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Texas Instruments OPA2206ADGKR
- Part No.:
- OPA2206ADGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2206ADGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,147
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Product details
Overview
OPA2206ADGKR from Texas Instruments is a dual-channel, precision e-trim™ operational amplifier with integrated ±40 V input overvoltage protection beyond supplies, 25 µV max offset voltage, ±0.5 µV/°C max drift, 500 pA max input bias current, and rail-to-rail output - designed for high-accuracy analog input modules in programmable logic controllers and source measurement units.
For engineers reviewing the OPA2206ADGKR datasheet, OPA2206ADGKR pinout, OPA2206ADGKR application, or OPA2206ADGKR equivalent, this page delivers verified specifications, SOIC-8 package details, dual-channel pin mapping, and validated alternatives for industrial instrumentation, data acquisition, and mixed-signal front-end design where input fault tolerance and low-drift performance are critical.
Technical Context
The OPA2206ADGKR implements super-beta bipolar input transistors with TI's e-trim™ technology to achieve ultra-low offset and drift while maintaining 8 nV/√Hz voltage noise and 110 fA/√Hz current noise. Its input overvoltage protection activates when signals exceed (V–) – 40 V or (V+) + 40 V, clamping input current to ≤10 mA without external components.
It operates from ±2.25 V to ±18 V dual supply (or 4.5 V to 36 V single supply), delivers 3.6 MHz gain-bandwidth, 4 V/µs slew rate, and >124 dB AOL/CMRR/PSRR across –40°C to +125°C - enabling stable, high-precision closed-loop operation in noisy, wide-temperature industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual independent amplifiers - enables compact two-channel signal conditioning without cross-talk. |
| Input Offset Voltage (max) | ±25 µV - ensures <0.01% error in 2.5 V full-scale 16-bit systems at room temperature. |
| Offset Drift (max) | ±0.5 µV/°C - contributes <6 µV total drift over –40°C to +125°C, critical for uncalibrated field instruments. |
| Input Bias Current (max) | 500 pA - supports high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive bridges) without significant loading error. |
| Gain-Bandwidth Product | 3.6 MHz - allows stable unity-gain buffer or 10× gain configuration up to 360 kHz for anti-aliasing or sensor excitation. |
| Quiescent Current (max) | 240 µA per channel - enables dual-channel precision amplification in battery-powered DAQ nodes with <500 µA total supply draw. |
| Input Overvoltage Protection | ±40 V beyond supplies - eliminates need for external series resistors or clamps in industrial I/O modules exposed to wiring faults or ESD. |
Pinout & Package
OPA2206ADGKR is packaged in an 8-pin SOIC (D package), 3.9 mm × 4.9 mm body, with standard JEDEC MS-012AC footprint and 1.27 mm pitch. Pin 1 is OUT A; Pin 4 is V–; Pin 5 is +IN B; Pin 6 is –IN B; Pin 7 is OUT B; Pin 8 is V+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Output, Channel A | Low-impedance buffered output capable of driving ≥10 kΩ loads to within 0.2 V of rails; no phase reversal under overvoltage. |
| –IN A (Pin 2) | Inverting Input, Channel A | Differential input node with 300 GΩ || 4.4 pF common-mode impedance; protected up to ±40 V beyond supplies. |
| +IN A (Pin 3) | Noninverting Input, Channel A | Differential input node with identical overvoltage protection and impedance as –IN A; used for unity-gain follower or summing junctions. |
| V– (Pin 4) | Negative Supply | Lowest potential power rail connection; must be decoupled locally with ≥100 nF ceramic capacitor to ground. |
| +IN B (Pin 5) | Noninverting Input, Channel B | Independent second channel input; electrically isolated from Channel A - supports differential pair or dual-sensor readout. |
| –IN B (Pin 6) | Inverting Input, Channel B | Second channel inverting input; shares same protection architecture and noise specs as Channel A inputs. |
| OUT B (Pin 7) | Output, Channel B | Fully independent output with rail-to-rail swing and overload recovery time of 0.2 µs (gain = –10). |
| V+ (Pin 8) | Positive Supply | Highest potential power rail; supports wide 4.5–36 V operation; requires local 100 nF ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ offset calibration | ±4 µV typical offset and ±0.08 µV/°C typical drift - reduces system calibration frequency and improves long-term accuracy in unattended equipment. |
| Integrated ±40 V input OVP | Clamps input current to ≤10 mA during overvoltage events - removes external protection diodes and series resistors, shrinking PCB area by >30% in analog input modules. |
| Super beta bipolar inputs | 500 pA max input bias current and 110 fA/√Hz current noise - preserves signal integrity in high-Z sensor interfaces like strain gauges and thermopiles. |
| Rail-to-rail output | Swings to within 0.2 V of either rail at 10 kΩ load - maximizes dynamic range in single-supply systems (e.g., 3.3 V microcontroller ADC front-ends). |
| EMI/RFI filtered inputs | 120 dB EMIRR at 900 MHz - rejects cellular and ISM-band interference in factory-floor instrumentation without added shielding or ferrites. |
Applications
| Analog Input Module | Mixed I/O Module (AI/AO/DI/DO) |
|---|---|
Use Scenario: High-density PLC analog input card acquiring 16 channels of ±10 V industrial sensor signals with shared backplane power and space-constrained layout. IC Role / Device Role / Timing Role: Precision signal conditioning amplifier with input overvoltage protection, buffering and level-shifting sensor outputs before 24-bit ΣΔ ADC sampling. Use Value: Eliminates discrete OVP circuitry per channel, reducing component count by 4 parts/channel and enabling 16-channel design in 100 mm × 100 mm board area. |
Use Scenario: Modular industrial I/O terminal block supporting simultaneous analog input, analog output, digital input, and digital output on one PCB with shared MCU interface. IC Role / Device Role / Timing Role: Dual-channel op amp providing isolated, protected signal conditioning for AI channels while sharing supply and layout resources with AO drivers and DI comparators. Use Value: Enables co-location of AI and AO sections without crosstalk; rail-to-rail output supports 0–10 V AO compliance while OVP protects against field-wiring faults. |
| Source Measurement Unit (SMU) | Data Acquisition System (DAQ) |
Use Scenario: Benchtop SMU requiring sub-µV offset stability and ±40 V input tolerance during force-and-measure cycles on semiconductor devices under test. IC Role / Device Role / Timing Role: Precision feedback amplifier in voltage/current sourcing loop with real-time overvoltage detection and fast overload recovery (0.2 µs). Use Value: Maintains <1 ppm linearity over temperature and prevents damage during DUT breakdown events - extending calibration interval to 12 months. |
Use Scenario: Portable battery-powered DAQ capturing thermocouple, RTD, and bridge sensor data in remote environmental monitoring stations. IC Role / Device Role / Timing Role: Low-power, low-noise front-end amplifier for multiplexed sensor inputs, operating from 3.6 V Li-ion supply with rail-to-rail output into SAR ADC driver stage. Use Value: 240 µA per channel quiescent current enables >100 hours of continuous logging on 2000 mAh battery; 0.2 µVPP 0.1–10 Hz noise ensures <0.001°C resolution in RTD measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2205ADGKR | No input overvoltage protection; 7.2 nV/√Hz broadband noise (vs. 8 nV/√Hz); same e-trim™ core and pinout. | Suitable only in fully protected signal paths; not rated for direct field-wire connection without external clamping. | Select when lowest possible noise dominates over fault tolerance, and system-level protection is already implemented. |
| ADA4522-2ARZ | Zero-drift auto-zero architecture; 0.3 µV max offset; 5.8 nV/√Hz noise; no integrated OVP; SOIC-8 package. | Higher DC precision but lacks ±40 V input fault margin; requires external protection for industrial I/O. | Choose for ultra-low drift (<0.005 µV/°C) in lab-grade instruments where input transients are controlled. |
Compared with OPA2206ADGKR, OPA2205ADGKR trades input protection for lower noise, while ADA4522-2ARZ offers superior drift performance but demands external OVP - making OPA2206ADGKR uniquely balanced for ruggedized, high-accuracy industrial signal chains needing both precision and robustness.
Availability
OPA2206ADGKR is available at Aetrix Electronics and suitable for analog input modules, source measurement units, and portable data acquisition systems requiring stable component supply, long-lifecycle support, and guaranteed traceability for industrial OEM deployments.
Supply support for OPA2206ADGKR 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 precision amplifiers, data converters, and industrial interface solutions.
The OPAx206 family was engineered to extend the legacy OPAx277 performance envelope with integrated input overvoltage protection - targeting high-reliability industrial automation, test equipment, and energy infrastructure applications demanding both metrology-grade accuracy and field-hardened robustness.
FAQ
What is the maximum input voltage range supported by the OPA2206ADGKR?
The OPA2206ADGKR supports input voltages from (V–) – 40 V to (V+) + 40 V, regardless of supply voltage. For example, with ±15 V supplies, inputs may safely reach –55 V to +55 V. This protection is active across the full –40°C to +125°C temperature range and eliminates need for external clamping diodes in industrial I/O designs. The OPA2206ADGKR maintains functional integrity during such overvoltage events.
Does the OPA2206ADGKR require external components for input overvoltage protection?
No - the OPA2206ADGKR integrates bidirectional input overvoltage protection circuitry that clamps input current to ≤10 mA when signals exceed (V–) – 40 V or (V+) + 40 V. This eliminates external series resistors, Schottky diodes, or TVS devices typically needed in analog front-ends. The OPA2206ADGKR achieves full protection with only standard 100 nF supply decoupling capacitors, simplifying layout and improving reliability.
What is the typical input offset voltage drift of the OPA2206ADGKR over temperature?
The OPA2206ADGKR has a maximum input offset voltage drift of ±0.5 µV/°C across –40°C to +125°C, with a typical value of ±0.08 µV/°C. This ultra-low drift is achieved via TI's e-trim™ process and enables stable DC-coupled measurements in uncalibrated field instruments. The OPA2206ADGKR's drift performance directly supports 16-bit+ accuracy without periodic recalibration in applications like digital multimeters and sensor transmitters.
Can the OPA2206ADGKR drive capacitive loads without instability?
Yes - the OPA2206ADGKR is internally compensated for unity-gain stability and drives ≥30 pF capacitive loads with ≥67° phase margin (RL = 10 kΩ). Typical overshoot remains <10% at 100 pF, and phase margin stays >40° up to 1000 pF. Layout best practices (short traces, local decoupling) ensure robust operation in ADC driver or filter applications. The OPA2206ADGKR's stability is verified per Figure 5-35 in the official datasheet.
Is the OPA2206ADGKR pin-compatible with other dual op amps in SOIC-8 packages?
The OPA2206ADGKR uses a non-standard pinout: Pin 1 = OUT A, Pin 2 = –IN A, Pin 3 = +IN A, Pin 4 = V–, Pin 5 = +IN B, Pin 6 = –IN B, Pin 7 = OUT B, Pin 8 = V+. It is not pin-compatible with industry-standard dual op amps (e.g., LM358, TL072, OPA2188). PCB layout must follow the exact OPA2206ADGKR pin mapping - confirmed in Section 4.2 of the SBOSA11E datasheet. Interchange requires schematic and layout revision.
OPA2206ADGKR 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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 3.6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 8 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-VSSOP
OPA2206ADGKR FAQ
1.How can I place an order for OPA2206ADGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2206ADGKR 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 OPA2206ADGKR reliable?
The price and inventory of OPA2206ADGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2206ADGKR is usually 5 days.
3.What payment methods are accepted for OPA2206ADGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2206ADGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2206ADGKR?
OPA2206ADGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2206ADGKR 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 OPA2206ADGKR?
For technical support, including OPA2206ADGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2206ADGKR requirements.
6.How does Aetrix verify that OPA2206ADGKR is sourced from the original manufacturer or authorized distributors?
All OPA2206ADGKR 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 OPA2206ADGKR meets industry standards.
7.What is the process for return or replacement of OPA2206ADGKR?
All OPA2206ADGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2206ADGKR, 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 OPA2206ADGKR part is unused and in its original packaging.
Return procedure for OPA2206ADGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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