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Texas Instruments OPA2704EA/250G4
- Part No.:
- OPA2704EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2704EA/250G4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,644
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Product details
Overview
OPA2704EA/250G4 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 max 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 where low power and stable high-gain performance are required.
For engineers reviewing the OPA2704EA/250G4 datasheet, OPA2704EA/250G4 pinout, OPA2704EA/250G4 application, or OPA2704EA/250G4 equivalent, key selection criteria include its 3MHz GBW at G≥5, rail-to-rail I/O swing within 40mV of rails, 1pA input bias current, −40°C to +85°C temperature rating, and MSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA2704EA/250G4 employs a complementary input stage enabling rail-to-rail common-mode input range extending 300mV beyond supply rails, and a class-AB output stage achieving rail-to-rail output swing to within 40mV of V+ or V− under light loads. Its internal compensation is optimized for closed-loop gains of 5 or greater, ensuring stability without external compensation.
It features full-scale CMRR of 90dB at ±5V, PSRR of 100dB, open-loop gain >100dB (RL = 20kΩ), and low 45nV/√Hz input voltage noise density at 1kHz - all specified over −40°C to +85°C. Input bias current remains ≤±10pA across temperature, supporting high-impedance source interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 3MHz at G ≥ 5 - enables stable amplification of signals up to ~600kHz in non-inverting G=5 configuration with <0.1% settling error. |
| Slew Rate | 3V/µs - supports clean 10Vpp output at 100kHz in G=5 without slew-induced distortion. |
| Input Offset Voltage | ±160µV max - contributes ≤0.0008% gain error in a 20V full-scale G=5 system. |
| Quiescent Current | 160µA per amplifier - allows dual-channel operation from coin-cell or energy-harvesting sources with <330µW total supply power at ±2.5V. |
| Rail-to-Rail Output Swing | Within 40mV of rails (RL = 100kΩ) - preserves >99% dynamic range in 3.3V or 5V systems. |
| Input Bias Current | ±1pA typical - permits direct interface with >1GΩ sensor elements (e.g., piezoresistive, pH electrodes) without significant DC error. |
| CMRR | 90dB full-scale - rejects >30k:1 common-mode interference in bridge sensor configurations. |
Pinout & Package
OPA2704EA/250G4 is housed in an 8-pin MSOP (VSSOP, DGK) package - 3.0mm × 3.0mm, 0.65mm pitch, exposed thermal pad - optimized for compact, thermally efficient layouts in portable and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply connection; accepts 4V–12V single or ±2V–±6V dual supply. |
| 2 | Out B | Inverting amplifier output channel B; rail-to-rail capable, drives ≥10mA. |
| 3 | –In B | Inverting input terminal for channel B; high-impedance (5TΩ || 4pF), ESD-protected. |
| 4 | +In B | Non-inverting input terminal for channel B; same rail-to-rail CMVR as –In B. |
| 5 | Out A | Inverting amplifier output channel A; electrically identical to Out B, fully independent. |
| 6 | –In A | Inverting input terminal for channel A; shares no internal coupling with channel B. |
| 7 | +In A | Non-inverting input terminal for channel A; supports common-mode voltages from (V−)−0.3V to (V+)+0.3V. |
| 8 | V− | Negative supply or ground reference; must be decoupled with 1µF tantalum + 1000pF ceramic. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in low-voltage (3.3V/5V) systems without level-shifting circuitry. |
| Optimized for G ≥ 5 | Guarantees stability and 3MHz bandwidth without external compensation - eliminates design iteration for high-gain stages. |
| 160µA per amplifier quiescent current | Supports always-on sensor monitoring in battery-powered IoT nodes with multi-year runtime. |
| 1pA input bias current | Minimizes voltage error across high-value feedback networks (e.g., 10MΩ) and enables direct photodiode transimpedance use. |
| −40°C to +85°C guaranteed operation | Validates performance in automotive cabin, industrial PLC, and outdoor metering environments without derating. |
Applications
| Automotive Cabin Sensors | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Amplifying low-level signals from MEMS accelerometers and pressure sensors in vehicle airbag control units and HVAC systems. IC Role / Device Role / Timing Role: Dual-channel signal conditioner providing G=5 gain and rail-to-rail buffering before ADC sampling. Use Value: 3MHz GBW ensures accurate capture of transient crash events; 160µA/channel enables integration into low-power safety subsystems compliant with ISO 26262 ASIL-B requirements. |
Use Scenario: Front-end amplification of ECG electrode signals in handheld patient monitors and wearable vital sign recorders. IC Role / Device Role / Timing Role: Dual op-amp implementing instrumentation-grade differential gain stage with high CMRR and ultra-low input current. Use Value: ±1pA input bias prevents electrode polarization drift; rail-to-rail output drives 12-bit SAR ADCs directly from 3.3V supply, eliminating level-shifters and reducing BOM count. |
| Industrial Data Acquisition | Test & Measurement Signal Sources |
|
Use Scenario: Buffering and scaling outputs from precision DACs (e.g., DAC7644) in programmable logic controller analog output modules. IC Role / Device Role / Timing Role: Dual-supply buffered reference driver delivering stable ±2.5V references with low noise and zero phase inversion. Use Value: 90dB CMRR suppresses supply ripple on reference lines; 45nV/√Hz noise density maintains >16-bit effective resolution in 100ksps DAQ systems. |
Use Scenario: Building programmable gain stages in benchtop function generators and calibration equipment requiring fast settling and low distortion. IC Role / Device Role / Timing Role: High-speed dual op-amp configured as non-inverting amplifier (G=5) with 3V/µs slew rate and 0.025% THD+N. Use Value: 18µs 0.1% settling time enables accurate pulse generation up to 50kHz; rail-to-rail output supports full-scale 10Vpp sine/square wave generation from ±5V supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, rail-to-rail, high-gain op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2704UA/2K5 | Same electrical specs but in SOIC-8 (4.9mm × 6.0mm); θJA = 150°C/W vs 150°C/W for MSOP-8; identical marking "OPA2704UA". | Preferred for prototyping, through-hole rework, or legacy board compatibility; larger footprint limits high-density layouts. | Select when board real estate allows and hand-soldering or socket-based validation is required. |
| MCP6V72-E/SN | Zero-drift architecture; 25µV max VOS, 0.25µV/°C drift; 2MHz GBW, 1.2V/µs SR; 170µA IQ; SOIC-8 only. | Better DC precision for low-frequency (<10kHz) sensor apps; lower speed limits use in dynamic signal chains. | Choose for ultra-low offset-critical applications like weigh scales or thermopile amplifiers where long-term drift matters more than bandwidth. |
Compared with OPA2704UA/2K5, the OPA2704EA/250G4 offers identical performance in a 43% smaller footprint - critical for portable medical and automotive modules. Against MCP6V72-E/SN, it trades zero-drift precision for 1.5× higher bandwidth and faster settling, making it superior for mixed-signal data acquisition where AC fidelity dominates.
Availability
OPA2704EA/250G4 is available at Aetrix Electronics and suitable for automotive cabin sensors, portable medical instrumentation, industrial data acquisition, and test & measurement signal sources requiring stable component supply, RoHS-compliant packaging, and guaranteed −40°C to +85°C operation.
Supply support for OPA2704EA/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 OPA703/704 family - including OPA2704EA/250G4 - was designed specifically for low-power, rail-to-rail, high-gain signal conditioning in space- and energy-constrained applications such as portable instrumentation and automotive subsystems.
FAQ
What is the gain-bandwidth product of the OPA2704EA/250G4, and under what conditions is it specified?
The OPA2704EA/250G4 has a gain-bandwidth product of 3MHz, specified at closed-loop non-inverting gain ≥5 with ±5V supplies and RL = 20kΩ. This value is guaranteed over −40°C to +85°C and reflects its internal compensation optimization - it is not unity-gain stable and should not be used at G<5 without external compensation.
Does the OPA2704EA/250G4 support true rail-to-rail input and output operation?
Yes, the OPA2704EA/250G4 supports rail-to-rail input common-mode voltage range from (V−)−0.3V to (V+)+0.3V and rail-to-rail output swing to within 40mV of either rail under light loads (RL = 100kΩ). At RL = 20kΩ, output swing degrades to within 75mV of rails while maintaining >100dB open-loop gain - confirmed across the full −40°C to +85°C range.
What is the maximum capacitive load the OPA2704EA/250G4 can drive stably?
The OPA2704EA/250G4 can drive up to 1000pF of pure capacitive load stably when configured at G ≥ 5. At unity gain, stability requires external compensation - e.g., a 10Ω–20Ω series resistor in the feedback path - as documented in TI's SBOS180A datasheet Figure 5. The device's small-signal overshoot vs capacitive load curve confirms this limit.
How does the input bias current of the OPA2704EA/250G4 behave over temperature and common-mode voltage?
The OPA2704EA/250G4 exhibits ±1pA typical input bias current at +25°C, rising to <±10pA over −40°C to +125°C. Its input stage uses complementary P/N-channel pairs, causing a <500mV transition region near mid-rail where IB increases slightly - but remains <10pA even at extremes. This behavior is characterized in SBOS180A Figures 10 and 11.
Is the OPA2704EA/250G4 pin-compatible with other devices in the OPA703/704 family?
Yes - the OPA2704EA/250G4 shares identical pinout with OPA2703EA/250, OPA2704UA, and OPA2703UA in the MSOP-8 and SOIC-8 packages. Pin 1 is V+, pins 2–4 serve channel B, pins 5–7 serve channel A, and pin 8 is V−. This allows drop-in replacement between OPA2703 and OPA2704 variants when layout accommodates the same footprint.
OPA2704EA/250G4 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:
- Discontinued at Digi-Key
- 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/250G4 FAQ
1.How can I place an order for OPA2704EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2704EA/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 OPA2704EA/250G4 reliable?
The price and inventory of OPA2704EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2704EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA2704EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2704EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2704EA/250G4?
OPA2704EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2704EA/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 OPA2704EA/250G4?
For technical support, including OPA2704EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2704EA/250G4 requirements.
6.How does Aetrix verify that OPA2704EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA2704EA/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 OPA2704EA/250G4 meets industry standards.
7.What is the process for return or replacement of OPA2704EA/250G4?
All OPA2704EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2704EA/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 OPA2704EA/250G4 part is unused and in its original packaging.
Return procedure for OPA2704EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2704EA/250G4 Tags
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LM358DT
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