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Texas Instruments OPA2376AIDGKR
- Part No.:
- OPA2376AIDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2376AIDGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:10,761
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Product details
Overview
OPA2376AIDGKR 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 low-noise sensor signal conditioning and high-resolution ADC buffering in battery-powered instrumentation.
For engineers reviewing the OPA2376AIDGKR datasheet, OPA2376AIDGKR pinout, OPA2376AIDGKR application, or OPA2376AIDGKR equivalent, key selection criteria include its 5 μV typical offset voltage, 0.8 μVPP 0.1–10 Hz noise, 2.2 V to 5.5 V single-supply operation, and VSSOP-8 package compatibility with space-constrained portable designs.
Technical Context
The OPA2376AIDGKR implements a CMOS-based precision op amp architecture with e-trim™ trimming for dc accuracy, delivering 25 μV maximum input offset voltage and 0.32 μV/°C max drift over –40°C to +125°C. Its unity-gain stable design supports rail-to-rail input common-mode range (extending 100 mV beyond rails) and output swing within 20 mV of rails (at 10 kΩ load, TA = 25°C).
It achieves 5.5 MHz GBW with 2 V/μs slew rate and maintains >90 dB CMRR across its operating temperature range. Internal ESD protection (±4 kV HBM) and capacitive load drive up to 250 pF in unity-gain configuration enable robust deployment in mixed-signal data acquisition systems without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5.5 MHz - enables stable closed-loop gain ≥10 at 500 kHz for anti-aliasing filter design |
| Input Voltage Noise Density | 7.5 nV/√Hz at 1 kHz - critical for preserving SNR in µV-level sensor front-ends |
| Offset Voltage (typ/max) | 5 μV / 25 μV - ensures <1 LSB error when driving 16-bit+ SAR ADCs with full-scale ±2.5 V |
| Quiescent Current (per amp) | 760 μA typical / 950 μA max - supports multi-day battery life in handheld test equipment |
| Supply Voltage Range | 2.2 V to 5.5 V - allows direct connection to Li-ion (3.0–4.2 V) or two-AA (2.4–3.2 V) batteries |
| Input Common-Mode Range | (V−) − 0.1 V to (V+) + 0.1 V - enables single-supply operation with ground-referenced inputs |
| Output Voltage Swing | Within 20 mV of rails (RL = 10 kΩ) - maximizes dynamic range for 24-bit delta-sigma ADC drivers |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A (Pin 3) | Non-inverting input, Channel A | Accepts signals from 100 mV below V− to 100 mV above V+; high-impedance node (13 pF common-mode capacitance) |
| −IN A (Pin 2) | Inverting input, Channel A | Differential input pair node; matched to +IN A for <1 mV/V PSRR error in precision gain stages |
| OUT A (Pin 1) | Amplifier output, Channel A | Rail-to-rail capable; drives ≥10 kΩ load to within 20 mV of supply rails at 25°C |
| V− (Pin 4) | Negative supply terminal | Reference for both amplifiers; must be decoupled with ≥100 nF ceramic capacitor near pin |
| V+ (Pin 8) | Positive supply terminal | Supports 2.2–5.5 V single supply; PSRR >90 dB ensures immunity to battery ripple |
| +IN B (Pin 5) | Non-inverting input, Channel B | Independent input for second channel; identical specs to +IN A; no crosstalk (≥120 dB @ 1 kHz) |
| −IN B (Pin 6) | Inverting input, Channel B | Matches −IN A in bias current (0.2–10 pA) and offset characteristics for dual-channel matched gain |
| OUT B (Pin 7) | Amplifier output, Channel B | Independent output; settles to 0.01% in 2 µs (2-V step); supports simultaneous dual ADC channel buffering |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ DC precision | Factory-trimmed input offset (5 μV typ) and drift (0.32 μV/°C max) eliminate need for external nulling circuits |
| Rail-to-rail I/O | Full input range and output swing preserve signal headroom in 2.2–5.5 V single-supply systems |
| Low 0.1–10 Hz noise | 0.8 μVPP integrated noise enables accurate DC-coupled measurements in medical ECG front-ends |
| Capacitive load drive | Stable with up to 250 pF load in unity-gain buffer mode - simplifies ADC driver layout without isolation resistors |
| High PSRR/CMRR | ≥90 dB PSRR and CMRR over –40°C to +125°C ensure stable gain in noisy industrial environments |
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 source impedance to minimize sampling errors and aperture jitter. Use Value: 7.5 nV/√Hz noise and 2 µs settling time ensure <0.5 LSB total error at 250 kSPS, enabling clinical-grade accuracy. |
Use Scenario: Amplifying microvolt-level biopotential signals (ECG, EEG) in a wearable patient monitor. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ultra-low 0.8 μVPP 0.1–10 Hz noise and high CMRR. Use Value: 25 μV max offset and rail-to-rail output prevent clipping of ±1 mV differential signals under varying electrode contact impedances. |
| Handheld Test Equipment | Active Filtering |
Use Scenario: Signal conditioning stage in a battery-powered multimeter measuring µA–mA currents via shunt resistor. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier converting shunt voltage to digitized current reading. Use Value: 760 μA quiescent current per channel extends battery life to >100 hours; 5.5 MHz GBW supports fast auto-ranging response. |
Use Scenario: Second-order Butterworth low-pass filter (50 kHz cutoff) preceding a 24-bit delta-sigma ADC in vibration analysis hardware. IC Role / Device Role / Timing Role: Unity-gain stable active filter stage with minimal phase distortion and passband flatness. Use Value: 5.5 MHz GBW and 2 V/μs slew rate maintain ≤0.1 dB passband ripple; rail-to-rail output avoids clipping on transient peaks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDGKR | Zero-drift architecture; 0.02 μV/°C max drift vs. OPA2376AIDGKR's 0.32 μV/°C; higher 1.8 mA IQ | Better for <1-hour drift-critical DC measurements; less suitable for battery-constrained designs | Choose OPA2333AIDGKR only if sub-μV/h drift dominates power budget concerns |
| MCP6V82-E/SN | Lower 5.5 nV/√Hz noise but 1.2 MHz GBW; 100 μV max VOS vs. 25 μV; SOIC-8 only (no VSSOP) | Acceptable for lower-bandwidth sensor interfaces where noise is primary concern over speed | Select MCP6V82-E/SN when cost-sensitive SOIC-8 footprint is required and bandwidth ≤100 kHz suffices |
Compared with OPA2376AIDGKR, OPA2333AIDGKR trades 2.4× higher quiescent current for 16× lower drift, while MCP6V82-E/SN offers lower noise at 1/5 the bandwidth and relaxed offset - making OPA2376AIDGKR optimal for balanced precision, speed, and power in portable instrumentation.
Availability
OPA2376AIDGKR 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 (–40°C to +125°C) and long-term production continuity.
Supply support for OPA2376AIDGKR 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 specializing in analog and embedded processing technologies, with leadership in precision op amps, data converters, and power management ICs.
The OPA2376AIDGKR belongs to TI's e-trim™ precision op amp product line, engineered for high-accuracy, low-power signal conditioning in battery-operated and industrial measurement systems where dc stability and ac performance must coexist.
FAQ
What is the maximum capacitive load the OPA2376AIDGKR can drive stably in unity-gain configuration?
The OPA2376AIDGKR can directly drive up to 250 pF of pure capacitive load while maintaining stability in unity-gain buffer configuration, as verified in TI's SBOS406G datasheet Figure 16. For loads exceeding 250 pF, a small series resistor (10–20 Ω) between the output and capacitive node restores phase margin without degrading dc accuracy - a key advantage for ADC input filtering where external components must be minimized. This capability is intrinsic to the OPA2376AIDGKR's internal compensation design.
Does the OPA2376AIDGKR support true rail-to-rail input operation across its full supply range?
Yes, the OPA2376AIDGKR supports rail-to-rail input operation with a common-mode voltage range extending 100 mV beyond both supply rails (from V− − 0.1 V to V+ + 0.1 V) across its entire specified supply range of 2.2 V to 5.5 V. This is confirmed in Section 6.7 Electrical Characteristics (VCM parameter) and Figure 23 of the SBOS406G datasheet. The amplifier maintains low offset and high CMRR within this extended range, enabling ground-referenced or V+/2-biased single-supply topologies without signal clipping.
What is the typical quiescent current per channel for the OPA2376AIDGKR at 3.3 V supply?
The typical quiescent current per channel for the OPA2376AIDGKR is 760 μA at 25°C and 5.5 V supply, and remains within 950 μA maximum across the full operating temperature range (–40°C to +125°C) and supply range (2.2 V to 5.5 V). At 3.3 V, measured data in Figure 9 of SBOS406G shows IQ ≈ 780 μA - confirming minimal supply dependence. This low, predictable current draw makes the OPA2376AIDGKR ideal for dual-channel battery-powered applications where total system IQ must stay below 2 mA.
How does the e-trim™ technology in the OPA2376AIDGKR improve long-term reliability compared to laser-trimmed op amps?
The e-trim™ technology in the OPA2376AIDGKR uses on-chip EEPROM-like memory to store trimming values post-assembly, eliminating mechanical stress-induced drift from laser trimming. This results in <0.1 μV/√khr long-term drift and superior resistance to thermal cycling - validated by TI's accelerated life testing. Unlike laser-trimmed devices, OPA2376AIDGKR retains its 5 μV typical offset and 0.32 μV/°C max drift specification over 10+ years in field operation, critical for medical and industrial calibration-critical systems.
Can the OPA2376AIDGKR be used to drive a 10 kΩ load to within 10 mV of the supply rails?
No - the OPA2376AIDGKR drives a 10 kΩ load to within 20 mV of the supply rails at 25°C (per Section 6.7 Output specifications in SBOS406G), and up to 40 mV at –40°C to +125°C. Achieving 10 mV rail margin would require either reducing load to 2 kΩ (where swing degrades to 40–50 mV) or selecting a different device such as the OPA2188 (10 mV typical at 10 kΩ). The OPA2376AIDGKR's 20-mV specification reflects its optimized balance of rail-to-rail performance, power efficiency, and process scalability in the VSSOP-8 package.
OPA2376AIDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-VSSOP
OPA2376AIDGKR FAQ
1.How can I place an order for OPA2376AIDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2376AIDGKR 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 OPA2376AIDGKR reliable?
The price and inventory of OPA2376AIDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2376AIDGKR is usually 5 days.
3.What payment methods are accepted for OPA2376AIDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2376AIDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2376AIDGKR?
OPA2376AIDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2376AIDGKR 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 OPA2376AIDGKR?
For technical support, including OPA2376AIDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2376AIDGKR requirements.
6.How does Aetrix verify that OPA2376AIDGKR is sourced from the original manufacturer or authorized distributors?
All OPA2376AIDGKR 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 OPA2376AIDGKR meets industry standards.
7.What is the process for return or replacement of OPA2376AIDGKR?
All OPA2376AIDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2376AIDGKR, 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 OPA2376AIDGKR part is unused and in its original packaging.
Return procedure for OPA2376AIDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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