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Texas Instruments OPA2374AID
- Part No.:
- OPA2374AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2374AID.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:229
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Product details
Overview
OPA2374AID from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-power, single-supply operation (2.3 V to 5.5 V). It delivers 6.5 MHz gain-bandwidth, 5 V/µs slew rate, and 585 µA quiescent current per channel, with input offset voltage ≤5 mV (max) and input bias current ≤10 pA (max). It is widely used in battery-powered sensor signal conditioning and portable A/D converter driving circuits.
For engineers reviewing the OPA2374AID datasheet, OPA2374AID pinout, OPA2374AID application, or OPA2374AID equivalent, key selection criteria include its rail-to-rail I/O capability at low supply voltage, ultra-low input bias current for high-impedance sources, guaranteed operation up to 125°C, and SOIC-8 package compatibility with space-constrained industrial and portable designs.
Technical Context
The OPA2374AID employs a complementary differential input stage enabling rail-to-rail common-mode input range extending 200 mV beyond both supply rails. Its class AB output stage supports rail-to-rail swing-within 18 mV of rails under light load (100 kΩ) and within 125 mV under 5 kΩ load across –40°C to 125°C.
It operates without shutdown functionality (unlike OPA2373), features unity-gain stability, and maintains ≥80 dB CMRR and PSRR over full temperature and supply range. Electrical characteristics are fully specified from 2.3 V to 5.5 V supply and –40°C to 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 6.5 MHz - enables stable closed-loop operation up to ~500 kHz at G = +10, suitable for anti-aliasing and active filter stages. |
| Slew rate | 5 V/µs - supports clean 1 VPP signals up to ~800 kHz without distortion in unity-gain buffer applications. |
| Input offset voltage | ≤5 mV (max) - ensures ≤0.1% gain error in 5 V full-scale precision sensor interfaces with 10-bit ADCs. |
| Quiescent current | 585–800 µA per channel - enables dual-opamp signal chain operation on coin-cell or Li-ion battery for >1-year standby life. |
| Supply voltage range | 2.3 V to 5.5 V - allows direct interface with 3.3 V and 5 V logic domains and operation down to near-dead battery voltage. |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and outdoor IoT sensor nodes. |
| Input bias current | ≤10 pA (max) - minimizes voltage error in high-Z pH, photodiode, or piezoelectric sensor front-ends. |
Pinout & Package
OPA2374AID is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with exposed pad not present and standard JEDEC-compliant footprint.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or next-stage input; rail-to-rail swing supports full dynamic range utilization. |
| 2 | –IN A | Inverting input, channel A - connects to feedback network in inverting configurations or reference point in transimpedance designs. |
| 3 | +IN A | Noninverting input, channel A - accepts high-impedance sensor or reference signals; benefits from ≤10 pA IB for minimal loading. |
| 4 | V– | Negative supply terminal - tied to ground in single-supply systems; must be low-impedance for noise immunity. |
| 5 | +IN B | Noninverting input, channel B - independent input for second signal path; no crosstalk impact on channel A below 100 dB at DC. |
| 6 | –IN B | Inverting input, channel B - used for differential pair configuration or separate gain stage; shares same precision specs as channel A. |
| 7 | OUT B | Amplifier B output - electrically isolated from OUT A; supports dual-path signal processing without shared output node. |
| 8 | V+ | Positive supply terminal - accepts 2.3–5.5 V; internal regulation ensures consistent performance across voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range extends from (V–) – 0.2 V to (V+) + 0.2 V - eliminates level-shifting circuitry when interfacing with 0–3.3 V sensors or DACs. |
| Rail-to-rail output | Swings within 18 mV of rails (100 kΩ load) - maximizes usable signal headroom in low-voltage systems, improving SNR by up to 3 dB. |
| Ultra-low input bias current | ≤10 pA max - prevents significant voltage drop across >100 MΩ source impedances, critical for electrochemical and MEMS sensor accuracy. |
| High CMRR & PSRR | ≥70 dB over –40°C to 125°C - rejects power rail noise and common-mode interference in noisy industrial environments. |
| Unity-gain stable | No external compensation required - simplifies layout and reduces BOM count in buffer, follower, and gain-of-one configurations. |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Amplifying weak analog outputs from wearable ECG or pulse oximetry sensors operating on coin-cell batteries. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one channel buffers reference voltage, the other amplifies sensor signal with gain and filtering. Use Value: 585 µA per channel quiescent current enables multi-year operation; rail-to-rail I/O preserves full sensor dynamic range at 3 V supply. |
Use Scenario: Signal conditioning and ADC driver in environmental monitoring nodes deployed in remote locations. IC Role / Device Role / Timing Role: Dual op-amp front-end: first stage provides programmable gain for thermistor/RTD inputs, second stage drives SAR ADC input. Use Value: ≤5 mV offset and ≤10 pA IB ensure <0.5% measurement error over –40°C to 85°C; 125°C rating supports extended field reliability. |
| Industrial Process Transmitters | Active Filter Stages |
Use Scenario: 4–20 mA loop-powered transmitter with local sensor signal amplification and linearization. IC Role / Device Role / Timing Role: Precision dual amplifier: one channel conditions RTD bridge output, the other serves as voltage-to-current converter input buffer. Use Value: Guaranteed operation to 125°C matches harsh process environments; high PSRR suppresses loop-induced supply ripple. |
Use Scenario: Second-order Sallen-Key low-pass filter in audio or communication receiver front-ends. IC Role / Device Role / Timing Role: Unity-gain stable amplifier implementing filter transfer function with minimal phase shift and overshoot. Use Value: 6.5 MHz GBW supports filter cutoffs up to 1 MHz; rail-to-rail output avoids clipping in ±2.5 V signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel rail-to-rail CMOS op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2376AID | Lower offset (25 µV typ vs 1 mV typ), lower noise (7.5 nV/√Hz), but higher IQ (760 µA vs 585 µA); same SOIC-8 package. | Better suited for precision instrumentation where offset drift dominates error budget; less optimal for ultra-low-power battery use. | Select OPA2376AID when offset voltage and noise are primary constraints; retain OPA2374AID for cost-sensitive, low-IQ designs. |
| MCP6022-I/SN | Lower bandwidth (10 MHz vs 6.5 MHz), higher IQ (1 mA), wider supply range (2.7–6 V), but lower cost; also SOIC-8. | Acceptable for general-purpose buffering where speed is secondary; lacks 125°C rating and 2.3 V minimum supply. | Choose MCP6022-I/SN for commercial-temperature, non-critical applications with tighter BOM cost targets. |
Compared with OPA2376AID and MCP6022-I/SN, the OPA2374AID uniquely balances low quiescent current, extended temperature range, and rail-to-rail performance in a legacy-compatible SOIC-8 footprint-making it optimal for industrial and long-life portable systems where power, precision, and reliability intersect.
Availability
OPA2374AID is available at Aetrix Electronics and suitable for portable medical devices, battery-powered data loggers, and industrial process transmitters requiring stable component supply with guaranteed long-term manufacturability.
Supply support for OPA2374AID 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 delivering analog and embedded processing solutions, with deep expertise in precision amplifiers, power management, and signal chain ICs.
The OPAx374 family was designed specifically for low-power, rail-to-rail signal conditioning in portable, battery-operated, and high-temperature industrial systems-emphasizing precision, efficiency, and robustness without shutdown complexity.
FAQ
What is the maximum operating temperature for OPA2374AID?
The OPA2374AID is fully specified and guaranteed to operate from –40°C to +125°C ambient temperature. This extended range is validated across all key parameters-including offset voltage, CMRR, and quiescent current-and makes the device suitable for under-hood automotive, industrial motor control, and outdoor sensor applications where thermal stress is critical. The OPA2374AID datasheet confirms this rating in Section 7.3 (Recommended Operating Conditions).
Does OPA2374AID have a shutdown pin?
No, the OPA2374AID does not include a shutdown feature. Unlike the pin-compatible OPA2373 family, the OPA2374AID is designed for continuous-operation applications and omits the enable/control pins. Its SOIC-8 pinout (pins 1–8) contains only two amplifier channels, dual inputs/outputs, and dual supply terminals-no dedicated shutdown signal. This simplifies design for always-on signal chains where power cycling is unnecessary.
What is the typical input offset voltage of OPA2374AID?
The typical input offset voltage of OPA2374AID is 1 mV at 25°C, with a maximum of 5 mV across the full –40°C to +125°C temperature range. This value is measured under standard test conditions (VS = 5 V, RL = 10 kΩ) and is documented in Section 7.9 (Electrical Characteristics) of the official TI datasheet SBOS279F. The low offset supports accurate DC-coupled amplification in sensor interfaces without trimming.
Can OPA2374AID drive capacitive loads?
Yes, the OPA2374AID can drive capacitive loads up to approximately 250 pF in unity-gain configuration while maintaining stability, as confirmed in Figure 17 of the TI datasheet. For heavier loads (>500 pF), adding a small isolation resistor (10–20 Ω) between the output and capacitance restores phase margin. This behavior stems from its internal compensation and class AB output stage, making it suitable for driving ADC inputs and long PCB traces without oscillation.
Is OPA2374AID pin-compatible with other OPA237x devices?
The OPA2374AID is pin-compatible with the OPA2373AID in the same SOIC-8 package-both share identical pin assignments for OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, and V+. However, OPA2373AID includes enable pins (not present on OPA2374AID), so direct substitution requires verifying that shutdown functionality is unused or externally managed. Always confirm pinout alignment using TI's official "Pin Functions: OPA2374" table before replacement.
OPA2374AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5V/µs
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 585µA (x2 Channels)
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2374AID FAQ
1.How can I place an order for OPA2374AID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2374AID 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 OPA2374AID reliable?
The price and inventory of OPA2374AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2374AID is usually 5 days.
3.What payment methods are accepted for OPA2374AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2374AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2374AID?
OPA2374AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2374AID 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 OPA2374AID?
For technical support, including OPA2374AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2374AID requirements.
6.How does Aetrix verify that OPA2374AID is sourced from the original manufacturer or authorized distributors?
All OPA2374AID 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 OPA2374AID meets industry standards.
7.What is the process for return or replacement of OPA2374AID?
All OPA2374AID units undergo pre-shipment inspection (PSI). If there is an issue with OPA2374AID, 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 OPA2374AID part is unused and in its original packaging.
Return procedure for OPA2374AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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