My Inquiry
My Account
Texas Instruments OPA376AIDRG4
- Part No.:
- OPA376AIDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA376AIDRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,115
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA376AIDRG4 from Texas Instruments is a precision rail-to-rail input/output operational amplifier optimized for low-noise, low-quiescent-current signal conditioning in battery-powered and high-resolution data acquisition systems. It delivers 7.5 nV/√Hz input voltage noise at 1 kHz, 5 μV typical offset voltage, 5.5 MHz gain-bandwidth product, and operates from 2.2 V to 5.5 V single supply - enabling high-accuracy ADC buffering in portable medical sensors and handheld test equipment.
For engineers reviewing the OPA376AIDRG4 datasheet, OPA376AIDRG4 pinout, OPA376AIDRG4 application, or OPA376AIDRG4 equivalent, key selection criteria include its e-trim™-enabled dc precision (25 μV max offset), 760 μA typical quiescent current, 0.8 μVPP 0.1–10 Hz noise, rail-to-rail swing within 20 mV of rails (at 10 kΩ load), and stability with up to 250 pF capacitive loads in unity-gain configuration.
Technical Context
The OPA376AIDRG4 employs CMOS input stage architecture with TI's e-trim™ technology for factory-trimmed offset and drift compensation, achieving 0.26 μV/°C typical dVOS/dT over –40°C to +85°C. Its internal compensation ensures unity-gain stability without external components.
It features rail-to-rail input common-mode range extending 100 mV beyond supply rails and rail-to-rail output swing limited only by 20 mV (typ) headroom at 10 kΩ load - supporting direct interfacing with SAR ADCs like ADS8327 and precision sensor front-ends requiring full-scale dynamic range utilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5.5 MHz - supports stable closed-loop operation up to 100 kHz with gain ≥ 55, suitable for anti-aliasing filters ahead of 1 MSPS ADCs. |
| Input Offset Voltage | 5 μV (typ), 25 μV (max) - enables sub-16-bit error floor in 24-bit+ converter interfaces without calibration. |
| Voltage Noise Density | 7.5 nV/√Hz at 1 kHz - contributes <1.5 μVRMS integrated noise in 100 kHz bandwidth, critical for low-level sensor amplification. |
| Quiescent Current | 760 μA (typ), 950 μA (max) - allows continuous operation >1000 hours on a 1000 mAh coin cell in portable instrumentation. |
| Supply Voltage Range | 2.2 V to 5.5 V - directly powers from single Li-ion, two alkaline, or regulated 3.3 V/5 V rails without LDO overhead. |
| Input Voltage Noise (0.1–10 Hz) | 0.8 μVPP - minimizes baseline drift in DC-coupled ECG, strain gauge, and thermopile signal chains. |
| Common-Mode Rejection Ratio | 76 dB (min), 90 dB (typ) - rejects power-supply ripple and shared-impedance noise in single-supply mixed-signal PCB layouts. |
Pinout & Package
OPA376AIDRG4 is packaged in an 8-pin SOIC (D package) with nominal body size 4.90 mm × 3.91 mm, optimized for thermal performance (RθJA = 100.1°C/W) and board-level manufacturability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 3) | Non-inverting input | Accepts signals from 100 mV below V– to 100 mV above V+, enabling true rail-to-rail input operation in single-supply configurations. |
| –IN (Pin 2) | Inverting input | Differential pair input node; high impedance (>1013 Ω) and low bias current (0.2 pA typ) preserve source signal integrity. |
| OUT (Pin 6) | Amplifier output | Drives loads down to 2 kΩ while maintaining rail-to-rail swing (≤40 mV from rails at 25°C, 10 kΩ). |
| V+ (Pin 7) | Positive supply | Accepts 2.2 V to 5.5 V; PSRR of 5 μV/V (typ) suppresses supply ripple across full operating range. |
| V– (Pin 4) | Negative supply / ground reference | Serves as return path for input/output currents; supports true single-supply operation when tied to system ground. |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ precision trimming | Factory-laser-trimmed offset and drift ensure 5 μV typical VOS and 0.26 μV/°C dVOS/dT - eliminates need for external nulling circuitry in production systems. |
| Rail-to-rail I/O | Input common-mode extends (V–) – 0.1 V to (V+) + 0.1 V; output swings within 20 mV of rails at 10 kΩ - maximizes dynamic range in 3.3 V or lower supply systems. |
| Capacitive load drive | Stable with up to 250 pF pure capacitive load in unity-gain buffer configuration - simplifies ADC driver design without isolation resistors in most cases. |
| Low 1/f noise | 0.8 μVPP integrated noise over 0.1–10 Hz - critical for DC-stable amplification of thermocouples, RTDs, and bridge sensors. |
| ESD robustness | ±4000 V HBM, ±1000 V CDM - withstands handling and board-level ESD events without latch-up or parameter shift. |
Applications
| ADC Buffer | Medical Instrumentation |
|---|---|
Use Scenario: Driving the analog input of a 16-bit SAR ADC (e.g., ADS8327) in a portable blood glucose meter. IC Role / Device Role / Timing Role: Precision voltage follower providing low-impedance, low-noise, rail-to-rail buffered signal to ADC sample-and-hold capacitor. Use Value: 7.5 nV/√Hz noise and 5 μV offset prevent quantization errors; 5.5 MHz GBW settles 2-V step in 2 μs (0.01%), ensuring accurate sampling at 500 kSPS. | Use Scenario: Amplifying microvolt-level ECG signals in a wearable Holter monitor. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier gain block with high CMRR and ultra-low 1/f noise. Use Value: 0.8 μVPP 0.1–10 Hz noise preserves ST-segment morphology; 760 μA IQ enables >7-day battery life on CR2032. |
| Handheld Test Equipment | Active Filtering |
Use Scenario: Input signal conditioning in a battery-powered digital multimeter measuring µA–mA currents via shunt resistor. IC Role / Device Role / Timing Role: Low-drift transimpedance amplifier converting shunt voltage to digitized current reading. Use Value: 25 μV max offset ensures <0.1% full-scale error at 100 mV shunt drop; rail-to-rail output accommodates wide measurement ranges without level-shifting. | Use Scenario: Second-order Butterworth anti-aliasing filter preceding a 24-bit delta-sigma ADC in industrial temperature transmitters. IC Role / Device Role / Timing Role: Unity-gain stable active filter stage with precise cutoff at 50 kHz. Use Value: 5.5 MHz GBW and 2 V/μs slew rate maintain phase linearity and step response fidelity; 250 pF capacitive load tolerance eliminates need for output isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Zero-drift architecture; 0.1 μV max offset, 0.02 μV/°C drift; higher 17 μA IQ; 350 kHz GBW. | Better dc accuracy for ultra-low-drift applications; insufficient bandwidth for >100 kHz filtering or fast ADC driving. | Select OPA333AIDBVR only when sub-μV offset stability over temperature is mandatory and bandwidth ≤350 kHz suffices. |
| ADA4522-1ARZ | Zero-drift; 2.5 μV max offset, 0.015 μV/°C drift; 1.2 mA IQ; 3 MHz GBW; higher cost. | Superior long-term drift performance for metrology-grade instruments; excessive power draw for portable devices. | Choose ADA4522-1ARZ for lab-grade calibration equipment where power is unconstrained and drift must be <10 nV/°C over 10 years. |
Compared with OPA333AIDBVR and ADA4522-1ARZ, the OPA376AIDRG4 uniquely balances 5.5 MHz bandwidth, 760 μA quiescent current, and 5 μV offset - making it optimal for portable, high-speed precision signal chains where zero-drift overhead is unnecessary.
Availability
OPA376AIDRG4 is available at Aetrix Electronics and suitable for portable medical devices, handheld test equipment, and high-resolution data acquisition systems requiring stable component supply across extended production lifecycles.
Supply support for OPA376AIDRG4 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 delivering analog and embedded processing solutions, with leadership in precision analog ICs and broad portfolio coverage from design through manufacturing.
The OPA376AIDRG4 belongs to TI's e-trim™ precision op-amp product line, engineered specifically for battery-powered, high-resolution sensing and data conversion applications demanding low noise, low power, and rail-to-rail performance in compact packages.
FAQ
What is the maximum capacitive load the OPA376AIDRG4 can drive stably in unity-gain configuration?
The OPA376AIDRG4 is specified to drive up to 250 pF of pure capacitive load stably in unity-gain buffer configuration. This capability eliminates the need for output isolation resistors in many ADC driver applications. For loads exceeding 250 pF, a small series resistor (10–20 Ω) between the OPA376AIDRG4 output and the capacitive load restores stability while preserving dc accuracy - though resistive parallel loads introduce minor gain error proportional to RS/RL.
Does the OPA376AIDRG4 support true single-supply operation with rail-to-rail input and output?
Yes, the OPA376AIDRG4 supports true single-supply operation: its input common-mode voltage range extends from (V–) – 0.1 V to (V+) + 0.1 V, and its output swings within 20 mV of both rails under 10 kΩ load at 25°C. This enables direct interfacing with 3.3 V or 5 V microcontrollers and ADCs without level-shifting circuitry - a key advantage for space-constrained portable designs using the OPA376AIDRG4.
What is the typical quiescent current of the OPA376AIDRG4 and how does it vary with supply voltage?
The OPA376AIDRG4 draws 760 μA typical quiescent current at 5.5 V supply, rising slightly to ~950 μA maximum across –40°C to +125°C. Over the full 2.2 V to 5.5 V operating range, IQ remains stable within ±10% - confirmed by Figure 9 in the SBOS406G datasheet. This consistent low power draw makes the OPA376AIDRG4 ideal for always-on sensor nodes where battery longevity is critical.
How does the e-trim™ technology in the OPA376AIDRG4 improve long-term performance stability?
e-trim™ technology in the OPA376AIDRG4 uses laser trimming during final test to adjust internal offset and drift parameters, achieving 5 μV typical input offset voltage and 0.26 μV/°C typical drift over –40°C to +85°C. Unlike auto-zero or chopper amplifiers, e-trim™ avoids switching artifacts and 1/f noise modulation - delivering clean, continuous-time precision that maintains stability over time and temperature without introducing digital interference into sensitive analog signals processed by the OPA376AIDRG4.
Is the OPA376AIDRG4 pin-compatible with other members of the OPA376 family such as OPA376AIDBVR or OPA376AIDR?
Yes, the OPA376AIDRG4 shares identical pinout and electrical specifications with other SOIC-8 variants in the OPA376 family, including OPA376AIDBVR and OPA376AIDR. All are functionally interchangeable in PCB layouts designed for the D-package footprint. The 'G4' suffix denotes TI's green packaging standard (lead-free, RoHS-compliant), with no impact on pin assignment, timing, or dc performance - allowing seamless substitution in existing designs using the OPA376AIDRG4.
OPA376AIDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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
- 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:
- 8-SOIC
OPA376AIDRG4 FAQ
1.How can I place an order for OPA376AIDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA376AIDRG4 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 OPA376AIDRG4 reliable?
The price and inventory of OPA376AIDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA376AIDRG4 is usually 5 days.
3.What payment methods are accepted for OPA376AIDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA376AIDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA376AIDRG4?
OPA376AIDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA376AIDRG4 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 OPA376AIDRG4?
For technical support, including OPA376AIDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA376AIDRG4 requirements.
6.How does Aetrix verify that OPA376AIDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA376AIDRG4 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 OPA376AIDRG4 meets industry standards.
7.What is the process for return or replacement of OPA376AIDRG4?
All OPA376AIDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA376AIDRG4, 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 OPA376AIDRG4 part is unused and in its original packaging.
Return procedure for OPA376AIDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA376AIDRG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
