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Texas Instruments OPA337EA/250
- Part No.:
- OPA337EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA337EA/250.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,213
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Product details
Overview
OPA337EA/250 from Texas Instruments is a rail-to-rail output, unity-gain stable CMOS operational amplifier in an 8-pin VSSOP (DGK) package. It delivers 3MHz gain-bandwidth, 1.2V/µs slew rate, 120dB open-loop gain, 10pA max input bias current, and operates from 2.5V to 5.5V single supply-ideal for photodiode pre-amplification in portable medical instruments.
For engineers reviewing the OPA337EA/250 datasheet, OPA337EA/250 pinout, OPA337EA/250 application, or OPA337EA/250 equivalent, key selection factors include its FET-input low-noise performance, rail-to-rail output swing down to 125mV from rails (RL = 25kΩ), −40°C to +85°C temperature range, and compatibility with space-constrained, battery-powered signal conditioning designs.
Technical Context
The OPA337EA/250 uses advanced CMOS process technology to achieve ultra-low input bias current (±10pA max) while maintaining high-speed operation and rail-to-rail output swing. Its input common-mode voltage range includes ground (−0.2V to V+ − 1.2V), enabling true single-supply functionality without level-shifting circuitry.
As a unity-gain stable amplifier, it supports G = 1 configurations without external compensation. It maintains 100dB minimum open-loop gain at 5kΩ load and exhibits 0.001% THD+N at 1kHz with 3VPP output-critical for precision analog front-ends driving ADCs or audio paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - supports stable closed-loop bandwidth up to ~2.8MHz in G = 1 configuration |
| Slew Rate | 1.2V/µs - enables clean 2V step response within 2µs (0.1% settling) |
| Input Bias Current | ±10pA max - preserves signal integrity in high-impedance sensor interfaces (e.g., photodiodes) |
| Open-Loop Gain | 120dB typ - ensures < 0.0025% gain error in precision DC-coupled amplifiers |
| Supply Voltage Range | 2.5V to 5.5V - operates directly from Li-ion, 3.3V, or 5V rails without regulation |
| Quiescent Current | 525µA per amplifier - enables multi-channel, battery-operated instrumentation with low standby power |
| Output Swing | 125mV from rail (RL = 25kΩ) - maximizes dynamic range in single-supply systems |
Pinout & Package
OPA337EA/250 is housed in an 8-pin VSSOP (DGK) package - 2.3mm × 2.0mm footprint, 0.5mm pitch, 1.0mm max height - optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−In) | Differential input node; high-impedance CMOS input (10¹³Ω) |
| 2 | Non-Inverting Input (+In) | Differential input node; accepts common-mode voltage down to −0.2V |
| 3 | Output (Out) | Rail-to-rail output capable of sourcing/sinking ±9mA |
| 4 | Ground (V−) | Negative supply terminal; referenced to system ground in single-supply use |
| 5 | NC | No internal connection; must be left unconnected or grounded per layout best practice |
| 6 | NC | No internal connection; must be left unconnected or grounded per layout best practice |
| 7 | Positive Supply (V+) | Single positive supply input; supports 2.5V–5.5V operation |
| 8 | NC | No internal connection; must be left unconnected or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range in single-supply systems by swinging within 125mV of V+ and V− rails |
| FET-input architecture | Enables photodiode and high-Z sensor interfacing with ≤10pA input bias current |
| Unity-gain stability | Operates reliably at G = 1 without external compensation components or risk of oscillation |
| Low quiescent current | 525µA per amplifier allows dual-channel integration in micropower applications (e.g., wearable biosensors) |
| Input common-mode range includes ground | Accepts signals down to −0.2V, eliminating need for negative supply or input biasing networks |
Applications
| Photodiode Pre-Amplifier | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying weak current from reverse-biased photodiodes in pulse oximeters or environmental light sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level photocurrent into measurable voltage with minimal input loading. Use Value: 10pA max input bias current prevents signal corruption; rail-to-rail output maximizes ADC utilization across 3.3V supply. | Use Scenario: Signal conditioning stage in handheld multimeters or portable ECG monitors. IC Role / Device Role / Timing Role: Precision DC-coupled gain block for sensor outputs prior to 12-bit SAR ADC sampling. Use Value: 120dB open-loop gain ensures < 0.0025% gain error; 525µA IQ extends battery life in always-on monitoring modes. |
| Medical Instrument Front-End | Audio System Line Driver |
Use Scenario: Low-noise amplification of biopotential signals (e.g., EEG, EMG) in compact diagnostic devices. IC Role / Device Role / Timing Role: First-stage amplifier with high CMRR (>74dB) rejecting power-line interference in unshielded environments. Use Value: 26nV/√Hz input voltage noise density preserves SNR; −40°C to +85°C rating supports clinical deployment. | Use Scenario: Driving line-level audio signals into 10kΩ loads in portable speakers or DAC output stages. IC Role / Device Role / Timing Role: Unity-gain buffer isolating DAC output from capacitive cable loads while preserving fidelity. Use Value: 0.001% THD+N at 1kHz ensures transparent audio reproduction; 3MHz GBW supports full 20kHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA337NA/250 | SOT23-5 package (5-pin), same electrical specs, no NC pins | Better suited for ultra-dense layouts where VSSOP footprint is prohibitive | Select when board area is constrained and only 5-pin routing is feasible |
| MCP6001T-I/OT | 1MHz GBW, 0.6V/µs slew rate, 100µA IQ, SOT23-5 | Lower power and cost, but insufficient speed/noise performance for photodiode or precision ADC drive | Choose only for non-critical, low-frequency general-purpose buffering |
Compared with OPA337NA/250, the OPA337EA/250 offers identical core performance in a smaller-pitch VSSOP package with enhanced thermal resistance (150°C/W vs 200°C/W for SOT23-5), while MCP6001T-I/OT trades off bandwidth and noise for ultra-low power-making it unsuitable for OPA337EA/250's target precision-sensing roles.
Availability
OPA337EA/250 is available at Aetrix Electronics and suitable for photodiode pre-amplifiers, battery-powered instrumentation, and medical instrument front-ends requiring stable component supply across extended product lifecycles.
Supply support for OPA337EA/250 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 over 90 years of innovation in precision signal chain solutions.
The OPA337 series belongs to TI's MicroAmplifier™ portfolio, designed specifically for miniature, low-power, rail-to-rail op-amp applications in space- and energy-constrained systems such as portable diagnostics and sensor nodes.
FAQ
What is the operating temperature range for the OPA337EA/250?
The OPA337EA/250 is specified for operation from −40°C to +85°C ambient temperature. This industrial-grade range ensures reliable performance in portable medical devices, handheld test equipment, and battery-powered instrumentation deployed in variable environmental conditions. The device also supports storage and junction temperatures up to +125°C.
Does the OPA337EA/250 require external compensation for unity-gain operation?
No, the OPA337EA/250 is unity-gain stable and does not require external compensation components. Its internal compensation ensures stable operation with closed-loop gains of G = 1, making it suitable for buffer configurations without risk of oscillation-unlike the higher-speed OPA338 series, which requires gain ≥ 5 or external compensation.
What is the maximum capacitive load the OPA337EA/250 can drive without instability?
The OPA337EA/250 can safely drive up to 100pF capacitive loads while maintaining 0.1% settling in 2µs under G = 1 conditions. For larger loads (e.g., >200pF), isolation resistors or feedback capacitor compensation may be required. Refer to Figure 3 in the SBOS077B datasheet for stability guidelines with reactive loads.
Can the OPA337EA/250 be used with a 2.5V single supply?
Yes, the OPA337EA/250 is fully specified for operation from 2.5V to 5.5V single supply. At 2.5V, it maintains rail-to-rail output swing (within 125mV of rails), 10pA max input bias current, and 120dB open-loop gain-enabling direct interface with low-voltage microcontrollers and energy-harvesting systems without level-shifting circuitry.
How does the OPA337EA/250 differ from the OPA2337EA/250?
The OPA337EA/250 is a single-channel amplifier in VSSOP-8 packaging, whereas the OPA2337EA/250 is a dual-channel version in SOT23-8. Both share identical electrical specifications (3MHz GBW, 1.2V/µs slew rate, unity-gain stability), but the OPA337EA/250 provides dedicated performance per channel with no crosstalk concerns-ideal when only one precision amplifier is needed in space-constrained layouts.
OPA337EA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.2V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 525µA
- Current - Output / Channel:
- 9 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA337EA/250 FAQ
1.How can I place an order for OPA337EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA337EA/250 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 OPA337EA/250 reliable?
The price and inventory of OPA337EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA337EA/250 is usually 5 days.
3.What payment methods are accepted for OPA337EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA337EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA337EA/250?
OPA337EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA337EA/250 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 OPA337EA/250?
For technical support, including OPA337EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA337EA/250 requirements.
6.How does Aetrix verify that OPA337EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA337EA/250 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 OPA337EA/250 meets industry standards.
7.What is the process for return or replacement of OPA337EA/250?
All OPA337EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA337EA/250, 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 OPA337EA/250 part is unused and in its original packaging.
Return procedure for OPA337EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA337EA/250 Tags
-
LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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