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Texas Instruments OPA300AIDRG4
- Part No.:
- OPA300AIDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA300AIDRG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,164
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Product details
Overview
OPA300AIDRG4 from Texas Instruments is a single-channel, low-noise, fast-settling CMOS operational amplifier optimized for 16-bit ADC input driving. It delivers 150MHz unity-gain bandwidth, 3nV/√Hz input voltage noise, 0.003% THD+N at 1kHz, 16-bit settling in 150ns, and operates from +2.7V to +5.5V single supply - enabling high-fidelity signal conditioning in portable data acquisition systems.
For engineers reviewing the OPA300AIDRG4 datasheet, OPA300AIDRG4 pinout, OPA300AIDRG4 application, or OPA300AIDRG4 equivalent, this page provides verified specifications, SOIC-8 package details, shutdown functionality, output swing behavior (±100mV from rails), and real-world use cases including IF/RF amplification and active filtering where precision, speed, and low distortion are critical.
Technical Context
The OPA300AIDRG4 employs a classic two-stage CMOS topology with folded-cascode input and Class AB output stage, enabling rail-to-rail output swing (within 100mV of V+ and V−) while maintaining stability at unity gain. Its differential input pair is biased for maximum slew rate (80V/μs) without compromising 150MHz bandwidth or phase margin.
It features a digital enable pin referenced to V−, supporting logic-high activation (>V− + 2.5V) and low-power shutdown (5μA quiescent current). The device is fully specified over −40°C to +125°C and includes ESD protection diodes on all pins tied to supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 150MHz unity-gain bandwidth enables stable amplification up to UHF frequencies in IF/RF stages. |
| Settling time | 150ns to 16-bit accuracy ensures precise sampling for 1.25MSPS ADCs like ADS8401 without aperture error. |
| Voltage noise | 3nV/√Hz at >1MHz preserves SNR in wideband preamplifier and sensor interface applications. |
| THD+N | 0.003% at 1kHz, 3VPP supports high-fidelity analog signal chains in audio and instrumentation. |
| Supply range | +2.7V to +5.5V single supply simplifies power design in battery-powered and industrial 3.3V/5V systems. |
| Shutdown current | 5μA in disabled state extends battery life in intermittent-sampling data loggers and portable test equipment. |
| Output swing | Within 100mV of rails into 2kΩ load maintains dynamic range in single-supply 16-bit systems. |
Pinout & Package
OPA300AIDRG4 is packaged in an 8-pin SOIC (D) body with standard JEDEC MS-012AC footprint (5.3mm × 6.2mm), RoHS-compliant NiPdAu lead finish, and MSL Level-2 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Enable | Digital control input; logic high (>V− + 2.5V) enables amplifier; logic low ( |
| 2 | −In | Inverting input node; high-impedance CMOS input (±0.1pA bias current) minimizes loading on feedback networks. |
| 3 | +In | Non-inverting input node; common-mode range extends from (V−) − 0.2V to (V+) − 0.9V for wide input flexibility. |
| 4 | V− | Negative supply terminal; referenced ground for enable logic and internal biasing in single-supply configurations. |
| 5 | NC | No connection; internally unconnected; must remain floating or grounded per layout best practices. |
| 6 | VOUT | Analog output; capable of sourcing/sinking 70mA short-circuit current and driving ≥100pF loads with series resistor stabilization. |
| 7 | V+ | Positive supply terminal; supports operation up to 5.5V; absolute maximum rating is 7V. |
| 8 | NC | No connection; internally unconnected; no external connection required. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Guaranteed stable operation with no external compensation required, reducing BOM count and layout complexity. |
| Rail-to-rail output | Swings within 100mV of V+ and V− into 2kΩ, maximizing usable dynamic range in 3.3V/5V single-supply systems. |
| Low distortion | 0.003% THD+N at 1kHz enables clean signal amplification for 16-bit ADC front-ends without harmonic corruption. |
| Fast enable/disable | Turn-on time <10μs and turn-off time <1μs support gated amplification and time-multiplexed analog buses. |
| ESD-protected inputs | 4kV HBM rating with internal diode clamps allows robust handling in automated assembly and field-replaceable modules. |
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 150ns 16-bit settling, low THD+N, and full-scale output swing to maximize ENOB. Use Value: Achieves 84.3dB SNR and −99.3dB THD in measured system performance, directly enabling 16-bit resolution at full sample rate. |
Use Scenario: Amplifying microvolt-level signals from piezoelectric sensors or photodiode transimpedance outputs. IC Role / Device Role / Timing Role: First-stage voltage amplifier with 3nV/√Hz noise density and 150MHz bandwidth to preserve signal integrity before filtering or digitization. Use Value: Enables detection of sub-10μV signals in 10kHz bandwidth without noise floor degradation from amplifier contribution. |
| IF/RF Amplifier | Active Filtering |
Use Scenario: Intermediate-frequency amplification in 10–100MHz SDR receiver front-ends using surface-mount ceramic filters. IC Role / Device Role / Timing Role: Fixed-gain (G = 2) broadband amplifier with 0.1dB gain flatness up to 100MHz and minimal group delay variation. Use Value: Maintains amplitude and phase fidelity across multi-MHz IF bands, supporting accurate demodulation of QPSK and OFDM signals. |
Use Scenario: Implementing 4th-order low-pass anti-aliasing filter preceding a 16-bit ADC in motor control current sensing. IC Role / Device Role / Timing Role: Dual-role op amp serving as both active filter integrator and output buffer with low output impedance (<20Ω at DC). Use Value: Provides sharp roll-off beyond 100kHz while driving 100pF PCB trace capacitance without peaking or instability. |
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 |
|---|---|---|---|
| OPA301AIDR | No enable/shutdown pin; 12mA typical quiescent current vs 9.5mA; identical bandwidth, noise, and settling specs. | Suitable for always-on circuits; not appropriate for power-gated or battery-constrained designs requiring <5μA sleep current. | Select OPA301AIDR when shutdown functionality is unnecessary and cost optimization is prioritized. |
| LMH6629MA/NOPB | Higher 1.5GHz GBW but 6.5nV/√Hz noise; 13.5mA IQ; no integrated shutdown; requires dual supply for full common-mode range. | Better for >100MHz small-signal gain stages; less suitable for low-noise, single-supply 16-bit ADC driver roles. | Choose LMH6629MA/NOPB only when bandwidth demand exceeds 150MHz and noise budget allows >2× increase. |
Compared with OPA301AIDR, OPA300AIDRG4 adds shutdown control with negligible trade-offs in speed or noise; versus LMH6629MA/NOPB, it trades bandwidth for lower noise, lower power, and single-supply simplicity - making it optimal for precision 16-bit data acquisition rather than RF gain blocks.
Availability
OPA300AIDRG4 is available at Aetrix Electronics and suitable for high-resolution data acquisition, portable instrumentation, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for OPA300AIDRG4 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 designed specifically for 16-bit resolution systems demanding low noise, fast settling, and single-supply operation - targeting ADC drivers, medical imaging front-ends, and test equipment signal paths.
FAQ
What is the function of Pin 1 (Enable) on the OPA300AIDRG4?
Pin 1 is the digital Enable input, referenced to V−. A logic high (>V− + 2.5V) activates the amplifier; a logic low ( No - the OPA300AIDRG4 has a limited common-mode input range of (V−) − 0.2V to (V+) − 0.9V. It does not support input voltages within 0.9V of V+, so it is not rail-to-rail input. However, its output swings to within 100mV of both rails into 2kΩ, qualifying as rail-to-rail output. Yes, but stability must be ensured. The OPA300AIDRG4 can drive ≤10pF directly in unity gain; for larger loads, add a series resistor (e.g., 20–75Ω) between output and capacitor as shown in Figure 5-16. This isolates the load capacitance from the op amp's output impedance, preventing peaking and oscillation. The absolute maximum junction temperature for OPA300AIDRG4 is 150°C. The device is fully specified over −40°C to +125°C ambient temperature, and thermal derating must be applied above 125°C ambient to maintain TJ ≤ 150°C based on package thermal resistance (θJA ≈ 120°C/W for SOIC-8). OPA300AIDRG4 (SOIC-8) and OPA300AIDBVR (SOT-23-6) share identical electrical specifications - same bandwidth, noise, settling, and shutdown behavior. The difference lies solely in package: SOIC-8 offers easier prototyping and higher power dissipation capability, while SOT-23-6 targets ultra-compact PCB layouts with tighter thermal constraints.Does the OPA300AIDRG4 support true rail-to-rail input operation?
Can the OPA300AIDRG4 drive capacitive loads, and what is the recommended approach?
What is the maximum operating junction temperature for the OPA300AIDRG4?
How does the OPA300AIDRG4 compare to the OPA300AIDBVR in terms of performance and application?
OPA300AIDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- 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:
- 8-SOIC
OPA300AIDRG4 FAQ
1.How can I place an order for OPA300AIDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA300AIDRG4 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 OPA300AIDRG4 reliable?
The price and inventory of OPA300AIDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA300AIDRG4 is usually 5 days.
3.What payment methods are accepted for OPA300AIDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA300AIDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA300AIDRG4?
OPA300AIDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA300AIDRG4 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 OPA300AIDRG4?
For technical support, including OPA300AIDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA300AIDRG4 requirements.
6.How does Aetrix verify that OPA300AIDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA300AIDRG4 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 OPA300AIDRG4 meets industry standards.
7.What is the process for return or replacement of OPA300AIDRG4?
All OPA300AIDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA300AIDRG4, 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 OPA300AIDRG4 part is unused and in its original packaging.
Return procedure for OPA300AIDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA300AIDRG4 Tags
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LM358DT
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LM358DR
Texas Instruments
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LM2902DR
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LM358P
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