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Texas Instruments OPA4376AIPWRG4
- Part No.:
- OPA4376AIPWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4376AIPWRG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
OPA4376AIPWRG4 from Texas Instruments is a quad-channel, rail-to-rail input/output precision operational amplifier with e-trim™ technology, delivering 5 μV typical offset voltage, 7.5 nV/√Hz input voltage noise at 1 kHz, 5.5 MHz gain-bandwidth product, and 760 μA typical quiescent current per amplifier - optimized for high-resolution ADC buffering and low-power sensor signal conditioning in battery-powered medical and test equipment.
For engineers reviewing the OPA4376AIPWRG4 datasheet, OPA4376AIPWRG4 pinout, OPA4376AIPWRG4 application, or OPA4376AIPWRG4 equivalent, key selection criteria include its 2.2 V to 5.5 V single-supply operation, 0.8 μVPP 0.1–10 Hz noise, ±10 mV input common-mode range beyond rails, 120 dB open-loop gain, and TSSOP-14 package compatibility with space-constrained PCB layouts.
Technical Context
The OPA4376AIPWRG4 integrates TI's e-trim™ process for factory-trimmed dc precision, achieving 25 μV maximum input offset voltage and 0.32 μV/°C max drift over –40°C to +125°C. Its CMOS input stage delivers 0.2 pA typical input bias current and 13 pF common-mode input capacitance.
Designed for unity-gain stability, it drives up to 250 pF capacitive loads directly and supports rail-to-rail output swing within 20 mV of each rail (at 10 kΩ load, TA = 25°C). PSRR exceeds 90 dB from 2.2 V to 5.5 V supply, enabling robust performance in unregulated battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 5 μV typical - enables sub-16-bit error floor in precision DC-coupled signal chains without external trimming |
| Input Voltage Noise | 7.5 nV/√Hz at 1 kHz - preserves SNR in audio and sensor front-ends with bandwidths up to 5.5 MHz |
| Gain Bandwidth Product | 5.5 MHz - supports stable closed-loop gains ≥10 for anti-aliasing filters driving SAR ADCs |
| Quiescent Current | 760 μA per amplifier - allows four independent channels in <3.1 mA total, ideal for portable instrumentation |
| Supply Voltage Range | 2.2 V to 5.5 V - operates directly from single Li-ion cells or 3.3 V/5 V rails without LDO regulation |
| Input Common-Mode Range | (V−) − 0.1 V to (V+) + 0.1 V - accepts signals beyond supply rails, simplifying level-shifting in mixed-supply systems |
| Open-Loop Gain | 120 dB minimum - ensures <0.0025% gain error in 10× amplification of mV-level sensor outputs |
Pinout & Package
TSSOP-14 package (5.00 mm × 4.40 mm body), thermally enhanced for industrial temperature operation (–40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | OUT A/B/C/D | Amplifier output terminals - rail-to-rail capable, specified for 20 mV min swing from rails at 10 kΩ |
| 2, 6, 9, 13 | –IN A/B/C/D | Inverting inputs - high-impedance CMOS node (0.2 pA bias), paired with corresponding +IN pins |
| 3, 5, 10, 12 | +IN A/B/C/D | Non-inverting inputs - support common-mode voltages 100 mV beyond supply rails |
| 4 | V+ | Positive supply terminal - accepts 2.2 V to 5.5 V; internal ESD diodes clamp to rails |
| 11 | V− | Negative supply terminal - referenced to system ground in single-supply configurations |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ DC precision | Factory-trimmed offset (5 μV typ) and drift (0.32 μV/°C max) eliminate need for manual calibration in production |
| Rail-to-rail I/O | Input extends 100 mV beyond supplies; output swings within 20 mV of rails - maximizes dynamic range in low-voltage systems |
| Low-noise architecture | 0.8 μVPP integrated 0.1–10 Hz noise + 7.5 nV/√Hz spectral density - critical for µV-level biomedical signal integrity |
| Capacitive load drive | Stable with up to 250 pF pure capacitive load in unity-gain buffer - eliminates external isolation resistors for ADC input filtering |
| High PSRR & CMRR | ≥90 dB power-supply rejection and ≥76 dB common-mode rejection - maintains accuracy in noisy digital environments |
Applications
| ADC Buffer | Medical Instrumentation |
|---|---|
Use Scenario: Driving the analog input of a 16-bit SAR ADC (e.g., ADS8327) in a portable ECG monitor. IC Role / Device Role / Timing Role: Precision voltage follower with low THD+N (0.00027%) and fast settling (2 µs to 0.01%) to preserve conversion fidelity. Use Value: Enables full-scale utilization of ADC resolution without gain/offset errors from amplifier nonlinearity or noise folding. |
Use Scenario: Amplifying microvolt-level biopotential signals from dry-electrode EEG sensors. IC Role / Device Role / Timing Role: First-stage gain block with ultra-low input bias current (0.2 pA) and 0.8 μVPP 0.1–10 Hz noise to avoid electrode polarization artifacts. Use Value: Maintains signal integrity across patient movement-induced baseline shifts while consuming <3.1 mA total for quad-channel acquisition. |
| Handheld Test Equipment | Active Filtering |
Use Scenario: Signal conditioning front-end in a battery-powered handheld multimeter with autoranging. IC Role / Device Role / Timing Role: Programmable-gain amplifier (PGA) channel with rail-to-rail input enabling seamless range switching between µV and V scales. Use Value: Eliminates external level-shifting circuitry and reduces BOM count by supporting direct connection to 2.2–5.5 V unregulated battery supply. |
Use Scenario: Second-order Butterworth low-pass filter (50 kHz cutoff) preceding a high-speed data acquisition system. IC Role / Device Role / Timing Role: Unity-gain stable active filter stage with 5.5 MHz GBW ensuring flat passband response and controlled roll-off (–40 dB/decade). Use Value: Prevents aliasing without phase distortion in time-critical measurements, leveraging internal stability for direct 250 pF capacitor drive. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4188AIPWR | Zero-drift architecture (0.003 μV/°C drift), higher 2 MHz GBW, but 470 μA IQ - lower drift, narrower bandwidth, lower power | Better for <1 ppm/°C drift-critical DC applications (e.g., strain gauge bridges); less suitable for >100 kHz AC-coupled sensor paths | Select OPA4188AIPWR when long-term dc stability outweighs ac bandwidth needs; verify layout for chopper noise peaks |
| AD8604ARUZ | 10 nV/√Hz noise, 8 MHz GBW, 1 mA IQ, 600 μV max VOS - higher noise, wider bandwidth, higher power, looser offset spec | Preferred for higher-frequency active filters (>100 kHz) where moderate noise is acceptable, but not for sub-μV sensor interfaces | Choose AD8604ARUZ when bandwidth >5.5 MHz is required and 7.5 nV/√Hz noise margin is not critical to system SNR |
Compared with OPA4376AIPWRG4, OPA4188AIPWR offers superior dc drift performance at reduced bandwidth and power, while AD8604ARUZ trades higher noise and offset for greater speed - making OPA4376AIPWRG4 the optimal balance for portable precision analog front-ends requiring both low noise and moderate bandwidth.
Availability
OPA4376AIPWRG4 is available at Aetrix Electronics and suitable for medical instrumentation, handheld test equipment, and precision ADC buffering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA4376AIPWRG4 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 OPAx376 family was designed specifically for high-accuracy, low-power signal conditioning in battery-operated portable instruments and industrial sensors - combining e-trim™ dc precision with rail-to-rail operation and low quiescent current.
FAQ
What is the maximum capacitive load the OPA4376AIPWRG4 can drive stably in unity-gain configuration?
The OPA4376AIPWRG4 can directly drive up to 250 pF of pure capacitive load while maintaining unity-gain stability, as confirmed in TI's SBOS406G datasheet Figure 16. For loads exceeding this value, a small series resistor (10–20 Ω) between the output and capacitive node restores phase margin without degrading dc accuracy - a technique validated in the device's Application Information section.
Does the OPA4376AIPWRG4 support true rail-to-rail input common-mode voltage range?
Yes, the OPA4376AIPWRG4 supports an input common-mode voltage range from (V−) − 0.1 V to (V+) + 0.1 V, extending 100 mV beyond both supply rails. This is explicitly specified in the Electrical Characteristics table under "Input Voltage Range" and enables direct interfacing with signals that exceed the supply boundaries - such as sensor outputs in mixed-voltage systems.
What is the typical quiescent current per amplifier channel in the OPA4376AIPWRG4?
The OPA4376AIPWRG4 draws 760 μA typical quiescent current per amplifier channel at 5.5 V supply and 25°C, as stated in the Features list and Electrical Characteristics table. Total device current is therefore ~3.04 mA for all four channels operating simultaneously - a key enabler for battery-powered applications requiring multi-channel precision amplification.
How does the e-trim™ technology in the OPA4376AIPWRG4 improve system-level accuracy?
e-trim™ technology in the OPA4376AIPWRG4 performs factory calibration of input offset voltage and drift during final test, reducing typical VOS to 5 μV and max drift to 0.32 μV/°C over –40°C to +125°C. This eliminates field calibration steps and ensures consistent channel-to-channel matching in quad configurations - directly improving measurement repeatability in multi-sensor data loggers and portable analyzers.
Is the OPA4376AIPWRG4 rated for operation at +125°C ambient temperature?
Yes, the OPA4376AIPWRG4 is fully specified for continuous operation from –40°C to +125°C ambient temperature, with all key parameters (including offset voltage, noise, and gain bandwidth) guaranteed across this range. The TSSOP-14 package's thermal metrics - including RθJA = 107.8°C/W - support reliable thermal performance in sealed industrial enclosures without forced airflow.
OPA4376AIPWRG4 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:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Single Ended, Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 760µA (x4 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
OPA4376AIPWRG4 FAQ
1.How can I place an order for OPA4376AIPWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4376AIPWRG4 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 OPA4376AIPWRG4 reliable?
The price and inventory of OPA4376AIPWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4376AIPWRG4 is usually 5 days.
3.What payment methods are accepted for OPA4376AIPWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4376AIPWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4376AIPWRG4?
OPA4376AIPWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4376AIPWRG4 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 OPA4376AIPWRG4?
For technical support, including OPA4376AIPWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4376AIPWRG4 requirements.
6.How does Aetrix verify that OPA4376AIPWRG4 is sourced from the original manufacturer or authorized distributors?
All OPA4376AIPWRG4 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 OPA4376AIPWRG4 meets industry standards.
7.What is the process for return or replacement of OPA4376AIPWRG4?
All OPA4376AIPWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4376AIPWRG4, 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 OPA4376AIPWRG4 part is unused and in its original packaging.
Return procedure for OPA4376AIPWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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