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Texas Instruments OPA4704EA/250G4
- Part No.:
- OPA4704EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4704EA/250G4.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,208
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Product details
Overview
OPA4704EA/250G4 from Texas Instruments is a quad, rail-to-rail input/output CMOS operational amplifier optimized for gain ≥5 applications. It delivers 3MHz gain-bandwidth product, 3V/µs slew rate, ±160µV max input offset voltage, 160µA quiescent current per amplifier, and operates from ±2V to ±6V dual supplies or 4V–12V single supply - ideal for precision signal conditioning in automotive sensor interfaces and portable data acquisition systems.
For engineers reviewing the OPA4704EA/250G4 datasheet, OPA4704EA/250G4 pinout, OPA4704EA/250G4 application, or OPA4704EA/250G4 equivalent, key selection criteria include its gain-stable architecture at G ≥ 5, TSSOP-14 package compatibility with space-constrained PCB layouts, rail-to-rail swing enabling full dynamic range at low supply voltages, and guaranteed performance over –40°C to +85°C industrial temperature range.
Technical Context
The OPA4704EA/250G4 employs 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 rail-to-rail output swing into 100kΩ. Its internal compensation is optimized for closed-loop gains of 5 or greater, ensuring stability without external compensation while delivering 3MHz bandwidth and 3V/µs slew rate.
Each of the four amplifiers features ultra-low input bias current (±1pA typ), 90dB full-scale CMRR, and 120dB open-loop gain. The device maintains specified performance across supply voltages from ±2V to ±6V and supports capacitive load drive up to 1000pF when operating at G ≥ 5 - critical for driving ADC input capacitance and active filter stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - enables stable operation with ≥5× closed-loop gain and sufficient phase margin for precision instrumentation circuits. |
| Slew Rate | 3V/µs - supports fast settling (18µs to 0.1%) for step signals in data acquisition front-ends. |
| Input Offset Voltage | ±160µV max - ensures <0.01% error in 16-bit DAC buffer or transducer amplifier applications. |
| Quiescent Current | 160µA per amplifier - allows quad-channel signal conditioning in battery-powered portable equipment. |
| Rail-to-Rail I/O | Input extends 300mV beyond rails; output swings within 40mV of rails into 100kΩ - maximizes usable dynamic range at 5V or lower supplies. |
| CMRR | 90dB full-scale - rejects common-mode noise in automotive sensor signal chains with high accuracy. |
| Supply Range | ±2V to ±6V dual or 4V–12V single - compatible with standard industrial and automotive power domains. |
Pinout & Package
TSSOP-14 surface-mount package (PW), 5.0mm × 4.4mm footprint, 0.65mm pitch, moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out D | Amplifier D output - drives high-impedance loads or ADC inputs with rail-to-rail swing. |
| 2 | –In D | Inverting input of Amplifier D - accepts differential or single-ended feedback configurations. |
| 3 | +In D | Non-inverting input of Amplifier D - connects to reference or sensor signal with 1pA bias current. |
| 4 | V– | Negative supply rail - shared by all four amplifiers; requires local 1µF + 1000pF bypassing. |
| 5 | +In C | Non-inverting input of Amplifier C - electrically isolated from other channels for multi-sensor buffering. |
| 6 | –In C | Inverting input of Amplifier C - supports unity-gain or gain ≥5 configurations per channel. |
| 7 | Out C | Amplifier C output - independently routable; no crosstalk with A/B/D sections (160dB channel separation at DC). |
| 8 | Out A | Amplifier A output - primary channel for system-critical signal paths requiring guaranteed 3MHz GBW. |
| 9 | –In A | Inverting input of Amplifier A - used in inverting amplifier or transimpedance configurations. |
| 10 | +In A | Non-inverting input of Amplifier A - low-offset node for precision reference buffering. |
| 11 | V+ | Positive supply rail - shared supply for all amplifiers; must be decoupled per TI layout guidelines. |
| 12 | +In B | Non-inverting input of Amplifier B - supports independent sensor channel with same specs as A/C/D. |
| 13 | –In B | Inverting input of Amplifier B - configurable for differential input or active filtering. |
| 14 | Out B | Amplifier B output - fully specified for G ≥ 5; not unity-gain stable without external compensation. |
Key Features
| Feature | Design Value |
|---|---|
| Gain-optimized stability | Internally compensated for stable operation only at closed-loop gains ≥5 - eliminates need for external compensation in high-gain sensor interfaces. |
| Rail-to-rail input stage | Complementary N/P-channel input pairs extend common-mode range 300mV beyond V+ and V− - preserves accuracy with wide-swing sensor outputs. |
| Ultra-low input bias current | 1pA typical - prevents signal degradation in high-impedance pH, thermocouple, or piezoelectric transducer amplifiers. |
| Low quiescent power | 160µA per amplifier - enables four-channel signal conditioning in <1mA total system budget for portable medical devices. |
| High channel separation | 160dB at DC - prevents crosstalk between independent analog channels in multi-channel data loggers. |
Applications
| Automotive Sensor Signal Conditioning | Portable Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifying low-level signals from MEMS accelerometers and pressure sensors in ADAS modules under 5V supply constraints. IC Role / Device Role / Timing Role: Quad-channel rail-to-rail op amp providing gain ≥5, anti-alias filtering, and ADC driver functionality with minimal board area. Use Value: 3MHz bandwidth and 3V/µs slew rate enable accurate capture of transient crash-event waveforms without distortion. |
Use Scenario: Buffering and scaling outputs from 16-bit SAR ADCs in handheld test equipment powered by Li-ion batteries. IC Role / Device Role / Timing Role: Precision gain-stage and reference buffer for multiple analog inputs, leveraging quad integration to reduce component count. Use Value: 160µA per amplifier allows four simultaneous channels while maintaining >10-hour battery life in portable DMMs. |
| Industrial Transducer Interface | Active Filter Bank for Audio Processing |
|
Use Scenario: Conditioning millivolt-level outputs from strain gauges and RTDs in factory-floor PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift, low-bias-current amplifier for Wheatstone bridge excitation and differential amplification. Use Value: ±160µV max offset and 90dB CMRR ensure <0.02% measurement error despite EMI-rich industrial environments. |
Use Scenario: Implementing cascaded 2nd-order low-pass and band-pass filters in battery-powered audio analyzers. IC Role / Device Role / Timing Role: Quad op amp configured as independent filter sections with G = 5, exploiting gain-optimized stability for clean frequency response. Use Value: 3MHz GBW supports filter cutoff frequencies up to 300kHz while maintaining phase linearity and low THD+N (0.025% at 1kHz). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4704UA | SO-14 package (5.0mm × 6.2mm), same electrical specs, tube packaging (50 pcs), higher thermal resistance (θJA = 100°C/W vs 100°C/W for TSSOP - identical value but different test conditions). | Preferred for prototyping or low-volume production where hand-soldering or socketing is required. | Select OPA4704UA when board assembly uses through-hole or manual reflow; OPA4704EA/250G4 is optimal for automated SMT lines targeting high-density layouts. |
| OPA4703EA/250G4 | Unity-gain stable version with 1MHz GBW and 0.6V/µs slew rate; otherwise identical pinout, package, and quiescent current. | Suitable for G = 1–4 applications (e.g., unity-gain buffers, integrators) where stability at low gain is mandatory. | Choose OPA4703EA/250G4 if circuit requires unity-gain configuration; OPA4704EA/250G4 is strictly for G ≥ 5 to leverage speed advantage. |
Compared with OPA4704UA, the OPA4704EA/250G4 offers identical performance in a smaller TSSOP-14 footprint for space-constrained designs, while OPA4703EA/250G4 provides a direct pin-compatible alternative when unity-gain stability is needed - neither is a drop-in replacement without verifying gain requirements and layout constraints.
Availability
OPA4704EA/250G4 is available at Aetrix Electronics and suitable for automotive sensor interfaces, portable data acquisition systems, and industrial transducer signal conditioning requiring stable component supply, RoHS-compliant sourcing, and guaranteed long-term availability.
Supply support for OPA4704EA/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 family was designed specifically for low-power, rail-to-rail precision amplification in space- and power-constrained applications - balancing speed, accuracy, and quiescent current for automotive, industrial, and portable equipment.
FAQ
Is OPA4704EA/250G4 unity-gain stable?
No, the OPA4704EA/250G4 is not unity-gain stable. It is internally compensated for stable operation only at closed-loop gains of 5 or greater. Attempting to use OPA4704EA/250G4 in unity-gain or G < 5 configurations may result in oscillation or excessive overshoot. For unity-gain applications, select the pin-compatible OPA4703EA/250G4 instead.
What is the maximum capacitive load OPA4704EA/250G4 can drive reliably?
The OPA4704EA/250G4 can drive up to 1000pF of pure capacitive load when operating at G ≥ 5, as confirmed in the "Small Signal Overshoot vs Capacitive Load" typical curve. At lower gains, stability degrades; for G = 5, the device maintains <10% overshoot even with 1000pF. Always verify layout parasitics and add series resistance in the feedback path if ringing occurs.
Does OPA4704EA/250G4 support rail-to-rail input beyond the supply rails?
Yes - the OPA4704EA/250G4 input common-mode voltage range extends 300mV beyond both V+ and V− rails at room temperature, enabled by its complementary N/P-channel input stage. However, input currents exceeding 10mA when driven beyond rails may damage the ESD diodes; always limit input current with series resistors if overvoltage is possible.
What is the thermal resistance (θJA) of the OPA4704EA/250G4 package?
The OPA4704EA/250G4 uses a TSSOP-14 (PW) package with a thermal resistance θJA of 100°C/W, measured under JEDEC JESD51-7 standard conditions (single-layer 1-in² copper pad). This value assumes proper PCB layout with thermal vias and adequate copper pour; actual board-level θJA will vary based on layout and airflow.
Can OPA4704EA/250G4 operate from a single 3.3V supply?
No - the OPA4704EA/250G4 has a minimum specified single-supply voltage of 4V. While it may function at 3.3V in some cases, parameters including output swing, CMRR, and GBW are not guaranteed below 4V. For 3.3V systems, consider TI's OPA333 or OPA376 families, which are explicitly characterized down to 1.8V.
OPA4704EA/250G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-TSSOP
OPA4704EA/250G4 FAQ
1.How can I place an order for OPA4704EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4704EA/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 OPA4704EA/250G4 reliable?
The price and inventory of OPA4704EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4704EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA4704EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4704EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4704EA/250G4?
OPA4704EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4704EA/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 OPA4704EA/250G4?
For technical support, including OPA4704EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4704EA/250G4 requirements.
6.How does Aetrix verify that OPA4704EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA4704EA/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 OPA4704EA/250G4 meets industry standards.
7.What is the process for return or replacement of OPA4704EA/250G4?
All OPA4704EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4704EA/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 OPA4704EA/250G4 part is unused and in its original packaging.
Return procedure for OPA4704EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4704EA/250G4 Tags
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