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Texas Instruments OPA2209AID
- Part No.:
- OPA2209AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2209AID.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:713
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Product details
Overview
OPA2209AID from Texas Instruments is a dual-channel, precision, low-noise operational amplifier in an 8-pin SOIC package. It delivers 2.2 nV/√Hz voltage noise at 1 kHz, 130 nVPP 0.1-Hz to 10-Hz noise, and 18 MHz gain bandwidth, operating from ±2.25 V to ±18 V supplies. It serves as a high-fidelity signal conditioner in instrumentation-grade analog front-ends requiring rail-to-rail output swing and fast 16-bit settling (2.6 µs).
For engineers reviewing the OPA2209AID datasheet, OPA2209AID pinout, OPA2209AID application, or OPA2209AID equivalent, key selection criteria include verified low-frequency noise performance, guaranteed quiescent current ≤2.5 mA per channel, offset voltage ≤150 µV, and compatibility with ±18 V or single 36 V supply rails in precision data acquisition systems.
Technical Context
The OPA2209AID uses a SiGe bipolar process enabling unity-gain stability without phase reversal, supporting demanding closed-loop configurations like PLL loop filters and ADC drivers. Its input stage features back-to-back diodes for differential input protection, and its rail-to-rail output stage maintains >130 dB open-loop gain across –40°C to 125°C.
It achieves 6.4 V/µs slew rate and 2.1 µs 0.1% settling for 10-V steps while sustaining 120 dB CMRR over frequency and 132 dB typical open-loop gain at 25°C - characteristics critical for low-distortion signal processing in hydrophone and ultrasound amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 2.2 nV/√Hz at 1 kHz - enables sub-1 µV RMS noise in low-source-impedance (<2 kΩ) sensor interfaces |
| 0.1–10 Hz Noise | 130 nVPP - ensures stable DC-coupled operation in precision instrumentation amplifiers |
| Gain Bandwidth | 18 MHz - supports high-speed, high-resolution ADC driving with ≥16-bit accuracy |
| Slew Rate | 6.4 V/µs - allows clean 10-V step response within 2.6 µs for 16-bit settling |
| Supply Range | ±2.25 V to ±18 V (or 4.5 V to 36 V single) - accommodates industrial and test equipment rails |
| Offset Voltage | ≤150 µV max - minimizes DC error in low-gain, high-precision transducer signal chains |
| Quiescent Current | ≤2.5 mA per channel - balances low-noise performance with power-constrained portable designs |
Pinout & Package
OPA2209AID is housed in an 8-pin SOIC (D package) with 4.90 mm × 3.91 mm body size and standard JEDEC MS-012AC footprint. Thermal resistance RθJA is 134.3°C/W, supporting operation up to 125°C ambient.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail capable, drives 10 kΩ load to within 0.2 V of rails |
| 2 | –IN A | Inverting input, channel A - matched to +IN A for <1 µV/V channel separation |
| 3 | +IN A | Noninverting input, channel A - protected by back-to-back diodes; limits input current to ≤10 mA |
| 4 | V– | Negative supply terminal - common return for both amplifiers; must be decoupled with 0.1 µF |
| 5 | +IN B | Noninverting input, channel B - electrically isolated from channel A; shares no internal nodes |
| 6 | –IN B | Inverting input, channel B - identical AC/DC specs to channel A; supports independent dual gain paths |
| 7 | OUT B | Amplifier B output - independently buffered; no crosstalk-induced distortion above –120 dB |
| 8 | V+ | Positive supply terminal - accepts up to 36 V total supply; requires local 0.1 µF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives to within 0.2 V of either rail under 10 kΩ load - maximizes dynamic range in single-supply 3.3 V or 5 V systems |
| No phase reversal | Guaranteed immunity to output polarity inversion during common-mode overdrive - eliminates latch-up risk in sensor bias circuits |
| Low 1/f noise corner | 0.1–10 Hz noise of 130 nVPP confirms <10 Hz 1/f corner - critical for DC-stable infrared detector amplification |
| High PSRR | ≥120 dB PSRR at DC and >80 dB at 100 kHz - rejects switching regulator ripple in mixed-signal PCB layouts |
| Unity-gain stable | Operates with 0 dB phase margin at G = 1 - eliminates need for external compensation in buffer and gain-of-one configurations |
Applications
| PLL Loop Filter | Ultrasound Amplifier |
|---|---|
|
Use Scenario: Integrator stage in frequency synthesizer feedback path, filtering VCO control voltage with minimal phase jitter. IC Role / Device Role / Timing Role: Dual op-amp implements active integrator (Ch A) and buffer (Ch B), rejecting supply noise on tuning line. Use Value: 2.2 nV/√Hz noise directly limits integrated phase noise floor; 130 nVPP 0.1–10 Hz noise prevents drift-induced frequency wander. |
Use Scenario: First-stage preamplifier for piezoelectric transducer arrays in medical imaging systems. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth gain block conditioning weak, wideband echo signals before digitization. Use Value: 18 MHz GBW supports >10 MHz receive bandwidth; 6.4 V/µs slew rate preserves pulse fidelity in time-of-flight measurements. |
| Professional Audio Preamplifier | High-Performance DAC Output Amplifier |
|
Use Scenario: Mic-level signal conditioning in studio-grade audio interfaces, requiring ultra-low THD+N and DC stability. IC Role / Device Role / Timing Role: Dual-channel noninverting amplifier with matched gain paths for stereo L/R channels. Use Value: 0.000025% THD+N at 1 kHz ensures transparent signal reproduction; ≤150 µV offset prevents audible DC pop on power-up. |
Use Scenario: Post-DAC reconstruction filter and output driver in 24-bit audio or precision measurement DAC modules. IC Role / Device Role / Timing Role: Precision buffer isolating DAC core from load variations while maintaining monotonicity. Use Value: 2.6 µs 16-bit settling guarantees accurate waveform reconstruction; rail-to-rail swing fully utilizes DAC's 0–5 V output 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 |
|---|---|---|---|
| OPA211AID | Lower 1.1 nV/√Hz noise at 1 kHz but higher 3.5 mA/ch quiescent current; no rail-to-rail output | Better for ultra-low-noise, high-source-impedance sensor amps where output swing margin is sufficient | Select OPA211AID only when voltage noise is prioritized over power and output headroom |
| OPA2189AIDR | Zero-drift architecture; 0.005 µV/°C offset drift vs. OPA2209AID's 3 µV/°C; 4.2 nV/√Hz noise | Ideal for long-term DC stability in weigh scales or thermocouple amplifiers, not low-noise AC signal chains | Choose OPA2189AIDR for µV-level drift-critical applications, not broadband low-noise requirements |
Compared with OPA211AID and OPA2189AIDR, the OPA2209AID uniquely balances ultra-low broadband noise, rail-to-rail output, and low quiescent current - making it optimal for dual-channel, battery-aware, high-fidelity analog signal paths where both AC fidelity and DC accuracy matter.
Availability
OPA2209AID is available at Aetrix Electronics and suitable for precision instrumentation, medical ultrasound front-ends, and professional audio signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for OPA2209AID 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 delivering analog and embedded processing solutions, with over 50 years of precision amplifier innovation and manufacturing excellence.
The OPA2209AID belongs to TI's OPAx209 series - engineered specifically for high-resolution data acquisition systems demanding simultaneous low noise, low power, and rail-to-rail output in dual-channel form factors.
FAQ
What is the maximum supply voltage for OPA2209AID?
The OPA2209AID supports a total supply voltage up to 40 V (e.g., ±20 V or 40 V single-ended), but its recommended operating range is ±2.25 V to ±18 V (or 4.5 V to 36 V). Exceeding 40 V risks permanent damage per Absolute Maximum Ratings. The OPA2209AID maintains full specification compliance across its entire ±2.25 V to ±18 V range, including 130 dB CMRR and 2.2 nV/√Hz noise performance.
Does OPA2209AID have rail-to-rail input capability?
No, the OPA2209AID does not feature rail-to-rail input. Its input common-mode voltage range is specified as (V–) + 1.5 V to (V+) – 1.5 V - a 3 V exclusion zone near each rail. However, it does provide true rail-to-rail output swing, delivering within 0.2 V of either supply under 10 kΩ load. This asymmetry makes the OPA2209AID ideal for output buffering and gain stages where input biasing is controlled externally.
Can OPA2209AID drive capacitive loads without oscillation?
Yes, the OPA2209AID is unity-gain stable and can safely drive ≥100 pF capacitive loads without external compensation, as verified in Figure 30 of the datasheet. For loads exceeding 100 pF, TI recommends adding a small series resistor (e.g., 10–50 Ω) between the output and capacitance to maintain phase margin. The OPA2209AID's robust stability eliminates risk of peaking or ringing in ADC driver and active filter applications.
What is the thermal resistance (RθJA) of OPA2209AID in SOIC package?
The junction-to-ambient thermal resistance (RθJA) for OPA2209AID in the 8-pin SOIC (D) package is 134.3°C/W, per Section 6.5 of the SBOS426D datasheet. This value assumes standard JEDEC 2-layer board conditions. For high-power-density layouts, designers should use RθJB (60.7°C/W) and ensure adequate copper pour under the exposed pad area to sustain operation at 125°C ambient.
Is OPA2209AID suitable for single-supply operation?
Yes, the OPA2209AID is fully specified for single-supply operation from 4.5 V to 36 V. Its rail-to-rail output and input voltage range referenced to V– enable direct interfacing with microcontroller ADCs and DACs in 3.3 V or 5 V systems. When used in single-supply mode, the OPA2209AID maintains all key specs - including 2.2 nV/√Hz noise, 18 MHz GBW, and ≤150 µV offset - provided proper input biasing and output load conditions are met.
OPA2209AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (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:
- 6.4V/µs
- Gain Bandwidth Product:
- 18 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 nA
- Voltage - Input Offset:
- 35 µV
- Current - Supply:
- 2.2mA (x2 Channels)
- Current - Output / Channel:
- 65 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-SOIC
OPA2209AID FAQ
1.How can I place an order for OPA2209AID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2209AID 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 OPA2209AID reliable?
The price and inventory of OPA2209AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2209AID is usually 5 days.
3.What payment methods are accepted for OPA2209AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2209AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2209AID?
OPA2209AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2209AID 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 OPA2209AID?
For technical support, including OPA2209AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2209AID requirements.
6.How does Aetrix verify that OPA2209AID is sourced from the original manufacturer or authorized distributors?
All OPA2209AID 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 OPA2209AID meets industry standards.
7.What is the process for return or replacement of OPA2209AID?
All OPA2209AID units undergo pre-shipment inspection (PSI). If there is an issue with OPA2209AID, 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 OPA2209AID part is unused and in its original packaging.
Return procedure for OPA2209AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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