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Texas Instruments TLV2451AIDR
- Part No.:
- TLV2451AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2451AIDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,841
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Product details
Overview
TLV2451AIDR from Texas Instruments is a single-channel rail-to-rail input/output operational amplifier optimized for ultralow-power, low-voltage portable systems. It delivers 220 kHz gain-bandwidth product, 23 µA supply current per channel, ±10 mA output drive, 20 µV typical input offset voltage, and operates from 2.7 V to 6 V - enabling precision signal conditioning in battery-powered medical sensors and data acquisition front-ends.
For engineers reviewing the TLV2451AIDR datasheet, TLV2451AIDR pinout, TLV2451AIDR application, or TLV2451AIDR equivalent, key selection criteria include its rail-to-rail I/O swing at micropower supply current, shutdown mode (16 nA/channel), SOT-23-5 packaging, and guaranteed −40°C to 125°C operation - critical for space-constrained, thermally demanding embedded analog stages.
Technical Context
The TLV2451AIDR employs a CMOS input stage with rail-to-rail common-mode input range (0 V to VDD) and rail-to-rail output swing (within 250 mV of rails at 2.5 mA load). Its internal architecture supports stable unity-gain operation with 56° phase margin into 1000 pF capacitive loads, and features integrated shutdown control that places the output in high-impedance state while reducing quiescent current to 16 nA/channel.
Specified across −40°C to 125°C, it maintains 1000 µV max input offset voltage and 106 dB PSRR at 5 V supply. The device achieves 0.11 V/µs slew rate and 220 kHz GBW at 5 V, with THD+N < 0.18% at 1 kHz under AV = 10, making it suitable for DC-coupled sensor interfaces requiring accuracy and low noise without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 6 V - enables direct operation from single Li-ion cell or dual alkaline batteries without regulation. |
| Supply Current (per channel) | 23 µA typ - allows >1-year battery life in always-on wearable biosensors with 10 µA system budget. |
| Gain-Bandwidth Product | 220 kHz - supports anti-aliasing filtering and sensor amplification up to ~20 kHz with stable unity-gain configuration. |
| Input Offset Voltage | 20 µV typ / 1000 µV max - ensures ≤0.1% error in 100 mV full-scale medical electrode signal paths. |
| Output Drive Capability | ±10 mA - drives 10 kΩ loads to rail with <250 mV headroom, eliminating need for external buffers in ADC driver stages. |
| Power Supply Rejection Ratio | 106 dB - rejects ripple from noisy switching regulators in mixed-signal PCBs without additional filtering. |
| Rail-to-Rail I/O | Full swing from 0 V to VDD on both inputs and outputs - maximizes dynamic range in 3.3 V or lower supply systems. |
Pinout & Package
TLV2451AIDR is housed in a 5-pin SOT-23 package (DBV), with exposed pad not electrically connected. This ultra-small surface-mount outline measures 2.9 mm × 1.6 mm × 1.1 mm and supports tape-and-reel automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers rail-to-rail voltage swing; high-impedance during shutdown when SHDN = low. |
| 2 - GND | Analog ground reference | Primary return path for input bias currents and output load; must be low-impedance connection to system AGND. |
| 3 - IN+ | Non-inverting input | CMOS input with 0 V to VDD common-mode range; <5 nA bias current enables high-impedance sensor interfacing. |
| 4 - VDD+ | Positive supply | Accepts 2.7–6 V; decoupling capacitor (0.1 µF) required within 2 mm for stability and PSRR performance. |
| 5 - IN− | Inverting input | Differential input node; matched to IN+ for <1000 µV offset; used for feedback network attachment in closed-loop configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3.3 V or lower supply rails in single-supply instrumentation, maximizing SNR without level-shifting circuitry. |
| Ultralow 23 µA supply current | Reduces self-heating and extends battery life in continuous-monitoring devices such as pulse oximeters and ECG patches. |
| Shutdown mode (16 nA/channel) | Allows system-level power gating; output enters high-Z state, enabling multiplexed sensor front-ends without signal contention. |
| Guaranteed operation to 125°C | Validated for automotive cabin electronics and industrial motor-control feedback loops where ambient temperature exceeds 85°C. |
| 220 kHz GBW with 0.11 V/µs slew rate | Supports stable amplification of low-frequency biosignals (ECG, EEG) while rejecting 50/60 Hz interference via active filtering. |
Applications
| Portable Medical Sensors | Patient Monitoring Front-Ends |
|---|---|
|
Use Scenario: Amplifying microvolt-level biopotential signals (e.g., ECG leads) in handheld diagnostic tools with coin-cell power. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with rail-to-rail output driving 12-bit SAR ADC reference buffer. Use Value: 20 µV offset and 106 dB PSRR ensure <0.05% measurement error despite unregulated battery decay and board-level switching noise. |
Use Scenario: Signal conditioning for multi-parameter patient monitors (SpO₂, respiration, temperature) in hospital-grade portable units. IC Role / Device Role / Timing Role: Low-noise transducer interface for thermistor and photodiode arrays, operating continuously at −40°C to 125°C. Use Value: Guaranteed 1000 µV max offset and 23 µA current enable 3-year field calibration stability and <10 µA total analog subsystem draw. |
| Data Acquisition Systems | Battery-Powered IoT Nodes |
|
Use Scenario: Front-end amplification for 16-bit delta-sigma ADCs in industrial environmental sensors (pressure, humidity, gas). IC Role / Device Role / Timing Role: Programmable-gain amplifier (PGA) input stage with shutdown control synchronized to ADC conversion cycles. Use Value: 220 kHz GBW supports anti-aliasing filter design with <1% passband ripple; 16 nA shutdown current minimizes idle power in duty-cycled sampling. |
Use Scenario: Analog signal chain in LPWAN edge nodes (LoRaWAN/NB-IoT) measuring soil moisture or structural strain over multi-year deployments. IC Role / Device Role / Timing Role: Sensor excitation and differential signal amplification preceding ultra-low-power MCU ADC. Use Value: SOT-23-5 footprint saves PCB area; 2.7 V minimum supply allows direct connection to aging primary lithium cells down to 2.8 V nominal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA316IDBVR | Higher 10 MHz GBW and 6.5 V/µs slew rate, but 400 µA supply current - 17× higher than TLV2451AIDR. | Targeted at higher-speed signal chains (e.g., active filters, fast-settling DAC buffers); unsuitable for sub-100 µA power budgets. | Select OPA316IDBVR only when bandwidth >1 MHz is required and power is secondary; TLV2451AIDR remains optimal for micropower precision. |
| MCP6001T-E/OT | Similar 1 µA supply current and rail-to-rail I/O, but only 1 kHz GBW and 0.0015 V/µs slew rate - 220× lower bandwidth than TLV2451AIDR. | Designed for ultra-low-frequency applications (e.g., thermistor biasing, slow-moving sensor offsets); cannot support 20 kHz sensor bandwidths. | Choose MCP6001T-E/OT for cost-sensitive, sub-1 kHz applications; TLV2451AIDR provides best-in-class GBW/power tradeoff for 10–100 kHz analog front-ends. |
Compared with OPA316IDBVR and MCP6001T-E/OT, TLV2451AIDR uniquely balances 220 kHz bandwidth and 23 µA supply current - filling a critical gap between nanopower and high-speed op-amps for battery-operated precision measurement systems.
Availability
TLV2451AIDR is available at Aetrix Electronics and suitable for portable medical sensors, patient monitoring front-ends, and battery-powered IoT nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2451AIDR 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 high-reliability, energy-efficient IC design.
The TLV245x family was engineered specifically for micropower, rail-to-rail signal conditioning in portable and industrial sensing applications - delivering unprecedented AC performance at sub-25 µA supply currents.
FAQ
What is the operating temperature range for TLV2451AIDR?
The TLV2451AIDR is rated for operation from −40°C to +125°C, as confirmed by TI's SLOS218F datasheet Section "Recommended Operating Conditions". This extended industrial temperature range makes TLV2451AIDR suitable for under-hood automotive sensors, industrial motor controllers, and outdoor medical equipment where ambient temperatures exceed standard commercial limits. The A-suffix in TLV2451AIDR explicitly denotes this −40°C to 125°C grade.
Does TLV2451AIDR support rail-to-rail input and output?
Yes, TLV2451AIDR provides true rail-to-rail input and output operation, as stated in the device description and verified in Electrical Characteristics tables. Its input common-mode range spans 0 V to VDD, and output swings within 250 mV of each rail under 2.5 mA load - enabling full dynamic range utilization in 3.3 V or lower single-supply systems without external level-shifting components.
What is the shutdown current consumption of TLV2451AIDR?
TLV2451AIDR draws 16 nA per channel in shutdown mode, as specified in the "Electrical Characteristics" table (IDD(SHDN)) under VDD = 3 V to 5 V conditions. During shutdown, the output enters high-impedance state, allowing safe multiplexing or isolation in multi-channel sensor systems. This ultra-low shutdown current is critical for extending battery life in intermittently active IoT endpoints.
Is TLV2451AIDR pin-compatible with other TLV245x variants?
No - TLV2451AIDR uses a 5-pin SOT-23 (DBV) package with pinout OUT-GND-IN+-VDD+-IN−, whereas TLV2450 includes a dedicated SHDN pin (6-pin DBV), and dual/quad versions use 8-, 10-, or 14-pin packages. Pin compatibility is limited to identical variants (e.g., TLV2451CDR, TLV2451IDR); cross-family substitution requires PCB layout revision due to differing pin counts and functions.
What load capacitance can TLV2451AIDR safely drive without instability?
TLV2451AIDR maintains 56° phase margin with up to 1000 pF capacitive load when configured as unity-gain follower with RL = 10 kΩ, as shown in Figure 24 of the datasheet. For loads >100 pF, TI recommends adding a small series resistor (10–50 Ω) between amplifier output and capacitive node to preserve stability - a standard practice for driving ADC input capacitors or long PCB traces.
TLV2451AIDR 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:
- 0.11V/µs
- Gain Bandwidth Product:
- 220 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 23µA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV2451AIDR FAQ
1.How can I place an order for TLV2451AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2451AIDR 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 TLV2451AIDR reliable?
The price and inventory of TLV2451AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2451AIDR is usually 5 days.
3.What payment methods are accepted for TLV2451AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2451AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2451AIDR?
TLV2451AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2451AIDR 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 TLV2451AIDR?
For technical support, including TLV2451AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2451AIDR requirements.
6.How does Aetrix verify that TLV2451AIDR is sourced from the original manufacturer or authorized distributors?
All TLV2451AIDR 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 TLV2451AIDR meets industry standards.
7.What is the process for return or replacement of TLV2451AIDR?
All TLV2451AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2451AIDR, 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 TLV2451AIDR part is unused and in its original packaging.
Return procedure for TLV2451AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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