OPA206 - Low-Power Precision Op Amp with OVP | Texas Instruments
MPN: OPA206 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.33 | $665.00 |
| 1,000 | $1.2 | $1,200.00 |
Drop-in alternatives for OPA206 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
OPA205
✅ Drop-In📋 Reference alternative (not in catalog)
OPA277
✅ Drop-In📋 Reference alternative (not in catalog)
OPA2206
⚡ Same Package📋 Reference alternative (not in catalog)
AD8628ARZ
✅ Drop-In✓ In Stock
$1.49 / Unit
View Datasheet →OPA2188
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MCP6V11
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OPA206 Maximum Ratings & Electrical Characteristics
| Number of Channels | 1 |
| Supply Voltage Range (Single) | 4.5 V to 36 V |
| Supply Voltage Range (Dual) | ±2.25 V to ±18 V |
| Quiescent Current per Channel | 240 µA |
| Input Offset Voltage (Max) | 50 µV (25 µV for A-grade) |
| Input Offset Voltage Drift | ±0.5 µV/°C |
| Input Bias Current (Max) | 0.5 nA |
| Input Voltage Noise Density | 8 nV/√Hz |
| Gain Bandwidth Product | 2.4 MHz |
| Slew Rate | 1.5 V/µs |
| Input Overvoltage Protection | ±40 V beyond supplies |
| Output Type | Push-Pull, Rail-to-Rail |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC |
| RoHS Status | Compliant |
OPA206 Pin Configuration
| Pin 1 | OUT — Amplifier output |
| Pin 2 | IN- — Inverting input |
| Pin 3 | IN+ — Non-inverting input |
| Pin 4 | V- — Negative supply |
| Pin 5 | NC — No connection |
| Pin 6 | V+ — Positive supply |
| Pin 7 | NC — No connection |
| Pin 8 | NC — No connection |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
OPA206 is suitable for 6 applications: Precision Data Acquisition, Industrial Process Control, Medical Instrumentation, Test and Measurement Equipment, Battery-Powered Devices, Audio Signal Processing.
Precision Data Acquisition
The OPA206's low offset voltage (50 µV max) and low noise (8 nV/√Hz) make it ideal for buffering and amplifying sensor signals in data acquisition systems. Its low quiescent current (240 µA) is beneficial for multi-channel systems where power dissipation is a concern. The integrated OVP protects the ADC input from transients, ensuring reliable operation in industrial environments.
Recommended
Industrial Process Control
In industrial process control, the OPA206 provides accurate signal conditioning for temperature, pressure, and flow sensors. Its wide supply range (4.5 V to 36 V) allows direct operation from 24 V industrial buses. The input overvoltage protection up to ±40 V beyond supplies ensures robustness against wiring faults and transients, reducing field failures and maintenance costs.
Recommended
Medical Instrumentation
The OPA206 is well-suited for medical devices such as patient monitors and diagnostic equipment, where precision and low power are critical. Its low bias current (0.5 nA) minimizes errors when interfacing with high-impedance sensors like ECG electrodes. The low noise (8 nV/√Hz) ensures clean signal amplification for accurate diagnosis. The small 8-SOIC package saves board space in portable devices.
Recommended
Test and Measurement Equipment
For test and measurement equipment, the OPA206 offers the precision and stability required for accurate measurements. Its low offset drift (±0.5 µV/°C) ensures consistent performance over temperature, while the rail-to-rail output maximizes dynamic range. The integrated OVP protects the amplifier from accidental overvoltage during probing, enhancing reliability in benchtop and field instruments.
Recommended
Battery-Powered Devices
The OPA206's low quiescent current of 240 µA extends battery life in portable devices such as handheld meters and wireless sensors. Its wide supply range allows operation from a single lithium-ion cell (3.7 V) down to 4.5 V, making it suitable for 5 V systems. The low noise and precision ensure accurate signal processing without draining the battery quickly.
Recommended
Audio Signal Processing
Although not primarily an audio amplifier, the OPA206's low noise (8 nV/√Hz) and low distortion make it suitable for high-fidelity audio applications such as headphone amplifiers and active filters. Its rail-to-rail output allows maximum signal swing, and the low quiescent current is beneficial for portable audio devices. The integrated OVP protects against accidental supply reversal.
Recommended
Recommended Products Summary
Engineering reference data for OPA206 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA205 | OPA277 | AD8628 |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Input Offset Voltage (Max) | 50 µV | 50 µV | 50 µV | 5 µV |
| Input Bias Current (Max) | 0.5 nA | 0.5 nA | 1 nA | 30 pA |
| Input Voltage Noise Density | 8 nV/√Hz | 8 nV/√Hz | 8 nV/√Hz | 22 nV/√Hz |
| Gain Bandwidth Product | 2.4 MHz | 2.4 MHz | 1 MHz | 2.5 MHz |
| Quiescent Current per Channel | 240 µA | 240 µA | 800 µA | 1 mA |
| Input Overvoltage Protection | ±40 V beyond supplies | None | None | None |
Key Differentiators
- Integrated input overvoltage protection up to ±40 V beyond supplies (vs OPA205)
- Lower quiescent current (240 µA) compared to OPA277 (800 µA) (vs OPA277)
- Super-beta inputs with 0.5 nA max bias current (vs AD8628)
Design Notes
The OPA206 operates from 4.5 V to 36 V single supply or ±2.25 V to ±18 V dual supply. Ensure the supply voltage does not exceed the absolute maximum ratings. Use 0.1 µF ceramic capacitors close to the V+ and V- pins for decoupling, and a 10 µF bulk capacitor for low-frequency stability.
For optimal noise performance, keep the feedback network resistors low in value (e.g., 1 kΩ to 10 kΩ) to minimize thermal noise. Place the input and output traces away from high-frequency digital lines to avoid coupling. Use a ground plane to reduce EMI and provide a low-impedance return path.
The OPA206 has integrated input overvoltage protection, but do not rely on it for continuous operation beyond the absolute maximum ratings. Ensure the input common-mode voltage stays within the specified range to avoid output phase reversal. For single-supply operation, bias the inputs to mid-supply to maximize dynamic range.
Compliance Information
RoHS compliant per TI product page. AEC-Q100 qualification not specified for this part.
