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Texas Instruments TLV2381IDBVT
- Part No.:
- TLV2381IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2381IDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,215
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Product details
Overview
TLV2381IDBVT from Texas Instruments is a single-channel micropower rail-to-rail input/output operational amplifier in a 5-pin SOT-23 package, delivering 160 kHz gain-bandwidth, 7 µA supply current per channel, and 90 nV/√Hz input noise voltage. It operates from 2.7 V to 16 V over –40°C to 125°C and serves precision low-power sensor signal conditioning in portable medical devices and smoke detectors.
For engineers reviewing the TLV2381IDBVT datasheet, TLV2381IDBVT pinout, TLV2381IDBVT application, or TLV2381IDBVT equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail I/O swing at 2.7 V supply, input bias current ≤60 pA (max), and guaranteed operation across industrial temperature range without derating.
Technical Context
The TLV2381IDBVT employs BiMOS input stage architecture enabling rail-to-rail common-mode input range (–0.2 V to VS + 0.2 V) and rail-to-rail output swing (within 120 mV of rails at VS = 2.7 V). Its 160 kHz GBW and 0.06 V/µs slew rate support stable DC-coupled amplification with minimal phase margin degradation up to 50 pF load capacitance.
Designed for single-supply operation down to 2.7 V, it achieves 7 µA typical supply current while maintaining 77 dB CMRR at 25°C and 70 dB over full temperature range. Input offset voltage is specified at 4.5 mV max (25°C) and 6.5 mV max over –40°C to 125°C, with 1.1 µV/°C drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - supports single-cell LiFePO₄ (2.8 V min) and dual alkaline (3 V) systems without level-shifting. |
| Quiescent Current | 7 µA per channel - enables >1-year battery life in coin-cell-powered smoke detectors with 10-second wake-up intervals. |
| Gain Bandwidth Product | 160 kHz - sufficient for DC–100 Hz biosignal amplification (ECG, pulse oximetry) with ≥60 dB closed-loop gain stability. |
| Input Bias Current | ≤60 pA (25°C) - minimizes voltage error across high-impedance pH or ion-selective electrode interfaces (>10 MΩ source). |
| Input Noise Voltage | 90 nV/√Hz at 1 kHz - preserves SNR in sub-mV sensor outputs such as thermopiles and piezoresistive pressure transducers. |
| Output Voltage Swing | Within 120 mV of rails at VS = 2.7 V - maximizes dynamic range for ADCs with 0–2.5 V input spans in portable instrumentation. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive cabin air quality sensors and industrial power monitoring modules. |
Pinout & Package
SOT-23 (DBV) 5-pin plastic package, 2.9 mm × 1.6 mm × 1.45 mm height, JEDEC MO-178 compliant, tape-and-reel packaged (250 units/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers rail-to-rail voltage swing; drives 100 kΩ loads with <120 mV headroom at 2.7 V supply. |
| 2 - GND | Analog ground reference | Must be connected to low-impedance PCB ground plane; decoupling capacitor (0.1 µF ceramic) placed within 2 mm. |
| 3 - IN+ | Non-inverting input | Accepts signals from –0.2 V to VS + 0.2 V; high-impedance node requiring guard ring layout for <1 pA leakage paths. |
| 4 - VDD | Positive supply | Accepts 2.7–16 V; requires parallel 6.8 µF tantalum + 0.1 µF ceramic decoupling per TI layout guidelines. |
| 5 - IN– | Inverting input | High-impedance feedback node; trace length minimized (<3 mm) to reduce stray capacitance-induced instability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal utilization in single-supply systems-no external level-shifting required for 0–2.5 V ADC interfacing. |
| 1 pA typical input bias current | Reduces offset error in high-Z sensor front-ends (e.g., electrochemical gas sensors), eliminating need for bias-current compensation resistors. |
| 7 µA supply current per channel | Supports always-on monitoring in battery-powered security systems with <1 µA average system sleep current when paired with low-leakage MCU. |
| 160 kHz bandwidth at 7 µA | Provides usable AC response for slow-varying industrial process signals (e.g., RTD linearization, thermocouple cold-junction compensation) without excessive power penalty. |
| –40°C to 125°C operation | Eliminates thermal derating in automotive cabin air quality modules and industrial motor-drive current-sense amplifiers mounted near heatsinks. |
Applications
| Portable Medical Devices | Power Monitoring Systems |
|---|---|
Use Scenario: Amplifying microvolt-level ECG signals from dry electrodes in handheld cardiac monitors. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as non-inverting amplifier with gain = 100 and 0.05–150 Hz bandpass filtering. Use Value: 90 nV/√Hz input noise ensures ≥70 dB SNR at 1 mVpp input; 7 µA quiescent current extends AA battery life to >18 months in intermittent-use mode. | Use Scenario: Isolated current sensing in smart circuit breakers using shunt resistor and optocoupler feedback. IC Role / Device Role / Timing Role: Precision difference amplifier driving isolated sigma-delta ADC input with 2.7 V supply from auxiliary winding. Use Value: Rail-to-rail output swing delivers full 0–2.5 V ADC range; 4.5 mV max VIO limits measurement error to <0.2% FS at 100 A full-scale shunt. |
| Low-Power Security Sensors | Smoke Detectors |
Use Scenario: Signal conditioning for PIR motion sensors in battery-operated home security nodes. IC Role / Device Role / Timing Role: Low-noise amplifier with active high-pass filter (0.3 Hz cutoff) and gain = 500 to detect 100 µV peak differential output. Use Value: 1 pA input bias current prevents false triggers from leakage across contaminated PCB surfaces; 125°C rating supports attic-mounted deployment. | Use Scenario: Amplifying photocurrent from IR LED/photodiode pair in optical chamber of residential smoke alarms. IC Role / Device Role / Timing Role: Transimpedance amplifier converting 100 pA–10 nA photocurrent to 0.1–100 mV output for comparator threshold detection. Use Value: 60 pA max input bias current avoids masking weak smoke signals; 2.7 V minimum supply allows direct use of CR123A primary cell without regulator. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA349AIDBVR | Lower supply voltage (1.8–5.5 V), lower IQ (2 µA), but reduced GBW (70 kHz) and higher VIO (10 mV max). | Better for 1.8 V microcontrollers; unsuitable for 12 V power monitoring or >100 Hz biosignals due to bandwidth limitation. | Select OPA349AIDBVR only when operating below 3 V and bandwidth demand is <50 kHz. |
| TLV27L1CDCKR | Higher IQ (11 µA), narrower VICR (–0.2 V to VS – 1.2 V), no rail-to-rail output; same SOT-23-5 package. | Cannot drive ADCs requiring 0 V input; less suitable for low-VS sensor interfaces where output must reach ground. | Choose TLV27L1CDCKR only if existing layout uses TLC27Lx family and rail-to-rail output is not required. |
Compared with OPA349AIDBVR and TLV27L1CDCKR, TLV2381IDBVT uniquely balances 160 kHz bandwidth, rail-to-rail I/O, and 7 µA IQ across 2.7–16 V - making it the only option supporting both low-voltage portable medical and higher-voltage industrial power monitoring without design compromise.
Availability
TLV2381IDBVT is available at Aetrix Electronics and suitable for portable medical devices, power monitoring systems, and low-power security detection systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2381IDBVT 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 TLV238x product line was designed specifically for ultra-low-power, rail-to-rail signal conditioning in battery-constrained industrial and portable applications - emphasizing micropower operation without sacrificing input/output voltage range or temperature robustness.
FAQ
What is the maximum supply voltage for TLV2381IDBVT?
The absolute maximum supply voltage for TLV2381IDBVT is 16.5 V, but the recommended operating range is 2.7 V to 16 V. Operation above 16 V risks permanent damage; designs using ±8 V dual supplies must ensure total differential voltage does not exceed 16 V. The TLV2381IDBVT datasheet specifies performance guarantees only within the 2.7–16 V range.
Does TLV2381IDBVT support rail-to-rail input at 2.7 V supply?
Yes, TLV2381IDBVT supports rail-to-rail input common-mode range from –0.2 V to VS + 0.2 V, verified at 2.7 V supply. This allows direct interfacing with sensors whose output swings to ground or near-VDD, such as thermistors and bridge transducers, without external level-shifting circuitry.
What is the input bias current specification for TLV2381IDBVT over temperature?
TLV2381IDBVT input bias current is ≤60 pA at 25°C, ≤200 pA at 70°C, and ≤1000 pA at 125°C. These values are maximums per the SLOS377A datasheet, measured with VIC = VS/2 and VO = VS/2. At –40°C, typical IIB is <1 pA, supporting cryogenic sensor interfaces.
Can TLV2381IDBVT drive capacitive loads?
TLV2381IDBVT maintains stability with up to 50 pF capacitive load at unity gain, as confirmed by phase margin ≥62° in Figure 16 of the datasheet. For loads >50 pF, external isolation resistance (e.g., 10 Ω in series with output) is required to prevent peaking or oscillation in precision measurement circuits.
Is TLV2381IDBVT pin-compatible with other SOT-23 op-amps?
TLV2381IDBVT uses standard SOT-23-5 pinout (OUT-GND-IN+-VDD-IN–), matching industry convention for single op-amps. It is pin-compatible with OPA349AIDBVR and TLV27L1CDCKR, but functional differences in bandwidth, input range, and output swing require validation before drop-in replacement in existing designs.
TLV2381IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.06V/µs
- Gain Bandwidth Product:
- 160 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 7µA
- Current - Output / Channel:
- 400 µA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV2381IDBVT FAQ
1.How can I place an order for TLV2381IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2381IDBVT 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 TLV2381IDBVT reliable?
The price and inventory of TLV2381IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2381IDBVT is usually 5 days.
3.What payment methods are accepted for TLV2381IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2381IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2381IDBVT?
TLV2381IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2381IDBVT 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 TLV2381IDBVT?
For technical support, including TLV2381IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2381IDBVT requirements.
6.How does Aetrix verify that TLV2381IDBVT is sourced from the original manufacturer or authorized distributors?
All TLV2381IDBVT 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 TLV2381IDBVT meets industry standards.
7.What is the process for return or replacement of TLV2381IDBVT?
All TLV2381IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TLV2381IDBVT, 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 TLV2381IDBVT part is unused and in its original packaging.
Return procedure for TLV2381IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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