My Inquiry
My Account
Texas Instruments OPA2379AIDRG4
- Part No.:
- OPA2379AIDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2379AIDRG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,091
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA2379AIDRG4 from Texas Instruments is a dual micropower rail-to-rail input/output operational amplifier optimized for battery-powered instrumentation. It delivers 90kHz gain-bandwidth, 2.9µA quiescent current per amplifier, 1.5mV max offset voltage, and operates from 1.8V to 5.5V supply - enabling precision signal conditioning in portable gas meters and handheld medical sensors.
For engineers reviewing the OPA2379AIDRG4 datasheet, OPA2379AIDRG4 pinout, OPA2379AIDRG4 application, or OPA2379AIDRG4 equivalent, key selection criteria include ultra-low power consumption at 1.8V operation, rail-to-rail I/O swing within 10mV of rails (RL = 25kΩ), low 2.8µVPP 0.1Hz–10Hz noise, and guaranteed performance across –40°C to +125°C.
Technical Context
The OPA2379AIDRG4 implements a complementary differential input stage enabling true rail-to-rail common-mode input range (V– – 0.1V to V+ + 0.1V) and output swing to within 10mV of either rail under light load. Its 90kHz GBW and 0.03V/µs slew rate support low-frequency precision sensing without excessive bandwidth-related noise or power penalty.
Designed for single-supply micro-power systems, it achieves 100dB CMRR and PSRR at DC while maintaining 80nV/√Hz wideband noise density - balancing rejection integrity with minimal quiescent current (2.9µA typ at 5.5V). Input bias current remains ≤50pA over temperature, supporting high-impedance sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - enables direct operation from single Li-ion or two alkaline cells without regulation. |
| Quiescent Current | 2.9µA per amplifier (typ at 5.5V) - extends battery life in always-on portable instruments beyond 10 years on CR2032. |
| Offset Voltage | 1.5mV max (over –40°C to +125°C) - ensures <0.3% error in 0–3V sensor output scaling without trimming. |
| Gain-Bandwidth Product | 90kHz - sufficient for DC–10kHz physiological signals and gas sensor transducer outputs with stable unity-gain buffer configuration. |
| Input Voltage Noise | 2.8µVPP (0.1Hz–10Hz) - critical for low-frequency thermopile or strain gauge amplification where 1/f noise dominates. |
| Output Swing | Within 10mV of rails (RL = 25kΩ) - maximizes dynamic range in 1.8V-supplied ADC front-ends with no level-shifting required. |
| CMRR / PSRR | 100dB (DC) - rejects supply ripple and common-mode interference in unshielded wearable sensor nodes. |
Pinout & Package
OPA2379AIDRG4 is packaged in an 8-pin SOIC (D package), 3.9mm × 4.9mm body, RoHS-compliant, with moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | High-impedance node accepting differential signal; biased at VCM = VS/2 in typical single-supply configurations. |
| 2 | Non-Inverting Input (Amplifier A) | Accepts reference or sensor signal; rail-to-rail common-mode range supports direct connection to resistive divider networks. |
| 3 | Output (Amplifier A) | Capable of sourcing/sinking ±5mA; drives 25kΩ loads to within 10mV of supply rails. |
| 4 | Ground / Negative Supply | Reference return for both amplifiers; requires low-impedance local 0.1µF bypass to minimize PSRR degradation. |
| 5 | Non-Inverting Input (Amplifier B) | Independent input for second channel; identical electrical specs to Pin 2 - enables dual-sensor monitoring in one package. |
| 6 | Inverting Input (Amplifier B) | Matches Pin 1 functionality; supports matched dual-channel configurations like instrumentation amp front-ends. |
| 7 | Output (Amplifier B) | Electrically isolated from Output A; allows independent signal paths without crosstalk (typical isolation >100dB). |
| 8 | Positive Supply | Accepts 1.8V–5.5V; quiescent current scales linearly with voltage - enables adaptive power management via supply scaling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 1.8V supply headroom - eliminates need for level-shifting in low-voltage ADC interfaces. |
| 2.9µA quiescent current | Reduces average system power by >50% vs comparable 5µA op amps - critical for multi-year battery life in IoT endpoints. |
| 2.8µVPP 0.1Hz–10Hz noise | Preserves signal integrity in sub-Hz biomedical measurements (e.g., ECG baseline, respiration rate) without post-processing filtering. |
| 1.5mV max offset voltage | Permits DC-coupled sensor interfacing (e.g., thermocouples, pH electrodes) without external nulling circuitry. |
| –40°C to +125°C operation | Validated for automotive cabin modules and industrial field sensors exposed to extended thermal cycling. |
Applications
| Portable Gas Meter | Battery-Powered ECG Monitor |
|---|---|
Use Scenario: Signal conditioning for electrochemical CO sensor with µA-level output current and 100mV full-scale range. IC Role / Device Role / Timing Role: Transimpedance amplifier converting sensor current to voltage, followed by rail-to-rail buffer driving 12-bit SAR ADC. Use Value: 2.9µA IQ enables >5-year operation on AA batteries; 1.5mV VOS limits calibration drift to <0.15% FS over lifetime. | Use Scenario: Amplifying low-amplitude (<1mV), low-frequency (<100Hz) biopotential signals from dry electrodes in wearable patch. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier gain block with matched dual channels for common-mode rejection. Use Value: 2.8µVPP 0.1Hz–10Hz noise preserves ST-segment morphology; rail-to-rail output avoids clipping during R-wave peaks. |
| Handheld Insulin Pump Sensor Interface | Low-Power Environmental Data Logger |
Use Scenario: Conditioning analog output from integrated pressure and temperature sensors in closed-loop dosing control. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one channel for pressure bridge, one for RTD linearization. Use Value: Dual architecture reduces PCB area by 40% vs discrete solutions; 100dB CMRR rejects motor drive noise coupling into analog path. | Use Scenario: Analog front-end for soil moisture and ambient light sensing in solar-powered agricultural node. IC Role / Device Role / Timing Role: Low-power sensor interface amplifier feeding ultra-low-power MCU with integrated 10-bit ADC. Use Value: 1.8V minimum supply allows direct connection to buck-boost converter output; 50pA IB enables >10MΩ sensor impedance compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2242IDR | Higher 5.5µA IQ, 5.5kHz GBW, 0.6mV VOS max - trades bandwidth for lower offset. | Better for DC-stable sensor bridges requiring <0.1% linearity; unsuitable for >1kHz signal content. | Select TLV2242IDR when offset-critical DC accuracy outweighs bandwidth and power needs. |
| OPA2347UA | 20µA IQ, 350kHz GBW, 2mV VOS max - higher speed and power, wider supply (2.3V–5.5V). | Suited for active filters or multi-pole anti-aliasing where phase margin and settling time matter more than battery life. | Choose OPA2347UA when system requires >100kHz closed-loop bandwidth and can tolerate 7× higher quiescent current. |
Compared with TLV2242IDR and OPA2347UA, the OPA2379AIDRG4 uniquely balances sub-3µA power, 90kHz bandwidth, and rail-to-rail I/O in a single SOIC-8 package - making it optimal for space-constrained, multi-year battery applications demanding both precision and responsiveness.
Availability
OPA2379AIDRG4 is available at Aetrix Electronics and suitable for portable medical devices, handheld test equipment, and battery-powered environmental sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2379AIDRG4 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 amp design and low-power signal chain innovation.
The OPA379 family - including OPA2379AIDRG4 - was engineered specifically for ultra-low-power, high-precision analog signal acquisition in energy-constrained portable and remote sensing systems.
FAQ
What is the maximum operating temperature range for the OPA2379AIDRG4?
The OPA2379AIDRG4 is fully specified and tested from –40°C to +125°C. This extended temperature range is validated per TI's production test flow and supports deployment in automotive cabin modules, industrial field sensors, and outdoor environmental monitors without derating.
Does the OPA2379AIDRG4 support true rail-to-rail input and output operation?
Yes, the OPA2379AIDRG4 supports rail-to-rail input common-mode range (V– – 0.1V to V+ + 0.1V) and rail-to-rail output swing (within 10mV of either rail with RL = 25kΩ). This capability is confirmed in the Electrical Characteristics table and Typical Characteristics curves of the SBOS347D datasheet.
What is the typical quiescent current of the OPA2379AIDRG4 at 1.8V supply?
At VS = 1.8V and TA = +25°C, the OPA2379AIDRG4 draws 2.9µA per amplifier (typical), as shown in Figure 5 (Quiescent Current vs Supply Voltage). This value increases to 5.5µA max across temperature and process variation, ensuring predictable low-power behavior in battery-sensitive designs.
Can the OPA2379AIDRG4 drive capacitive loads without instability?
The OPA2379AIDRG4 exhibits stable unity-gain operation with up to 30pF capacitive load. For loads exceeding 30pF, TI recommends adding a 10Ω–20Ω series resistor (RS) between output and load (Figure 21), which suppresses ringing while preserving DC accuracy - a technique validated in the SBOS347D Typical Characteristics section.
Is the OPA2379AIDRG4 pin-compatible with other members of the OPA379 family?
OPA2379AIDRG4 uses the standard SOIC-8 pinout defined for dual op amps (Pins 1–4 for Amp A, Pins 5–8 for Amp B). It is pin-compatible with OPA2379AID, OPA2379AIDR, and OPA2379AIDG4 - all share identical D-package marking "2379A" and functional pin mapping per TI's Package Drawing D.
OPA2379AIDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.03V/µs
- Gain Bandwidth Product:
- 90 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 2.9µA (x2 Channels)
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 1.8 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
OPA2379AIDRG4 FAQ
1.How can I place an order for OPA2379AIDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2379AIDRG4 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 OPA2379AIDRG4 reliable?
The price and inventory of OPA2379AIDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2379AIDRG4 is usually 5 days.
3.What payment methods are accepted for OPA2379AIDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2379AIDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2379AIDRG4?
OPA2379AIDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2379AIDRG4 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 OPA2379AIDRG4?
For technical support, including OPA2379AIDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2379AIDRG4 requirements.
6.How does Aetrix verify that OPA2379AIDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA2379AIDRG4 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 OPA2379AIDRG4 meets industry standards.
7.What is the process for return or replacement of OPA2379AIDRG4?
All OPA2379AIDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2379AIDRG4, 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 OPA2379AIDRG4 part is unused and in its original packaging.
Return procedure for OPA2379AIDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2379AIDRG4 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…
