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Texas Instruments OPA2704EA/250
- Part No.:
- OPA2704EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2704EA/250.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,030
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Product details
Overview
OPA2704EA/250 from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for gain ≥5 applications. It delivers 3MHz gain-bandwidth product, 3V/µs slew rate, ±160µV input offset voltage, 160µA quiescent current per amplifier, and operates from ±2V to ±6V dual supplies or 4V–12V single supply. It is used in precision sensor signal conditioning and high-speed data acquisition front-ends.
For engineers reviewing the OPA2704EA/250 datasheet, OPA2704EA/250 pinout, OPA2704EA/250 application, or OPA2704EA/250 equivalent, this page provides verified package mapping (MSOP-8), terminal functions, real-world application contexts, and validated alternative options for design-in and sourcing decisions.
Technical Context
The OPA2704EA/250 uses a complementary input stage enabling rail-to-rail common-mode input range extending 300mV beyond rails, and a class-AB output stage achieving 40mV rail-to-rail swing into 100kΩ. Its internal compensation is optimized for stable operation at non-inverting gains of 5 or greater.
It features ultra-low input bias current (±1pA typ), 90dB full-scale CMRR, and 120dB open-loop gain (RL = 100kΩ). The device is fully specified over –40°C to +85°C and supports capacitive load drive up to 1000pF when configured at G ≥ 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - enables stable closed-loop bandwidth of ~600kHz at G = 5, suitable for medium-speed ADC drivers |
| Slew Rate | 3V/µs - supports 10V step settling in <21µs at 0.01% for G = 5, critical for fast data acquisition |
| Input Offset Voltage | ±160µV max - ensures ≤0.001% gain error in 16-bit reference buffer applications |
| Quiescent Current | 160µA per amplifier - allows dual-channel precision amplification in battery-powered portable equipment |
| Rail-to-Rail I/O | Input extends (V–) – 0.3V to (V+) + 0.3V; output swings to within 40mV of rails - maximizes dynamic range in low-voltage systems |
| CMRR | 90dB full-scale - rejects common-mode noise in transducer interfaces with unshielded wiring |
| Input Bias Current | ±1pA typ - prevents significant voltage drop across high-impedance sensor sources (e.g., pH electrodes) |
Pinout & Package
OPA2704EA/250 is housed in an 8-pin MSOP (VSSOP, DGK) package with 0.65mm pitch, thermal pad exposed on bottom, and moisture sensitivity level (MSL) 2–260°C/1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V– | Negative supply rail connection; must be bypassed with 1µF tantalum + 1000pF ceramic |
| 2 | –In B | Inverting input of Channel B; high-impedance node sensitive to layout-induced leakage |
| 3 | +In B | Non-inverting input of Channel B; accepts signals up to (V–) – 0.3V and (V+) + 0.3V |
| 4 | Out B | Amplified output of Channel B; capable of ±10mA drive into resistive loads |
| 5 | Out A | Amplified output of Channel A; electrically isolated from Out B except via shared supply rails |
| 6 | –In A | Inverting input of Channel A; shares same ESD protection structure as Pin 2 |
| 7 | +In A | Non-inverting input of Channel A; complementary input pair enables rail-to-rail operation |
| 8 | V+ | Positive supply rail connection; requires identical bypassing as Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Gain-optimized stability | Internally compensated for unity-gain unstable but stable at G ≥ 5 - eliminates need for external compensation in gain-of-5+ circuits |
| Rail-to-rail input stage | Complementary N/P-channel differential pair extends common-mode range beyond rails by 300mV - preserves signal integrity in low-headroom sensor interfaces |
| Low-noise precision | 45nV/√Hz input voltage noise density at 1kHz - maintains SNR in 16-bit data acquisition front-ends |
| Ultra-low power precision | 160µA per amplifier at ±5V - enables dual-channel buffering in space-constrained portable instrumentation |
| High open-loop gain | 120dB AOL (RL = 100kΩ) - ensures <0.0025% gain error in precision reference buffers |
Applications
| Transducer Signal Conditioning | Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifying low-level mV-range outputs from strain gauges or thermocouples in industrial monitoring systems. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end, with one channel for signal gain and the other for reference buffering. Use Value: Rail-to-rail I/O preserves full sensor dynamic range under 5V single-supply operation; 1pA input bias avoids loading high-Z bridge sensors. |
Use Scenario: Driving SAR ADC inputs in portable test equipment requiring 16-bit accuracy and low power. IC Role / Device Role / Timing Role: Precision buffer and gain stage preceding ADC sampling; configured at G = 5 to leverage OPA2704EA/250's 3MHz GBW. Use Value: 3V/µs slew rate ensures <21µs 0.01% settling for 10V steps, matching typical 100ksps ADC aperture times. |
| Automotive Sensor Interface | Portable Medical Instrumentation |
|
Use Scenario: Signal conditioning for cabin air quality sensors (CO₂, VOC) in automotive infotainment modules. IC Role / Device Role / Timing Role: Dual op-amp performing active filtering and level-shifting before MCU ADC input. Use Value: Specified for –40°C to +85°C and low 160µA current enables reliable operation in thermally constrained dashboards without forced cooling. |
Use Scenario: Low-power ECG front-end amplification in handheld patient monitors. IC Role / Device Role / Timing Role: First-stage gain and DC-blocking integrator in biopotential signal chain. Use Value: 90dB CMRR rejects 50/60Hz mains interference; rail-to-rail output drives ADC directly from 3.3V supply, eliminating level-shifter ICs. |
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 | Chopper-stabilized (0.02µV/°C drift), lower GBW (350kHz), higher IQ (17µA per amp) | Better DC precision for ultra-low-drift applications; unsuitable for >100kHz signal paths | Select when long-term offset stability dominates speed requirements; not drop-in due to different pinout and chopper artifacts |
| MCP6022-I/SN | Unity-gain stable, 10MHz GBW, 7V/µs SR, higher IQ (250µA), no rail-to-rail input | Higher speed and drive capability; limited input range (V– + 0.3V to V+ – 1.2V) | Select when unity-gain stability and bandwidth >3MHz are required; verify input common-mode compatibility in existing designs |
Compared with OPA2704EA/250, OPA2333AIDR trades bandwidth and slew rate for nanovolt-level drift performance, while MCP6022-I/SN offers higher speed but sacrifices rail-to-rail input and increases quiescent current by 56% - making OPA2704EA/250 optimal for gain-of-5+ precision analog front-ends where supply headroom and power are constrained.
Availability
OPA2704EA/250 is available at Aetrix Electronics and suitable for automotive sensor interfaces, portable medical instrumentation, and industrial data acquisition systems requiring stable component supply, extended temperature support (–40°C to +85°C), and consistent MSOP-8 packaging.
Supply support for OPA2704EA/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 specializing in analog and embedded processing technologies, with decades of expertise in precision op amps and signal-chain solutions.
The OPA703/704 family-including OPA2704EA/250-is designed for low-power, rail-to-rail precision amplification in space- and energy-constrained systems such as portable instrumentation and automotive sensor nodes.
FAQ
What is the recommended operating supply range for OPA2704EA/250?
The OPA2704EA/250 is fully specified and guaranteed over dual supplies of ±2V to ±6V or single supply of 4V to 12V. Operation outside this range-such as below 4V or above 12V-may result in degraded performance or damage. Absolute maximum ratings allow up to 13.2V total supply voltage, but functional specifications apply only within the guaranteed range. Always use proper decoupling (1µF tantalum + 1000pF ceramic) on both V+ and V– pins of OPA2704EA/250.
Is OPA2704EA/250 unity-gain stable?
No, OPA2704EA/250 is not unity-gain stable. It is internally compensated for stable operation only at non-inverting closed-loop gains of 5 or greater. Attempting unity-gain or gain-of-2 configurations may cause oscillation or excessive overshoot. For unity-gain applications, TI recommends the pin-compatible OPA2703EA/250 instead. This distinction is fundamental to the OPA2704EA/250 design and must be respected in schematic capture and layout.
What is the maximum capacitive load OPA2704EA/250 can drive reliably?
OPA2704EA/250 can drive up to 1000pF of pure capacitive load when configured at G ≥ 5, as confirmed in the "Small Signal Overshoot vs Capacitive Load" typical curve. At lower gains, stability margin decreases significantly. For G = 5, adding a small series resistor (e.g., 10Ω) between the output and capacitive load further improves phase margin without affecting DC accuracy. This behavior is intrinsic to the OPA2704EA/250's gain-optimized compensation architecture.
Does OPA2704EA/250 support rail-to-rail input and output simultaneously?
Yes, OPA2704EA/250 supports true rail-to-rail input and output operation. Its input common-mode range extends from (V–) – 0.3V to (V+) + 0.3V, and its output swings to within 40mV of either rail into 100kΩ. This simultaneous RRO capability is enabled by a complementary input stage and class-AB output stage-both integral to the OPA2704EA/250 silicon design-and is fully characterized across –40°C to +85°C.
What is the thermal resistance (θJA) of the OPA2704EA/250 MSOP-8 package?
The junction-to-ambient thermal resistance (θJA) for OPA2704EA/250 in the MSOP-8 (DGK) package is 150°C/W, as specified in the Electrical Characteristics table. This value assumes standard JEDEC 2-layer board conditions. Actual thermal performance depends on PCB copper area, thermal vias, and airflow; for high-reliability applications, thermal simulation or measurement under end-equipment conditions is recommended for OPA2704EA/250.
OPA2704EA/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:
- 3V/µs
- Gain Bandwidth Product:
- 3 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2704EA/250 FAQ
1.How can I place an order for OPA2704EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2704EA/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 OPA2704EA/250 reliable?
The price and inventory of OPA2704EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2704EA/250 is usually 5 days.
3.What payment methods are accepted for OPA2704EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2704EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2704EA/250?
OPA2704EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2704EA/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 OPA2704EA/250?
For technical support, including OPA2704EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2704EA/250 requirements.
6.How does Aetrix verify that OPA2704EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA2704EA/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 OPA2704EA/250 meets industry standards.
7.What is the process for return or replacement of OPA2704EA/250?
All OPA2704EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2704EA/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 OPA2704EA/250 part is unused and in its original packaging.
Return procedure for OPA2704EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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