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Texas Instruments OPA301AIDBVR
- Part No.:
- OPA301AIDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA301AIDBVR.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,401
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Product details
Overview
OPA301AIDBVR from Texas Instruments is a single-channel, low-noise, fast-settling CMOS operational amplifier in a 5-pin SOT-23 package. It delivers 150MHz unity-gain bandwidth, 3nV/√Hz input voltage noise, and 150ns 16-bit settling time, operating from +2.7V to +5.5V single supply. It serves as a precision ADC input driver in high-resolution data acquisition systems.
For engineers reviewing the OPA301AIDBVR datasheet, OPA301AIDBVR pinout, OPA301AIDBVR application, or OPA301AIDBVR equivalent, key selection criteria include its rail-to-rail output swing (±100mV from rails), shutdown current of 5µA, 0.003% THD+N at 1kHz, and compatibility with 16-bit ADCs such as ADS8401 in space-constrained portable designs.
Technical Context
The OPA301AIDBVR implements a classic two-stage CMOS topology with folded-cascode gain stage and Class AB output stage, enabling both high slew rate (80V/µs) and unity-gain stability. Its input stage features ultra-low bias current (±0.1pA typical) and high common-mode input range (V− − 0.2V to V+ − 0.9V).
Unlike the OPA300 variant, the OPA301AIDBVR lacks an enable/shutdown pin - confirmed by its 5-pin SOT-23 pinout (V+, −In, Out, V−, +In) and absence of Enable functionality in all OPA301-specific package diagrams and electrical tables. It is specified across −40°C to +125°C and optimized for single-supply signal conditioning where power efficiency and noise performance are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 150MHz unity-gain bandwidth enables stable amplification of signals up to ~75MHz at G = +2 without phase margin erosion. |
| Settling Time | 150ns to 16-bit accuracy (0.0015%) ensures clean sampling for 1.25MSPS ADCs like ADS8401 without aperture error degradation. |
| Input Voltage Noise | 3nV/√Hz (typical, f > 1MHz) preserves SNR in low-level sensor and preamplifier stages before ADC digitization. |
| THD+N | 0.003% at 1kHz, 3VPP output confirms minimal harmonic distortion in IF/RF and active filter applications. |
| Supply Range | +2.7V to +5.5V single supply supports battery-powered instrumentation and industrial sensors without dual-rail generation. |
| Output Swing | Within 100mV of each rail (RL ≥ 2kΩ) allows full utilization of ADC input range in unipolar systems. |
| Quiescent Current | 9.5mA typical at 25°C balances speed and power for continuous high-fidelity signal paths. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9mm × 1.6mm × 1.15mm body, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V−) | Negative supply terminal | Reference for single-supply operation; connects to ground or negative rail; supports rail-to-rail input common-mode down to V− − 0.2V. |
| 2 (−In) | Inverting input | Differential input node; high-impedance (10¹³ Ω || 3pF); accepts signals within common-mode range without clipping. |
| 3 (Out) | Amplifier output | Class AB stage delivers ±100mV rail-to-rail swing into ≥2kΩ loads; drives capacitive loads up to ~5pF stably with proper layout. |
| 4 (V+) | Positive supply terminal | Accepts 2.7V–5.5V; powers internal biasing and output stage; PSRR > 50dB up to 100kHz ensures supply ripple rejection. |
| 5 (+In) | Non-inverting input | High-impedance differential input; matched to −In for optimal CMRR (66–80dB); enables precision buffer and gain configurations. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit settling in 150ns | Enables direct interface with 1.25MSPS 16-bit ADCs (e.g., ADS8401) without external sample-and-hold circuitry. |
| 3nV/√Hz input voltage noise | Maintains >90dB SNR in front-end preamplifiers for strain gauges, piezoelectric sensors, and medical EEG/ECG circuits. |
| 0.003% THD+N at 1kHz | Preserves signal fidelity in active bandpass filters and IF amplifiers for communications receivers and spectrum analyzers. |
| Rail-to-rail output swing (±100mV) | Maximizes dynamic range utilization when driving unipolar-input ADCs, reducing required gain staging and quantization loss. |
| Unity-gain stable | Eliminates need for external compensation in G = +1 buffers, simplifying layout and reducing BOM count in signal chain interfaces. |
Applications
| 16-bit ADC Input Driver | Low-Noise Preamplifier |
|---|---|
Use Scenario: Driving the analog input of the ADS8401 16-bit, 1.25MSPS SAR ADC in a portable data logger. IC Role / Device Role / Timing Role: Precision buffer and gain stage ensuring <150ns settling to 16-bit accuracy before ADC sampling edge. Use Value: Eliminates aperture uncertainty and maintains SFDR >101dB by delivering clean, fast-settling signal within ADC's acquisition window. |
Use Scenario: Amplifying microvolt-level output from a piezoelectric vibration sensor in predictive maintenance hardware. IC Role / Device Role / Timing Role: First-stage low-noise, high-input-impedance amplifier with DC-coupled output for downstream filtering and digitization. Use Value: 3nV/√Hz noise floor preserves weak signal integrity; 10¹³ Ω input impedance prevents sensor loading and resonance damping. |
| IF/RF Amplifier | Active Filtering |
Use Scenario: Intermediate-frequency amplification in a 10–50MHz software-defined radio receiver front end. IC Role / Device Role / Timing Role: Fixed-gain (G = +2 or −2) broadband amplifier between mixer and demodulator, operating at 5V single supply. Use Value: 150MHz GBW and 0.003% THD+N ensure linear amplification without intermodulation distortion across multi-MHz channels. |
Use Scenario: Implementing a 4th-order low-pass anti-aliasing filter preceding a 16-bit ADC in industrial process monitoring. IC Role / Device Role / Timing Role: Dual-opamp biquad section (using two OPA301s per filter stage) with precise pole placement and low sensitivity to component drift. Use Value: High open-loop gain (>95dB) and low input bias current maintain filter Q-factor and cutoff accuracy over temperature and time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA300AIDBVR | Includes shutdown pin (pin 1), 6-pin SOT-23; quiescent current drops to 5µA in shutdown mode; otherwise identical bandwidth, noise, and settling. | Required where intermittent operation or battery life extension via enable control is needed; not pin-compatible due to extra shutdown pin. | Select OPA300AIDBVR only if system-level power sequencing mandates active shutdown control; otherwise OPA301AIDBVR offers simpler routing and lower pin count. |
| LMH6629MA/NOPB | Higher 1.5GHz GBW but higher 1.9nV/√Hz noise; 12mA IQ; SO-8 only; no rail-to-rail output (swing limited to V+ − 1.2V / V− + 1.2V). | Better for >100MHz small-signal amplification (e.g., RF gain blocks), but unsuitable for rail-to-rail ADC driving or low-noise sensor interfaces. | Choose LMH6629MA/NOPB only for wideband AC-coupled gain stages above 50MHz; avoid for precision DC-coupled or low-voltage single-supply use cases. |
Compared with OPA301AIDBVR, the OPA300AIDBVR adds shutdown capability at the cost of one extra pin and slightly larger footprint, while the LMH6629MA/NOPB trades noise and output swing for raw bandwidth - making OPA301AIDBVR the optimal balance for 16-bit ADC drivers and low-noise preamps in compact, single-supply systems.
Availability
OPA301AIDBVR is available at Aetrix Electronics and suitable for high-resolution data acquisition, portable instrumentation, and industrial sensor signal conditioning requiring stable component supply and guaranteed long-term manufacturability.
Supply support for OPA301AIDBVR 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 and data converter interfaces.
The OPAx30x product line was designed specifically for 16-bit resolution systems, emphasizing fast settling, low distortion, and single-supply operation - directly addressing the signal-chain bottlenecks in modern high-speed data acquisition and precision measurement equipment.
FAQ
What is the maximum capacitive load the OPA301AIDBVR can drive stably?
The OPA301AIDBVR is unity-gain stable but sensitive to capacitive loading. According to TI's SBOS271F datasheet Figure 5-16, it can drive ≤5pF capacitively without external isolation. For larger loads (e.g., ADC input capacitance + PCB parasitics >5pF), a series resistor (RS = 20–75Ω depending on CL) must be placed between the output and load to maintain phase margin and prevent peaking or oscillation. Layout minimization of stray capacitance is essential.
Does the OPA301AIDBVR have a shutdown pin?
No, the OPA301AIDBVR does not include a shutdown function. Its 5-pin SOT-23 package contains only V+, −In, Out, V−, and +In terminals - confirmed by Figures 4-2 and 4-4 in the SBOS271F datasheet and absence of Enable-related specifications in its electrical characteristics table. The pin-compatible OPA300AIDBVR (6-pin SOT-23) provides shutdown capability.
What is the input common-mode voltage range for the OPA301AIDBVR?
The OPA301AIDBVR supports an input common-mode voltage range from (V−) − 0.2V to (V+) − 0.9V, as specified in Section 5.4 of SBOS271F. At V+ = 5V and V− = 0V, this translates to −0.2V to +4.1V - enabling true single-supply operation with inputs extending below ground and well within the positive rail, critical for interfacing with bipolar sensors or level-shifted signals.
Can the OPA301AIDBVR drive the ADS8401 16-bit ADC directly?
Yes, the OPA301AIDBVR is explicitly validated to drive the ADS8401 16-bit, 1.25MSPS SAR ADC, as shown in Figure 7-2 and Table 7-1 of SBOS271F. With 150ns 16-bit settling, 0.003% THD+N, and rail-to-rail output swing, it meets the ADC's acquisition-time and distortion requirements, achieving SFDR >101dB and SNR >84dB in the reference configuration.
What is the operating temperature range for the OPA301AIDBVR?
The OPA301AIDBVR is fully specified over the industrial temperature range of −40°C to +125°C, as stated in the "Description" section and confirmed in Section 5.3 (Recommended Operating Conditions) and Package Addendum of SBOS271F. All key parameters - including offset voltage drift (2.5μV/°C typ), quiescent current, and bandwidth - are guaranteed across this full range.
OPA301AIDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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-23-5
OPA301AIDBVR FAQ
1.How can I place an order for OPA301AIDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA301AIDBVR 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 OPA301AIDBVR reliable?
The price and inventory of OPA301AIDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA301AIDBVR is usually 5 days.
3.What payment methods are accepted for OPA301AIDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA301AIDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA301AIDBVR?
OPA301AIDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA301AIDBVR 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 OPA301AIDBVR?
For technical support, including OPA301AIDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA301AIDBVR requirements.
6.How does Aetrix verify that OPA301AIDBVR is sourced from the original manufacturer or authorized distributors?
All OPA301AIDBVR 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 OPA301AIDBVR meets industry standards.
7.What is the process for return or replacement of OPA301AIDBVR?
All OPA301AIDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA301AIDBVR, 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 OPA301AIDBVR part is unused and in its original packaging.
Return procedure for OPA301AIDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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