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Texas Instruments OPA4374AIDRG4
- Part No.:
- OPA4374AIDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4374AIDRG4.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,028
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Product details
Overview
OPA4374AIDRG4 from Texas Instruments is a quad rail-to-rail input/output CMOS operational amplifier optimized for low-power, single-supply portable systems. 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 operates from 2.3 V to 5.5 V and is specified across –40°C to +125°C - ideal for battery-powered sensor front-ends and precision A/D driver stages.
For engineers reviewing the OPA4374AIDRG4 datasheet, OPA4374AIDRG4 pinout, OPA4374AIDRG4 application, or OPA4374AIDRG4 equivalent, key selection criteria include its rail-to-rail I/O swing (≤25 mV from rails), low-noise performance (15 nV/√Hz at 10 kHz), high CMRR (≥80 dB), and absence of shutdown functionality - distinguishing it from the OPAx373 family.
Technical Context
The OPA4374AIDRG4 uses a complementary CMOS input stage enabling rail-to-rail input common-mode range from (V−) −0.2 V to (V+) + 0.2 V, with extended over-rail capability up to ±0.5 V. Its class AB output stage supports rail-to-rail output swing under light loads (≤25 mV from rails at RL = 100 kΩ) and maintains stability driving ≥250 pF in unity-gain configuration.
It features no enable/shutdown control - unlike the OPAx373 series - and is fully specified for operation at 2.3 V minimum supply. All four amplifiers share common V+ and V− pins, with independent inverting/noninverting inputs and outputs per channel, supporting simultaneous signal conditioning in compact multi-channel analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 6.5 MHz - enables stable unity-gain buffer or gain-of-10 amplification up to ~650 kHz without phase margin loss. |
| Slew Rate | 5 V/µs - supports clean 2-V step response settling in ≤1.5 µs (0.01%) for high-fidelity signal acquisition. |
| Input Offset Voltage | ≤5 mV (max) - ensures ≤0.1% full-scale error in 5-V-range sensor interfaces without trimming. |
| Quiescent Current | 585–750 µA per channel - allows four-channel operation below 3 mA total at 5 V, critical for coin-cell longevity. |
| Input Bias Current | ≤10 pA (max) - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiode TIA feedback). |
| Supply Voltage Range | 2.3 V to 5.5 V - interoperates directly with Li-ion (3.0–4.2 V), 3.3-V logic, and 5-V legacy systems without regulation. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and outdoor IoT node deployment. |
Pinout & Package
OPA4374AIDRG4 is packaged in a 14-pin SOIC (D package) with nominal body size 8.65 mm × 3.91 mm. The exposed thermal pad on underside is not present in this SOIC variant.
| Pin/Terminal | 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 or inverting gain configuration; high impedance preserves source integrity. |
| 3 | +IN A | Noninverting input, Channel A - accepts high-Z sensor signals; common-mode range extends beyond rails for flexible biasing. |
| 4 | V+ | Positive supply - shared by all four amplifiers; decoupling capacitor required within 1 cm for PSRR optimization. |
| 5 | +IN B | Noninverting input, Channel B - electrically isolated from Channel A; enables dual-sensor differential pair without crosstalk. |
| 6 | –IN B | Inverting input, Channel B - supports independent gain-setting resistors per channel for mismatch-tolerant designs. |
| 7 | OUT B | Amplifier B output - identical electrical specs to OUT A; layout symmetry recommended for matched thermal drift. |
| 8 | OUT C | Amplifier C output - provides third independent analog path; eliminates need for multiple single/dual op-amp ICs. |
| 9 | –IN C | Inverting input, Channel C - supports cascaded filtering or multi-stage gain without inter-channel coupling. |
| 10 | +IN C | Noninverting input, Channel C - enables three-channel instrumentation front-end with shared reference. |
| 11 | V− | Negative supply - ground-referenced in single-supply use; must be low-impedance return path for all channels. |
| 12 | +IN D | Noninverting input, Channel D - completes quad-channel set; suitable for reference buffer or calibration path. |
| 13 | –IN D | Inverting input, Channel D - configurable as summing node or active filter input with independent component values. |
| 14 | OUT D | Amplifier D output - delivers fourth conditioned signal; enables full analog preprocessing before multiplexed ADC sampling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full supply utilization in 2.3–5.5 V systems - e.g., 0–5 V output from 5-V rail with only 25-mV headroom loss. |
| 6.5-MHz bandwidth at 585-µA/ch | Delivers >10× higher speed-per-power than legacy low-power op-amps (e.g., TLC27L4), enabling faster loop response. |
| 10-pA max input bias current | Permits direct connection to >100-MΩ sources (e.g., piezoelectric sensors) without significant DC error accumulation. |
| Specified from –40°C to +125°C | Eliminates derating calculations for automotive cabin, motor control, or industrial ambient environments. |
| No internal shutdown control | Simplifies power sequencing - no enable timing constraints or leakage paths; ideal for always-on monitoring circuits. |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Amplifying low-level biopotential signals (ECG, EMG) from dry electrodes in wearable patches. IC Role / Device Role / Timing Role: Quad-channel signal conditioning front-end: two channels for differential lead I/II, one for right-leg drive, one for reference buffer. Use Value: Rail-to-rail I/O captures full electrode swing at 3.3 V supply; 10-pA IB prevents baseline drift on high-impedance skin interface. |
Use Scenario: Conditioning thermistor, humidity, and accelerometer outputs in solar-charged environmental nodes. IC Role / Device Role / Timing Role: Simultaneous analog front-end for multi-sensor fusion - each channel independently biased and filtered. Use Value: 585-µA/channel quiescent current enables >1-year battery life on CR2032; 6.5-MHz GBW supports anti-alias filtering at 10-kHz sample rates. |
| Industrial Analog Input Modules | High-Fidelity Audio Line Drivers |
Use Scenario: Signal conditioning for 4–20 mA loop receivers and RTD bridges in DIN-rail PLC I/O cards. IC Role / Device Role / Timing Role: Precision gain/level-shift stage before SAR ADC; V− tied to system ground, V+ to 5 V. Use Value: ≤5-mV VOS and 80-dB CMRR reject common-mode noise from shared 24-V field wiring; 125°C rating survives enclosure heat. |
Use Scenario: Low-distortion line driver for portable DAC outputs feeding headphones or active speakers. IC Role / Device Role / Timing Role: Unity-gain buffer with 0.0013% THD+N at 1 kHz - preserves audio spectral purity. Use Value: Class AB output delivers 5-VPP into 10-kΩ loads with <1.5-µs settling; rail-to-rail swing avoids clipping on 3.3-V DAC outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4377AIDR | Lower VOS (150 µV typ vs 1 mV typ), higher IQ (760 µA/ch), same GBW (5.5 MHz), no extended temperature grade. | Preferred for precision DC-coupled systems (e.g., weigh scales); unsuitable for extended-temp industrial use. | Select OPA4377AIDR when sub-mV offset dominates design requirements and 125°C operation is unnecessary. |
| TLV9054IPWR | Higher GBW (12 MHz), lower IQ (440 µA/ch), wider supply (1.8–5.5 V), but reduced VOS spec (1.6 mV max) and no 125°C rating. | Better for high-speed, low-voltage (1.8 V) applications like portable oscilloscopes; lacks automotive/industrial temp qualification. | Choose TLV9054IPWR for battery-constrained, high-bandwidth designs where 125°C operation is not required. |
Compared with OPA4374AIDRG4, OPA4377AIDR trades temperature range and cost for superior DC precision, while TLV9054IPWR prioritizes speed and ultra-low supply voltage at the expense of guaranteed high-temperature performance and offset stability.
Availability
OPA4374AIDRG4 is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, industrial analog input modules, and high-fidelity audio line drivers requiring stable component supply across automotive, industrial, and consumer product lifecycles.
Supply support for OPA4374AIDRG4 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 signal chain and low-power design.
The OPAx374 family was engineered for general-purpose, low-power, rail-to-rail op-amp applications - especially where wide supply range, high AC performance, and robust temperature operation are essential in space- and energy-constrained systems.
FAQ
What is the maximum operating temperature for OPA4374AIDRG4?
The OPA4374AIDRG4 is fully specified from –40°C to +125°C, with absolute maximum junction temperature rated at 150°C. This makes OPA4374AIDRG4 suitable for under-hood automotive, industrial motor control, and outdoor IoT deployments where ambient temperatures exceed 85°C. Thermal metrics (e.g., RθJA = 86.5°C/W for SOIC) confirm safe operation at full load within this range when PCB copper area meets recommended layout guidelines.
Does OPA4374AIDRG4 include a shutdown feature?
No, OPA4374AIDRG4 does not include a shutdown or enable function. Unlike the OPAx373 family, the OPAx374 series - including OPA4374AIDRG4 - is designed for continuous-operation applications. This eliminates enable timing constraints, reduces external component count, and avoids potential leakage paths associated with shutdown circuitry - beneficial for always-on sensor monitoring and safety-critical analog paths.
What is the typical input offset voltage of OPA4374AIDRG4?
The typical input offset voltage of OPA4374AIDRG4 is 1 mV at 25°C, with a maximum of 5 mV across the full –40°C to +125°C temperature range. This specification is verified per TI's SBOS279F datasheet, Section 7.9. The drift is characterized at ≤3 µV/°C, ensuring predictable DC error accumulation in precision gain stages used for sensor signal conditioning and bridge amplifier applications.
Can OPA4374AIDRG4 drive capacitive loads reliably?
Yes, OPA4374AIDRG4 is stable driving ≥250 pF in unity-gain configuration, as confirmed in Figure 17 of the SBOS279F datasheet. For heavier loads or higher gains, stability is maintained via proper layout (short traces, local bypassing) and optional isolation resistors (10–20 Ω) in series with the output. Its internal compensation ensures phase margin remains >45° across process/voltage/temperature corners without external compensation components.
What package options are available for OPA4374AIDRG4?
OPA4374AIDRG4 is offered exclusively in the 14-pin SOIC (D package) with body dimensions 8.65 mm × 3.91 mm. While the OPA4374 family also includes a TSSOP-14 (PW) variant, the "AIDRG4" suffix specifically denotes the SOIC package with Green (RoHS-compliant) finish and tape-and-reel packaging. No QFN, VSSOP, or ceramic variants exist for this part number.
OPA4374AIDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- 5V/µs
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 585µA (x4 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:
- 14-SOIC
OPA4374AIDRG4 FAQ
1.How can I place an order for OPA4374AIDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4374AIDRG4 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 OPA4374AIDRG4 reliable?
The price and inventory of OPA4374AIDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4374AIDRG4 is usually 5 days.
3.What payment methods are accepted for OPA4374AIDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4374AIDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4374AIDRG4?
OPA4374AIDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4374AIDRG4 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 OPA4374AIDRG4?
For technical support, including OPA4374AIDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4374AIDRG4 requirements.
6.How does Aetrix verify that OPA4374AIDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA4374AIDRG4 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 OPA4374AIDRG4 meets industry standards.
7.What is the process for return or replacement of OPA4374AIDRG4?
All OPA4374AIDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4374AIDRG4, 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 OPA4374AIDRG4 part is unused and in its original packaging.
Return procedure for OPA4374AIDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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