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Texas Instruments OPA2376AIDR
- Part No.:
- OPA2376AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2376AIDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:14,284
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Product details
Overview
OPA2376AIDR from Texas Instruments is a dual-channel, rail-to-rail input/output precision operational amplifier featuring e-trim™ technology, 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 instrumentation.
For engineers reviewing the OPA2376AIDR datasheet, OPA2376AIDR pinout, OPA2376AIDR application, or OPA2376AIDR equivalent, key selection criteria include its 5 μV typical offset voltage, 0.8 μVPP 0.1–10 Hz noise, ±1.1 V to ±2.75 V (2.2–5.5 V) supply range, and SOIC-8 package compatibility with space-constrained analog front-ends requiring dc precision and ac fidelity.
Technical Context
The OPA2376AIDR implements a CMOS-based e-trim architecture that actively compensates for input offset voltage and drift during final test, achieving 5 μV typical VOS and 0.26 μV/°C max drift over –40°C to +85°C. Its unity-gain stable design supports direct capacitive load drive up to 250 pF without external compensation.
Internally, it features rail-to-rail input stage with 100 mV beyond rails common-mode range and rail-to-rail output swing within 20 mV of rails (at 10 kΩ, 25°C), enabling full-scale signal utilization in single-supply systems operating down to 2.2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5.5 MHz - supports stable closed-loop operation up to 100 kHz with ≥10× phase margin in G = 1 configuration |
| Input Voltage Noise Density | 7.5 nV/√Hz at 1 kHz - enables <1 μVRMS integrated noise in 10 kHz bandwidth, critical for 16-bit+ ADC drivers |
| Offset Voltage (typ) | 5 μV - reduces dc error to <0.01% of full-scale in 50 mV span applications like strain gauge amplification |
| Quiescent Current (per amp) | 760 μA - allows dual-channel precision amplification in sub-2 mA total system analog supply budgets |
| Supply Voltage Range | 2.2 V to 5.5 V - operates directly from single Li-ion cell (3.0–4.2 V) or regulated 3.3 V/5 V rails without LDO overhead |
| Input Common-Mode Range | (V–) – 0.1 V to (V+) + 0.1 V - accepts signals beyond supply rails, simplifying level-shifting in mixed-voltage sensor interfaces |
| Output Swing (RL = 10 kΩ) | Within 20 mV of rails (25°C) - preserves >99.6% dynamic range in 3.3 V systems, minimizing headroom loss |
Pinout & Package
OPA2376AIDR is housed in an 8-pin SOIC package (4.90 mm × 3.91 mm body size) with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 20 mA short-circuit current; rail-to-rail swing enables full-scale signal delivery |
| 2 | –IN A | Inverting input A - high-impedance node (13 pF common-mode capacitance); requires guarding in high-Z sensor paths |
| 3 | +IN A | Non-inverting input A - matched to –IN A for optimal CMRR; 0.2 pA bias current minimizes resistor-induced offset |
| 4 | V– | Negative supply - connects to ground in single-supply use; must be decoupled with 100 nF ceramic near pin |
| 5 | V+ | Positive supply - accepts 2.2–5.5 V; PSRR > 90 dB ensures immunity to digital supply noise coupling |
| 6 | +IN B | Non-inverting input B - electrically isolated from Channel A; supports independent dual-sensor conditioning |
| 7 | –IN B | Inverting input B - identical specs to –IN A; channel separation > 100 dB at 1 kHz prevents crosstalk in multi-channel data acquisition |
| 8 | OUT B | Amplifier B output - independently buffered; no internal connection between OUT A and OUT B |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ DC precision | 5 μV typical offset voltage trimmed at wafer/test level - eliminates need for external nulling circuitry in production calibration |
| Rail-to-rail I/O | Input extends 100 mV beyond supplies; output swings to within 20 mV - maximizes usable dynamic range in 3.3 V systems |
| Low 0.1–10 Hz noise | 0.8 μVPP - critical for dc-stable medical instrumentation (ECG, EEG) where baseline wander degrades diagnosis |
| Capacitive load drive | Stable with ≤250 pF pure capacitive load at unity gain - enables direct connection to ADC input capacitance without isolation resistor |
| High PSRR & CMRR | 90 dB PSRR and 90 dB CMRR (min) - rejects power rail ripple and common-mode interference in noisy industrial environments |
Applications
| ADC Buffer | Medical Instrumentation |
|---|---|
Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., ADS8327) in portable data loggers. IC Role / Device Role / Timing Role: Precision voltage buffer isolating high-impedance sensor sources from ADC sampling capacitor kickback. Use Value: 7.5 nV/√Hz noise and 5.5-MHz GBW ensure <0.5 LSB noise contribution and <2 μs settling to 0.01%, preserving ENOB. | Use Scenario: Amplifying low-level biopotential signals (ECG, EMG) in handheld patient monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with ultra-low 0.8 μVPP 0.1–10 Hz noise and rail-to-rail output for full-scale digitization. Use Value: 5 μV offset and 0.26 μV/°C drift minimize baseline drift across body temperature variations, improving diagnostic accuracy. |
| Handheld Test Equipment | Sensor Signal Conditioning |
Use Scenario: Front-end gain stage in battery-powered multimeters and oscilloscope probes. IC Role / Device Role / Timing Role: Low-power, high-precision amplifier supporting autoranging and auto-zero functions. Use Value: 760 μA quiescent current per channel enables >100 hours of operation on two AA cells while maintaining 16-bit linearity. | Use Scenario: Conditioning outputs from MEMS accelerometers and RTD temperature sensors in IoT edge nodes. IC Role / Device Role / Timing Role: Dual-channel signal conditioner providing simultaneous excitation and measurement paths. Use Value: Dual SOIC layout reduces PCB area vs discrete singles; matched channels enable ratiometric measurements with <0.005% gain error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 0.02 μV/°C drift vs OPA2376AIDR's 0.26 μV/°C; higher 17 μA IQ | Better for <0.1°C temperature sensing; less suitable for battery life-critical portable devices | Select OPA2333AIDR when ultra-low drift dominates over power; choose OPA2376AIDR for balanced noise/power/precision |
| AD8605ARZ-REEL7 | Lower 5.5 nV/√Hz noise; 1.2 mA IQ; no e-trim - 25 μV max VOS vs OPA2376AIDR's 25 μV max | Higher power budget acceptable; requires external trimming for sub-10 μV offset | Prefer AD8605ARZ-REEL7 for lowest noise in mains-powered lab equipment; retain OPA2376AIDR for battery-operated field instruments |
Compared with OPA2333AIDR and AD8605ARZ-REEL7, OPA2376AIDR delivers the optimal trade-off of 7.5 nV/√Hz noise, 760 μA IQ, and 5 μV typical offset - making it uniquely suited for dual-channel, battery-powered precision signal chains where runtime, accuracy, and simplicity must coexist.
Availability
OPA2376AIDR is available at Aetrix Electronics and suitable for medical instrumentation, handheld test equipment, and sensor signal conditioning requiring stable component supply across extended temperature ranges (–40°C to +125°C).
Supply support for OPA2376AIDR 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, power management, and signal chain technologies.
The OPA2376AIDR belongs to TI's e-trim™ precision op-amp product line, engineered specifically for high-resolution data acquisition systems demanding low noise, low power, and guaranteed dc accuracy without external calibration.
FAQ
What is the maximum capacitive load the OPA2376AIDR can drive stably in unity-gain configuration?
The OPA2376AIDR is specified to drive up to 250 pF of pure capacitive load stably in unity-gain configuration without external compensation. This capability is validated per TI's SBOS406G datasheet Figure 16. Exceeding this value may reduce phase margin and induce ringing or oscillation; for larger loads, a series 10–20 Ω resistor at the output is recommended to restore stability while preserving dc accuracy in the OPA2376AIDR design.
Does the OPA2376AIDR support true rail-to-rail input and output operation?
Yes, the OPA2376AIDR supports rail-to-rail input with common-mode voltage range extending 100 mV beyond both supply rails (V– – 0.1 V to V+ + 0.1 V), and rail-to-rail output with swing to within 20 mV of each rail under 10 kΩ load at 25°C. These specifications are confirmed in Section 6.7 of the SBOS406G datasheet, enabling full dynamic range utilization in single-supply 3.3 V systems - a core design feature of the OPA2376AIDR.
What is the typical quiescent current per amplifier in the OPA2376AIDR?
The OPA2376AIDR draws 760 μA typical quiescent current per amplifier at 5.5 V supply and 25°C, with a maximum of 950 μA over temperature. This value is explicitly stated in the "Features" section and Table 6.7 of the SBOS406G datasheet. The low IQ enables dual-channel precision amplification in battery-powered applications where total analog supply current must remain below 2 mA - a defining characteristic of the OPA2376AIDR.
How does the e-trim™ technology in the OPA2376AIDR improve dc performance?
e-trim™ is TI's proprietary wafer-level trimming process that adjusts internal device parameters during final test to minimize input offset voltage and drift. For the OPA2376AIDR, this yields 5 μV typical VOS and 0.26 μV/°C max drift over –40°C to +85°C - eliminating post-assembly calibration. Unlike chopper-stabilized amps, e-trim™ avoids switching artifacts, preserving the OPA2376AIDR's 7.5 nV/√Hz noise and clean small-signal response.
Is the OPA2376AIDR suitable for driving SAR ADC inputs directly?
Yes, the OPA2376AIDR is explicitly designed for SAR ADC driving, as confirmed in the "Applications" section and Figure 27 of SBOS406G. Its 5.5-MHz GBW, 2 V/μs slew rate, 0.8 μVPP 0.1–10 Hz noise, and ability to settle to 0.01% in 2 μs make it ideal for buffering 16-bit+ converters like the ADS8327. The OPA2376AIDR's rail-to-rail output ensures full-scale signal delivery into the ADC's sampling capacitor without headroom loss.
OPA2376AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 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:
- 8-SOIC
OPA2376AIDR FAQ
1.How can I place an order for OPA2376AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2376AIDR 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 OPA2376AIDR reliable?
The price and inventory of OPA2376AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2376AIDR is usually 5 days.
3.What payment methods are accepted for OPA2376AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2376AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2376AIDR?
OPA2376AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2376AIDR 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 OPA2376AIDR?
For technical support, including OPA2376AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2376AIDR requirements.
6.How does Aetrix verify that OPA2376AIDR is sourced from the original manufacturer or authorized distributors?
All OPA2376AIDR 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 OPA2376AIDR meets industry standards.
7.What is the process for return or replacement of OPA2376AIDR?
All OPA2376AIDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2376AIDR, 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 OPA2376AIDR part is unused and in its original packaging.
Return procedure for OPA2376AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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