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Texas Instruments OPA2206ADT
- Part No.:
- OPA2206ADT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2206ADT.pdf
- Description:
- OVP 40-V, LOW-POWER, LOW-NOISE,
- Quantity:
- Payment:
- Shipping:
Inventory:12,252
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Product details
Overview
OPA2206ADT from Texas Instruments is a dual-channel, precision e-trim™ operational amplifier with integrated ±40 V input overvoltage protection beyond supplies, 25 µV max input offset voltage, ±0.5 µV/°C max drift, and rail-to-rail output - designed for high-accuracy analog input modules and source measurement units operating from –40°C to +125°C.
For engineers reviewing the OPA2206ADT datasheet, OPA2206ADT pinout, OPA2206ADT application, or OPA2206ADT equivalent, this page delivers verified specifications, SOIC-8 pin mapping, real-world use cases in data acquisition and instrumentation, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The OPA2206ADT implements super-beta bipolar input transistors with TI's e-trim™ technology to achieve ultra-low offset and drift while maintaining 500 pA max input bias current and 110 fA/√Hz current noise. Its input overvoltage protection activates autonomously when common-mode voltage exceeds (V–) – 40 V or (V+) + 40 V, clamping input current to ≤10 mA without external components.
It delivers 3.6 MHz gain-bandwidth, 4 V/µs slew rate, >124 dB AOL/CMRR/PSRR across temperature, and operates from ±2.25 V to ±18 V dual supply (or 4.5 V to 36 V single supply), supporting precision signal conditioning in space-constrained industrial DAQ systems where fault resilience and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual - enables matched-pair signal processing in differential sensor interfaces or dual-path instrumentation front-ends. |
| Input Offset Voltage | ±25 µV (max) - ensures <0.01% error in 2.5 V full-scale 16-bit systems without calibration. |
| Offset Drift | ±0.5 µV/°C (max) - guarantees <1 µV total drift over 85°C ambient range, critical for uncalibrated field instruments. |
| Supply Range | ±2.25 V to ±18 V - supports operation from low-voltage portable gear to high-voltage industrial control rails. |
| Quiescent Current | 240 µA per amplifier (max) - allows dual-channel precision amplification within 500 µA total system budget. |
| Input Overvoltage Protection | ±40 V beyond supplies - eliminates need for external series resistors or clamps in analog input protection circuits. |
| Gain-Bandwidth Product | 3.6 MHz - enables stable closed-loop gain of ≥10 at 300 kHz for anti-aliasing or active filtering. |
Pinout & Package
OPA2206ADT is packaged in an 8-pin SOIC (D package), pin-compatible with industry-standard dual op-amp footprints. Thermal resistance RθJA = 124.8°C/W enables operation up to +125°C ambient with minimal derating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | High-impedance node (300 GΩ || 4.4 pF) accepting signals up to (V–) – 40 V or (V+) + 40 V with active protection. |
| –IN A (Pin 2) | Inverting input, Channel A | Matches +IN A in bias current and noise; used for feedback configuration or differential sensing. |
| +IN B (Pin 5) | Noninverting input, Channel B | Independent high-Z input identical to +IN A; enables dual-sensor or dual-gain-path designs. |
| –IN B (Pin 6) | Inverting input, Channel B | Matched to +IN B; supports independent closed-loop configurations per channel. |
| OUT A (Pin 1) | Output, Channel A | Rail-to-rail swing (V– + 0.2 V to V+ – 0.2 V @ 10 kΩ) with 4 V/µs slew rate and overload recovery in 0.2 µs. |
| OUT B (Pin 7) | Output, Channel B | Identical performance to OUT A; no crosstalk degradation (130 dB channel separation at DC). |
| V+ (Pin 8) | Positive power supply | Highest potential rail; accepts up to +20 V absolute max; powers both amplifiers and protection circuitry. |
| V– (Pin 4) | Negative power supply | Lowest potential rail; accepts down to –20 V absolute max; reference for internal bias and clamp thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated input overvoltage protection | Clamps inputs at ±40 V beyond supplies, eliminating external protection components and reducing PCB area by ≥30% in analog input modules. |
| e-trim™ offset and drift performance | ±25 µV max offset and ±0.5 µV/°C max drift enable factory-calibration-free operation in 16-bit DAQ systems over full industrial temperature range. |
| Super beta bipolar inputs | 500 pA max input bias current and 110 fA/√Hz current noise preserve accuracy in high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive bridges). |
| Rail-to-rail output with overload limiter | Delivers full dynamic range into 10 kΩ loads while limiting short-circuit current to ±25 mA, preventing thermal runaway during fault conditions. |
| EMI/RFI filtered inputs | Rejects >80 dB of RF interference up to 1 GHz (EMIRR = 120 dB at 900 MHz), ensuring stable operation in noisy motor-control or power-conversion environments. |
Applications
| Analog Input Module | Mixed I/O Module (AI/AO/DI/DO) |
|---|---|
|
Use Scenario: High-density programmable logic controller (PLC) analog input card acquiring 16 channels of ±10 V sensor signals in factory automation cabinets. IC Role / Device Role / Timing Role: Precision buffer and level-shifter for each channel, providing input overvoltage protection and low-drift gain before ADC sampling. Use Value: Eliminates discrete TVS diodes and precision resistors per channel, reducing BOM count by 4 components/channel and enabling 20% smaller PCB area. |
Use Scenario: Modular industrial I/O system integrating analog inputs, analog outputs, digital inputs, and digital outputs on a single backplane card. IC Role / Device Role / Timing Role: Dual-channel signal conditioner for AI path (channel A) and AO driver interface (channel B) with shared supply and layout symmetry. Use Value: Single OPA2206ADT replaces two discrete op-amps while maintaining channel isolation >130 dB, simplifying layout and improving inter-channel crosstalk margin. |
| Source Measurement Unit (SMU) | Digital Multimeter (DMM) |
|
Use Scenario: Benchtop SMU sourcing precise current/voltage while simultaneously measuring device-under-test response with sub-µV resolution. IC Role / Device Role / Timing Role: Front-end amplifier in the feedback loop of the force-sense architecture, rejecting common-mode noise from switching power supplies. Use Value: 0.2 µVPP 0.1–10 Hz noise and >124 dB CMRR ensure <100 nV RMS measurement floor in 1-second integration windows. |
Use Scenario: Portable handheld DMM performing 6½-digit DC voltage measurements with auto-ranging and battery-powered operation. IC Role / Device Role / Timing Role: Low-power, low-drift gain stage in the input attenuator and buffer chain, operating from ±3 V supplies. Use Value: 240 µA max quiescent current per channel extends battery life to >200 hours while maintaining 0.002% basic accuracy over –10°C to +50°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | No input overvoltage protection; lower 5.2 nV/√Hz voltage noise; 5.5 µV max offset; 550 µA IQ. | Suitable for ultra-low-noise, non-fault-prone signal chains (e.g., audio preamps), but requires external protection in industrial analog inputs. | Select OPA2189IDR only when noise dominates over fault resilience and board space permits external clamping. |
| OPA2205ADGKR | Same core architecture as OPA2206 but lacks input overvoltage protection; improved 7.2 nV/√Hz noise; identical 25 µV offset spec. | Valid drop-in replacement where overvoltage events are absent (e.g., lab-grade instrumentation), but not rated for ±40 V fault tolerance. | Choose OPA2205ADGKR for cost-sensitive, low-noise applications with controlled signal environments - never in unconditioned field inputs. |
Compared with OPA2189IDR and OPA2205ADGKR, the OPA2206ADT uniquely integrates ±40 V input protection without sacrificing offset or drift performance, making it the only option among the three qualified for direct connection to industrial sensors exposed to wiring faults or ESD transients.
Availability
OPA2206ADT is available at Aetrix Electronics and suitable for analog input modules, source measurement units, and digital multimeters requiring stable component supply, long-term calibration integrity, and robust field-deployment reliability.
Supply support for OPA2206ADT 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 innovation in precision amplifiers and industrial-grade signal-chain solutions.
The OPA2206ADT belongs to TI's e-trim™ precision op-amp family, engineered specifically for high-accuracy, fault-tolerant industrial measurement systems where long-term drift, input robustness, and low power must coexist.
FAQ
What is the maximum input voltage range supported by the OPA2206ADT?
The OPA2206ADT supports input common-mode voltages from (V–) – 40 V to (V+) + 40 V due to its integrated overvoltage protection circuitry. This allows safe operation even when input signals exceed the supply rails by up to 40 V in either polarity - a key advantage over standard op-amps like the OPA2205ADGKR, which lack this feature and require external protection.
Does the OPA2206ADT require external components for input protection?
No, the OPA2206ADT does not require external components for input overvoltage protection. Its internal protection activates automatically when input voltage exceeds (V–) – 40 V or (V+) + 40 V, limiting input current to ≤10 mA. This eliminates TVS diodes, series resistors, and clamping networks typically needed in analog front-ends - directly reducing bill-of-materials and PCB layout complexity for the OPA2206ADT.
What is the typical quiescent current of the OPA2206ADT at room temperature?
The typical quiescent current of the OPA2206ADT is 220 µA per amplifier at 25°C, with a maximum of 240 µA per amplifier across temperature and process variation. This ultra-low power consumption enables dual-channel precision amplification in battery-powered or thermally constrained applications such as portable DMMs and wireless sensor nodes using the OPA2206ADT.
Can the OPA2206ADT drive capacitive loads without instability?
Yes, the OPA2206ADT maintains stability driving capacitive loads up to 100 pF with proper layout and optional series isolation resistor (RISO). Phase margin remains >60° at 25 pF, and typical overshoot stays below 15% at 100 pF with RISO = 50 Ω - verified in Figure 5-33 and 5-34 of the OPA2206ADT datasheet. For larger loads, external compensation is recommended.
How does the OPA2206ADT compare to the OPA2205ADGKR in terms of input protection?
The OPA2206ADT includes integrated ±40 V input overvoltage protection, while the OPA2205ADGKR has no such protection and must be externally safeguarded against overvoltage events. Both share identical offset (±25 µV max) and drift (±0.5 µV/°C max) specs, but only the OPA2206ADT is rated for direct connection to unconditioned industrial sensor lines - a critical distinction in harsh-environment applications.
OPA2206ADT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 3.6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 4 µV
- Current - Supply:
- 220µA (x2 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2206ADT FAQ
1.How can I place an order for OPA2206ADT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2206ADT 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 OPA2206ADT reliable?
The price and inventory of OPA2206ADT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2206ADT is usually 5 days.
3.What payment methods are accepted for OPA2206ADT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2206ADT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2206ADT?
OPA2206ADT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2206ADT 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 OPA2206ADT?
For technical support, including OPA2206ADT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2206ADT requirements.
6.How does Aetrix verify that OPA2206ADT is sourced from the original manufacturer or authorized distributors?
All OPA2206ADT 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 OPA2206ADT meets industry standards.
7.What is the process for return or replacement of OPA2206ADT?
All OPA2206ADT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2206ADT, 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 OPA2206ADT part is unused and in its original packaging.
Return procedure for OPA2206ADT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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