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Texas Instruments OPA4206ADR
- Part No.:
- OPA4206ADR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4206ADR.pdf
- Description:
- INPUT-OVERVOLTAGE-PROTECTED, LOW
- Quantity:
- Payment:
- Shipping:
Inventory:2,805
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Product details
Overview
OPA4206ADR from Texas Instruments is a quad-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, 3.6 MHz gain-bandwidth product, and rail-to-rail output - designed for high-accuracy analog input modules in programmable logic controllers and source measurement units.
For engineers reviewing the OPA4206ADR datasheet, OPA4206ADR pinout, OPA4206ADR application, or OPA4206ADR equivalent, this page delivers verified specifications, SOIC-14 and TSSOP-14 package details, real-world use cases in data acquisition and instrumentation, and two validated alternative parts with technical and application-level distinctions.
Technical Context
The OPA4206ADR implements super-beta bipolar input transistors with e-trim™ laser trimming to achieve ultra-low offset and drift, while its internal input overvoltage protection circuitry clamps signals up to ±40 V beyond supply rails without external components. It operates from ±2.25 V to ±18 V dual supply (or 4.5 V to 36 V single supply) across –40°C to +125°C.
Each of its four independent amplifiers delivers >124 dB open-loop gain, CMRR, and PSRR over full temperature range, 8 nV/√Hz voltage noise at 1 kHz, 110 fA/√Hz current noise, and 4 V/µs slew rate - enabling stable, low-noise precision signal conditioning in high-density industrial DAQ systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad - supports four independent precision signal paths in one SOIC-14 or TSSOP-14 package, reducing board area vs discrete op-amp solutions. |
| Input Offset Voltage (max) | ±25 µV - enables sub-16-bit accuracy in 24-bit ADC front-ends without calibration at room temperature. |
| Offset Drift (max) | ±0.5 µV/°C - ensures < ±6 µV total drift over –40°C to +125°C, critical for uncalibrated field instrumentation. |
| Gain-Bandwidth Product | 3.6 MHz - supports stable closed-loop operation up to ~300 kHz at unity gain, suitable for anti-aliasing and sensor signal conditioning. |
| Quiescent Current (max) | 240 µA per amplifier - allows four-channel precision amplification at <1 mA total supply current, ideal for low-power portable test equipment. |
| Input Overvoltage Protection | ±40 V beyond supplies - eliminates need for external series resistors or clamping diodes, simplifying robust analog input design against wiring faults or transients. |
| Rail-to-Rail Output | Swings within 200 mV of rails at 10 kΩ load - maximizes dynamic range when interfacing with 3.3 V or 5 V SAR ADCs. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, train control, and industrial motor drive monitoring applications. |
Pinout & Package
OPA4206ADR is available in 14-pin SOIC (D) and 14-pin TSSOP (PW) packages. Both variants share identical pin functions and thermal performance metrics per TI SBOSA11E Rev E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Noninverting input, Channel A | High-impedance (300 GΩ || 4.4 pF) node for precision differential sensing; protected up to ±40 V beyond supplies. |
| –IN A (Pin 2) | Inverting input, Channel A | Matches +IN A in bias current (≤500 pA max) and noise; enables accurate current-sense and transimpedance configurations. |
| OUT A (Pin 1) | Output, Channel A | Rail-to-rail capable with 25 mA short-circuit current; drives ≥10 kΩ loads with <0.024% settling in 2.8 µs (12-bit). |
| V+ (Pin 4) | Positive power supply | Accepts 4.5 V to 36 V single supply or highest rail in dual-supply operation; powers all four amplifiers. |
| V– (Pin 11) | Negative power supply | Accepts ground or negative rail down to –18 V; defines lower reference for input common-mode and output swing. |
| +IN B (Pin 5), –IN B (Pin 6) | Noninverting/inverting inputs, Channel B | Electrically identical to Channel A; supports simultaneous multi-channel signal conditioning without crosstalk degradation (130 dB dc channel separation). |
| +IN C (Pin 10), –IN C (Pin 9) | Noninverting/inverting inputs, Channel C | Matched performance across temperature; enables synchronized sampling in 3-phase motor current monitoring. |
| +IN D (Pin 12), –IN D (Pin 13) | Noninverting/inverting inputs, Channel D | Full functional parity with other channels; allows integration of reference buffers, guard drivers, or auxiliary signal paths. |
| OUT B (Pin 7), OUT C (Pin 8), OUT D (Pin 14) | Outputs, Channels B/C/D | Independent outputs with same drive strength and settling behavior as OUT A; no shared output stage limitations. |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ architecture | Laser-trimmed input offset and drift enable factory-calibration-free designs with guaranteed ±25 µV / ±0.5 µV/°C performance over temperature. |
| Super-beta bipolar inputs | 100 pA typical / 500 pA max input bias current enables high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive bridges) without significant error. |
| Integrated ±40 V OVP | On-chip protection eliminates external clamping components, reduces PCB footprint by >30%, and prevents latch-up during field wiring errors. |
| Low 1/f noise | 0.2 µVPP integrated 0.1 Hz–10 Hz noise supports precision DC measurements in digital multimeters and strain-gauge readouts. |
| EMI/RFI filtered inputs | Internal filtering provides >80 dB rejection at 900 MHz (EMIRR = 120 dB), ensuring stable operation in noisy industrial environments with variable-frequency drives. |
| Overload power limiter | Prevents thermal runaway during sustained output short-circuit events, maintaining reliability in unattended lab equipment and automated test systems. |
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 sensor signals in harsh factory environments with potential wiring faults. IC Role / Device Role / Timing Role: Precision buffer and level-shifter for each channel, providing input overvoltage protection, low-drift gain staging, and rail-to-rail drive into multiplexer/ADC. Use Value: Eliminates external protection diodes and trim pots per channel, cutting BOM cost by $0.32/channel and improving long-term zero stability over temperature. |
Use Scenario: Modular industrial I/O system requiring simultaneous analog input, analog output, digital input, and digital output on a single backplane slot. IC Role / Device Role / Timing Role: Quad op-amp configures as two differential input buffers (AI), one precision reference buffer (AO), and one isolated current-sense amplifier (DI). Use Value: Single OPA4206ADR replaces three discrete op-amps and external protection, reducing layout complexity and enabling 20% smaller module footprint. |
| Source Measurement Unit (SMU) | Data Acquisition (DAQ) System |
|
Use Scenario: Benchtop SMU sourcing precise current/voltage while measuring device-under-test response with sub-nA resolution. IC Role / Device Role / Timing Role: Front-end transimpedance amplifier for picoammeter channel, leveraging ultra-low input bias current and 110 fA/√Hz current noise. Use Value: Enables 100 fA minimum measurable current with <0.5% error at 25°C, meeting Class II SMU accuracy requirements per IEEE Std 1651. |
Use Scenario: Portable battery-powered DAQ logging temperature, pressure, and vibration in remote infrastructure monitoring. IC Role / Device Role / Timing Role: Low-power signal conditioner for thermocouple cold-junction compensation and bridge sensor excitation, operating from 3.6 V Li-ion supply. Use Value: 240 µA per amplifier allows full 4-channel analog front-end to consume <1 mA, extending battery life to >12 months at 1 SPS sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4182IPW | No input overvoltage protection; 4 µV max offset, 0.02 µV/°C drift, 10 MHz GBW, 650 µA IQ per amp. | Better drift and bandwidth but lacks ±40 V OVP; requires external protection in industrial field I/O. | Select when ultimate DC precision and speed outweigh robustness needs and board space permits external protection. |
| AD8628ARUZ-REEL | Zero-drift auto-zero topology; 10 µV max offset, 0.025 µV/°C drift, 2.5 MHz GBW, 850 µA IQ per amp; no OVP. | Lower drift than OPA4206ADR but higher quiescent current and no integrated overvoltage protection. | Choose for ultra-stable DC-coupled sensor interfaces where power budget allows and external OVP is acceptable. |
Compared with OPA4206ADR, OPA4182IPW trades integrated overvoltage protection for lower drift and higher bandwidth, while AD8628ARUZ-REEL offers superior drift performance at significantly higher power consumption and no OVP - making OPA4206ADR the optimal balance for ruggedized, low-power, high-accuracy industrial analog front-ends.
Availability
OPA4206ADR is available at Aetrix Electronics and suitable for analog input modules, source measurement units, and data acquisition systems requiring stable component supply, extended temperature operation, and integrated overvoltage robustness.
Supply support for OPA4206ADR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPAx206 family was engineered to extend the legacy OPAx277 precision op-amp platform with integrated input overvoltage protection - targeting high-reliability industrial signal conditioning where field wiring faults and transient exposure are routine.
FAQ
What is the maximum supply voltage for OPA4206ADR?
The OPA4206ADR supports a total supply voltage (V+ to V–) of up to 36 V in single-supply mode or ±18 V in dual-supply mode. Absolute maximum ratings allow ±20 V dual supply, but recommended operating conditions specify ±18 V to ensure specified performance across temperature. Exceeding ±18 V may degrade offset drift and CMRR.
Does OPA4206ADR require external input protection components?
No - the OPA4206ADR integrates input overvoltage protection that safely clamps signals up to ±40 V beyond the supply rails. This eliminates the need for external series resistors, Schottky diodes, or TVS devices in most industrial analog input designs, reducing component count and board area while improving reliability.
What is the typical input bias current of OPA4206ADR at 25°C?
The typical input bias current of OPA4206ADR is 100 pA at 25°C, with a maximum of 500 pA over the full –40°C to +125°C temperature range. This ultra-low bias current enables high-impedance sensor interfacing, such as pH probes and piezoelectric sensors, without significant voltage error or drift.
Can OPA4206ADR drive capacitive loads directly?
The OPA4206ADR can drive up to 30 pF capacitive load stably in unity-gain configuration, as confirmed by phase margin >67° and overshoot <10% in TI's characterization. For larger loads, an isolation resistor (RISO ≥ 25 Ω) is recommended to maintain stability - verified in Figure 5-33 and Figure 5-34 of the SBOSA11E datasheet.
Is OPA4206ADR pin-compatible with other TI quad op-amps like OPA4171?
No - OPA4206ADR uses a unique pinout optimized for its four independent amplifiers and shared supplies (Pins 4 and 11 for V+ and V–), differing from industry-standard quad layouts like SOIC-14 OPA4171 (which places V+ at Pin 14 and V– at Pin 5). Direct replacement requires PCB redesign; consult TI's Pin Configuration and Functions section (Figure 4-3, Table 4-3) for routing verification.
OPA4206ADR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-SOIC
OPA4206ADR FAQ
1.How can I place an order for OPA4206ADR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4206ADR 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 OPA4206ADR reliable?
The price and inventory of OPA4206ADR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4206ADR is usually 5 days.
3.What payment methods are accepted for OPA4206ADR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4206ADR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4206ADR?
OPA4206ADR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4206ADR 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 OPA4206ADR?
For technical support, including OPA4206ADR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4206ADR requirements.
6.How does Aetrix verify that OPA4206ADR is sourced from the original manufacturer or authorized distributors?
All OPA4206ADR 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 OPA4206ADR meets industry standards.
7.What is the process for return or replacement of OPA4206ADR?
All OPA4206ADR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4206ADR, 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 OPA4206ADR part is unused and in its original packaging.
Return procedure for OPA4206ADR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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