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Texas Instruments OPA2703EA/250
- Part No.:
- OPA2703EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2703EA/250.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:889
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Product details
Overview
OPA2703EA/250 from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for unity-gain stable operation with 1 MHz gain-bandwidth product, 0.6 V/µs slew rate, and ultra-low 160 µA quiescent current per amplifier. It operates from ±2 V to ±6 V dual supplies (or 4 V to 12 V single supply), delivers 40 mV rail-to-rail output swing into 100 kΩ, and targets precision signal conditioning in space-constrained, low-power systems such as portable data acquisition and sensor interfaces.
For engineers reviewing the OPA2703EA/250 datasheet, OPA2703EA/250 pinout, OPA2703EA/250 application, or OPA2703EA/250 equivalent, key selection considerations include its MSOP-8 package footprint, guaranteed –40°C to +85°C operation, 160 µV max input offset voltage, 90 dB full-scale CMRR, and compatibility with rail-to-rail input signals extending 300 mV beyond supply rails.
Technical Context
The OPA2703EA/250 implements a complementary input stage-parallel N-channel and P-channel differential pairs-to achieve true rail-to-rail input common-mode range, enabling operation with inputs up to 300 mV beyond V+ or V–. Its class AB output stage supports rail-to-rail output swing down to 40 mV from either rail under light loads.
This dual op amp is unity-gain stable and specified for closed-loop gains ≥1, distinguishing it from the higher-speed OPA2704 family (optimized for G ≥ 5). It maintains 100 dB open-loop gain (AOL) at 20 kΩ load and exhibits < 4 µV/°C offset drift over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 1 MHz - Enables stable unity-gain buffer and low-noise signal amplification up to audio frequencies without phase margin loss. |
| Slew Rate | 0.6 V/µs - Supports clean 10 kHz full-scale sine wave output with ≤0.01% THD+N at G = +1. |
| Input Offset Voltage | ±160 µV max - Ensures ≤1.6 mV error in 10 V full-scale measurement systems without trimming. |
| Quiescent Current | 160 µA per amplifier - Allows dual-channel operation from coin-cell or energy-harvesting sources with <330 µA total IQ. |
| CMRR | 90 dB full-scale - Rejects >30 kΩ unbalanced source impedance noise in single-ended sensor front-ends. |
| Rail-to-Rail Input | Extends 300 mV beyond V+ and V– - Interfaces directly with 0–5 V ADC references or battery-monitoring dividers without level-shifting. |
| Output Swing | Within 40 mV of rails (100 kΩ) - Maximizes dynamic range in 3.3 V or 5 V systems, preserving >98% of available voltage headroom. |
Pinout & Package
OPA2703EA/250 is packaged in an 8-pin VSSOP (DGK) - a 3.0 mm × 3.0 mm, 0.65 mm pitch surface-mount package with exposed thermal pad, rated MSL-2-260°C-1 year and specified for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V– (Amp A negative supply) | Ground or negative rail connection for Channel A; must be bypassed with 1 µF tantalum + 1000 pF ceramic. |
| 2 | Inverting Input (A) | High-impedance (5 TΩ || 4 pF) node accepting rail-to-rail input signals; protected by ESD diodes. |
| 3 | Non-Inverting Input (A) | Same high-Z, rail-to-rail input capability as Pin 2; complementary pair enables full input range coverage. |
| 4 | Output (A) | Class AB rail-to-rail output capable of sourcing/sinking ±10 mA; swings to within 40 mV of V+ or V–. |
| 5 | Output (B) | Independent rail-to-rail output for Channel B; electrically isolated from Channel A except via shared supplies. |
| 6 | Non-Inverting Input (B) | Identical input structure to Pin 3; supports matched dual-channel configurations like instrumentation preamps. |
| 7 | Inverting Input (B) | Identical to Pin 2; enables dual feedback networks without crosstalk-induced CMRR degradation. |
| 8 | V+ (Amp B positive supply) | Shared positive supply rail for both amplifiers; requires local decoupling adjacent to Pin 8. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables direct interface with 3.3 V ADCs and DACs without external level shifters or supply boosting. |
| 160 µA per amplifier IQ | Supports always-on sensor monitoring in battery-powered IoT nodes with multi-year runtime on CR2032 cells. |
| 160 µV max VOS | Reduces calibration overhead in 16-bit data acquisition systems where 1 LSB = 153 µV (at 10 V full scale). |
| 90 dB CMRR | Maintains accuracy in noisy industrial environments with long sensor cables and shared ground returns. |
| MSOP-8 package | Provides dual-channel performance in 9 mm² area - 60% smaller than SO-8 - ideal for wearable and portable medical devices. |
Applications
| Portable Data Acquisition | Automotive Cabin Sensors |
|---|---|
|
Use Scenario: Signal conditioning for thermistor, RTD, or bridge-based pressure sensors in handheld test meters. IC Role / Device Role / Timing Role: Dual-channel buffer and gain stage - Channel A buffers reference voltage, Channel B amplifies sensor output with matched thermal tracking. Use Value: 160 µA per amplifier enables >100-hour battery life on two AA cells while maintaining 16-bit effective resolution via low VOS and high CMRR. |
Use Scenario: Occupancy detection using capacitive proximity sensing in automotive seatbelt or door-handle modules. IC Role / Device Role / Timing Role: High-input-impedance transducer amplifier driving SAR ADC inputs with rail-to-rail swing to maximize SNR. Use Value: Rail-to-rail input accepts 0–VBAT sensor signals directly; 40 mV output swing preserves >99% dynamic range at 5 V supply. |
| Low-Power Medical Wearables | Industrial Transmitter Front-Ends |
|
Use Scenario: Biopotential signal amplification (ECG, EMG) in patch-style monitors with strict size and power constraints. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ultra-low input bias current (1 pA) minimizing electrode polarization error. Use Value: 1 pA IB prevents DC drift in high-Z dry-electrode interfaces; MSOP-8 footprint fits sub-2 cm² PCB real estate. |
Use Scenario: 4–20 mA loop transmitter conditioning for temperature or flow sensors in factory automation. IC Role / Device Role / Timing Role: Precision voltage-to-current converter input stage with low PSRR (20 µV/V) ensuring immunity to supply ripple. Use Value: 20 µV/V PSRR limits output current error to <0.1 µA under 100 mV supply ripple - well below 0.1% of full scale. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Chopper-stabilized (0.02 µV/°C drift), 350 µA IQ, 350 kHz GBW, SO-8 only | Better DC precision but lower bandwidth and higher power; unsuitable for >10 kHz signal paths | Select when ultra-low drift dominates over speed and quiescent current. |
| LMV358IDR | General-purpose CMOS, 80 µA IQ, 1 MHz GBW, but only rail-to-rail output (not input), SO-8 | Lacks rail-to-rail input - cannot interface directly with 0 V referenced sensors or DAC outputs | Select only if input common-mode range ≥1 V from rail is acceptable and cost is primary constraint. |
Compared with OPA2333AIDR and LMV358IDR, the OPA2703EA/250 uniquely balances rail-to-rail input/output, 1 MHz bandwidth, and 160 µA quiescent current in a space-saving MSOP-8 package - making it optimal for dual-channel, battery-operated precision analog front-ends where both dynamic range and power efficiency are critical.
Availability
OPA2703EA/250 is available at Aetrix Electronics and suitable for portable data acquisition, automotive cabin sensors, and low-power medical wearables requiring stable component supply across extended production lifecycles.
Supply support for OPA2703EA/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 delivering analog and embedded processing solutions with emphasis on reliability, precision, and energy efficiency.
The OPA703/2703/4703 series was designed specifically for low-power, rail-to-rail signal conditioning in portable, sensor, and data acquisition systems - prioritizing input/output voltage range, quiescent current, and DC precision over raw speed.
FAQ
What is the maximum operating temperature range for the OPA2703EA/250?
The OPA2703EA/250 is fully specified and guaranteed over the industrial temperature range of –40°C to +85°C. Absolute maximum ratings extend to –55°C to +125°C for short-term operation, but electrical parameters are only validated within the –40°C to +85°C range per the SBOS180A datasheet. This makes OPA2703EA/250 suitable for automotive cabin and industrial control environments where ambient temperatures remain within this band.
Does the OPA2703EA/250 support single-supply operation?
Yes, the OPA2703EA/250 supports single-supply operation from 4 V to 12 V, with rail-to-rail input and output swing enabling full utilization of the supply range. For example, with a 5 V single supply, inputs can range from –0.3 V to +5.3 V and outputs swing from 40 mV to 4.96 V (into 100 kΩ), making OPA2703EA/250 ideal for interfacing with 3.3 V or 5 V microcontrollers and ADCs without level-shifting circuitry.
What is the input bias current specification for the OPA2703EA/250?
The OPA2703EA/250 features an ultra-low input bias current of ±1 pA typical (±10 pA max) at 25°C, enabled by its CMOS input stage. This value remains stable across temperature and common-mode voltage, allowing use with high-impedance sources like piezoelectric sensors or pH electrodes without significant DC error. The OPA2703EA/250's 1 pA IB is confirmed in the SBOS180A Electrical Characteristics table under "Input Bias Current" with VS = ±5 V and VCM = 0 V.
Is the OPA2703EA/250 unity-gain stable?
Yes, the OPA2703EA/250 is explicitly unity-gain stable and optimized for closed-loop gains of 1 or greater. Unlike the OPA2704 family (which requires G ≥ 5 for stability), the OPA2703EA/250 maintains phase margin in buffer configurations and drives capacitive loads up to 1000 pF without oscillation. This stability is verified in the SBOS180A Typical Characteristics section, including small-signal step response plots at G = +1.
What package type does the OPA2703EA/250 use, and is it RoHS-compliant?
The OPA2703EA/250 uses the VSSOP-8 (DGK) package - a 3.0 mm × 3.0 mm, 0.65 mm pitch surface-mount outline with exposed thermal pad. It is RoHS-compliant (lead-free, NiPdAu finish), moisture sensitivity level 2 (260°C peak reflow, 1-year floor life), and rated for –40°C to +85°C operation. This information is documented in TI's PACKAGE OPTION ADDENDUM for orderable part number OPA2703EA/250.
OPA2703EA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.6V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 160 µV
- Current - Supply:
- 160µA (x2 Channels)
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2703EA/250 FAQ
1.How can I place an order for OPA2703EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2703EA/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 OPA2703EA/250 reliable?
The price and inventory of OPA2703EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2703EA/250 is usually 5 days.
3.What payment methods are accepted for OPA2703EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2703EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2703EA/250?
OPA2703EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2703EA/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 OPA2703EA/250?
For technical support, including OPA2703EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2703EA/250 requirements.
6.How does Aetrix verify that OPA2703EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA2703EA/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 OPA2703EA/250 meets industry standards.
7.What is the process for return or replacement of OPA2703EA/250?
All OPA2703EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2703EA/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 OPA2703EA/250 part is unused and in its original packaging.
Return procedure for OPA2703EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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