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Texas Instruments TLV369IDCKT
- Part No.:
- TLV369IDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TLV369IDCKT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,879
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Product details
Overview
TLV369IDCKT from Texas Instruments is a single-channel, nano-power operational amplifier optimized for ultra-low-voltage, rail-to-rail input/output signal conditioning in battery-powered medical and portable instrumentation. It delivers 800 nA quiescent current, 400 µV typical offset voltage, 12 kHz gain-bandwidth product, and zero-crossover distortion across 1.8 V to 5.5 V supply operation - enabling precision DC-coupled amplification in blood glucose meters and wearable sensor front-ends.
For engineers reviewing the TLV369IDCKT datasheet, TLV369IDCKT pinout, TLV369IDCKT application, or TLV369IDCKT equivalent, key selection criteria include its guaranteed rail-to-rail input common-mode range down to V–, output swing within 25 mV of rails at 10 kΩ load, 0.5 µV/°C offset drift, and SC70-5 package compatibility with space-constrained PCB layouts.
Technical Context
The TLV369IDCKT employs a proprietary zero-crossover distortion input stage that eliminates the offset discontinuity typical of complementary-input rail-to-rail op amps, ensuring monotonic linearity over the full –0.2 V to V+ + 0.2 V common-mode range. Its 1.8-V minimum supply enables direct interfacing with Li-ion battery voltages and low-dropout regulators without level-shifting.
This device operates in a single functional mode with no enable/disable control; it draws only 800 nA per channel and maintains 130 dB open-loop gain at 5.5 V supply while supporting true rail-to-rail output swing - critical for maximizing dynamic range in single-supply, high-impedance sensor interfaces such as electrochemical biosensors and thermistor bridges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V - supports direct connection to single-cell Li-ion (3.0–3.7 V), coin-cell (1.5–3.0 V), or regulated 3.3 V/5.0 V rails without external level translation. |
| Quiescent Current | 800 nA (typ) - enables multi-year battery life in always-on sensor nodes with <1 µA total system standby current. |
| Input Offset Voltage | 400 µV (typ), 2 mV (max) - ensures <0.1% gain error in 100-mV full-scale biomedical sensor outputs without trimming. |
| Gain-Bandwidth Product | 12 kHz - sufficient for DC–100 Hz physiological signal amplification (ECG, pulse oximetry) with stable unity-gain configuration. |
| Input Bias Current | 10 pA (typ) - minimizes voltage error across high-value resistive dividers (>10 MΩ) used in pH or ion-selective electrode interfaces. |
| Common-Mode Rejection | 110 dB (typ) - rejects power-supply ripple and EMI-induced common-mode noise in unshielded portable enclosures. |
| Output Swing | Within 25 mV of rails (at 10 kΩ) - preserves >95% of available ADC input range when driving 12-bit SAR converters directly. |
Pinout & Package
TLV369IDCKT is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm, 0.65 mm pitch), optimized for high-density portable PCBs and compatible with standard reflow profiles (MSL Level-2, 260°C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Highest potential node; must be decoupled with 0.1 µF ceramic capacitor placed ≤2 mm from pin to minimize supply noise coupling. |
| V− | Negative supply or ground | Reference for single-supply operation; connects to system GND or negative rail; serves as common return for input bias currents. |
| +IN | Noninverting input | High-impedance node (10¹³ Ω || 6 pF); accepts signals from passive sensors or filtered references without loading. |
| −IN | Inverting input | High-impedance node; used in transimpedance or differential configurations; requires matched layout to +IN for CMRR preservation. |
| OUT | Amplifier output | Capable of sourcing/sinking ±10 mA; drives 10 kΩ loads to within 25 mV of rails; stable with ≥20 pF capacitive loads. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-crossover distortion architecture | Eliminates input-stage switching artifacts across full common-mode range, enabling accurate DC amplification of bipolar signals (±200 mV) without clipping or dead zones. |
| Rail-to-rail input and output | Accepts inputs from V− to V+, delivers outputs within 25 mV of either rail - maximizes usable signal swing in 1.8–3.3 V systems where headroom is constrained. |
| Ultra-low input bias current (10 pA) | Prevents significant voltage drop across high-impedance sensor elements (e.g., glass pH electrodes, photodiode feedback networks), preserving measurement accuracy. |
| Low offset drift (0.5 µV/°C) | Reduces temperature-induced baseline shift in clinical-grade devices operating across –40°C to +85°C ambient ranges without calibration. |
| 1.8-V minimum supply operation | Enables direct integration with energy-harvesting circuits and sub-2-V microcontrollers, eliminating need for boost converters in ultra-low-power designs. |
Applications
| Blood Glucose Meter Front-End | Portable ECG Signal Conditioning |
|---|---|
Use Scenario: Amplifies weak current from glucose oxidase enzyme reaction on test strip, converting pA-level currents into measurable mV-range voltages. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10 MΩ feedback resistor; provides DC-coupled gain while rejecting common-mode interference from body capacitance. Use Value: 10 pA input bias current prevents loading of high-impedance enzymatic cell; 400 µV offset ensures <0.5% error in 100-mV full-scale reading at room temperature. | Use Scenario: Buffers and filters low-amplitude (0.5–2 mV), low-frequency (0.05–150 Hz) biopotential signals from dry electrodes before ADC sampling. IC Role / Device Role / Timing Role: Rail-to-rail input buffer with gain-of-10 noninverting configuration; maintains signal integrity across varying skin-electrode contact impedance. Use Value: Zero-crossover distortion prevents harmonic generation during R-wave transitions; 800 nA IQ extends battery life beyond 72 hours in continuous monitoring mode. |
| Wireless Sensor Node Analog Front-End | Low-Power Thermistor Interface |
Use Scenario: Conditions analog output from MEMS accelerometer or humidity sensor prior to digitization and BLE transmission in IoT edge nodes. IC Role / Device Role / Timing Role: Precision gain stage with programmable offset correction; operates continuously during sleep/wake cycles with minimal wake-up latency. Use Value: 12 kHz GBW supports anti-alias filtering up to 1 kHz; 1.8-V operation allows direct interface with 2.0-V LDO output, reducing BOM count by one regulator. | Use Scenario: Measures resistance change of NTC thermistor in battery thermal management systems using constant-current excitation and ratiometric voltage sensing. IC Role / Device Role / Timing Role: Low-drift difference amplifier referenced to internal bandgap; rejects supply ripple and PCB trace resistance variations. Use Value: 0.5 µV/°C offset drift limits temperature measurement error to <0.1°C over –20°C to +70°C range; rail-to-rail output fully utilizes 12-bit ADC reference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPV821DBVR | Lower IQ (320 nA), higher offset (1.25 mV max), same SC70-5 package, 10 kHz GBW | Better suited for ultra-long-life battery applications where offset tolerance >1 mV is acceptable | Select LPV821DBVR when minimizing average current dominates over DC accuracy requirements. |
| OPA316IDBVR | Higher IQ (400 µA), lower offset (100 µV typ), 10 MHz GBW, same SC70-5 package | Required for AC-coupled, wideband sensor interfaces (e.g., ultrasonic transducers) needing >100 kHz bandwidth | Choose OPA316IDBVR only when bandwidth >100 kHz and supply current >400 µA are acceptable trade-offs. |
Compared with LPV821DBVR, TLV369IDCKT offers tighter DC precision at modest IQ penalty; versus OPA316IDBVR, it trades bandwidth and speed for orders-of-magnitude lower power - making TLV369IDCKT optimal for DC- and low-frequency (<100 Hz) sensor signal chains where battery longevity is critical.
Availability
TLV369IDCKT is available at Aetrix Electronics and suitable for blood glucose meters, portable ECG monitors, wireless sensor nodes, and low-power thermistor interfaces requiring stable component supply across extended production lifecycles.
Supply support for TLV369IDCKT 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 chain solutions.
The TLV369IDCKT belongs to TI's cost-optimized nanopower op amp family, designed specifically for DC-accurate, single-supply signal conditioning in battery-powered medical, industrial, and portable electronics where size, power, and precision are co-constrained.
FAQ
What is the maximum operating temperature range for TLV369IDCKT?
The TLV369IDCKT is specified for continuous operation from –40°C to +125°C junction temperature, with recommended ambient operating conditions spanning –40°C to +85°C. Its thermal resistance (RθJA = 293.3°C/W in SC70) supports reliable performance in sealed portable enclosures without forced airflow, provided PCB copper area meets minimum thermal pad guidelines.
Does TLV369IDCKT support true rail-to-rail input with 1.8-V supply?
Yes, TLV369IDCKT supports true rail-to-rail input operation down to 1.8 V supply, with common-mode voltage range extending from V− to V+. This is enabled by its zero-crossover distortion input stage, which eliminates the input offset discontinuity seen in conventional rail-to-rail op amps - verified in Figure 1 of the SBOS757 datasheet across the full 1.8–5.5 V supply range.
Can TLV369IDCKT drive capacitive loads without oscillation?
TLV369IDCKT is stable with capacitive loads up to 20 pF, as confirmed in Figure 10 of the SBOS757 datasheet. For loads exceeding 20 pF (e.g., long PCB traces or ADC input capacitance), a series isolation resistor (≥100 Ω) between OUT and the load is recommended to maintain phase margin and prevent peaking or ringing in step response.
What is the typical input offset voltage drift over temperature for TLV369IDCKT?
The TLV369IDCKT exhibits a typical input offset voltage drift of 0.5 µV/°C over the –40°C to +85°C temperature range, as specified in Section 6.6 of the SBOS757 datasheet. This low drift ensures minimal baseline shift in precision DC measurements, such as thermistor or strain gauge interfaces, without requiring periodic recalibration.
Is TLV369IDCKT pin-compatible with other SC70-5 op amps like LPV821DBVR?
Yes, TLV369IDCKT uses the standard SC70-5 pinout (V+, OUT, –IN, V−, +IN), matching LPV821DBVR, OPA316IDBVR, and other industry-standard SC70-5 op amps. This allows direct PCB footprint reuse in designs where functional requirements (bandwidth, offset, IQ) permit substitution - though electrical validation is required due to differences in gain-phase behavior and stability margins.
TLV369IDCKT 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:
- 0.005V/µs
- Gain Bandwidth Product:
- 12 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 800nA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TLV369IDCKT FAQ
1.How can I place an order for TLV369IDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV369IDCKT 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 TLV369IDCKT reliable?
The price and inventory of TLV369IDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV369IDCKT is usually 5 days.
3.What payment methods are accepted for TLV369IDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV369IDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV369IDCKT?
TLV369IDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV369IDCKT 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 TLV369IDCKT?
For technical support, including TLV369IDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV369IDCKT requirements.
6.How does Aetrix verify that TLV369IDCKT is sourced from the original manufacturer or authorized distributors?
All TLV369IDCKT 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 TLV369IDCKT meets industry standards.
7.What is the process for return or replacement of TLV369IDCKT?
All TLV369IDCKT units undergo pre-shipment inspection (PSI). If there is an issue with TLV369IDCKT, 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 TLV369IDCKT part is unused and in its original packaging.
Return procedure for TLV369IDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV369IDCKT Tags
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