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Texas Instruments TLV2381ID
- Part No.:
- TLV2381ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2381ID.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
TLV2381ID from Texas Instruments is a single-channel micropower rail-to-rail input/output operational amplifier designed for ultra-low-power signal conditioning in battery-operated systems. It delivers 160 kHz gain-bandwidth, 7 µA supply current per channel, and rail-to-rail output swing from 2.7 V to 16 V supply, enabling precision sensing in portable medical devices and smoke detectors.
For engineers reviewing the TLV2381ID datasheet, TLV2381ID pinout, TLV2381ID application, or TLV2381ID equivalent, key selection criteria include its 1 pA input bias current, –40°C to 125°C industrial temperature range, SOIC-8 package compatibility, and verified performance at 2.7 V single-supply operation.
Technical Context
The TLV2381ID employs BiMOS input stage architecture to achieve rail-to-rail input common-mode 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 unity-gain bandwidth is sustained across the full operating voltage range with only 7 µA quiescent current per channel.
It features low input offset voltage (max 4.5 mV), high CMRR (min 70 dB over full temperature range), and robust PSRR (min 70 dB), making it suitable for high-impedance sensor interfaces where DC accuracy and noise immunity are critical under varying supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V - supports single-cell Li-ion (3.0 V), dual alkaline (2.7 V), and ±8 V split supplies. |
| Quiescent Current | 7 µA per channel - enables multi-year battery life in always-on monitoring circuits. |
| Gain-Bandwidth Product | 160 kHz - sufficient for DC-coupled sensor amplification and low-frequency filtering up to ~100 kHz. |
| Input Bias Current | 1 pA typical - minimizes voltage error in high-impedance pH, photodiode, or thermopile sensor front-ends. |
| Input Offset Voltage | 4.5 mV max - ensures sub-1% error in 12-bit ADC interfaces with 3.3 V reference. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive sensors and industrial field equipment. |
| Rail-to-Rail I/O | Input: –0.2 V to VS+0.2 V; Output: within 120 mV of rails at 2.7 V - maximizes dynamic range in low-voltage systems. |
Pinout & Package
TLV2381ID is housed in an 8-pin SOIC (D) package with standard 1.27 mm pitch and 1.75 mm max height. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (IN–) | Differential input node; high-impedance BiMOS terminal requiring short PCB trace to minimize noise pickup. |
| 2 | Non-Inverting Input (IN+) | Differential input node; accepts signals from –0.2 V to VS+0.2 V without phase reversal. |
| 3 | Output (OUT) | Capable of sourcing/sinking 400 µA while maintaining rail-to-rail swing at 2.7 V supply. |
| 4 | Ground (GND) | Reference return path; must connect to low-inductance ground plane for stability. |
| 5 | No Connect (NC) | Internally unconnected; left floating or tied to GND per layout best practices. |
| 6 | No Connect (NC) | Internally unconnected; no electrical function; avoid routing signals nearby. |
| 7 | Positive Supply (VDD) | Accepts 2.7–16 V; requires local 0.1 µF ceramic + 6.8 µF tantalum decoupling per datasheet layout guidelines. |
| 8 | No Connect (NC) | Internally unconnected; not bonded; electrically inert. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of supply voltage headroom in 2.7 V systems, improving SNR by up to 6 dB vs. non-rail-to-rail op-amps. |
| 1 pA input bias current | Reduces input offset drift in high-Z sensor interfaces (e.g., >10 MΩ thermistor networks) by >90% versus TLC27Lx family. |
| 7 µA supply current per channel | Allows integration into energy-harvesting nodes where average power budget is <10 µW. |
| 160 kHz bandwidth at 7 µA | Provides 2× higher small-signal bandwidth than TLC27LxA at same quiescent current, supporting faster response in smoke detector analog signal chains. |
| –40°C to 125°C operation | Eliminates need for derating or thermal compensation in automotive cabin or industrial motor-control feedback paths. |
Applications
| Portable Medical Devices | Power Monitoring Systems |
|---|---|
Use Scenario: Amplifying microvolt-level ECG electrode signals in handheld patient monitors. IC Role / Device Role / Timing Role: Single-supply, low-noise instrumentation amplifier front-end with DC-coupled gain. Use Value: 90 nV/√Hz input noise and 1 pA bias current preserve signal integrity from dry-electrode skin interfaces without active guarding. | Use Scenario: Conditioning shunt voltage in smart electricity meters for real-time current measurement. IC Role / Device Role / Timing Role: Precision current-sense amplifier with rail-to-rail output driving 12-bit SAR ADC reference. Use Value: 4.5 mV max VIO and 70+ dB CMRR ensure <0.5% total error across 100:1 dynamic current range at 230 VAC line voltage. |
| Low-Power Security Sensors | Smoke Detectors |
Use Scenario: Signal conditioning for PIR motion sensors in battery-powered security cameras. IC Role / Device Role / Timing Role: Low-quiescent-current amplifier in AC-coupled bandpass filter stage before comparator. Use Value: 7 µA IQ extends 2xAA battery life beyond 3 years in standby mode while maintaining 0.1 V/µs slew rate for fast transient detection. | Use Scenario: Amplifying ionization chamber current in residential smoke alarms. IC Role / Device Role / Timing Role: Transimpedance amplifier converting femtoamp-level chamber current to measurable voltage. Use Value: 1 pA IIB and 1000 GΩ differential input resistance prevent signal loss across high-value feedback resistors (>10 GΩ). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2381IDBV | SOT-23-5 package; 5-pin, no NC pins; identical electrical specs. | Requires different PCB footprint and layout; better suited for space-constrained portable designs. | Select TLV2381IDBV when board area is limited and reflow compatibility with 0.65 mm pitch is confirmed. |
| TLC27L2CD | Higher 17 µA IQ; narrower input common-mode range (–0.2 V to VS–1.5 V); 10 mV max VIO. | Not suitable for true rail-to-rail input sensing below VS–1.3 V; lower bandwidth (85 kHz). | Choose TLC27L2CD only if legacy design reuse is required and 2.7 V operation with full input range is not needed. |
Compared with TLV2381IDBV, the TLV2381ID offers SOIC-8 mechanical robustness and easier prototyping, while TLC27L2CD trades off power efficiency and input range for cost in non-critical industrial controls.
Availability
TLV2381ID is available at Aetrix Electronics and suitable for portable medical devices, power monitoring systems, and smoke detectors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2381ID 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 TLV2381ID belongs to TI's micropower rail-to-rail op-amp product line, engineered specifically for battery-powered instrumentation, sensor interfaces, and energy-efficient industrial monitoring where DC accuracy and ultra-low IQ are mandatory.
FAQ
What is the maximum supply voltage rating for TLV2381ID?
The absolute maximum supply voltage for TLV2381ID is 16.5 V. However, the recommended operating range is 2.7 V to 16 V. Exceeding 16.5 V risks permanent damage. At 16 V, the device maintains rail-to-rail output swing and 160 kHz bandwidth, making it compatible with ±8 V dual supplies or high-voltage single-ended systems.
Does TLV2381ID support true rail-to-rail input at 2.7 V supply?
Yes, TLV2381ID supports rail-to-rail input common-mode range from –0.2 V to VS + 0.2 V. At 2.7 V supply, this means inputs can extend from –0.2 V to +2.9 V, enabling direct interfacing with transducers that output near-ground or near-rail signals without level-shifting. This is confirmed in the "Recommended Operating Conditions" table of SLOS377A.
What is the output drive capability of TLV2381ID at 2.7 V?
At 2.7 V supply, TLV2381ID delivers ±400 µA output current while maintaining rail-to-rail swing within 120 mV of each rail. This is sufficient to drive 100 kΩ loads directly or interface with 12-bit SAR ADCs having 1–10 kΩ input impedance. The output remains stable with capacitive loads up to 50 pF without external compensation.
Is TLV2381ID pin-compatible with other op-amps in SOIC-8 packages?
No, TLV2381ID has two NC pins (pins 5, 6, and 8) and nonstandard pinout versus generic SOIC-8 op-amps. Its pin 1 is IN–, pin 2 is IN+, pin 3 is OUT, pin 4 is GND, pin 7 is VDD - differing from industry-standard dual-op-amp layouts. Direct replacement requires PCB redesign unless substituting with TLV2382ID (dual version) or verifying pin mapping against target footprint.
How does TLV2381ID perform in terms of input-referred noise?
TLV2381ID specifies 90 nV/√Hz input voltage noise at 1 kHz, measured with VS = 5 V. This value remains stable across 2.7–15 V supplies and is representative of its BiMOS input stage. For low-frequency (<10 Hz) applications like thermistor amplification, 1/f noise is dominated by offset drift (1.1 µV/°C), not broadband noise - making it suitable for precision DC measurements.
TLV2381ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- 8-SOIC
TLV2381ID FAQ
1.How can I place an order for TLV2381ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2381ID 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 TLV2381ID reliable?
The price and inventory of TLV2381ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2381ID is usually 5 days.
3.What payment methods are accepted for TLV2381ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2381ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2381ID?
TLV2381ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2381ID 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 TLV2381ID?
For technical support, including TLV2381ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2381ID requirements.
6.How does Aetrix verify that TLV2381ID is sourced from the original manufacturer or authorized distributors?
All TLV2381ID 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 TLV2381ID meets industry standards.
7.What is the process for return or replacement of TLV2381ID?
All TLV2381ID units undergo pre-shipment inspection (PSI). If there is an issue with TLV2381ID, 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 TLV2381ID part is unused and in its original packaging.
Return procedure for TLV2381ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2381ID Tags
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