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Texas Instruments TLV2379IDR
- Part No.:
- TLV2379IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2379IDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,419
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Product details
Overview
TLV2379IDR from Texas Instruments is a dual, micropower, rail-to-rail input/output operational amplifier optimized for ultra-low-power battery-operated systems. It delivers 4 µA typical quiescent current per channel, 0.8 mV typical input offset voltage, and operates from 1.8 V to 5.5 V single supply - enabling precision signal conditioning in power banks, handheld test equipment, and solar inverter monitoring circuits.
For engineers reviewing the TLV2379IDR datasheet, TLV2379IDR pinout, TLV2379IDR application, or TLV2379IDR equivalent, this page provides verified package mapping (SOIC-8), validated dual-channel pin functions, confirmed operating range (–40°C to +125°C), and two rigorously cross-checked alternative parts with documented functional and application-level differences.
Technical Context
The TLV2379IDR implements a complementary differential input stage enabling rail-to-rail common-mode input range (extending 100 mV beyond each rail) and a class AB output stage delivering rail-to-rail output swing within 25 mV of either supply at 5 kΩ load. Its 90 kHz gain-bandwidth product and 0.03 V/µs slew rate support stable DC-coupled sensing and low-frequency amplification.
It features 5 pA typical input bias current, 83 nV/√Hz input voltage noise density at 1 kHz, and 90 dB minimum open-loop gain - all specified across the full –40°C to +125°C temperature range and validated under 1.8 V to 5.5 V supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V single supply - supports direct integration into Li-ion, coin-cell, and energy-harvesting power domains |
| Quiescent Current | 4 µA per channel typical - enables multi-year operation in always-on sensor nodes |
| Input Offset Voltage | 0.8 mV typical - ensures ≤0.5% error in 12-bit ADC front-end applications at unity gain |
| Gain-Bandwidth Product | 90 kHz - sufficient for anti-aliasing, battery voltage monitoring, and thermistor signal conditioning |
| Input Bias Current | ±5 pA typical - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiodes) |
| Common-Mode Range | (V−) − 0.1 V to (V+) + 0.1 V - allows direct sensing of signals referenced to ground or supply rails |
| Output Swing | Within 25 mV of rails at 5 kΩ - preserves dynamic range in low-voltage microcontroller ADC interfaces |
Pinout & Package
TLV2379IDR is housed in an 8-pin SOIC package (body size 4.90 mm × 3.91 mm) with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT_A (Pin 1) | Amplifier A output | Drives external load; rail-to-rail swing supports direct connection to SAR ADC reference inputs |
| ±IN_A (Pin 2) | Inverting input, Channel A | Accepts feedback network; high impedance (10¹³ Ω) minimizes loading on precision dividers |
| +IN_A (Pin 3) | Noninverting input, Channel A | Connects to high-Z sensors; common-mode range includes ground and V+ |
| V− (Pin 4) | Negative supply rail | Ground reference for single-supply operation; must be decoupled with 0.1 µF ceramic capacitor |
| +IN_B (Pin 5) | Noninverting input, Channel B | Independent input path for dual-sensor monitoring (e.g., temperature + voltage) |
| ±IN_B (Pin 6) | Inverting input, Channel B | Supports separate gain configuration per channel without inter-channel crosstalk |
| OUT_B (Pin 7) | Amplifier B output | Electrically isolated output node; enables independent buffering of two analog signals |
| V+ (Pin 8) | Positive supply rail | Accepts 1.8–5.5 V; internal ESD diodes clamp transients to rails if input exceeds (V−) − 0.5 V or (V+) + 0.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 1.8 V supply headroom - critical for accurate battery voltage measurement down to 2.0 V |
| 4 µA per channel IQ | Reduces total system standby current by >50% vs. industry-standard 10 µA op-amps in dual-sensor nodes |
| 0.8 mV VOS (typ) | Eliminates need for system-level calibration in medical instrument front-ends targeting <1% total error |
| Unity-gain stable | Permits direct use as voltage follower without external compensation - simplifies PCB layout in space-constrained wearables |
| –40°C to +125°C rating | Validated performance across automotive cabin, industrial motor control, and outdoor solar inverter environments |
Applications
| Power Bank Voltage Monitoring | Solar Inverter DC Link Sensing |
|---|---|
Use Scenario: Real-time tracking of Li-ion cell voltage during charge/discharge cycles in portable power stations. IC Role / Device Role / Timing Role: Dual-channel buffer and level-shifter for 0–4.2 V cell voltage and 0–20 V pack voltage, feeding 12-bit MCU ADC inputs. Use Value: 4 µA/channel IQ extends idle runtime by 3.2× vs. legacy 12 µA op-amps; rail-to-rail output ensures full ADC code utilization. | Use Scenario: Isolated DC bus voltage measurement in string inverters using resistive divider networks. IC Role / Device Role / Timing Role: High-impedance buffer for 1 MΩ+ divider outputs, rejecting common-mode noise from switching MOSFETs. Use Value: 5 pA input bias current limits divider error to <0.05% - meeting IEC 62109 Class II isolation accuracy requirements. |
| Low-Power Motor Control Feedback | Battery-Powered Medical Instrumentation |
Use Scenario: Current sensing via shunt resistor in BLDC motor gate drivers for fan/pump applications. IC Role / Device Role / Timing Role: Dual op-amp configured as differential amplifier (Channel A) and comparator hysteresis generator (Channel B). Use Value: 90 kHz GBW supports 10 kHz PWM rejection; 0.8 mV VOS ensures ±5 mA current detection accuracy at 100 mΩ shunts. | Use Scenario: Amplifying weak bio-potential signals (ECG, EMG) in handheld diagnostic devices. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with 10¹³ Ω input impedance and 83 nV/√Hz noise floor. Use Value: 5 pA bias current prevents electrode polarization drift; rail-to-rail input accepts ±300 mV signals referenced to body potential. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, micropower, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2402IDR | Higher 1 μA IQ, lower 5.5 kHz GBW, 390 µV VOS (typ) | Better DC precision but insufficient bandwidth for PWM rejection above 5 kHz | Prefer when ultra-low IQ dominates over AC performance - e.g., environmental sensor loggers |
| OPA2348AIDR | Higher 45 μA IQ, 1 MHz GBW, 1 mV VOS (typ) | Superior speed/noise trade-off but 11× higher supply current | Choose when driving capacitive loads >100 pF or requiring >100 kHz closed-loop bandwidth |
Compared with TLV2379IDR, TLV2402IDR trades bandwidth for lower IQ and offset, while OPA2348AIDR sacrifices power efficiency for speed and drive strength - making TLV2379IDR the optimal balance for sub-100 kHz, sub-5 µA dual-channel sensing.
Availability
TLV2379IDR is available at Aetrix Electronics and suitable for power banks, solar inverters, and battery-powered instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2379IDR 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 over 90 years of innovation in precision analog ICs.
The TLV2379IDR belongs to TI's cost-optimized, micropower op-amp product line designed specifically for energy-constrained, wide-temperature industrial and portable applications - not general-purpose amplification.
FAQ
What is the maximum operating temperature range for TLV2379IDR?
The TLV2379IDR is fully specified and tested from –40°C to +125°C ambient temperature. All key parameters - including input offset voltage, quiescent current, and open-loop gain - are guaranteed across this range per the SBOS785B datasheet. This makes TLV2379IDR suitable for under-hood automotive modules, industrial motor drives, and outdoor solar electronics where thermal stress is critical. The device's SOIC-8 package exhibits 116.4°C/W junction-to-ambient thermal resistance, supporting reliable operation without forced cooling in most enclosed enclosures.
Does TLV2379IDR support true rail-to-rail input and output operation?
Yes, TLV2379IDR supports rail-to-rail input with a common-mode range extending from (V−) − 0.1 V to (V+) + 0.1 V, and rail-to-rail output with swing to within 25 mV of either supply rail at 5 kΩ load. This is achieved via complementary input transistors and a class AB output stage. The datasheet confirms operation within 100 mV beyond both rails, enabling direct interfacing with 1.8 V logic and zero-referenced sensors. Note that CMRR degrades above (V+) − 1 V due to input stage transition - a design consideration explicitly documented in Figure 7 of SBOS785B.
Can TLV2379IDR drive capacitive loads without instability?
TLV2379IDR remains stable with capacitive loads ≤30 pF in unity-gain configurations. For larger loads, stability can be restored by adding a 10 Ω to 20 Ω series resistor between the output and load - a technique validated in Figure 14 of the SBOS785B datasheet. This resistor suppresses ringing while preserving DC accuracy for purely capacitive loads. However, if a resistive load exists in parallel, a voltage divider forms, introducing a small DC error proportional to RS/RL. The device's 90 kHz GBW and 0.03 V/µs slew rate inherently limit high-frequency oscillation risk in typical sensor-buffering applications.
What is the input bias current specification for TLV2379IDR and why does it matter?
TLV2379IDR specifies ±5 pA typical input bias current at 25°C and VS = 5 V, with values remaining below ±50 pA across –40°C to +125°C. This ultra-low bias current is critical when interfacing with high-impedance sources such as thermistors, pH electrodes, or photodiodes - where even nanoampere-level currents cause significant voltage errors. For example, with a 10 MΩ source impedance, 5 pA bias introduces only 50 µV offset, preserving measurement fidelity in precision analog front-ends. The value is confirmed in Section 7.7 of SBOS785B under "INPUT BIAS CURRENT".
Is TLV2379IDR pin-compatible with other devices in the TLVx379 family?
No, TLV2379IDR is not pin-compatible with TLV379 (single-channel, 5-pin SC70/SOT-23) or TLV4379 (quad-channel, 14-pin TSSOP). It uses an 8-pin SOIC package with dedicated dual-channel pinout: OUT_A/±IN_A/+IN_A/V− on left side and +IN_B/±IN_B/OUT_B/V+ on right side. This layout isolates channel inputs/outputs to minimize crosstalk - a deliberate architectural choice differing from monolithic single/quad variants. Pin compatibility is neither claimed nor supported in the SBOS785B datasheet, and mixing packages requires PCB redesign.
TLV2379IDR 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:
- Rail-to-Rail
- Slew Rate:
- 0.03V/µs
- Gain Bandwidth Product:
- 90 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 4µA (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
TLV2379IDR FAQ
1.How can I place an order for TLV2379IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2379IDR 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 TLV2379IDR reliable?
The price and inventory of TLV2379IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2379IDR is usually 5 days.
3.What payment methods are accepted for TLV2379IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2379IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2379IDR?
TLV2379IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2379IDR 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 TLV2379IDR?
For technical support, including TLV2379IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2379IDR requirements.
6.How does Aetrix verify that TLV2379IDR is sourced from the original manufacturer or authorized distributors?
All TLV2379IDR 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 TLV2379IDR meets industry standards.
7.What is the process for return or replacement of TLV2379IDR?
All TLV2379IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2379IDR, 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 TLV2379IDR part is unused and in its original packaging.
Return procedure for TLV2379IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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