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Texas Instruments TLV2444CD
- Part No.:
- TLV2444CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2444CD.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:204
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Product details
Overview
TLV2444CD from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for low-voltage single-supply operation (2.7 V to 10 V), featuring 1.8 MHz gain-bandwidth product, 750 µA per channel supply current, 16 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing enabling full dynamic range in ADC interface circuits.
For engineers reviewing the TLV2444CD datasheet, TLV2444CD pinout, TLV2444CD application, or TLV2444CD equivalent, this page delivers verified specifications, package-validated pin functions, real-world use cases in sensor signal conditioning and portable instrumentation, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The TLV2444CD uses Advanced LinCMOS™ process technology to achieve extended common-mode input voltage range (0 V to 4.25 V min at 5 V supply) without phase inversion near supply rails, combined with rail-to-rail output capability delivering >99% of supply voltage swing into 600 Ω loads.
It operates across 0°C to 70°C ambient temperature, supports dual- or single-supply configurations, and exhibits 70 dB CMRR and 95 dB PSRR at 25°C - critical for precision DC-coupled amplification in battery-powered systems where supply rejection and input headroom directly impact measurement accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V - enables direct operation from single Li-ion or dual alkaline cells without regulation. |
| Gain-Bandwidth Product | 1.8 MHz typ - supports stable unity-gain buffering and closed-loop gains up to ~100 at audio frequencies. |
| Input Offset Voltage | 2.5 mV max at 25°C - suitable for medium-precision DC amplification (e.g., thermistor, RTD front-ends). |
| Output Drive Capability | 600 Ω load drive - ensures stable rail-to-rail output swing into telecom and data-acquisition interface impedances. |
| Supply Current per Channel | 750 µA typ - allows four-channel operation under 3 mA total, ideal for space-constrained portable devices. |
| Input Bias Current | 1 pA typ - preserves signal integrity when amplifying high-impedance sources like piezoelectric sensors. |
| Common-Mode Input Range | 0 V to 4.25 V min at 5 V supply - accepts inputs down to ground, eliminating level-shifting in single-supply systems. |
Pinout & Package
TLV2444CD is housed in an 14-pin SOIC (Small Outline Integrated Circuit) package (D package), with standard quad op-amp pinout compatible with industry layout practices and thermal dissipation rating of 725 mW at TA ≤ 25°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8, 12 | Inverting Input (–) | Accepts differential input signals for each of the four independent amplifiers. |
| 2, 6, 9, 13 | Non-inverting Input (+) | Provides reference path for feedback configuration; high-impedance node (1000 GΩ). |
| 3, 7, 10, 14 | Output | Delivers rail-to-rail output swing (e.g., 0.02 V to 4.97 V at 5 V supply) into 600 Ω loads. |
| 4 | Ground / VDD– | Common return for all channels; must be low-impedance connection to minimize noise coupling. |
| 11 | Positive Supply / VDD+ | Single-supply input (2.7–10 V); decoupling capacitor required within 1 cm for stability. |
Key Features
| Feature | Design Value |
|---|---|
| No Phase Inversion | Prevents output latch-up when common-mode input reaches supply rails - eliminates need for external clamping diodes. |
| Rail-to-Rail Output | Enables maximum signal swing (e.g., 0.01 V to 4.99 V at 5 V) for improved SNR in ADC driver applications. |
| Low Input Noise | 16 nV/√Hz at 1 kHz - preserves resolution in low-level sensor signal amplification (e.g., strain gauges, pH electrodes). |
| Extended Common-Mode Range | 0 V to VDD–1 V - allows direct interfacing with grounded-sensor outputs without level-shifting circuitry. |
| Low Power Consumption | 750 µA per channel - supports always-on monitoring in battery-operated IoT endpoints with multi-day runtime. |
Applications
| Instrumentation Signal Conditioning | Portable Medical Sensors |
|---|---|
Use Scenario: Amplifying low-amplitude analog outputs from thermistors, RTDs, or bridge-based pressure transducers in handheld test equipment. IC Role / Device Role / Timing Role: Quad-channel DC-coupled amplifier providing gain, offset correction, and rail-to-rail output drive into 12-bit SAR ADCs. Use Value: 2.5 mV max input offset and 1 pA bias current ensure <0.1% gain error and minimal loading on high-Z sensor elements. | Use Scenario: Front-end amplification for ECG, pulse oximetry, or glucose monitor analog signal chains powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power quad op-amp configured as buffer, filter, and level shifter in ultra-low-power wearable health monitors. Use Value: 750 µA per channel supply current enables four-channel analog processing under 3 mA total, extending battery life beyond 7 days. |
| Industrial Process Monitoring | ADC Interface Driver |
Use Scenario: Signal conditioning for 4–20 mA loop receivers and isolated voltage/current sensing in PLC I/O modules. IC Role / Device Role / Timing Role: Precision amplifier stage converting isolated analog signals to ADC-compatible levels while rejecting common-mode noise. Use Value: 70 dB CMRR and 95 dB PSRR maintain accuracy despite noisy industrial supply rails and ground shifts. | Use Scenario: Driving the input of successive-approximation (SAR) or sigma-delta ADCs in data acquisition systems requiring wide dynamic range. IC Role / Device Role / Timing Role: Rail-to-rail output buffer ensuring full-scale utilization of ADC reference voltage without clipping. Use Value: 600 Ω output drive capability sustains 0.1% settling to 12-bit accuracy within 1.5 µs, matching typical SAR ADC acquisition windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail output operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2444CPW | TSSOP-14 package (4.4 mm × 5 mm), 525 mW power rating at 25°C - smaller footprint but lower thermal margin than SOIC-D. | Better suited for space-constrained PCBs where board area is prioritized over thermal headroom. | Select TLV2444CPW when layout density outweighs continuous high-load operation; verify thermal derating above 70°C ambient. |
| OPA2340UA | Higher GBW (5.5 MHz), lower noise (8 nV/√Hz), but higher supply current (800 µA/channel) and narrower common-mode range (0.3 V below V+). | Preferred for higher-speed sensor interfaces (e.g., ultrasonic transducers) where bandwidth dominates power budget. | Choose OPA2340UA only when >2 MHz bandwidth is mandatory; TLV2444CD remains optimal for sub-2 MHz, ultra-low-power, rail-compatible designs. |
Compared with TLV2444CPW and OPA2340UA, the TLV2444CD offers the best balance of SOIC thermal robustness, guaranteed 0-V common-mode input, and lowest quiescent current among TI's quad rail-to-rail output op-amps rated for 0°C to 70°C operation.
Availability
TLV2444CD is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, and battery-powered instrumentation requiring stable component supply, long-term production continuity, and RoHS-compliant packaging.
Supply support for TLV2444CD 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 50 years of innovation in precision amplifiers and power management ICs.
The TLV2444CD belongs to TI's Advanced LinCMOS™ rail-to-rail output op-amp family, designed specifically for low-voltage, low-power signal conditioning in portable and industrial systems where supply headroom and output swing are constrained.
FAQ
What is the operating temperature range for the TLV2444CD?
The TLV2444CD is specified for operation from 0°C to 70°C ambient temperature (C-suffix grade). This range is validated per TI's SLOS169H datasheet and applies to all electrical parameters including input offset voltage, CMRR, and output drive capability. It is not rated for automotive or extended industrial temperature grades - those require TLV2444I or TLV2444Q variants.
Does the TLV2444CD support true rail-to-rail input operation?
No, the TLV2444CD features rail-to-rail *output* but not rail-to-rail *input*. Its common-mode input voltage range extends from VDD– (ground) to VDD–1 V at 5 V supply - meaning it accepts inputs down to 0 V but cannot handle signals within 1 V of the positive rail. This is explicitly defined in the "Recommended Operating Conditions" table of the TLV2444CD datasheet.
Can the TLV2444CD drive a 1000 Ω load while maintaining rail-to-rail output swing?
Yes - the TLV2444CD guarantees rail-to-rail output swing into 600 Ω loads per the datasheet, and driving a 1000 Ω load improves output voltage compliance further. At 5 V supply and 25°C, VOH ≥ 4.0 V and VOL ≤ 0.8 V into 1 kΩ, achieving >95% of full-scale swing. Performance degrades only under heavy capacitive loading (>100 pF) or elevated temperature.
Is the TLV2444CD pin-compatible with other quad op-amps in SOIC-14 packages?
The TLV2444CD follows the standard quad op-amp pinout (pin 1 = A-out, pin 2 = A–, pin 3 = A+, etc.), matching industry conventions used by LM324, TL084, and OPA4340. However, electrical compatibility requires verification of supply range, input/output swing, and stability criteria - pinout alignment alone does not guarantee drop-in replacement.
What is the maximum capacitive load the TLV2444CD can drive without instability?
The TLV2444CD is stable with up to 100 pF capacitive load when driving a 600 Ω resistor, as confirmed by phase margin measurements (65° at unity gain). Driving >100 pF directly risks peaking or oscillation; for larger loads, isolate with a series resistor (≥100 Ω) or use a dedicated buffer stage. This limit is documented in the "Operating Characteristics" section of the TLV2444CD datasheet.
TLV2444CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.4V/µs
- Gain Bandwidth Product:
- 1.81 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 750µA (x4 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLV2444CD FAQ
1.How can I place an order for TLV2444CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2444CD 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 TLV2444CD reliable?
The price and inventory of TLV2444CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2444CD is usually 5 days.
3.What payment methods are accepted for TLV2444CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2444CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2444CD?
TLV2444CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2444CD 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 TLV2444CD?
For technical support, including TLV2444CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2444CD requirements.
6.How does Aetrix verify that TLV2444CD is sourced from the original manufacturer or authorized distributors?
All TLV2444CD 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 TLV2444CD meets industry standards.
7.What is the process for return or replacement of TLV2444CD?
All TLV2444CD units undergo pre-shipment inspection (PSI). If there is an issue with TLV2444CD, 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 TLV2444CD part is unused and in its original packaging.
Return procedure for TLV2444CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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