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Texas Instruments OPA2337EA/250G4
- Part No.:
- OPA2337EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
OPA2337EA/250G4.pdf
- Description:
- IC CMOS 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,279
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Product details
Overview
OPA2337EA/250G4 from Texas Instruments is a dual, rail-to-rail output CMOS operational amplifier in SOT23-8 package, designed for space-constrained, low-power applications. It features unity-gain stability, 3MHz gain-bandwidth, 1.2V/µs slew rate, ±10pA max input bias current, and operates from 2.5V to 5.5V single supply - ideal for photodiode pre-amplification and battery-powered instrumentation.
For engineers reviewing the OPA2337EA/250G4 datasheet, OPA2337EA/250G4 pinout, OPA2337EA/250G4 application, or OPA2337EA/250G4 equivalent, key selection criteria include its G = 1 stability, FET-input low-noise performance, rail-to-rail output swing down to 125mV from rails (RL = 25kΩ), 525µA per amplifier quiescent current, and compatibility with 2.5V–5.5V single-supply systems requiring high input impedance and minimal power draw.
Technical Context
The OPA2337EA/250G4 implements a CMOS input stage enabling ultra-low input bias current (±10pA max) and high input impedance (>10¹³ Ω), supporting precision sensing in high-impedance source applications like photodiode pre-amplifiers. Its rail-to-rail output stage delivers full-swing capability within 125mV of supply rails under 25kΩ load, maintaining linearity across the entire common-mode range (−0.2V to V+ − 1.2V).
As a unity-gain stable dual op amp, it uses independent internal circuitry to ensure <0.3µV/V channel separation and eliminate crosstalk, even under overload conditions. The device is specified over −40°C to +85°C and draws only 525µA per amplifier at 5V, enabling operation in portable medical instruments and low-power data acquisition systems without thermal compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz at G = 1 - enables stable amplification of signals up to ~300kHz with 60° phase margin in unity-gain buffer configurations. |
| Slew Rate | 1.2V/µs - supports clean 2Vpp signal reproduction at ≤1MHz without slew-induced distortion in single-supply systems. |
| Input Bias Current | ±10pA max - preserves signal integrity in high-impedance sensor interfaces (e.g., photodiodes, pH electrodes) with negligible DC error. |
| Supply Voltage Range | 2.5V to 5.5V - allows direct integration into Li-ion (3.0–4.2V), coin-cell (3V), or regulated 3.3V/5V systems without level-shifting. |
| Output Swing | Within 125mV of rails (RL = 25kΩ) - maximizes dynamic range in single-supply ADC driver stages, preserving >95% of available voltage headroom. |
| Quiescent Current | 525µA per amplifier - enables dual-channel signal conditioning in battery-powered devices with multi-year operating life on small cells. |
| Open-Loop Gain | 120dB typical - ensures <0.01% gain error in precision gain-setting networks using standard 1% resistors. |
Pinout & Package
SOT23-8 surface-mount package (DCN designator), 2.9mm × 2.8mm footprint, 1.45mm height, moisture sensitivity level 2 (260°C peak reflow), marked "A7".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply connection - must be bypassed with 0.01µF ceramic capacitor near pin for stability. |
| 2 | Out B | Output of second amplifier - rail-to-rail swing supports direct interface to SAR ADC reference inputs or analog switches. |
| 3 | −In B | Inverting input of second amplifier - high-impedance CMOS node; sensitive to PCB leakage and guarding required in pA-level designs. |
| 4 | +In B | Non-inverting input of second amplifier - referenced to ground or virtual ground in single-supply configurations. |
| 5 | Out A | Output of first amplifier - electrically isolated from Out B; enables independent signal paths with <−100dB crosstalk. |
| 6 | −In A | Inverting input of first amplifier - used in transimpedance configurations with photodiodes; requires low-leakage PCB layout. |
| 7 | +In A | Non-inverting input of first amplifier - accepts ground-referenced or biased input signals in single-supply instrumentation front-ends. |
| 8 | V− | Negative supply (typically ground in single-supply use) - shared return path; star grounding recommended to minimize inter-channel coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal fidelity in 2.5V–5.5V single-supply systems, eliminating need for negative rail generation in portable equipment. |
| FET-input architecture | Enables pA-level input bias current, critical for high-impedance sensor interfacing where leakage would otherwise dominate offset error. |
| Unity-gain stable | Guarantees stability without external compensation in G = 1 configurations - simplifies design of buffers, active filters, and ADC drivers. |
| Dual independent amplifiers | Prevents interaction between channels during overload or saturation, ensuring reliable operation in multi-signal monitoring systems. |
| Low quiescent current | 525µA per amplifier enables dual-channel signal conditioning in always-on wearable or IoT edge nodes powered by micro-batteries. |
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: Transimpedance amplifier converting photocurrent to voltage with minimal input loading. Use Value: ±10pA input bias current prevents signal corruption; rail-to-rail output drives 3.3V ADCs directly without level-shifting. | Use Scenario: Signal conditioning in handheld multimeters or portable ECG monitors running on coin cells. IC Role / Device Role: Dual-channel buffer and gain stage for sensor front-end and reference voltage scaling. Use Value: 525µA per amplifier extends battery life; 2.5V minimum supply enables operation down to end-of-life cell voltage. |
| Medical Instrument Front-End | ADC Driver for Low-Power Data Acquisition |
Use Scenario: Biopotential amplification in disposable biosensors with strict size and power constraints. IC Role / Device Role: First-stage gain and filtering before digitization in miniaturized diagnostic tools. Use Value: SOT23-8 package occupies <25% area of SO-8; high CMRR (90dB) rejects common-mode interference in noisy clinical environments. | Use Scenario: Driving the input of 12-bit micropower ADCs (e.g., ADS7822) in remote sensor nodes. IC Role / Device Role: Output buffer isolating ADC input from source impedance variations and ensuring fast settling. Use Value: 2µs 0.1% settling time (2V step) meets sampling requirements; rail-to-rail swing maximizes SNR in 3V systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual CMOS op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2340UA/2K5 | Higher GBW (5.5MHz), higher IQ (750µA), same SOT23-8 package and G = 1 stability. | Better for higher-frequency sensor signals (>500kHz); less suitable for ultra-low-power designs. | Select when bandwidth >3MHz is required and quiescent current budget allows +43% increase. |
| MCP6022-I/SN | Lower GBW (10MHz), lower IQ (1mA), SO-8 package, rail-to-rail I/O, but not unity-gain stable (min G = 2). | Requires gain ≥2; unsuitable for unity-gain buffers without compensation; larger footprint. | Choose only if SO-8 layout exists and gain ≥2 is acceptable; avoid for G = 1 photodiode TIA or ADC buffering. |
Compared with OPA2340UA/2K5 and MCP6022-I/SN, the OPA2337EA/250G4 offers the lowest quiescent current among unity-gain stable dual CMOS op amps in SOT23-8, making it optimal for battery-critical applications where 3MHz bandwidth suffices and PCB area is constrained.
Availability
OPA2337EA/250G4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, photodiode pre-amplification, and medical instrument front-ends requiring stable component supply, guaranteed traceability, and long-term lifecycle support.
Supply support for OPA2337EA/250G4 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPA2337EA/250G4 belongs to TI's MicroAmplifier™ series, engineered specifically for miniature, low-power, precision analog signal conditioning in space- and energy-constrained applications.
FAQ
What is the maximum operating temperature range for the OPA2337EA/250G4?
The OPA2337EA/250G4 is specified for operation from −40°C to +85°C ambient temperature, with absolute maximum junction temperature rated at 150°C. This range supports deployment in industrial handheld tools and portable medical devices exposed to variable environmental conditions. Thermal resistance (θJA) is 200°C/W for the SOT23-8 package, requiring minimal heatsinking in typical low-power layouts.
Does the OPA2337EA/250G4 require external compensation for unity-gain stability?
No, the OPA2337EA/250G4 is internally compensated for unity-gain stability and does not require external components to operate reliably at G = 1. This is confirmed in the datasheet's "DESCRIPTION" section and electrical characteristics table. The OPA2337EA/250G4 maintains phase margin >60° in unity-gain buffer configurations, eliminating risk of oscillation in photodiode TIA or ADC driver applications.
What is the input common-mode voltage range of the OPA2337EA/250G4?
The input common-mode voltage range of the OPA2337EA/250G4 extends from (V−) − 0.2V to (V+) − 1.2V, enabling true single-supply operation with inputs referenced to ground. At 5V supply, this spans −0.2V to +3.8V. Inputs beyond this range (but within absolute max ±0.5V of supplies) will not damage the device, though phase inversion is avoided per Figure 1 in the datasheet - a key reliability feature distinguishing OPA2337EA/250G4 from older op amp families.
Can the OPA2337EA/250G4 drive capacitive loads without instability?
The OPA2337EA/250G4 can drive moderate capacitive loads (≤100pF) stably in unity-gain configuration, as verified in the "SMALL-SIGNAL STEP RESPONSE" and "SMALL-SIGNAL OVERSHOOT vs LOAD CAPACITANCE" plots. For loads >100pF, isolation resistance (e.g., 10–50Ω in series with output) is recommended to maintain phase margin. The device's low output impedance and robust internal compensation make it more tolerant than many general-purpose op amps, but full capacitive load drive specs are not characterized beyond 100pF in the datasheet.
Is the OPA2337EA/250G4 RoHS compliant and lead-free?
Yes, the OPA2337EA/250G4 is RoHS compliant and features NiPdAu (NIPDAU) lead finish, as documented in TI's Package Option Addendum. It meets JEDEC MSL Level-2-260°C-1 Year handling requirements and is qualified for lead-free reflow soldering. The "G4" suffix in the part number explicitly denotes RoHS-compliant packaging and marking, confirming compliance for use in environmentally regulated industrial and medical product designs.
OPA2337EA/250G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- 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 (x2 Channels)
- 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:
- SOT-23-8
OPA2337EA/250G4 FAQ
1.How can I place an order for OPA2337EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2337EA/250G4 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 OPA2337EA/250G4 reliable?
The price and inventory of OPA2337EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2337EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA2337EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2337EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2337EA/250G4?
OPA2337EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2337EA/250G4 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 OPA2337EA/250G4?
For technical support, including OPA2337EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2337EA/250G4 requirements.
6.How does Aetrix verify that OPA2337EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA2337EA/250G4 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 OPA2337EA/250G4 meets industry standards.
7.What is the process for return or replacement of OPA2337EA/250G4?
All OPA2337EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2337EA/250G4, 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 OPA2337EA/250G4 part is unused and in its original packaging.
Return procedure for OPA2337EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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