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Texas Instruments TLV2451IP
- Part No.:
- TLV2451IP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLV2451IP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,556
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Product details
Overview
TLV2451IP 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, ±10 mA output drive, 23 µA supply current per channel, and operates from 2.7 V to 6 V - enabling high-precision signal conditioning in battery-powered medical sensors and patient monitoring front-ends.
For engineers reviewing the TLV2451IP datasheet, TLV2451IP pinout, TLV2451IP application, or TLV2451IP equivalent, this page provides verified package mapping (8-pin PDIP), confirmed rail-to-rail I/O behavior, shutdown-inactive status, and real-world design implications for low-noise, micropower analog signal chains.
Technical Context
The TLV2451IP implements a CMOS input stage with rail-to-rail input common-mode range (0 V to VDD) and rail-to-rail output swing (within 250 mV of rails at 2.5 mA load). Its 220 kHz gain-bandwidth product and 0.11 V/µs slew rate are specified at VDD = 5 V, supporting stable unity-gain operation with capacitive loads up to 1000 pF (56° phase margin).
No internal shutdown circuitry is present - unlike TLV2450/TLV2453/TLV2455 variants - making TLV2451IP a fixed-function, always-on op amp. It is fully characterized across −40°C to 125°C and supports single-supply operation down to 2.7 V with 106 dB PSRR and 80 dB CMRR at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 6 V - enables direct interface with Li-ion, 3.3 V, and 5 V logic rails without level-shifting. |
| Gain-Bandwidth Product | 220 kHz - sufficient for DC-coupled sensor amplification, thermocouple conditioning, and low-frequency filter stages. |
| Supply Current (per channel) | 23 µA - allows continuous operation for >1 year on a CR2032 coin cell in always-on wearable biosensors. |
| Input Offset Voltage | 20 µV (typ) - supports sub-100 µV system-level offset budgets in precision medical front-ends. |
| Output Drive Capability | ±10 mA - drives 10 kΩ loads to rail while maintaining linearity, suitable for driving ADC reference buffers or DAC outputs. |
| Rail-to-Rail I/O | Yes - maximizes dynamic range in 3 V systems, preserving >95% of full-scale signal swing at both input and output. |
| PSRR | 106 dB - rejects power-supply noise critical in mixed-signal PCBs with shared analog/digital rails. |
Pinout & Package
TLV2451IP is housed in an 8-pin plastic DIP (PDIP) package with 0.3-inch body width and through-hole mounting. Thermal resistance θJA = 104°C/W supports operation up to 125°C ambient when board layout includes adequate copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (1IN−) | Differential input node; high-impedance CMOS input (IIB = 0.5–5 nA) for precision feedback networks. |
| 2 | Non-Inverting Input (1IN+) | High-impedance input accepting signals from 0 V to VDD; enables true single-supply sensor interfacing. |
| 3 | Output (1OUT) | Push-pull output capable of sourcing/sinking ±10 mA while maintaining rail-to-rail swing. |
| 4 | Ground (GND) | Analog ground reference; must be star-connected to minimize noise coupling in mixed-signal layouts. |
| 5 | NC | No internal connection - left unconnected; no routing or thermal relief required. |
| 6 | Shutdown (1SHDN) | Not functional - TLV2451IP lacks shutdown logic; pin is internally disconnected and must be left floating or tied to VDD/GND. |
| 7 | VDD+ | Positive supply terminal; accepts 2.7–6 V; decoupling capacitor (0.1 µF ceramic) required within 5 mm. |
| 8 | NC | No internal connection - unused pin; no electrical or thermal impact if left unconnected. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3 V supply in portable ECG front-ends, eliminating need for dual supplies or level shifters. |
| Ultralow 23 µA supply current | Reduces quiescent power to 69 µW at 3 V - critical for multi-channel battery-operated data loggers. |
| 220 kHz GBW with 0.11 V/µs slew rate | Supports stable amplification of DC–200 Hz physiological signals (e.g., EEG, EMG) with <0.1% distortion. |
| 106 dB PSRR and 80 dB CMRR | Maintains accuracy in noisy industrial environments where supply ripple or common-mode interference exceeds 10 mV. |
| Specified from −40°C to 125°C | Validates performance in automotive cabin modules, industrial temperature transmitters, and outdoor medical devices. |
Applications
| Portable Patient Monitoring | Low-Power Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals (e.g., ECG leads) in handheld vital sign monitors powered by coin cells. IC Role / Device Role / Timing Role: Primary instrumentation amplifier stage with DC-coupled gain, providing rail-to-rail output swing into 10 kΩ ADC input. Use Value: 20 µV offset and 23 µA current enable >12-hour runtime and sub-10 µV system-referred offset without trimming. | Use Scenario: Buffering and scaling output of MEMS pressure sensors in wearable respiratory trackers. IC Role / Device Role / Timing Role: Rail-to-rail output buffer isolating sensor bridge from ADC, rejecting supply noise via 106 dB PSRR. Use Value: ±10 mA drive ensures stable settling into 100 nF anti-aliasing filters; 220 kHz GBW preserves step response fidelity. |
| Industrial Temperature Transmitter | Low-Voltage Data Acquisition Front-End |
Use Scenario: Conditioning PT100/RTD bridge outputs in 4–20 mA loop-powered field transmitters operating at 3.3 V. IC Role / Device Role / Timing Role: Precision gain stage with matched resistor feedback, referenced to system ground under wide temperature range. Use Value: −40°C to 125°C rating and 0.3 µV/°C offset drift ensure calibration stability over full industrial ambient range. | Use Scenario: Driving SAR ADC inputs in battery-powered environmental sensor nodes (CO₂, humidity, VOC). IC Role / Device Role / Timing Role: Low-noise, low-power driver ensuring <1 LSB error during ADC acquisition windows. Use Value: 49 nV/√Hz input noise and rail-to-rail swing maximize SNR and effective resolution in 12–16 bit systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461IP | Higher 550 µA supply current, 6.4 MHz GBW, same 8-pin PDIP package and rail-to-rail I/O. | Targeted at higher-speed signal paths (e.g., active filters, fast-settling DAC buffers) where power budget allows. | Select TLV2461IP only when >1 MHz bandwidth is required; TLV2451IP remains optimal for micropower DC–200 Hz use cases. |
| OPA344PA | 25 µA supply current, 1 MHz GBW, rail-to-rail output only (not input), SO-8 package (not PDIP). | Suitable for space-constrained PCBs where input common-mode range beyond GND is not needed. | Choose OPA344PA for compact surface-mount designs requiring slightly higher speed but sacrificing true rail-to-rail input capability. |
Compared with TLV2451IP, TLV2461IP trades 24× higher supply current for 29× greater bandwidth, while OPA344PA offers modest speed uplift in SO-8 but forfeits rail-to-rail input - making TLV2451IP uniquely balanced for ultralow-power, full-range analog signal conditioning in through-hole industrial and medical systems.
Availability
TLV2451IP is available at Aetrix Electronics and suitable for portable medical equipment, industrial temperature transmitters, and low-voltage data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2451IP 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, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TLV245x family was designed specifically for ultralow-power, rail-to-rail signal conditioning in battery-operated medical, sensor, and portable instrumentation applications - prioritizing supply current efficiency without compromising ac performance or output drive.
FAQ
Does TLV2451IP include a shutdown function?
No, TLV2451IP does not feature a shutdown mode. Unlike TLV2450/TLV2453/TLV2455 variants, TLV2451IP has no functional shutdown pin - Pin 6 (1SHDN) is internally disconnected. The device operates continuously whenever VDD is applied. This simplifies biasing in always-on applications like patient monitors but precludes dynamic power gating.
What is the maximum load capacitance TLV2451IP can drive stably?
TLV2451IP maintains 56° phase margin with 1000 pF capacitive load at unity gain (RL = 10 kΩ), per Figure 24 in the datasheet. For loads >100 pF, a series isolation resistor (10–100 Ω) is recommended between output and capacitance to preserve stability. TLV2451IP is not unity-gain compensated for direct 10 nF capacitor driving.
Is TLV2451IP pin-compatible with other TLV245x variants in PDIP packages?
TLV2451IP shares the same 8-pin PDIP footprint and pinout as TLV2452IP (dual) and TLV2454IP (quad), but differs from TLV2450IP (6-pin SOT-23) and TLV2453IP (14-pin PDIP). Pin-for-pin compatibility exists only among 8-pin PDIP TLV245x members - however, TLV2451IP lacks shutdown functionality present in TLV2450/TLV2453/TLV2455, so system-level validation is required before substitution.
What is the typical input offset voltage drift over temperature for TLV2451IP?
The temperature coefficient of input offset voltage (αVIO) for TLV2451IP is 0.3 µV/°C, measured at VDD = ±1.5 V with VIC = 0 and VO = 0. Over the full −40°C to 125°C range, this results in ≤50 µV total offset drift (165°C × 0.3 µV/°C), complementing its 20 µV typical room-temperature offset for high-accuracy DC measurements.
Can TLV2451IP operate from a single 2.7 V supply with rail-to-rail input and output?
Yes, TLV2451IP is fully specified for single-supply operation from 2.7 V to 6 V. Its rail-to-rail input accepts common-mode voltages from 0 V to VDD, and its output swings to within 250 mV of each rail under 2.5 mA load - delivering >2.2 V peak-to-peak swing at 2.7 V supply, which is essential for maximizing dynamic range in low-voltage portable systems.
TLV2451IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLV2451IP FAQ
1.How can I place an order for TLV2451IP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2451IP 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 TLV2451IP reliable?
The price and inventory of TLV2451IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2451IP is usually 5 days.
3.What payment methods are accepted for TLV2451IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2451IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2451IP?
TLV2451IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2451IP 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 TLV2451IP?
For technical support, including TLV2451IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2451IP requirements.
6.How does Aetrix verify that TLV2451IP is sourced from the original manufacturer or authorized distributors?
All TLV2451IP 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 TLV2451IP meets industry standards.
7.What is the process for return or replacement of TLV2451IP?
All TLV2451IP units undergo pre-shipment inspection (PSI). If there is an issue with TLV2451IP, 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 TLV2451IP part is unused and in its original packaging.
Return procedure for TLV2451IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2451IP Tags
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