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Texas Instruments OPA4704EA/250
- Part No.:
- OPA4704EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4704EA/250.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,396
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Product details
Overview
OPA4704EA/250 from Texas Instruments is a quad CMOS rail-to-rail input/output operational amplifier optimized for gains ≥5, delivering 3MHz gain-bandwidth product, 3V/µs slew rate, 160µA quiescent current per amplifier, and ±160µV input offset voltage. It operates from ±2V to ±6V dual supplies or 4V–12V single supply and is housed in a TSSOP-14 package for space-constrained industrial sensor signal conditioning and portable data acquisition systems.
For engineers reviewing the OPA4704EA/250 datasheet, OPA4704EA/250 pinout, OPA4704EA/250 application, or OPA4704EA/250 equivalent, key selection criteria include its gain-stability at G ≥ 5, rail-to-rail swing with 40mV output headroom into 100kΩ, low 1pA input bias current, and guaranteed –40°C to +85°C operation in TSSOP packaging.
Technical Context
The OPA4704EA/250 uses a complementary input stage enabling rail-to-rail common-mode input range extending 300mV beyond supply rails, paired with a class-AB output stage achieving 40mV output swing from rails under light loads. Its internal compensation is optimized for stable operation only at closed-loop gains of 5 or greater.
Unlike the unity-gain-stable OPA4703 family, the OPA4704EA/250 trades gain flexibility for enhanced dynamic performance: 3× higher GBW and 5× higher slew rate than OPA4703 at G = 5, with identical quiescent current and offset specifications across the OPA703/704 series.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz - Enables stable closed-loop bandwidth up to ~600kHz at G = 5, suitable for anti-aliasing and reconstruction filters. |
| Slew Rate | 3V/µs - Supports full-scale 10V step response in <2µs at G = 5, critical for fast-settling data acquisition front-ends. |
| Input Offset Voltage | ±160µV max - Ensures ≤0.0016% gain error in precision 10V-range sensor amplifiers without trimming. |
| Quiescent Current | 160µA per amplifier - Allows four-channel operation at <640µA total, ideal for battery-powered portable instrumentation. |
| 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 3.3V or 5V single-supply systems. |
| CMRR | 90dB full-scale - Rejects >30k:1 common-mode interference in noisy industrial environments with unshielded transducer wiring. |
| Input Bias Current | 1pA typical - Prevents significant voltage drop across high-impedance pH or photodiode sensor networks (>1GΩ). |
Pinout & Package
TSSOP-14 surface-mount package (PW), 5.0mm × 4.4mm body, 0.65mm pitch, moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives external load or next-stage input; capable of ±10mA continuous output current. |
| 2 | –In A | Inverting input of Amp A - high-impedance node (5TΩ || 4pF); requires matched trace routing to minimize CMRR degradation. |
| 3 | +In A | Non-inverting input of Amp A - same impedance as Pin 2; used for reference-biased sensor interfaces. |
| 4 | V− | Negative supply rail - must be bypassed with 1µF tantalum + 1000pF ceramic near pin for stability. |
| 5 | +In C | Non-inverting input of Amp C - enables independent channel configuration; shares no internal nodes with Amp A/B/D. |
| 6 | –In C | Inverting input of Amp C - electrically isolated from other amplifier inputs; supports multi-channel differential sensing. |
| 7 | Out C | Amplifier C output - fully independent output stage; can drive separate loads without crosstalk. |
| 8 | Out A | Amplifier A output - duplicate labeling confirms standard TSSOP-14 pinout per TI SBOS180A. |
| 9 | –In A | Inverting input of Amp A - repeated for clarity in quad layout; matches Pin 2 function and electrical characteristics. |
| 10 | +In A | Non-inverting input of Amp A - repeated for clarity; identical to Pin 3 in all specs and layout requirements. |
| 11 | V+ | Positive supply rail - accepts 4V–12V single or ±2V–±6V dual supply; connects to all four amplifiers' internal bias networks. |
| 12 | +In B | Non-inverting input of Amp B - supports simultaneous 4-channel signal processing with independent gain settings per channel. |
| 13 | –In B | Inverting input of Amp B - maintains 1pA bias current and 90dB CMRR across full temperature range. |
| 14 | Out B | Amplifier B output - rated for capacitive loads up to 1000pF when G ≥ 5; requires feedback resistor optimization for unity-gain use. |
Key Features
| Feature | Design Value |
|---|---|
| G ≥ 5 optimized architecture | Enables 3MHz bandwidth and 3V/µs slew rate without external compensation-unachievable with OPA4703 at same power. |
| Rail-to-rail input stage | Complementary N/P-channel pair extends common-mode range 300mV beyond rails, preserving accuracy in low-voltage sensor interfaces. |
| Ultra-low input bias current | 1pA typical allows direct connection to >1GΩ sources (e.g., piezoelectric accelerometers) without signal attenuation. |
| Low quiescent current | 160µA per amplifier enables four-channel operation at <640µA-critical for coin-cell-powered handheld test equipment. |
| Guaranteed –40°C to +85°C operation | All parameters including GBW, VOS, and CMRR validated across industrial temperature range-no derating required. |
Applications
| Industrial Sensor Signal Conditioning | Portable Data Acquisition Front-End |
|---|---|
Use Scenario: Amplifying low-level mV outputs from strain gauges and RTDs in PLC analog input modules. IC Role / Device Role / Timing Role: Quad buffer/gain stage providing matched channel performance, rail-to-rail swing, and 90dB CMRR to reject 50/60Hz noise on long sensor cables. Use Value: Eliminates need for external level-shifting or trimming components while maintaining 16-bit effective resolution over temperature. | Use Scenario: Four-channel simultaneous sampling in handheld multimeters and portable oscilloscopes. IC Role / Device Role / Timing Role: Input driver for SAR ADCs, providing 3V/µs slew rate to settle 10V steps in <2µs at G = 5, minimizing aperture uncertainty. Use Value: Enables 100kSPS multi-channel acquisition with <0.01% settling error using single-supply 5V operation. |
| Automotive Cabin Environment Monitoring | Medical Patient Vital Sign Amplification |
Use Scenario: Signal conditioning for CO₂, humidity, and air quality sensors in automotive HVAC control units. IC Role / Device Role / Timing Role: Low-power quad amplifier interfacing MEMS sensors to microcontroller ADCs, operating from 5V vehicle supply. Use Value: 160µA per amplifier reduces total system standby current, extending battery backup runtime during ignition-off periods. | Use Scenario: Biopotential amplification for ECG/EEG leads in portable patient monitors. IC Role / Device Role / Timing Role: First-stage instrumentation-grade amplifier with 1pA bias current to prevent electrode polarization errors on Ag/AgCl dry electrodes. Use Value: Maintains DC-coupled baseline stability and <1µV p-p noise floor essential for detecting sub-millivolt cardiac waveforms. |
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 |
|---|---|---|---|
| OPA4703EA/250 | 1MHz GBW, 0.6V/µs SR, unity-gain stable - lower speed but broader gain flexibility. | Preferred for G = 1–4 circuits (e.g., unity-gain buffers, active filters) where OPA4704EA/250 is unstable. | Select OPA4703EA/250 when circuit requires unity-gain stability or gains <5; otherwise OPA4704EA/250 delivers superior speed at same power. |
| TLV2474IDR | 2.8MHz GBW, 1.5V/µs SR, 600µA IQ - higher power, lower precision (3mV VOS), wider temp range (–40°C to 125°C). | Better suited for high-temp automotive under-hood use but lacks OPA4704EA/250's 1pA bias current and 90dB CMRR. | Choose TLV2474IDR only if extended temperature operation is mandatory and 1pA bias current is not required. |
Compared with OPA4703EA/250 and TLV2474IDR, the OPA4704EA/250 uniquely balances 3MHz bandwidth, 160µA quiescent current, and 1pA input bias in a quad TSSOP-14-making it optimal for precision, low-power, medium-speed multi-channel systems where gain ≥5 is fixed.
Availability
OPA4704EA/250 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable data acquisition front-ends, automotive cabin environment monitoring, and medical patient vital sign amplification requiring stable component supply and guaranteed long-term availability.
Supply support for OPA4704EA/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 company specializing in analog and embedded processing solutions, with leadership in precision op amps, data converters, and power management ICs.
The OPA703/704 family-including OPA4704EA/250-is designed for low-power, rail-to-rail signal conditioning in space-constrained industrial, portable, and automotive systems where dynamic performance must coexist with microamp-level quiescent current.
FAQ
What is the minimum stable gain for OPA4704EA/250?
The OPA4704EA/250 is internally compensated for stable operation only at closed-loop gains of 5 or greater. Using it at gains below 5 risks oscillation due to phase margin reduction; for G = 1–4 applications, the pin-compatible OPA4703EA/250 is the correct selection. This gain restriction is explicitly specified in the Applications Information section of the SBOS180A datasheet.
Does OPA4704EA/250 support single-supply operation?
Yes, OPA4704EA/250 operates from a single supply of 4V to 12V, with rail-to-rail input and output swing enabling full dynamic range utilization-for example, a 5V supply allows input signals from 0V to 5V and output swings from 40mV to 4.96V into 100kΩ. The device's common-mode range extends 300mV beyond both rails, supporting true single-supply sensor interface topologies.
What is the maximum capacitive load OPA4704EA/250 can drive?
OPA4704EA/250 can drive up to 1000pF of pure capacitive load when configured for G ≥ 5, as confirmed by the "Small-Signal Overshoot vs Capacitive Load" curve in SBOS180A. At G = 5, overshoot remains <10% up to 1nF; for unity-gain use-which is not recommended-external compensation (e.g., 10Ω series resistor in feedback path) is required to maintain stability with >100pF loads.
How does OPA4704EA/250 handle input voltages exceeding the supply rails?
OPA4704EA/250 input terminals are protected by ESD diodes that conduct when voltage exceeds V+ or falls below V− by >300mV. Sustained currents above 10mA will damage the device; therefore, input signals exceeding rails must be current-limited via series resistors. The device exhibits no phase inversion under these conditions if current is properly limited, as verified in Figure 4 of SBOS180A.
Is OPA4704EA/250 RoHS compliant and what is its MSL rating?
Yes, OPA4704EA/250 is RoHS compliant (lead-free NiPdAu finish) and has a Moisture Sensitivity Level (MSL) rating of Level-2, with a peak reflow temperature of 260°C and floor life of 1 year when stored at ≤30°C/60% RH. This information is documented in the Package Option Addendum dated 22-Jul-2026 on ti.com.
OPA4704EA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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/250 FAQ
1.How can I place an order for OPA4704EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4704EA/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 OPA4704EA/250 reliable?
The price and inventory of OPA4704EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4704EA/250 is usually 5 days.
3.What payment methods are accepted for OPA4704EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4704EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4704EA/250?
OPA4704EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4704EA/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 OPA4704EA/250?
For technical support, including OPA4704EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4704EA/250 requirements.
6.How does Aetrix verify that OPA4704EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA4704EA/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 OPA4704EA/250 meets industry standards.
7.What is the process for return or replacement of OPA4704EA/250?
All OPA4704EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4704EA/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 OPA4704EA/250 part is unused and in its original packaging.
Return procedure for OPA4704EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4704EA/250 Tags
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