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Texas Instruments TLV2381IDR
- Part No.:
- TLV2381IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2381IDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,896
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Product details
Overview
TLV2381IDR from Texas Instruments is a single-channel micropower rail-to-rail input/output operational amplifier in SOIC-8 package, delivering 160 kHz gain-bandwidth, 7 µA supply current per channel, and 90 nV/√Hz input noise voltage - ideal for low-power sensor signal conditioning in portable medical devices and smoke detectors.
For engineers reviewing the TLV2381IDR datasheet, TLV2381IDR pinout, TLV2381IDR application, or TLV2381IDR equivalent, key selection criteria include its –40°C to 125°C industrial temperature range, 2.7 V to 16 V single-supply operation, rail-to-rail output swing down to 120 mV from rail at 2.7 V, and BiMOS input stage enabling 1 pA typical input bias current.
Technical Context
The TLV2381IDR employs a BiMOS input stage to achieve ultra-low input bias current (1 pA typ) while maintaining rail-to-rail input common-mode range (–0.2 V to VS + 0.2 V) and rail-to-rail output swing. Its 160 kHz gain-bandwidth product and 0.06 V/µs slew rate are optimized for precision DC-coupled and low-frequency AC signal amplification.
It operates across 2.7 V to 16 V single supply (or ±1.35 V to ±8 V dual supply), with guaranteed performance over –40°C to 125°C. Input offset voltage is specified at 4.5 mV max (25°C) and 6.5 mV max over full temperature range, supporting stable operation in battery-powered systems where quiescent current must remain below 10 µA per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 16 V single supply - enables direct operation from two 1.5 V alkaline cells or 12 V industrial rails. |
| Quiescent Current | 7 µA per channel (typ) - supports >10-year battery life in always-on smoke detector front-ends. |
| Gain-Bandwidth Product | 160 kHz (typ) - sufficient for ECG lead-off detection, thermistor amplification, and slow-varying sensor outputs. |
| Input Bias Current | 1 pA (typ) - minimizes voltage error in high-impedance pH or ion-selective electrode interfaces. |
| Input Noise Voltage | 90 nV/√Hz at 1 kHz - preserves signal integrity in low-level transducer applications like piezoelectric vibration sensors. |
| Output Voltage Swing | Within 120 mV of rails at 2.7 V supply - maximizes dynamic range in low-voltage data acquisition systems. |
| Input Offset Voltage | 4.5 mV max (25°C), 6.5 mV max (–40°C to 125°C) - ensures predictable DC accuracy without trimming in cost-sensitive designs. |
Pinout & Package
TLV2381IDR is housed in an 8-pin SOIC (D) package with 1.27 mm pitch, 3.91 mm × 4.90 mm body, and 1.75 mm max height - compatible with standard surface-mount assembly and IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; must be left floating or tied to ground per layout best practice to reduce coupling. |
| 2 (IN–) | Inverting input | Differential input node accepting feedback network; high-impedance BiMOS input minimizes loading on source. |
| 3 (IN+) | Non-inverting input | Rail-to-rail common-mode range (–0.2 V to VS + 0.2 V) allows direct interface to resistive divider references. |
| 4 (GND) | Analog ground | Primary reference for input/output swing; requires low-inductance connection to solid ground plane. |
| 5 (NC) | No internal connection | Unused pin; no internal bond wire; avoid routing signals nearby to prevent crosstalk. |
| 6 (VDD) | Positive supply | Accepts 2.7–16 V; requires local 0.1 µF ceramic + 6.8 µF tantalum decoupling per datasheet layout guidelines. |
| 7 (OUT) | Amplifier output | Rail-to-rail output capable of sourcing/sinking ≥400 µA at 2.7 V; drives 100 kΩ loads with <0.1% settling in 61 µs. |
| 8 (NC) | No internal connection | Unused pin; electrically isolated; may be used as thermal pad anchor if soldered to copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of supply voltage headroom in single-supply systems, eliminating level-shifting circuitry. |
| 1 pA typical input bias current | Reduces voltage error in high-Z sensor interfaces (e.g., photodiode transimpedance amps) without external guarding. |
| 7 µA per channel supply current | Supports multi-year operation on coin-cell batteries in wireless sensor nodes and portable diagnostics. |
| –40°C to 125°C operating range | Validated for under-hood automotive sensor signal conditioning and industrial power monitoring environments. |
| BiMOS input architecture | Combines MOSFET input impedance with bipolar speed, achieving both ultra-low IB and usable bandwidth at microamp currents. |
Applications
| Portable Medical Devices | Power Monitoring Systems |
|---|---|
Use Scenario: Amplifying low-amplitude bio-signals (e.g., ECG leads, pulse oximetry photodiode outputs) in handheld patient monitors. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with rail-to-rail output driving 12-bit SAR ADC inputs. Use Value: 90 nV/√Hz noise and 1 pA IB preserve microvolt-level signal integrity without active filtering or calibration. | Use Scenario: Conditioning shunt voltage signals in smart energy meters and battery management system current sensing. IC Role / Device Role / Timing Role: Low-drift, low-power difference amplifier feeding isolated sigma-delta modulators. Use Value: 6.5 mV max VIO over temperature eliminates need for periodic offset correction in Class 0.5 metering. |
| Low-Power Security Sensors | Smoke Detectors |
Use Scenario: Signal amplification for PIR motion sensors and glass-break acoustic detectors in battery-operated security panels. IC Role / Device Role / Timing Role: High-input-impedance buffer and gain stage preceding window comparators for event-triggered wake-up. Use Value: 7 µA IQ enables >5-year shelf life on AA batteries while maintaining reliable detection sensitivity. | Use Scenario: Amplifying ionization chamber current (sub-picoamp) in residential smoke alarms. IC Role / Device Role / Timing Role: Transimpedance amplifier with guarded input and low-noise feedback network. Use Value: 1 pA IB and 90 nV/√Hz noise enable reliable detection of 10 fA–100 fA chamber currents without false alarms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp 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 Vn (300 nV/√Hz). | Better suited for sub-3 V coin-cell applications; not rated above 5.5 V or 125°C. | Select OPA349AIDBVR only when supply is strictly ≤5.5 V and ultra-low IQ dominates over bandwidth/noise. |
| TLV27L1CDR | Higher IQ (11 µA), lower GBW (100 kHz), wider VIO spec (5 mV max), and non-rail-to-rail output swing. | Lacks rail-to-rail output - limits dynamic range in low-voltage systems; less suitable for precision sensor front-ends. | Choose TLV27L1CDR only if legacy compatibility or cost is primary and 160 kHz bandwidth is unnecessary. |
Compared with OPA349AIDBVR and TLV27L1CDR, TLV2381IDR uniquely balances 160 kHz bandwidth, 7 µA IQ, rail-to-rail I/O, and 125°C rating - making it the only option among the three qualified for 12 V industrial sensor nodes requiring both precision and extended temperature operation.
Availability
TLV2381IDR is available at Aetrix Electronics and suitable for portable medical devices, power monitoring systems, and smoke detectors requiring stable component supply across long production lifecycles and industrial temperature grades.
Supply support for TLV2381IDR 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 op-amps and low-power signal chains.
The TLV2381IDR belongs to TI's micropower rail-to-rail op-amp family, designed specifically for battery-powered instrumentation, sensor interfaces, and industrial monitoring systems demanding ultra-low IQ without sacrificing DC precision or AC performance.
FAQ
What is the maximum supply voltage for TLV2381IDR?
The absolute maximum supply voltage for TLV2381IDR is 16.5 V, but the recommended operating range is 2.7 V to 16 V for single-supply use. Exceeding 16.5 V risks permanent damage. The device supports dual-supply operation from ±1.35 V to ±8 V, making TLV2381IDR suitable for both low-voltage portable and higher-voltage industrial applications while maintaining rail-to-rail functionality across the full range.
Does TLV2381IDR support rail-to-rail output at 2.7 V supply?
Yes, TLV2381IDR delivers rail-to-rail output swing down to 120 mV from each rail at 2.7 V supply (25°C), and within 220 mV over the full –40°C to 125°C range. This capability ensures maximum signal dynamic range in low-voltage systems such as smoke detectors powered by two alkaline cells, where TLV2381IDR maintains usable output headroom without external level-shifting circuitry.
What is the input bias current specification for TLV2381IDR?
TLV2381IDR features a typical input bias current of 1 pA at 25°C, with a maximum of 100 pA at 70°C and 1000 pA at 125°C. This ultra-low IB stems from its BiMOS input stage and enables accurate amplification of high-impedance sources - for example, TLV2381IDR is routinely used in ionization chamber circuits for smoke detectors where input currents fall below 100 fA.
Is TLV2381IDR pin-compatible with other op-amps in SOIC-8 package?
TLV2381IDR uses a non-standard SOIC-8 pinout with three no-connect (NC) pins (1, 5, 8), differing from conventional single-op-amp SOIC-8 layouts. It is not pin-compatible with generic SOIC-8 op-amps like LM358 or TLV27L1. Designers must verify PCB footprint alignment and avoid assuming functional or physical interchangeability - TLV2381IDR requires its specific land pattern per TI's D0008A outline and IPC-7351 recommendations.
What thermal considerations apply to TLV2381IDR in SOIC-8 package?
TLV2381IDR in SOIC-8 (D package) has a junction-to-ambient thermal resistance (θJA) of 176°C/W on low-K test PCB. At 25°C ambient and 15 V supply, dissipation remains below 1 mW - well within safe limits. However, at 125°C ambient, maximum allowable power drops to 370 mW. Proper decoupling and ground-plane layout per TI's guidelines are essential to maintain thermal stability, especially in enclosed industrial enclosures where airflow is limited.
TLV2381IDR 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:
- 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
TLV2381IDR FAQ
1.How can I place an order for TLV2381IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2381IDR 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 TLV2381IDR reliable?
The price and inventory of TLV2381IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2381IDR is usually 5 days.
3.What payment methods are accepted for TLV2381IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2381IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2381IDR?
TLV2381IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2381IDR 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 TLV2381IDR?
For technical support, including TLV2381IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2381IDR requirements.
6.How does Aetrix verify that TLV2381IDR is sourced from the original manufacturer or authorized distributors?
All TLV2381IDR 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 TLV2381IDR meets industry standards.
7.What is the process for return or replacement of TLV2381IDR?
All TLV2381IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2381IDR, 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 TLV2381IDR part is unused and in its original packaging.
Return procedure for TLV2381IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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