noise instrumentation, and demanding analog signal conditioning where noise, speed, and DC accuracy must coexist.
FAQ
What is the maximum supply voltage for the OPA2211AIDDA?
The OPA2211AIDDA supports a total supply voltage (V+ to V–) of up to 40 V, with recommended operating range from ±2.25 V to ±18 V (dual) or 4.5 V to 36 V (single). Absolute maximum ratings specify 40 V across supplies; exceeding this risks permanent damage. Operation at ±18 V enables full rail-to-rail output swing and optimal noise performance in high-dynamic-range applications like power analyzer front-ends.
Does the OPA2211AIDDA have a shutdown function, and how is it controlled?
Yes, the OPA2211AIDDA includes an active-high shutdown pin (Pin 8). When voltage on this pin reaches ≥(V+) – 0.35 V, both amplifiers enter high-impedance state with quiescent current ≤20 μA. Device enables when voltage drops to ≤(V+) – 3 V. Turn-on and turn-off times are 2 μs and 3 μs respectively. This feature allows dynamic power management in battery-powered DAQ modules without redesigning the analog signal path.
What is the thermal pad connection requirement for the OPA2211AIDDA DDA package?
The exposed thermal pad on the OPA2211AIDDA DDA package must be soldered to the PCB and electrically connected to V– (negative supply). TI specifies this connection for both thermal performance (RθJB = 13 °C/W) and electrical stability. Leaving the pad floating or connecting it to ground in a single-supply system may degrade PSRR, increase offset drift, and violate thermal specifications-particularly critical in +125°C industrial environments.
How does the OPA2211AIDDA achieve 16-bit settling in 700 ns?
The OPA2211AIDDA achieves 700 ns 16-bit settling (±1/2 LSB = ±0.00075%) through a combination of 27 V/μs slew rate, 45 MHz unity-gain bandwidth, low 1.1 nV/√Hz noise, and optimized internal compensation. Tested under VS = ±15 V, G = –1, 10-V step, and CL = 100 pF, this performance enables direct interfacing with 1 MSPS+ 16-bit SAR ADCs without external settling networks-reducing board area and component count in compact DAQ modules.
Is the OPA2211AIDDA pin-compatible with other devices in the OPAx211 family?
No-the OPA2211AIDDA (SO PowerPAD™, DDA) is not pin-compatible with OPA211 variants in SOIC-8 (D), VSSOP-8 (DGK), or SON-8 (DRG) packages due to differing pinouts and thermal pad implementation. While functional specifications align across the family, the DDA package assigns V+ to Pin 8 and V– to Pin 4, whereas SOIC/VSSOP/SON variants place V+ on Pin 7 and V– on Pin 4. Board-level replacement requires layout revision and thermal pad rework.
OPA2211AIDDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-SO PowerPad
OPA2211AIDDA FAQ
1.How can I place an order for OPA2211AIDDA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2211AIDDA 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 OPA2211AIDDA reliable?
The price and inventory of OPA2211AIDDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2211AIDDA is usually 5 days.
3.What payment methods are accepted for OPA2211AIDDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2211AIDDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2211AIDDA?
OPA2211AIDDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2211AIDDA 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 OPA2211AIDDA?
For technical support, including OPA2211AIDDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2211AIDDA requirements.
6.How does Aetrix verify that OPA2211AIDDA is sourced from the original manufacturer or authorized distributors?
All OPA2211AIDDA 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 OPA2211AIDDA meets industry standards.
7.What is the process for return or replacement of OPA2211AIDDA?
All OPA2211AIDDA units undergo pre-shipment inspection (PSI). If there is an issue with OPA2211AIDDA, 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 OPA2211AIDDA part is unused and in its original packaging.
Return procedure for OPA2211AIDDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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