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Texas Instruments OPA2703EA/2K5G4
- Part No.:
- OPA2703EA/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2703EA/2K5G4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,686
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Product details
Overview
OPA2703EA/2K5G4 from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for unity-gain stability, 1 MHz gain-bandwidth product, 0.6 V/µs slew rate, and ultra-low quiescent current (160 µA per amplifier). It operates from ±2 V to ±6 V dual supplies or 4 V to 12 V single supply, and is specified over –40°C to +85°C - ideal for low-power sensor signal conditioning in automotive and portable instrumentation.
For engineers reviewing the OPA2703EA/2K5G4 datasheet, OPA2703EA/2K5G4 pinout, OPA2703EA/2K5G4 application, or OPA2703EA/2K5G4 equivalent, key selection criteria include rail-to-rail I/O swing (within 40 mV of rails at light load), 90 dB full-scale CMRR, 160 µV max input offset voltage, 1 pA input bias current, and MSOP-8 package compatibility with space-constrained analog front-ends.
Technical Context
The OPA2703EA/2K5G4 implements a complementary differential input stage enabling rail-to-rail common-mode input range extending 300 mV beyond both supply rails, with no phase inversion under overvoltage conditions when input current is limited. Its class AB output stage delivers rail-to-rail output swing down to 40 mV from V+ or V– under 100 kΩ load while maintaining >80 dB open-loop gain.
This dual op amp is unity-gain stable and fully characterized for operation across its entire specified supply range (±2 V to ±6 V) and temperature range (–40°C to +85°C). It features low 1 pA input bias current and 45 nV/√Hz input voltage noise density at 1 kHz - critical for high-impedance transducer interfacing and precision DC-coupled amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 1 MHz - supports stable unity-gain buffer and low-gain signal conditioning up to ~100 kHz without peaking. |
| Slew Rate | 0.6 V/µs - enables clean 100 kHz sine wave output at 6 Vpp with minimal distortion in G = 1 configuration. |
| Input Offset Voltage | ±160 µV (max) - ensures ≤0.1% gain error in 1 V full-scale 16-bit data acquisition systems. |
| CMRR | 90 dB (full-scale) - rejects >30 kΩ unbalanced source impedance effects in single-ended sensor interfaces. |
| Quiescent Current | 160 µA per amplifier - allows dual-channel operation from coin-cell or energy-harvesting sources. |
| Rail-to-Rail Output Swing | Within 40 mV of V+ or V– (RL = 100 kΩ) - preserves >99% dynamic range in 3.3 V or 5 V systems. |
| Input Bias Current | ±1 pA (max) - prevents >1 mV error across 1 GΩ feedback resistors in high-precision integrators. |
Pinout & Package
OPA2703EA/2K5G4 is housed in an 8-pin MSOP (VSSOP-8, 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 and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V− (Amp A) | Negative supply pin for amplifier A; must be decoupled with 1000 pF ceramic + 1 µF tantalum. |
| 2 | Out A | Amplifier A output; capable of sourcing/sinking ±10 mA into resistive loads. |
| 3 | −In A | Inverting input for amplifier A; high-impedance node (5 TΩ || 4 pF) sensitive to layout parasitics. |
| 4 | +In A | Non-inverting input for amplifier A; accepts common-mode voltages from (V−) − 0.3 V to (V+) + 0.3 V. |
| 5 | +In B | Non-inverting input for amplifier B; electrically isolated from Amp A; shares same input stage architecture. |
| 6 | −In B | Inverting input for amplifier B; matched to Amp A for dual-channel common-mode rejection. |
| 7 | Out B | Amplifier B output; independent drive capability; channel separation >100 dB at DC. |
| 8 | V+ | Positive supply pin shared by both amplifiers; requires local bypassing adjacent to pin 8. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in low-voltage (3.3 V/5 V) systems without level-shifting circuitry. |
| 160 µA per amplifier quiescent current | Supports always-on sensor monitoring in battery-powered devices with multi-year runtime. |
| 1 pA max input bias current | Permits use of ultra-high-value feedback networks (>10 MΩ) without significant offset drift. |
| 90 dB full-scale CMRR | Maintains accuracy in noisy automotive environments where common-mode transients exceed 1 V. |
| Unity-gain stable | Eliminates need for external compensation in buffer, active filter, and reference-buffer applications. |
| −40°C to +85°C operating range | Qualified for under-hood automotive and industrial control module deployment without derating. |
Applications
| Automotive Cabin Sensor Interface | Portable Medical Front-End |
|---|---|
|
Use Scenario: Amplifying low-level thermistor and humidity sensor outputs in HVAC control modules exposed to engine bay thermal cycling. IC Role / Device Role / Timing Role: Dual-channel rail-to-rail op amp providing buffered, offset-compensated analog signals to 12-bit SAR ADC inputs. Use Value: 160 µA per amplifier current draw extends battery backup life; 40 mV output swing headroom ensures full-scale digitization at 3.3 V supply. |
Use Scenario: Conditioning ECG electrode signals in handheld patient monitors with strict power budget constraints. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer and high-pass filter driver with ultra-low input current. Use Value: 1 pA input bias current prevents electrode polarization errors; 90 dB CMRR rejects 50/60 Hz mains interference without guard traces. |
| Industrial Data Acquisition Channel | Low-Power Reference Buffer |
|
Use Scenario: Driving multiplexed 16-bit ADC inputs in modular PLC analog input cards requiring channel-to-channel isolation. IC Role / Device Role / Timing Role: Dual op amp configured as unity-gain buffers for precision voltage references and sensor outputs. Use Value: Matched amplifier pair ensures <1 µV inter-channel offset; 1 MHz GBW supports 100 kSPS sampling with <0.1% settling error. |
Use Scenario: Buffering internal bandgap references in low-power microcontrollers and DACs to prevent loading-induced drift. IC Role / Device Role / Timing Role: Non-inverting unity-gain follower isolating reference from variable digital switching currents. Use Value: Rail-to-rail output swing maintains reference accuracy down to 1.8 V supply; 160 µA IQ minimizes system standby power. |
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 | Zero-drift architecture; 0.02 µV/°C offset drift vs. OPA2703EA/2K5G4's ±4 µV/°C; higher 350 µA IQ. | Better long-term DC stability in precision weigh scales; less suitable for battery-critical designs. | Select OPA2333AIDR when sub-µV offset drift dominates over quiescent power; avoid if <200 µA per channel is mandatory. |
| MCP6022-I/SN | Lower 175 kHz GBW; 100 µA IQ; only 70 dB CMRR; not specified beyond +70°C. | Cost-optimized for consumer-grade temperature ranges; insufficient for automotive under-hood use. | Choose MCP6022-I/SN for non-automotive, non-industrial cost-sensitive designs where 1 MHz bandwidth is unnecessary. |
Compared with OPA2333AIDR and MCP6022-I/SN, the OPA2703EA/2K5G4 uniquely balances 1 MHz bandwidth, 160 µA IQ, 90 dB CMRR, and −40°C to +85°C qualification - making it the optimal dual op amp for automotive sensor interfaces and portable precision analog systems where power, speed, and ruggedness intersect.
Availability
OPA2703EA/2K5G4 is available at Aetrix Electronics and suitable for automotive cabin electronics, portable medical instrumentation, and industrial data acquisition systems requiring stable component supply, guaranteed RoHS compliance, and full production lifecycle support.
Supply support for OPA2703EA/2K5G4 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 high-reliability op amp design for automotive, industrial, and medical markets.
The OPA703/2703/4703 family was engineered specifically for low-power, rail-to-rail signal conditioning in space- and energy-constrained systems - emphasizing precision, stability, and robustness across extended temperature ranges.
FAQ
What is the maximum capacitive load the OPA2703EA/2K5G4 can drive stably?
The OPA2703EA/2K5G4 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 to 20 Ω series resistor inside the feedback loop (between output and inverting input) reduces ringing without affecting DC accuracy. This behavior is confirmed in the "Small Signal Overshoot vs Capacitive Load" curve on page 8 of the SBOS180A datasheet.
Does the OPA2703EA/2K5G4 support single-supply operation?
Yes, the OPA2703EA/2K5G4 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. Input common-mode voltage extends 300 mV beyond both rails, and output swings to within 40 mV of V+ or V− under light loads - making it well-suited for 3.3 V and 5 V systems where ground-referenced signals dominate.
What is the thermal resistance (θJA) of the OPA2703EA/2K5G4 in its MSOP-8 package?
The OPA2703EA/2K5G4 in the MSOP-8 (DGK) package has a junction-to-ambient thermal resistance (θJA) of 150 °C/W, as specified in the Thermal Resistance table on page 4 of the SBOS180A datasheet. This value assumes standard JEDEC 2-layer board conditions; actual board layout and copper area will affect real-world thermal performance.
Is the OPA2703EA/2K5G4 pin-compatible with other dual op amps in SO-8 packages?
No - the OPA2703EA/2K5G4 uses the MSOP-8 (DGK) pinout, which differs from standard SO-8 (D) packages. While the functional pin assignments (V+, V−, In+, In−, Out) match the industry-standard dual op amp layout, the physical dimensions, pitch (0.65 mm vs. 1.27 mm), and thermal pad presence make it incompatible with SO-8 footprints. The SO-8 variant is the OPA2703UA/2K5G4, not the EA suffix part.
What is the typical input voltage noise density of the OPA2703EA/2K5G4 at 1 kHz?
The typical input voltage noise density of the OPA2703EA/2K5G4 at 1 kHz is 45 nV/√Hz, as measured under VS = ±5 V, TA = +25°C, and RL = 20 kΩ conditions (page 3 of SBOS180A). This low noise floor supports high-fidelity amplification of microvolt-level sensor signals without requiring additional filtering stages.
OPA2703EA/2K5G4 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/2K5G4 FAQ
1.How can I place an order for OPA2703EA/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2703EA/2K5G4 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/2K5G4 reliable?
The price and inventory of OPA2703EA/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2703EA/2K5G4 is usually 5 days.
3.What payment methods are accepted for OPA2703EA/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2703EA/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2703EA/2K5G4?
OPA2703EA/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2703EA/2K5G4 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/2K5G4?
For technical support, including OPA2703EA/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2703EA/2K5G4 requirements.
6.How does Aetrix verify that OPA2703EA/2K5G4 is sourced from the original manufacturer or authorized distributors?
All OPA2703EA/2K5G4 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/2K5G4 meets industry standards.
7.What is the process for return or replacement of OPA2703EA/2K5G4?
All OPA2703EA/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2703EA/2K5G4, 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/2K5G4 part is unused and in its original packaging.
Return procedure for OPA2703EA/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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