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Texas Instruments TLV2781AIDR
- Part No.:
- TLV2781AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2781AIDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,908
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Product details
Overview
TLV2781AIDR from Texas Instruments is a single-channel rail-to-rail input/output operational amplifier optimized for low-voltage, high-speed applications. It operates from 1.8 V to 3.6 V, delivers 8 MHz gain-bandwidth, 4.8 V/µs slew rate at 2.7 V, and draws only 650 µA per channel - enabling precision signal conditioning in battery-powered data converters and portable instrumentation.
For engineers reviewing the TLV2781AIDR datasheet, TLV2781AIDR pinout, TLV2781AIDR application, or TLV2781AIDR equivalent, key selection criteria include its −40°C to 125°C industrial temperature rating, 250 µV max input offset voltage (A-grade), shutdown capability, and SOT-23-6 package compatibility with space-constrained PCB layouts.
Technical Context
The TLV2781AIDR implements a CMOS input stage with rail-to-rail input common-mode range extending to −0.2 V below ground and +0.2 V above VDD, paired with a push-pull output stage enabling full-swing operation into 2 kΩ loads. Its 8 MHz unity-gain bandwidth is achieved with only 650 µA supply current, reflecting optimized transconductance-to-power ratio.
It integrates an active shutdown function (SHDN pin) that reduces supply current to ≤1.4 µA per channel while placing the output in high-impedance state - critical for power-gated sensor front-ends and multi-channel systems requiring dynamic channel enable/disable control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 3.6 V - supports single-cell Li-ion (3.0–3.6 V) and dual-cell NiMH (2.4 V) or LiFePO₄ (3.2 V) batteries without regulation. |
| Gain-Bandwidth Product | 8 MHz - enables stable closed-loop operation up to ~700 kHz in unity-gain buffer configuration with 10 pF load. |
| Slew Rate | 4.8 V/µs at VDD = 2.7 V - supports <1.7 µs settling to 0.1% for 1 V step, suitable for driving SAR ADC inputs. |
| Input Offset Voltage | 250 µV max at 25°C (A-grade) - ensures ≤0.5 mV error in 2 V full-scale 12-bit systems without trimming. |
| Supply Current per Channel | 650 µA typical - allows >1000-channel operation within 650 mA total analog supply budget. |
| Input Noise Voltage | 9 nV/√Hz at 10 kHz - preserves SNR in audio preamps and sensor amplifiers with bandwidth <100 kHz. |
| Shutdown Current | ≤1.4 µA per channel - extends battery life in intermittent-sampling systems (e.g., IoT nodes). |
Pinout & Package
SOT-23-6 package: ultra-small surface-mount outline (2.9 mm × 1.6 mm × 1.1 mm), thermally enhanced for high-density layouts; lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Rail-to-rail voltage source capable of sourcing/sinking ±10 mA; high-impedance during shutdown. |
| 2 (IN−) | Inverting Input | Differential node with 2.5 pA bias current; requires matched trace impedance for noise rejection. |
| 3 (IN+) | Non-inverting Input | Differential node with 2.5 pA bias current; accepts common-mode voltages from −0.2 V to VDD+0.2 V. |
| 4 (GND) | Analog Ground | Primary reference for input common-mode and output swing; must connect to low-impedance ground plane. |
| 5 (SHDN) | Shutdown Control | Active-low logic input; <0.6 V disables amplifier (≤1.4 µA IDD); ≥2 V enables normal operation. |
| 6 (VDD) | Positive Supply | Single-supply input (1.8–3.6 V); requires local 0.1 µF ceramic decoupling placed ≤2 mm from pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 1.8 V systems - e.g., 0–1.8 V output swing into 2 kΩ load at 25°C. |
| Industrial Temp Range | Specified from −40°C to +125°C - qualified for under-hood automotive sensors and industrial PLC analog modules. |
| Low Input Bias Current | 2.5 pA typical - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiode TIA feedback). |
| Shutdown Function | Reduces quiescent current by >99.8% - enables microamp-level sleep modes in always-on monitoring circuits. |
| Low-Voltage Operation | Functional down to 1.8 V supply - eliminates need for LDO in coin-cell (1.5 V) or single-LiFePO₄ (3.2 V) powered designs. |
Applications
| Portable Data Acquisition | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Battery-powered handheld multimeter acquiring 12-bit voltage/current measurements with 10 kSPS sampling. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between high-impedance DMM input divider and SAR ADC reference input. Use Value: 250 µV max VIO and 9 nV/√Hz noise ensure <0.025% measurement error and >70 dB SNR at 10 kHz bandwidth. | Use Scenario: Front-end amplifier for exhaust gas oxygen (EGO) sensor in engine control unit operating at 125°C ambient. IC Role / Device Role / Timing Role: Low-drift signal conditioner converting Nernst cell voltage (0.1–1.0 V) to 0–3.3 V ADC range. Use Value: −40°C to 125°C guaranteed operation and 8 µV/°C tempco maintain <±3 mV offset drift over full temperature range. |
| Wearable Biopotential Monitoring | Industrial Process Transmitter |
Use Scenario: ECG electrode amplifier in chest-worn patch monitor using 3.0 V coin cell with 3-year battery life target. IC Role / Device Role / Timing Role: First-stage gain block with shutdown-controlled power gating between heartbeats. Use Value: 650 µA active current + 1.4 µA shutdown current enables >200 hr continuous operation or >10 years intermittent use. | Use Scenario: 4–20 mA loop transmitter for pressure sensor in hazardous-area refinery control system. IC Role / Device Role / Timing Role: Voltage-to-current converter input stage with rail-to-rail input accommodating 0–5 V sensor output. Use Value: VICR from −0.2 V to VDD+0.2 V allows direct interface to unbuffered ratiometric bridge sensors without level-shifting circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Zero-drift architecture; 0.1 µV/°C offset drift vs TLV2781AIDR's 8 µV/°C; 350 kHz GBW vs 8 MHz. | Better DC accuracy for <1 Hz sensor signals; insufficient bandwidth for >10 kHz data acquisition. | Select OPA333AIDBVR when ultra-low drift dominates over speed; avoid for ADC driver or active filter roles. |
| TLV9001IDBVR | Higher 1-MHz GBW; 1.2 V/µs slew rate; 60 µA supply current; no shutdown pin. | Lower power but slower response; lacks SHDN for power-gated architectures. | Select TLV9001IDBVR for always-on, low-quiescent systems where shutdown is unnecessary and cost is constrained. |
Compared with OPA333AIDBVR and TLV9001IDBVR, the TLV2781AIDR uniquely balances 8 MHz bandwidth, rail-to-rail I/O, shutdown control, and industrial temperature rating in a 6-pin SOT-23 - making it optimal for portable, battery-sensitive, wide-temperature mixed-signal interfaces.
Availability
TLV2781AIDR is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, wearable health monitors, and industrial process transmitters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2781AIDR 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 delivering analog and embedded processing solutions, with over 50 years of innovation in precision amplifiers and low-power signal chain components.
The TLV278x family was designed specifically for ultra-low-voltage, high-speed operational amplifier applications in portable and industrial systems - emphasizing rail-to-rail performance, shutdown efficiency, and robustness across −40°C to +125°C.
FAQ
What is the maximum recommended supply voltage for TLV2781AIDR?
The absolute maximum supply voltage for TLV2781AIDR is 4 V, but the recommended operating range is strictly 1.8 V to 3.6 V per the datasheet. Exceeding 3.6 V risks parametric shift or reliability degradation, especially at high temperature. Operation at 3.6 V is fully characterized and supports rail-to-rail output swing into 2 kΩ loads.
Does TLV2781AIDR support true rail-to-rail input common-mode range?
Yes, TLV2781AIDR supports a rail-to-rail input common-mode voltage range from −0.2 V to VDD+0.2 V. This allows direct interfacing with signals below ground (e.g., AC-coupled sensors) and above VDD (e.g., reference buffers), confirmed in Figure 1 and Figure 2 of the SLOS245E datasheet across 1.8 V and 2.7 V supplies.
What is the typical shutdown current of TLV2781AIDR and how is it controlled?
The typical shutdown current of TLV2781AIDR is 900 nA per channel at 25°C, rising to ≤1.4 µA over −40°C to +125°C. Shutdown is activated by pulling the SHDN pin (Pin 5) to <0.6 V; the amplifier resumes normal operation when SHDN ≥2 V or is left floating (with care to avoid leakage-induced false shutdown).
Can TLV2781AIDR drive capacitive loads without external compensation?
TLV2781AIDR is stable for capacitive loads ≤10 pF with 2 kΩ load resistance. For larger capacitive loads (e.g., ADC input capacitance >10 pF), a series null resistor (RNULL) of 10–50 Ω is required at the output per Figure 30 in the datasheet to maintain phase margin >58° and prevent oscillation.
What is the input offset voltage specification for TLV2781AIDR and how does it differ from standard TLV2781IDR?
TLV2781AIDR has a maximum input offset voltage of 2000 µV over full temperature range (−40°C to +125°C) and 250 µV at 25°C, whereas standard TLV2781IDR is specified at 3000 µV max over temperature. The "A" suffix denotes tighter initial VIO grading, directly improving DC accuracy in precision gain stages without calibration.
TLV2781AIDR 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:
- 5V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 650µA
- Current - Output / Channel:
- 23 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 3.6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV2781AIDR FAQ
1.How can I place an order for TLV2781AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2781AIDR 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 TLV2781AIDR reliable?
The price and inventory of TLV2781AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2781AIDR is usually 5 days.
3.What payment methods are accepted for TLV2781AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2781AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2781AIDR?
TLV2781AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2781AIDR 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 TLV2781AIDR?
For technical support, including TLV2781AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2781AIDR requirements.
6.How does Aetrix verify that TLV2781AIDR is sourced from the original manufacturer or authorized distributors?
All TLV2781AIDR 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 TLV2781AIDR meets industry standards.
7.What is the process for return or replacement of TLV2781AIDR?
All TLV2781AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2781AIDR, 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 TLV2781AIDR part is unused and in its original packaging.
Return procedure for TLV2781AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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