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Texas Instruments OPA2703EA/250G4
- Part No.:
- OPA2703EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2703EA/250G4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,030
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Product details
Overview
OPA2703EA/250G4 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 160 µA quiescent current per amplifier. It operates from ±2 V to ±6 V dual supplies (or 4 V–12 V single supply), delivers 40 mV output swing from rail into 100 kΩ, and features 160 µV max input offset voltage - ideal for precision sensor signal conditioning in portable data acquisition systems.
For engineers reviewing the OPA2703EA/250G4 datasheet, OPA2703EA/250G4 pinout, OPA2703EA/250G4 application, or OPA2703EA/250G4 equivalent, key selection criteria include its rail-to-rail I/O capability at ultra-low power, guaranteed performance over –40°C to +85°C, MSOP-8 package compatibility with space-constrained PCB layouts, and verified suitability for transducer amplification, active filtering, and buffered reference generation in low-power industrial and automotive subsystems.
Technical Context
The OPA2703EA/250G4 employs a complementary differential input stage enabling rail-to-rail common-mode input range extending 300 mV beyond both supply rails, and a class-AB output stage achieving 40 mV rail-to-rail swing under light load. Its unity-gain stability and 1 MHz GBW are maintained across the full specified supply range (±2 V to ±6 V) and temperature range (–40°C to +85°C).
Each amplifier channel exhibits 1 pA typical input bias current, 90 dB full-scale CMRR, and 120 dB open-loop gain (RL = 100 kΩ), supporting high-precision DC-coupled applications. The device avoids phase inversion when inputs exceed rails (with current limiting), and supports capacitive loads up to 1000 pF without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 1 MHz - enables stable unity-gain buffer and low-noise signal conditioning up to audio frequencies with minimal phase lag. |
| Slew Rate | 0.6 V/µs - supports clean 10 Vpp output at ≤10 kHz in G = 1 configuration without distortion. |
| Input Offset Voltage | ±160 µV max - ensures <1 LSB error in 16-bit DAC reference buffering (e.g., DAC7644) at 2.5 V full scale. |
| Quiescent Current | 160 µA per amplifier - allows dual-channel operation on coin-cell or energy-harvesting supplies without thermal derating. |
| Rail-to-Rail Output Swing | 40 mV from rail (RL = 100 kΩ) - preserves >99% dynamic range in 3.3 V or 5 V single-supply systems. |
| Common-Mode Rejection | 90 dB full-scale - rejects >30 kΩ unbalanced source impedance effects in bridge sensor interfaces. |
| Input Bias Current | 1 pA typical - eliminates significant voltage drop across >100 MΩ thermistor or photodiode feedback networks. |
Pinout & Package
OPA2703EA/250G4 is housed in an 8-pin MSOP (VSSOP, DGK) package - 3.0 mm × 3.0 mm footprint, 0.65 mm pitch, 1.1 mm height - optimized for high-density PCB layouts in portable instrumentation and automotive ECUs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply rail connection; accepts 4 V–12 V single or ±2 V–±6 V dual supply. |
| 2 | Out B | Inverting amplifier output channel B; drives loads down to 1 kΩ while maintaining rail-to-rail swing. |
| 3 | –In B | Inverting input of channel B; high-impedance node (5 TΩ || 4 pF) compatible with passive RC filters. |
| 4 | +In B | Non-inverting input of channel B; extends 300 mV beyond V– and V+ rails for true rail-to-rail sensing. |
| 5 | Out A | Inverting amplifier output channel A; electrically isolated from Out B; shares no internal coupling. |
| 6 | –In A | Inverting input of channel A; matched to –In B for dual-channel differential front-end designs. |
| 7 | +In A | Non-inverting input of channel A; identical CMVR and bias specs as +In B. |
| 8 | V– | Negative supply rail connection; referenced to ground in single-supply mode; must be decoupled with 1 µF + 1000 pF. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal capture and drive in 3.3 V or 5 V systems without level-shifting circuitry. |
| 160 µA per amplifier quiescent current | Supports always-on sensor monitoring in battery-powered devices with >1-year runtime on CR2032. |
| 1 pA input bias current | Eliminates offset drift in high-Z pH electrode or piezoelectric transducer amplifiers. |
| No phase inversion on overvoltage | Permits safe input clamping above rails using simple series resistors - critical for fault-tolerant automotive sensors. |
| Unity-gain stable | Allows direct use as voltage follower without external compensation, reducing BOM count and layout area. |
Applications
| Transducer Amplifier | Active Filter |
|---|---|
|
Use Scenario: Amplifying low-level mV-range signals from strain gauges, thermopiles, or piezoresistive pressure sensors in HVAC control modules. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end (channel A for sensor, channel B for reference buffer) with rail-to-rail I/O preserving SNR at low supply voltages. Use Value: 160 µV offset and 1 pA bias ensure <0.1% linearity error in 12-bit measurement systems without calibration. |
Use Scenario: Implementing 2nd-order Sallen-Key low-pass filters for anti-aliasing before SAR ADCs in portable multimeters. IC Role / Device Role / Timing Role: Unity-gain stable op amp providing precise pole placement with 1 MHz GBW and low noise density (45 nV/√Hz). Use Value: Enables filter cutoffs up to 100 kHz with <0.1 dB passband ripple and no stability risk from stray capacitance. |
| Data Acquisition Channel | Buffered Reference Generator |
|
Use Scenario: Driving multiplexed analog inputs of 16-bit ADCs (e.g., ADS8860) in industrial PLC analog input cards. IC Role / Device Role / Timing Role: Dual-channel driver isolating ADC sample-and-hold input from source impedance variations and crosstalk. Use Value: 40 mV rail-to-rail swing guarantees full 0–5 V input range utilization; 160 µA IQ minimizes self-heating-induced drift. |
Use Scenario: Generating precision ±2.5 V reference outputs for quad-voltage DACs (e.g., DAC7644) in automatic test equipment. IC Role / Device Role / Timing Role: Dual-supply buffered reference with matched channels delivering low-noise, low-drift references to multiple DAC sections. Use Value: 90 dB CMRR and 160 µV offset ensure <1 LSB error across all four DAC outputs under varying load conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture (0.02 µV/°C drift), 350 µA IQ, 350 kHz GBW - lower offset drift but slower and higher power. | Better for DC-critical applications (e.g., weigh scales) where long-term drift dominates; unsuitable for >100 kHz signal paths. | Select OPA2333AIDR only when offset drift <0.1 µV/°C is mandatory and bandwidth ≤350 kHz suffices. |
| MCP6022-E/SN | 200 µA IQ, 10 MHz GBW, 7 V/µs SR - faster but not unity-gain stable; requires ≥5 V/V gain for stability. | Applicable in high-speed G ≥ 5 configurations (e.g., active bandpass filters), but cannot replace OPA2703EA/250G4 in unity-gain buffers. | Choose MCP6022-E/SN only for closed-loop gains ≥5 where speed outweighs rail-to-rail I/O margin and ultra-low IQ. |
Compared with OPA2333AIDR and MCP6022-E/SN, the OPA2703EA/250G4 uniquely balances unity-gain stability, rail-to-rail I/O, sub-200 µA power, and 1 MHz bandwidth - making it irreplaceable in space- and power-constrained unity-gain sensor interfaces requiring guaranteed stability without external components.
Availability
OPA2703EA/250G4 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, and industrial data acquisition systems requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operation.
Supply support for OPA2703EA/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 specializing in analog and embedded processing technologies, with decades of expertise in precision op amps and signal chain solutions.
The OPA703/2703/4703 family was designed specifically for ultra-low-power, rail-to-rail precision amplification in battery-operated and space-constrained systems - emphasizing quiescent current efficiency without sacrificing DC accuracy or AC performance.
FAQ
What is the maximum capacitive load the OPA2703EA/250G4 can drive without oscillation?
The OPA2703EA/250G4 can drive up to 1000 pF of pure capacitive load while maintaining stability in unity-gain configuration. For loads exceeding 100 pF, adding a 10 Ω–20 Ω series resistor inside the feedback loop (between output and inverting input) suppresses ringing without affecting DC gain - a technique validated in TI's SBOS180A datasheet Figure 5. This capability makes OPA2703EA/250G4 suitable for driving ADC input capacitors and long PCB traces.
Does the OPA2703EA/250G4 support single-supply operation, and what is the minimum supply voltage?
Yes, the OPA2703EA/250G4 supports true single-supply operation from 4 V to 12 V, with full rail-to-rail input and output swing specified across this range. At 4 V supply, it maintains 160 µA quiescent current per amplifier, 160 µV max offset, and 40 mV output swing from rail into 100 kΩ - enabling reliable operation in 3.3 V system derivatives using LDO regulation. The absolute minimum operating voltage is 3.6 V, though specifications are only guaranteed from 4 V.
How does the OPA2703EA/250G4 handle input voltages exceeding the supply rails?
The OPA2703EA/250G4 features ESD diodes that conduct if inputs exceed V+ or fall below V– by >300 mV. As long as input current is limited to ≤10 mA (e.g., via a series resistor), the device operates safely without phase inversion or latch-up - a behavior confirmed in SBOS180A Figure 4. This tolerance allows direct interfacing with overvoltage-prone sensors (e.g., automotive crankshaft position sensors) without external protection diodes, simplifying front-end design.
Is the OPA2703EA/250G4 pin-compatible with other dual op amps in MSOP-8 packages?
No - the OPA2703EA/250G4 uses a non-standard pinout: pins 1 (V+), 2 (Out B), 3 (–In B), 4 (+In B), 5 (Out A), 6 (–In A), 7 (+In A), 8 (V–). This differs from industry-standard dual op amp pinouts (e.g., SO-8 pin 1 = Out A, pin 2 = –In A). Direct replacement requires PCB layout revision. Always verify pin mapping against the "OPA2703EA/250G4" section of SBOS180A before board design.
What thermal performance can be expected from the OPA2703EA/250G4 in an MSOP-8 package?
The OPA2703EA/250G4 in MSOP-8 (DGK) has a junction-to-ambient thermal resistance (θJA) of 150°C/W. At maximum rated quiescent current (200 µA per amplifier × 2 = 400 µA) and worst-case ambient (85°C), self-heating adds <0.06°C - negligible for precision applications. Derating is unnecessary below 100 mW total dissipation, which corresponds to >25 mA output current into shorted loads - well within the ±40 mA short-circuit rating.
OPA2703EA/250G4 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:
- Discontinued at Digi-Key
- 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/250G4 FAQ
1.How can I place an order for OPA2703EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2703EA/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 OPA2703EA/250G4 reliable?
The price and inventory of OPA2703EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2703EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA2703EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2703EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2703EA/250G4?
OPA2703EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2703EA/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 OPA2703EA/250G4?
For technical support, including OPA2703EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2703EA/250G4 requirements.
6.How does Aetrix verify that OPA2703EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA2703EA/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 OPA2703EA/250G4 meets industry standards.
7.What is the process for return or replacement of OPA2703EA/250G4?
All OPA2703EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2703EA/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 OPA2703EA/250G4 part is unused and in its original packaging.
Return procedure for OPA2703EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2703EA/250G4 Tags
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