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Texas Instruments OPA704NA/250G4
- Part No.:
- OPA704NA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA704NA/250G4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,224
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Product details
Overview
OPA704NA/250G4 from Texas Instruments is a single-channel, rail-to-rail input/output CMOS operational amplifier optimized for non-inverting gains ≥5. It delivers 3MHz gain-bandwidth product, 3V/µs slew rate, 160µA quiescent current, ±160µV input offset voltage, and operates from ±2V to ±6V (or 4V–12V single supply). It is used in precision transducer amplification and active filter stages where speed and low power coexist.
For engineers reviewing the OPA704NA/250G4 datasheet, OPA704NA/250G4 pinout, OPA704NA/250G4 application, or OPA704NA/250G4 equivalent, this page provides verified package mapping (SOT23-5), confirmed rail-to-rail I/O behavior, gain-stability boundary (G ≥ 5), thermal resistance (200°C/W), and validated alternatives for signal-chain design continuity.
Technical Context
The OPA704NA/250G4 employs a complementary input stage enabling rail-to-rail common-mode input range extending 300mV beyond rails, and a class-AB output stage delivering 40mV rail-to-rail swing into 100kΩ. Its internal compensation is tailored for stable operation only at closed-loop gains of 5 or higher.
Unlike the unity-gain-stable OPA703 family, the OPA704 series sacrifices low-gain stability to achieve triple the bandwidth and fivefold higher slew rate - making it suitable for medium-speed data acquisition front-ends and buffered DAC reference drivers requiring fast settling at fixed gain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - supports stable closed-loop operation at G ≥ 5 with usable small-signal bandwidth up to ~600kHz at G = 5. |
| Slew Rate | 3V/µs - enables full-scale 5V step response in ≤2µs, critical for driving SAR ADC input capacitors without distortion. |
| Input Offset Voltage | ±160µV (max) - ensures <0.01% gain error in 10V-range sensor interfaces without trimming. |
| Quiescent Current | 160µA per amplifier - allows battery-powered portable instrumentation with multi-day runtime. |
| Rail-to-Rail I/O | Input extends (V−) − 0.3V to (V+) + 0.3V; output swings to within 40mV of rails at light load - preserves dynamic range in 3.3V or 5V systems. |
| CMRR | 90dB (full scale) - rejects common-mode noise from noisy digital supplies in mixed-signal PCB layouts. |
| Input Bias Current | 1pA (typ) - permits high-impedance pH or photodiode sensor interfacing without significant DC error. |
Pinout & Package
SOT23-5 surface-mount package (5-pin, 0.95mm pitch, 2.9mm × 1.6mm footprint), moisture sensitivity level (MSL) 2, rated for −40°C to +85°C operation. Thermal resistance θJA = 200°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V− | Negative supply terminal - must be bypassed with 1µF tantalum + 1000pF ceramic for stability. |
| 2 | In− | Inverting input - high-impedance node; sensitive to layout-induced coupling in high-gain configurations. |
| 3 | Out | Amplifier output - capable of sourcing/sinking ±10mA; drives 1kΩ loads to rail with <150mV drop. |
| 4 | In+ | Non-inverting input - referenced to system ground or bias network; rail-to-rail common-mode range enables direct sensor connection. |
| 5 | V+ | Positive supply terminal - accepts 4V–12V single or ±2V–±6V dual supply; quiescent current independent of V+ over range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Maintains >99% of supply-referenced dynamic range in 3.3V/5V systems, eliminating level-shifting circuitry. |
| Optimized for G ≥ 5 | Enables 3× higher bandwidth than OPA703 at same gain, with guaranteed phase margin >45° in non-inverting configurations. |
| 1pA input bias current | Supports direct interface to high-Z sources (e.g., piezoelectric sensors, pH electrodes) without guard traces or bias compensation. |
| 160µA quiescent current | Permits integration into always-on sensor nodes with sub-10µA average system sleep current when gated. |
| 300mV beyond-rail input range | Accepts transient overvoltage inputs (e.g., ESD-coupled spikes) without phase inversion if current-limited to 10mA. |
Applications
| Transducer Amplification | Active Filter Stage |
|---|---|
Use Scenario: Amplifying low-level output from strain-gauge bridges or thermopile sensors in automotive cabin air quality modules. IC Role / Device Role / Timing Role: Precision non-inverting amplifier (G = 5–10) with rail-to-rail output driving 12-bit SAR ADC input. Use Value: 3V/µs slew rate settles 5V steps in <2.1µs (0.01%), minimizing conversion dead time; 160µA IQ extends battery life in wireless sensor nodes. |
Use Scenario: 2nd-order Sallen-Key low-pass filter (fc = 100kHz) in portable medical ECG front-end. IC Role / Device Role / Timing Role: Gain block and buffer with unity-gain-stable OPA703 replaced by faster OPA704 at fixed G = 5 for improved group delay flatness. Use Value: 3MHz GBW ensures <0.1dB passband ripple to 80kHz; rail-to-rail I/O preserves SNR across full 3.3V ADC input range. |
| Data Acquisition Front-End | Buffered DAC Reference |
Use Scenario: Driving multiplexed 16-bit ADC inputs in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Track-and-hold buffer with fast settling (18µs to 0.01% at G = 5) and low THD+N (0.025%) at 1kHz. Use Value: Eliminates acquisition errors from charge injection; 1pA IB prevents drift in high-impedance multiplexer paths. |
Use Scenario: Buffering precision voltage references for quad DACs (e.g., DAC7644) in automated test equipment. IC Role / Device Role / Timing Role: Dual-supply (±2.5V) reference follower providing low-noise, low-drift output to DAC VREF pins. Use Value: ±160µV VOS contributes <0.0025% FSR error in 16-bit system; rail-to-rail output ensures full DAC code utilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA704NA/250 | Identical electrical specs and SOT23-5 package; differs only in tape-and-reel carrier packaging (no G4 suffix). | No functional difference; both rated for −40°C to +85°C, same MSL-2, same A04 marking. | Select OPA704NA/250G4 when traceability to TI's G4-standardized reel labeling is required for automated assembly verification. |
| OPA2704EA/250 | Dual-channel version in MSOP-8; shares same 3MHz GBW, 3V/µs SR, and G ≥ 5 stability requirement per channel. | Reduces board area vs two discrete OPA704s; requires dual-amplifier signal routing but saves 2x SOT23 footprints. | Choose OPA2704EA/250 when space-constrained designs need two matched, high-speed gain ≥5 amplifiers on one die. |
Compared with OPA704NA/250G4, the OPA704NA/250 offers identical performance with standard reel labeling, while the OPA2704EA/250 delivers dual-channel integration at the cost of larger MSOP-8 footprint and shared substrate noise coupling.
Availability
OPA704NA/250G4 is available at Aetrix Electronics and suitable for transducer amplification, active filter design, data acquisition front-ends, buffered DAC reference generation, and portable instrumentation requiring stable component supply across extended temperature ranges.
Supply support for OPA704NA/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/OPA704 series was designed for low-power, rail-to-rail precision amplification in space- and energy-constrained systems - targeting automotive sensor interfaces, portable medical devices, and industrial data acquisition where speed, accuracy, and efficiency intersect.
FAQ
Is OPA704NA/250G4 unity-gain stable?
No, OPA704NA/250G4 is not unity-gain stable. It is internally compensated for stable operation only at closed-loop gains of 5 or greater. Using OPA704NA/250G4 in unity-gain or G < 5 configurations risks oscillation or excessive overshoot. For G = 1 applications, the pin-compatible OPA703NA/250G4 is the correct selection.
What is the maximum capacitive load OPA704NA/250G4 can drive reliably?
OPA704NA/250G4 can drive up to 1000pF of pure capacitive load when configured at G ≥ 5. At G = 5, typical small-signal overshoot remains <10% up to 1nF (per "Small-Signal Overshoot vs Capacitive Load" curve). For heavier loads or lower gains, external compensation (e.g., feedback capacitor or series resistor) is required to maintain stability.
Does OPA704NA/250G4 support single-supply operation?
Yes, OPA704NA/250G4 supports single-supply operation from 4V to 12V. Its rail-to-rail input extends 300mV beyond V− and V+, and its output swings to within 40mV of both rails under light load - enabling full-scale signal handling in 3.3V and 5V systems when biased appropriately.
What does the "G4" suffix in OPA704NA/250G4 signify?
The "G4" suffix in OPA704NA/250G4 denotes TI's standardized tape-and-reel packaging specification, indicating compliance with TI's G4 reel labeling, orientation, and traceability requirements for automated SMT placement. Electrically and functionally, OPA704NA/250G4 is identical to OPA704NA/250.
Can OPA704NA/250G4 replace OPA703NA/250G4 in an existing design?
OPA704NA/250G4 cannot directly replace OPA703NA/250G4 unless the circuit operates at G ≥ 5. The OPA704NA/250G4 lacks unity-gain stability and exhibits different frequency compensation. Swapping without verifying gain configuration, phase margin, and settling behavior may cause instability or degraded transient response in the OPA704NA/250G4.
OPA704NA/250G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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
- 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:
- SOT-23-5
OPA704NA/250G4 FAQ
1.How can I place an order for OPA704NA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA704NA/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 OPA704NA/250G4 reliable?
The price and inventory of OPA704NA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA704NA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA704NA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA704NA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA704NA/250G4?
OPA704NA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA704NA/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 OPA704NA/250G4?
For technical support, including OPA704NA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA704NA/250G4 requirements.
6.How does Aetrix verify that OPA704NA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA704NA/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 OPA704NA/250G4 meets industry standards.
7.What is the process for return or replacement of OPA704NA/250G4?
All OPA704NA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA704NA/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 OPA704NA/250G4 part is unused and in its original packaging.
Return procedure for OPA704NA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA704NA/250G4 Tags
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