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Texas Instruments OPA2703PA
- Part No.:
- OPA2703PA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OPA2703PA.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,503
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Product details
Overview
OPA2703PA from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for unity-gain stability, 1MHz gain-bandwidth product, 0.6V/µs slew rate, and ultra-low quiescent current (160µA per amplifier). It operates from ±2V to ±6V dual supplies or 4V–12V single supply and delivers 40mV rail-to-rail output swing into high-impedance loads - ideal for low-power sensor signal conditioning in portable instrumentation.
For engineers reviewing the OPA2703PA datasheet, OPA2703PA pinout, OPA2703PA application, or OPA2703PA equivalent, key selection criteria include its guaranteed rail-to-rail I/O performance across –40°C to +85°C, 90dB full-scale CMRR, 160µV max input offset voltage, and compatibility with DIP-8 through-hole prototyping and legacy industrial control boards.
Technical Context
The OPA2703PA uses a complementary differential input stage enabling rail-to-rail common-mode input range (extending 300mV beyond rails) and a Class AB output stage achieving 40mV output swing from supply rails under light load. Its unity-gain stable architecture ensures robust performance in buffer, active filter, and transducer amplifier configurations without external compensation.
Specified over ±2V to ±6V dual supply, it maintains 100dB open-loop gain (RL = 20kΩ), 1pA typical input bias current, and 45nV/√Hz input voltage noise density at 1kHz - supporting precision DC-coupled and medium-bandwidth AC applications up to 100kHz without significant distortion or drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 1MHz - supports stable unity-gain operation in signal buffers and active filters up to ~100kHz closed-loop bandwidth. |
| Slew Rate | 0.6V/µs - enables clean 10Vpp output at ≤10kHz without slewing-induced distortion in single-supply sensor interfaces. |
| Input Offset Voltage | ±160µV max - ensures ≤1.6mV error in 10V full-scale measurement systems, critical for 12-bit+ data acquisition front-ends. |
| Quiescent Current | 160µA per amplifier - allows dual-channel operation from coin-cell or energy-harvesting sources with <330µA total supply current. |
| CMRR | 90dB full-scale - rejects >30k:1 common-mode interference in noisy industrial environments (e.g., motor drive feedback). |
| Rail-to-Rail Output Swing | 40mV from rail (RL = 100kΩ) - preserves >99% dynamic range in 3.3V or 5V microcontroller ADC interfaces. |
| Input Bias Current | 1pA typical - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiode transimpedance stages). |
Pinout & Package
DIP-8 package with through-hole mounting; 0.300" wide body; compatible with standard PCB sockets and breadboard prototyping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives external load or next-stage input; rail-to-rail capable. |
| 2 | –In A | Inverting input of Amplifier A - accepts feedback network or signal inversion path. |
| 3 | +In A | Non-inverting input of Amplifier A - connects to reference, sensor, or high-impedance source. |
| 4 | V– | Negative supply pin - must be decoupled with 1µF tantalum + 1000pF ceramic capacitor. |
| 5 | +In B | Non-inverting input of Amplifier B - electrically isolated from Channel A; supports dual independent circuits. |
| 6 | –In B | Inverting input of Amplifier B - used for differential gain, summing, or inverting configuration. |
| 7 | Out B | Amplifier B output - fully independent channel; shares no internal nodes with Channel A. |
| 8 | V+ | Positive supply pin - accepts 4V–12V single or ±2V–±6V dual supply; requires local bypassing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of supply voltage in low-voltage systems (e.g., 3.3V MCU ADC reference buffers) without headroom loss. |
| 160µA per amplifier quiescent current | Supports always-on battery-powered devices with multi-year runtime (e.g., wireless sensor nodes with 10µA sleep current). |
| 1pA input bias current | Permits direct connection to megaohm-level sources (e.g., piezoelectric sensors, capacitive touch electrodes) without signal attenuation. |
| Unity-gain stable design | Eliminates need for external compensation components in voltage follower, active RC filter, and gain-of-one transducer interfaces. |
| –40°C to +85°C operating range | Qualified for industrial automation, automotive cabin electronics, and outdoor environmental monitoring equipment. |
Applications
| Portable Data Loggers | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity logger sampling thermistor and capacitive humidity sensors at 1Hz. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: Channel A buffers thermistor divider; Channel B amplifies humidity sensor output with rail-to-rail swing into 12-bit SAR ADC. Use Value: 160µA per channel enables >5-year battery life on CR2032; rail-to-rail I/O maximizes ADC dynamic range from 3.3V supply. |
Use Scenario: 4–20mA loop-powered pressure transmitter with local analog diagnostics. IC Role / Device Role / Timing Role: Dual op-amp implements precision I/V conversion (Channel A) and sensor offset calibration DAC buffer (Channel B). Use Value: 1pA input bias prevents error in high-Z current-sense resistor networks; 90dB CMRR rejects common-mode noise from 24V loop supply. |
| Automotive Cabin Audio Preamps | Medical ECG Front-End Buffers |
|
Use Scenario: Low-noise microphone preamplifier in vehicle infotainment system with 5V single supply. IC Role / Device Role / Timing Role: First-stage gain block (G = 10) for electret condenser mic; second channel buffers reference voltage for biasing. Use Value: 45nV/√Hz input voltage noise ensures SNR >70dB in 20Hz–20kHz audio band; rail-to-rail output drives ADC without clipping. |
Use Scenario: Patient-connected biopotential amplifier with isolated 3.3V supply and 12-bit microcontroller ADC. IC Role / Device Role / Timing Role: Right-leg drive (RLD) buffer and lead-off detection comparator input stage - both requiring ultra-low input current. Use Value: 1pA input bias avoids electrode polarization errors; 160µV max Vos ensures <0.1% gain error in 1mV ECG signal amplification. |
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 |
|---|---|---|---|
| OPA2333PA | Chopper-stabilized (0.02µV/°C drift), 350kHz GBW, 170µA IQ, same DIP-8 package | Better DC precision for long-term sensor drift compensation; lower bandwidth limits AC response | Select OPA2333PA when offset drift <0.1µV/°C is required over –40°C to +85°C; avoid for >200kHz signal paths. |
| LMV358N | General-purpose CMOS, 1MHz GBW, 120µA IQ, but only 65dB CMRR and 3mV Vos max, DIP-8 | Lower cost but insufficient for precision sensor interfaces requiring <1mV error or >70dB noise rejection | Choose LMV358N only for non-critical DC-coupled buffers where 3mV offset and 65dB CMRR are acceptable. |
Compared with OPA2703PA, OPA2333PA trades bandwidth for chopper-stabilized DC accuracy, while LMV358N sacrifices CMRR and offset performance for cost - making OPA2703PA the optimal balance of precision, speed, and power in DIP-8 dual op-amp form factor.
Availability
OPA2703PA is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and automotive cabin electronics requiring stable component supply with through-hole DIP-8 compatibility and extended temperature qualification.
Supply support for OPA2703PA 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 solutions, with decades of expertise in precision op-amp design and manufacturing reliability.
The OPA703/2703/4703 series was engineered specifically for low-power, rail-to-rail signal conditioning in space-constrained and battery-operated systems - emphasizing quiescent current efficiency without compromising DC accuracy or AC performance.
FAQ
What is the maximum supply voltage rating for the OPA2703PA?
The OPA2703PA has an absolute maximum supply voltage of 13.2V across V+ and V– pins. Its specified operating range is ±2V to ±6V dual supply or 4V to 12V single supply. Exceeding 13.2V risks permanent damage per TI's Absolute Maximum Ratings table in SBOS180A.
Does the OPA2703PA support rail-to-rail input beyond the supply rails?
Yes - the OPA2703PA input common-mode range extends 300mV beyond both supply rails (e.g., down to V– – 0.3V and up to V+ + 0.3V), enabled by its complementary N/P-channel input stage. This allows safe overvoltage tolerance when input signals briefly exceed rails, provided input current is limited to ≤10mA.
Can the OPA2703PA drive capacitive loads without oscillation?
Yes - the OPA2703PA is unity-gain stable and can drive up to 1000pF pure capacitive load. For loads >100pF in unity-gain buffer configurations, TI recommends adding a 10Ω–20Ω series resistor inside the feedback loop (between output and inverting input) to suppress ringing while preserving DC accuracy.
What is the thermal resistance (θJA) of the OPA2703PA in DIP-8 package?
The OPA2703PA in PDIP-8 package has a junction-to-ambient thermal resistance (θJA) of 100°C/W, as specified in the Thermal Resistance table of SBOS180A. This value assumes standard JEDEC 2-layer board conditions and enables thermal design for continuous operation up to +85°C ambient with ≤150°C junction temperature.
Is the OPA2703PA pin-compatible with other dual op-amps in DIP-8 format?
The OPA2703PA follows standard dual op-amp DIP-8 pinout (pin 1 = Out A, pin 2 = –In A, pin 3 = +In A, pin 4 = V–, pin 5 = +In B, pin 6 = –In B, pin 7 = Out B, pin 8 = V+), matching industry conventions including LM358, TL082, and OPA234. No PCB layout changes are needed when substituting within this pinout family.
OPA2703PA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OPA2703PA FAQ
1.How can I place an order for OPA2703PA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2703PA 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 OPA2703PA reliable?
The price and inventory of OPA2703PA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2703PA is usually 5 days.
3.What payment methods are accepted for OPA2703PA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2703PA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2703PA?
OPA2703PA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2703PA 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 OPA2703PA?
For technical support, including OPA2703PA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2703PA requirements.
6.How does Aetrix verify that OPA2703PA is sourced from the original manufacturer or authorized distributors?
All OPA2703PA 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 OPA2703PA meets industry standards.
7.What is the process for return or replacement of OPA2703PA?
All OPA2703PA units undergo pre-shipment inspection (PSI). If there is an issue with OPA2703PA, 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 OPA2703PA part is unused and in its original packaging.
Return procedure for OPA2703PA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2703PA Tags
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