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Texas Instruments OPA300AIDBVR
- Part No.:
- OPA300AIDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA300AIDBVR.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,355
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Product details
Overview
OPA300AIDBVR from Texas Instruments is a single-channel, low-noise, fast-settling CMOS operational amplifier in a 6-pin SOT-23 package. It delivers 150MHz unity-gain bandwidth, 3nV/√Hz input voltage noise, and 16-bit settling in 150ns at 5V supply. Designed for high-resolution data acquisition, it drives 16-bit ADCs such as the ADS8401 with <0.003% THD+N and rail-to-rail output swing (±100mV from rails).
For engineers reviewing the OPA300AIDBVR datasheet, OPA300AIDBVR pinout, OPA300AIDBVR application, or OPA300AIDBVR equivalent, key selection criteria include its shutdown-enabled power efficiency (9.5mA active / 5µA shutdown), single-supply operation (2.7V–5.5V), and validated performance in IF/RF amplification, active filtering, and low-noise preamplifier stages.
Technical Context
The OPA300AIDBVR implements a classic two-stage CMOS topology with folded-cascode gain stage and Class AB output driver, enabling both high slew rate (80V/µs) and unity-gain stability. Its enable pin is referenced to V−, requiring ≥2.5V above V− to activate and ≤0.8V above V− to disable - critical for battery-powered systems where precise logic-level control of quiescent current is required.
Input bias current is ultra-low (±0.1pA typ), supporting high-impedance sensor interfaces, while the 10¹³Ω || 3pF input impedance preserves signal integrity in precision applications. The device operates across −40°C to +125°C and maintains >95dB open-loop gain over temperature and load conditions (2kΩ/100Ω), ensuring consistent linearity in industrial and instrumentation environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 150MHz - enables stable closed-loop operation up to 10MHz with 20dB gain margin for anti-aliasing filter design. |
| Input voltage noise density | 3nV/√Hz at >1MHz - ensures minimal contribution to system noise floor in wideband signal conditioning paths. |
| Settling time (16-bit) | 150ns - meets timing budget for 1.25MSPS 16-bit ADCs like ADS8401 without cycle loss. |
| Supply current (active) | 9.5mA typical at 5V - balances speed and power for portable instrumentation and battery-backed DAQ modules. |
| Shutdown current | 5µA - reduces average power by >1800× during idle periods, extending battery life in duty-cycled systems. |
| Output voltage swing | (V+) − 100mV to (V−) + 100mV (RL = 2kΩ) - supports full-scale signal utilization in single-supply 5V systems. |
| Total harmonic distortion + noise | 0.003% at 1kHz - preserves SFDR >100dB in high-fidelity analog front-ends for test equipment. |
Pinout & Package
SOT-23-6 package (DBV), 2.9mm × 1.6mm footprint, thermally enhanced for high-speed operation in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Enable | Digital control input | CMOS-compatible enable pin referenced to V−; logic high (>V− + 2.5V) activates amplifier; output enters high-Z state when disabled. |
| 2 - −In | Inverting input | Differential input node with ±0.1pA bias current; requires matched trace routing to minimize common-mode error in precision circuits. |
| 3 - +In | Non-inverting input | High-impedance input (10¹³Ω || 3pF); suitable for direct connection to high-Z sensors or passive filter outputs. |
| 4 - V− | Negative supply | Ground reference for single-supply operation; also serves as enable pin reference; must be low-impedance. |
| 5 - Out | Analog output | Class AB rail-to-rail output capable of sourcing/sinking 70mA; requires local 0.1µF bypass capacitor near pin. |
| 6 - V+ | Positive supply | Single-supply input (2.7V–5.5V); internal ESD diodes clamp inputs to V+ and V−; external current limiting required beyond ±0.5V. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit settling in 150ns | Enables use with 1.25MSPS 16-bit ADCs without dead-time insertion or oversampling penalties. |
| 3nV/√Hz input voltage noise | Minimizes added noise in front-end amplification of low-level signals (e.g., piezoelectric sensors, photodiode TIA stages). |
| Shutdown to 5µA | Supports microcontroller-gated operation in multi-channel DAQ systems, reducing average system power by >99% per channel. |
| Rail-to-rail output swing (±100mV) | Maximizes dynamic range in 5V single-supply systems, delivering >96% of full-scale voltage swing into 2kΩ loads. |
| Unity-gain stable | Eliminates need for external compensation components in gain-of-1 configurations, simplifying layout for buffer and level-shift applications. |
Applications
| 16-Bit ADC Input Driver | Low-Noise Preamplifier |
|---|---|
Use Scenario: Driving the ADS8401 16-bit, 1.25MSPS SAR ADC in a single-supply 5V data acquisition system. IC Role / Device Role / Timing Role: Precision buffer and gain stage providing fast settling, low THD+N, and full-scale output swing to meet ADC aperture uncertainty requirements. Use Value: Achieves >101dB SFDR and 84.3dB SNR at 10kHz, eliminating need for post-ADC digital correction in metrology-grade instruments. |
Use Scenario: Amplifying microvolt-level signals from MEMS accelerometers or strain-gauge bridges in structural health monitoring nodes. IC Role / Device Role / Timing Role: First-stage gain block with ultra-low input noise and high CMRR (>80dB) to reject supply and environmental interference. Use Value: Preserves signal integrity with <0.003% distortion and 3nV/√Hz noise floor, enabling sub-16-bit ENOB resolution in battery-operated edge sensors. |
| IF/RF Amplifier | Active Filtering |
Use Scenario: Intermediate-frequency amplification in 10–100MHz software-defined radio (SDR) receiver chains. IC Role / Device Role / Timing Role: Fixed-gain, broadband amplifier with 150MHz GBW and 80V/µs slew rate for linear signal amplification prior to quadrature demodulation. Use Value: Maintains <−99.3dB THD at 10kHz and stable frequency response up to 50MHz, supporting clean I/Q signal generation without image distortion. |
Use Scenario: Implementing 5th-order low-pass anti-aliasing filters in medical EEG/ECG front-ends with cutoff at 1kHz. IC Role / Device Role / Timing Role: High-speed op-amp in multiple feedback (MFB) or biquad topologies, leveraging low output impedance (<20Ω at DC) for precise pole placement. Use Value: Enables filter Q-factor accuracy within ±0.5% and passband ripple <0.05dB due to >95dB open-loop gain and minimal phase shift at corner frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA301AIDBVR | Same 6-pin SOT-23 package but no shutdown function; 10.5mA quiescent current; identical bandwidth and noise specs. | Lacks enable control - unsuitable for power-gated systems but offers slightly lower input offset drift (2.5μV/°C vs 3.5μV/°C). | Select OPA301AIDBVR only if shutdown is unnecessary and lowest possible offset drift is prioritized over power savings. |
| LMH6629MA/NOPB | Higher 1.5GHz GBW, 1.3nV/√Hz noise, but 12.5mA IQ and SO-8 package; not pin-compatible; requires dual supply or level-shifting. | Better suited for >100MHz RF gain blocks than 16-bit ADC driving; lacks rail-to-rail output and shutdown. | Choose LMH6629MA/NOPB only when bandwidth >500MHz is required and board area allows SO-8; not a drop-in replacement. |
Compared with OPA301AIDBVR, the OPA300AIDBVR adds critical power-gating capability at identical speed/noise performance; versus LMH6629MA/NOPB, it trades raw bandwidth for single-supply simplicity, rail-to-rail output, and integrated shutdown - making it optimal for portable, high-resolution data acquisition rather than RF signal chain amplification.
Availability
OPA300AIDBVR is available at Aetrix Electronics and suitable for 16-bit ADC input drivers, low-noise preamplifiers, and IF/RF amplifier designs requiring stable component supply across industrial temperature ranges (−40°C to +125°C) and long-lifecycle production programs.
Supply support for OPA300AIDBVR 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 high-performance op-amps and precision signal-chain solutions.
The OPAx30x product line was engineered specifically for 16-bit resolution systems demanding fast settling, low distortion, and low power - targeting data acquisition, instrumentation, and communications infrastructure where speed, accuracy, and efficiency converge.
FAQ
What is the maximum capacitive load the OPA300AIDBVR can drive stably in unity-gain configuration?
The OPA300AIDBVR can drive up to ~5pF of capacitive load directly in unity-gain without external compensation, as verified in Figure 5-16 of the datasheet. For larger loads (e.g., ADC input capacitance + PCB parasitics >10pF), a series resistor (RS = 20–75Ω depending on CL) between output and load restores stability while preserving bandwidth trade-offs appropriate for 16-bit settling requirements. Always verify phase margin with network analysis in final layout.
Does the OPA300AIDBVR require dual supplies, or is single-supply operation supported?
The OPA300AIDBVR is fully specified for single-supply operation from +2.7V to +5.5V, with rail-to-rail output swing (V− + 100mV to V+ − 100mV) and extended common-mode input range (V− − 0.2V to V+ − 0.9V). No dual supply is needed - it operates robustly with ground as V− and 3.3V or 5V as V+, making it ideal for battery-powered and industrial 3.3V/5V systems.
How does the enable pin of the OPA300AIDBVR interface with a 1.8V GPIO from an MCU?
The OPA300AIDBVR enable pin is referenced to V−, requiring a logic high ≥(V− + 2.5V) to activate. A 1.8V MCU GPIO cannot directly drive it when V− = 0V (i.e., single-supply ground). Interface requires either level-shifting (e.g., discrete NMOS or TI TXB0104) or using a pull-up to V+ with MCU-open-drain output - ensuring the enable node reaches ≥2.5V above V− under all operating conditions.
What is the typical input offset voltage drift over temperature for the OPA300AIDBVR?
The OPA300AIDBVR has a typical input offset voltage drift of 2.5μV/°C, with production distribution centered near this value (Figure 5-31 shows 90% of units within ±5μV/°C). This low drift ensures minimal baseline error accumulation across −40°C to +125°C, critical for unattended industrial sensors and calibration-free instrumentation where thermal gradients are unavoidable.
Can the OPA300AIDBVR replace the OPA2300 in a dual-channel design?
No - the OPA300AIDBVR is a single-channel amplifier in SOT-23-6, whereas the OPA2300 is a dual-channel device in VSSOP-10. They differ in channel count, pinout, package, and enable pin assignment (OPA2300 has separate EnableA/EnableB). For dual-channel equivalents, consider the OPA2300AIDGSR or OPA2301AIDR - neither is pin-compatible with OPA300AIDBVR, and PCB redesign is required.
OPA300AIDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 80V/µs
- Gain Bandwidth Product:
- 150 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 9.5mA
- Current - Output / Channel:
- 70 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
OPA300AIDBVR FAQ
1.How can I place an order for OPA300AIDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA300AIDBVR 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 OPA300AIDBVR reliable?
The price and inventory of OPA300AIDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA300AIDBVR is usually 5 days.
3.What payment methods are accepted for OPA300AIDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA300AIDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA300AIDBVR?
OPA300AIDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA300AIDBVR 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 OPA300AIDBVR?
For technical support, including OPA300AIDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA300AIDBVR requirements.
6.How does Aetrix verify that OPA300AIDBVR is sourced from the original manufacturer or authorized distributors?
All OPA300AIDBVR 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 OPA300AIDBVR meets industry standards.
7.What is the process for return or replacement of OPA300AIDBVR?
All OPA300AIDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA300AIDBVR, 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 OPA300AIDBVR part is unused and in its original packaging.
Return procedure for OPA300AIDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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