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Texas Instruments OPA2301AIDG4
- Part No.:
- OPA2301AIDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2301AIDG4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,682
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Product details
Overview
OPA2301AIDG4 from Texas Instruments is a dual-channel, low-noise (3nV/√Hz), 150MHz CMOS operational amplifier optimized for 16-bit ADC input driving and single-supply operation from +2.7V to +5.5V. It delivers 0.1% settling in 30ns, 0.003% THD+N at 1kHz, and rail-to-rail output swing within 100mV of supply rails under 2kΩ load - enabling high-fidelity signal conditioning in portable data acquisition systems.
For engineers reviewing the OPA2301AIDG4 datasheet, OPA2301AIDG4 pinout, OPA2301AIDG4 application, or OPA2301AIDG4 equivalent, key selection criteria include its dual-channel SOIC-8/VSSOP-8 packaging, shutdown capability (5µA quiescent current), unity-gain stability, and verified 16-bit settling performance in ADC front-end designs.
Technical Context
The OPA2301AIDG4 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 stable unity-gain operation. Its input stage features ultra-low bias current (±0.1pA typ) and high impedance (10¹³ Ω || 3pF), supporting precision sensor interfacing without loading.
Designed explicitly for single-supply 16-bit systems, it operates across −40°C to +125°C with guaranteed 95dB open-loop gain (RL = 2kΩ), 66dB CMRR over full common-mode range (V− −0.2V to V+ −0.9V), and PSRR >50μV/V - ensuring robust performance in noisy industrial and instrumentation environments.
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 loss. |
| Settling Time | 30ns to 0.1% (2V step, G=+1) ensures accurate sampling for ≥33MHz effective update rates in ADC drivers. |
| Voltage Noise | 3nV/√Hz (f >1MHz) minimizes added noise floor in low-amplitude preamplifier stages before ADC conversion. |
| THD+N | 0.003% at 1kHz, 3VPP, G=+1 preserves signal integrity for high-SFDR applications like IF/RF signal chains. |
| Supply Range | +2.7V to +5.5V single supply simplifies power architecture in battery-powered or mixed-voltage embedded systems. |
| Quiescent Current | 9.5mA per amplifier (typ) at 5.5V supports thermal management in compact dual-opamp layouts. |
| Output Swing | Within 100mV of rails (RL = 2kΩ) maximizes dynamic range utilization in 16-bit systems with limited headroom. |
Pinout & Package
OPA2301AIDG4 is available in SOIC-8 (D) and VSSOP-8 (DGK) packages. The SOIC-8 variant uses standard industry pinout compatible with PCB footprints for TI's OPA2301 family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OutA | Amplifier A output; drives external load or next stage with rail-to-rail swing and 20Ω open-loop output impedance. |
| 2 | −InA | Inverting input for Channel A; high-impedance node (10¹³ Ω) requiring guarded layout to minimize leakage error. |
| 3 | +InA | Non-inverting input for Channel A; matched to −InA for <7µV offset voltage and 140dB dc channel separation. |
| 4 | V− | Negative supply terminal; referenced for enable logic and internal biasing; accepts ground or negative rail down to −0.2V. |
| 5 | +InB | Non-inverting input for Channel B; electrically isolated from Channel A with >100dB ac channel separation at 5MHz. |
| 6 | −InB | Inverting input for Channel B; identical dc specs to Channel A, enabling matched differential pair configurations. |
| 7 | OutB | Amplifier B output; independent sourcing/sinking capability supports dual-path signal processing without crosstalk. |
| 8 | V+ | Positive supply terminal; supplies both channels; must be bypassed with ≥100nF ceramic capacitor near pin. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit settling in 150ns | Validated timing for direct interface with 1.25MSPS 16-bit ADCs like ADS8401, eliminating need for external settling verification. |
| Shutdown mode (5µA) | Reduces total system standby current by >99% per channel, extending battery life in portable instrumentation. |
| Unity-gain stable | Eliminates external compensation components in G=1 buffer or inverting amplifier configurations, reducing BOM count. |
| Single-supply operation | Supports rail-to-rail input common-mode range (V− −0.2V to V+ −0.9V), enabling direct connection to unipolar sensors. |
| Low distortion (0.003%) | Maintains SFDR >100dB in IF amplifier roles, critical for communications receivers and spectrum analyzers. |
Applications
| 16-bit ADC Input Driver | Low-Noise Preamplifier |
|---|---|
Use Scenario: Driving the analog input of a 1.25MSPS 16-bit SAR ADC (e.g., ADS8401) in a portable data logger. IC Role / Device Role / Timing Role: Dual-channel OPA2301AIDG4 buffers and conditions sensor signals while meeting strict 150ns 16-bit settling requirement. Use Value: Enables full 16-bit ENOB without external calibration, leveraging 0.003% THD+N and 3nV/√Hz noise to preserve SNR. |
Use Scenario: Amplifying microvolt-level outputs from piezoelectric accelerometers in structural health monitoring. IC Role / Device Role / Timing Role: First-stage preamp providing high-Z, low-noise gain before anti-alias filtering and digitization. Use Value: Ultra-low 0.1pA bias current prevents signal attenuation on high-impedance sources; 3nV/√Hz noise dominates only above 1kHz. |
| IF/RF Amplifier | Active Filtering |
Use Scenario: Intermediate-frequency amplification in 10–100MHz SDR receiver front ends with DC-coupled architecture. IC Role / Device Role / Timing Role: Fixed-gain non-inverting amplifier operating at G=2 with flat 0.1dB gain bandwidth to 100MHz. Use Value: 150MHz GBW and 80V/µs slew rate support clean amplification of modulated carriers without group delay distortion. |
Use Scenario: Implementing 4th-order Butterworth low-pass filter for anti-aliasing prior to 1MSps ADC sampling. IC Role / Device Role / Timing Role: Dual op-amp configured as cascaded 2nd-order sections using unity-gain stable topology. Use Value: Guaranteed stability at G=1 eliminates risk of oscillation in high-Q filter topologies; 95dB AOL maintains passband accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2300AIDGSR | VSSOP-10 package with dedicated enable pins per channel; 10-pin vs 8-pin footprint; same electrical specs. | Required when independent channel shutdown control is needed; not suitable for SOIC-8 or VSSOP-8 board space. | Select OPA2300AIDGSR only if per-channel enable functionality is mandatory and PCB layout accommodates 10-pin VSSOP. |
| LMH6629MA/NOPB | Higher 1.5GHz GBW but higher 5.5nV/√Hz noise; 12mA IQ; no shutdown; SOIC-8 pinout differs (non-compatible). | Better for >100MHz small-signal amplification where noise is secondary; unsuitable for low-power or 16-bit settling-critical roles. | Choose LMH6629MA/NOPB only for wideband RF gain blocks where speed outweighs noise/power trade-offs. |
Compared with OPA2301AIDG4, OPA2300AIDGSR adds per-channel enable control at the cost of larger footprint and higher assembly complexity, while LMH6629MA/NOPB trades 2× noise and no shutdown for 10× bandwidth - making OPA2301AIDG4 optimal for power-constrained, precision 16-bit signal chains.
Availability
OPA2301AIDG4 is available at Aetrix Electronics and suitable for 16-bit data acquisition, portable instrumentation, and industrial sensor signal conditioning requiring stable component supply across −40°C to +125°C operation.
Supply support for OPA2301AIDG4 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 focused on analog and embedded processing technologies, with decades of expertise in precision amplifiers and data converter interfaces.
The OPAx30x product line was engineered specifically for 16-bit resolution systems requiring fast settling, low distortion, and single-supply compatibility - targeting high-performance data acquisition, test equipment, and communications infrastructure.
FAQ
What is the maximum capacitive load the OPA2301AIDG4 can drive stably in unity-gain configuration?
The OPA2301AIDG4 is capable of driving a few picofarads of capacitive load without compromising stability in unity-gain configuration. Figure 5-16 in the datasheet shows that with RS = 40Ω and CL = 10pF, the frequency response remains stable. Board-level parasitic capacitance must be minimized through proper layout to avoid unintended peaking or oscillation - typical stable operation requires CL ≤ 5pF without series resistance.
Does the OPA2301AIDG4 support dual or split-supply operation?
The OPA2301AIDG4 is specified for single-supply operation from +2.7V to +5.5V, but it can operate with split supplies (e.g., ±2.5V) as long as total voltage remains within 2.7V to 5.5V and common-mode input range (V− −0.2V to V+ −0.9V) is respected. The enable function is referenced to V−, so logic levels must be referenced accordingly in split-supply setups.
What is the typical quiescent current of the OPA2301AIDG4 at 25°C and 5V supply?
The typical quiescent current of the OPA2301AIDG4 is 9.5mA per amplifier at TA = 25°C and VS = 5V. Total device current is therefore ~19mA for both channels active. This value increases to 13mA per amplifier at the full temperature range (−40°C to +125°C), as confirmed in Section 5.4 Electrical Characteristics.
Is the OPA2301AIDG4 pin-compatible with other members of the OPAx30x family?
The OPA2301AIDG4 in SOIC-8 (D) and VSSOP-8 (DGK) packages shares identical pinouts with OPA2301AID and OPA2301AIDR variants. However, it is not pin-compatible with OPA2300 (VSSOP-10) or single-channel OPA301/OPA300 due to differing channel count and pin assignments - always verify package-specific pin configuration in Figures 4-4 and 4-6 of the datasheet.
What is the input common-mode voltage range for the OPA2301AIDG4 at 5V supply?
At VS = 5V, the input common-mode voltage range for the OPA2301AIDG4 is from (V−) − 0.2V to (V+) − 0.9V, i.e., −0.2V to +4.1V when V− = 0V and V+ = 5V. This allows the device to accept inputs near ground while maintaining rail-to-rail output swing - essential for single-supply sensor interfaces where signals may approach the negative rail.
OPA2301AIDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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:
- 8-SOIC
OPA2301AIDG4 FAQ
1.How can I place an order for OPA2301AIDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2301AIDG4 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 OPA2301AIDG4 reliable?
The price and inventory of OPA2301AIDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2301AIDG4 is usually 5 days.
3.What payment methods are accepted for OPA2301AIDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2301AIDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2301AIDG4?
OPA2301AIDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2301AIDG4 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 OPA2301AIDG4?
For technical support, including OPA2301AIDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2301AIDG4 requirements.
6.How does Aetrix verify that OPA2301AIDG4 is sourced from the original manufacturer or authorized distributors?
All OPA2301AIDG4 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 OPA2301AIDG4 meets industry standards.
7.What is the process for return or replacement of OPA2301AIDG4?
All OPA2301AIDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2301AIDG4, 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 OPA2301AIDG4 part is unused and in its original packaging.
Return procedure for OPA2301AIDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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