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Texas Instruments TLV379IDCKR
- Part No.:
- TLV379IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TLV379IDCKR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,835
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Product details
Overview
TLV379IDCKR from Texas Instruments is a single-channel, micropower, rail-to-rail input/output operational amplifier optimized for ultra-low-power battery-operated systems. It delivers 4 µA typical quiescent current, 0.8 mV typical input offset voltage, and 90 kHz gain-bandwidth product across 1.8 V to 5.5 V supply, enabling precision signal conditioning in power-bank voltage monitoring and portable medical sensor front-ends.
For engineers reviewing the TLV379IDCKR datasheet, TLV379IDCKR pinout, TLV379IDCKR application, or TLV379IDCKR equivalent, this page provides verified package mapping (SC70-5), confirmed rail-to-rail I/O behavior, validated thermal performance (RθJA = 262.2°C/W), and real-world design constraints including capacitive load stability limits and ±5 pA input bias current impact on high-impedance sensor interfaces.
Technical Context
The TLV379IDCKR employs a complementary differential input stage enabling rail-to-rail common-mode input range extending 100 mV beyond both supply rails, with CMRR maintained at 85–100 dB from V– to (V+ – 1 V). Its class AB output stage achieves full rail-to-rail swing-within 25 mV of either rail at 5 kΩ load-and supports unity-gain stability without external compensation.
Designed for operation from –40°C to +125°C, it maintains 4 µA typical IQ and 83 nV/√Hz input voltage noise density across its full 1.8 V–5.5 V supply range, while featuring 5 pA typical input bias current and 1013 Ω||3 pF differential input impedance-critical for high-precision, low-leakage transducer amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interface with Li-ion, coin-cell, and energy-harvesting sources without regulation |
| Quiescent Current | 4 µA (typ) - extends battery life in always-on sensor nodes and wearable health monitors |
| Input Offset Voltage | 0.8 mV (typ) - supports <1% error in 100-mV full-scale biomedical signal amplification |
| Gain-Bandwidth Product | 90 kHz - sufficient for DC–10 kHz biosignal acquisition (ECG, pulse oximetry) with stable unity-gain buffer |
| Input Bias Current | ±5 pA (max) - minimizes voltage error in >100-MΩ pH electrode or photodiode transimpedance circuits |
| Output Swing | Within 25 mV of rails (RL = 5 kΩ) - preserves dynamic range in single-supply 3.3-V microcontroller ADC interfaces |
| Common-Mode Rejection | 85 dB (min) - rejects power-supply ripple and EMI in noisy portable equipment environments |
Pinout & Package
TLV379IDCKR is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm body size), optimized for space-constrained portable designs. The package features gull-wing leads, moisture sensitivity level 1 (MSL-1), and Pb-free terminal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN | Noninverting input - accepts signals up to V– – 0.1 V and V+ + 0.1 V; requires current limiting if driven beyond rails |
| 2 | V– | Negative supply terminal - connects to ground in single-supply configurations; must be decoupled with 0.1-µF ceramic capacitor |
| 3 | –IN | Inverting input - used for feedback in closed-loop configurations; sensitive to PCB parasitic capacitance above 30 pF |
| 4 | OUT | Amplifier output - drives resistive loads ≤25 kΩ directly; requires series resistor (10–20 Ω) for >30-pF capacitive loads |
| 5 | V+ | Positive supply terminal - accepts 1.8–5.5 V; bypass capacitor placement within 2 mm is mandatory for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range extends 100 mV beyond both supply rails - eliminates level-shifting circuitry in single-supply data loggers |
| Rail-to-rail output | Swings to within 25 mV of V+ or V– at 5-kΩ load - maximizes usable ADC input range in 3.3-V IoT edge nodes |
| Ultra-low IQ | 4 µA typical - reduces average current draw below 1 µA in duty-cycled sensor wake-up architectures |
| Low input bias current | ±5 pA max - prevents signal degradation in high-impedance piezoelectric or electrochemical sensor interfaces |
| Unity-gain stable | No external compensation required - simplifies layout and reduces BOM count in battery-monitoring reference buffers |
Applications
| Battery Voltage Monitoring | Portable Medical Sensor Front-End |
|---|---|
Use Scenario: Real-time Li-ion cell voltage tracking in power banks with 3.3-V MCU ADC input. IC Role / Device Role / Timing Role: Precision buffer and level translator between battery divider network and SAR ADC reference input. Use Value: 0.8-mV offset ensures <0.025% full-scale error at 4.2-V battery; 4-µA IQ adds negligible load during sleep mode. |
Use Scenario: Amplifying low-amplitude bio-potential signals (e.g., ECG lead-off detection) in handheld diagnostic devices. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier gain block with DC-coupled input and rail-to-rail output swing. Use Value: ±5-pA bias current prevents electrode polarization drift; 83-nV/√Hz noise preserves SNR in sub-100-µV signal paths. |
| Solar Charge Controller Sensing | Low-Power Motor Current Feedback |
Use Scenario: Shunt-based current sensing in 12-V solar charge controllers powered by supercapacitors. IC Role / Device Role / Timing Role: High-side current-sense amplifier with bidirectional capability and 1.8-V operation. Use Value: 1.8-V minimum supply allows direct operation from harvested energy; 90-kHz GBW supports fast overcurrent response. |
Use Scenario: Closed-loop speed control in BLDC fan drivers using hall-effect rotor position feedback. IC Role / Device Role / Timing Role: Signal conditioner for analog hall sensor output prior to microcontroller comparator input. Use Value: Rail-to-rail I/O accommodates varying hall sensor output swing (0.2–VCC); 4-µA IQ enables always-on rotor detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV379DBVR | Same die, SOT-23-5 package (2.90 mm × 1.60 mm); RθJA = 220.8°C/W vs. 262.2°C/W for SC70 | Preferred where board area allows larger footprint but thermal margin is critical (e.g., enclosed enclosures) | Select TLV379DBVR when higher power dissipation tolerance is needed without changing schematic or layout topology |
| OPA316IDBVR | Higher IQ (400 µA), wider GBW (10 MHz), lower VOS (0.15 mV), same SC70-5 package | Suitable for higher-speed sensor interfaces requiring >100-kHz bandwidth, not ultra-low-power use cases | Choose OPA316IDBVR only when bandwidth or offset demands outweigh battery-life requirements |
Compared with TLV379IDCKR, TLV379DBVR offers better thermal performance in the same functional family, while OPA316IDBVR trades 100× higher quiescent current for 110× greater bandwidth-making TLV379IDCKR the sole choice for sub-10-µA system-level power budgets.
Availability
TLV379IDCKR is available at Aetrix Electronics and suitable for battery-powered instruments, portable medical devices, and solar inverter monitoring systems requiring stable component supply across extended production lifecycles.
Supply support for TLV379IDCKR 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 amplifiers and low-power signal chains.
The TLV379IDCKR belongs to TI's cost-optimized micropower op-amp family, designed specifically for battery-constrained applications demanding rail-to-rail performance, sub-5-µA quiescent current, and robust operation from –40°C to +125°C.
FAQ
What is the maximum capacitive load the TLV379IDCKR can drive without instability?
The TLV379IDCKR exhibits overshoot in unity-gain buffer configurations with capacitive loads exceeding 30 pF, as documented in Figure 11 of the SBOS785B datasheet. To maintain stability, insert a 10–20 Ω series resistor between the OUT pin and the load capacitance. This preserves DC accuracy for purely capacitive loads while eliminating ringing-verified across –40°C to +125°C operating conditions for TLV379IDCKR.
Does the TLV379IDCKR support true rail-to-rail input when powered from 1.8 V?
Yes, the TLV379IDCKR maintains rail-to-rail input operation down to 1.8 V supply, with common-mode voltage range specified from (V–) – 0.1 V to (V+) + 0.1 V. At 1.8 V, this means inputs can swing from –0.1 V to +1.9 V-confirmed in Section 7.7 Electrical Characteristics and Figure 7 (Offset Voltage vs Common-Mode Voltage) of the TLV379IDCKR datasheet.
Can the TLV379IDCKR operate with a single 1.8-V supply and still achieve full output swing?
Yes, the TLV379IDCKR delivers rail-to-rail output swing on a 1.8-V supply, typically reaching within 25 mV of both rails into a 5-kΩ load. This is validated in the "Output Voltage Swing from Rail" specification (25 mV typ, 50 mV max) under VS = 1.8 V conditions in Table 7.7 of the official datasheet-enabling direct interfacing with 1.8-V logic and ADC references.
What is the thermal resistance (RθJA) of the TLV379IDCKR in its SC70-5 package?
The TLV379IDCKR in the DCK (SC70-5) package has a junction-to-ambient thermal resistance (RθJA) of 262.2°C/W, as published in Section 7.4 of the SBOS785B datasheet. This value assumes standard JEDEC 2-layer board conditions and is critical for calculating maximum allowable power dissipation in compact, sealed enclosures where airflow is restricted.
Is the TLV379IDCKR pin-compatible with other members of the TLV379 family?
No-TLV379IDCKR (SC70-5) is not pin-compatible with TLV379 variants in SOIC-8 or SOT-23-5 packages due to differing pinouts. The SC70-5 uses Pin 1 = +IN, Pin 2 = V–, Pin 3 = –IN, Pin 4 = OUT, Pin 5 = V+, whereas SOT-23-5 assigns Pin 1 = OUT, Pin 2 = V–, Pin 3 = +IN, Pin 4 = –IN, Pin 5 = V+. This difference is explicitly shown in Figure 6 (Pin Configuration and Functions) of the TLV379IDCKR datasheet.
TLV379IDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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
- Current - Output / Channel:
- -
- 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:
- SC-70-5
TLV379IDCKR FAQ
1.How can I place an order for TLV379IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV379IDCKR 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 TLV379IDCKR reliable?
The price and inventory of TLV379IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV379IDCKR is usually 5 days.
3.What payment methods are accepted for TLV379IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV379IDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV379IDCKR?
TLV379IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV379IDCKR 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 TLV379IDCKR?
For technical support, including TLV379IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV379IDCKR requirements.
6.How does Aetrix verify that TLV379IDCKR is sourced from the original manufacturer or authorized distributors?
All TLV379IDCKR 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 TLV379IDCKR meets industry standards.
7.What is the process for return or replacement of TLV379IDCKR?
All TLV379IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV379IDCKR, 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 TLV379IDCKR part is unused and in its original packaging.
Return procedure for TLV379IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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