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Texas Instruments TLV2241CD
- Part No.:
- TLV2241CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2241CD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,193
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Product details
Overview
TLV2241CD from Texas Instruments is a single-channel micropower rail-to-rail input/output operational amplifier in SOIC-8 package, delivering 1 µA/channel supply current, 5.5 kHz gain bandwidth product, and 600 µV typical input offset voltage at 2.7 V. It operates from 2.5 V to 12 V and supports commercial temperature range (0°C to 70°C), making it suitable for ultra-low-power sensor signal conditioning in battery-powered instrumentation.
For engineers reviewing the TLV2241CD datasheet, TLV2241CD pinout, TLV2241CD application, or TLV2241CD equivalent, this page provides verified electrical specifications, validated SOIC-8 terminal mapping, real-world use cases in Li-ion–powered systems, and two confirmed alternative op-amps with documented functional trade-offs.
Technical Context
The TLV2241CD employs CMOS input stage architecture enabling ultralow input bias current (≤550 pA) and rail-to-rail common-mode input range (0 V to VCC). Its output stage delivers rail-to-rail swing with ±200 µA drive capability and maintains stability with capacitive loads up to 100 pF.
Designed for single-supply operation, the device achieves 100 dB CMRR and 100 V/mV open-loop gain at 2.7 V, supporting precision DC-coupled amplification in high-impedance sensor interfaces where megaohm-level feedback networks are used.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 1 µA per channel - enables multi-year battery life in always-on IoT sensor nodes. |
| Gain Bandwidth Product | 5.5 kHz - sufficient for DC to low-frequency (<1 kHz) signal conditioning of thermistors, strain gauges, and pH sensors. |
| Input Offset Voltage | 600 µV typical (3 mV max) - ensures <±1 LSB error in 12-bit ADC front-ends with gain ≤10. |
| Rail-to-Rail I/O | Input common-mode range 0 V to VCC; output swing within 180 mV of rails - maximizes dynamic range in 3.3 V or 2.7 V systems. |
| Supply Voltage Range | 2.5 V to 12 V - compatible with single-cell Li-ion (2.7–4.2 V), 3.3 V logic, and 5 V/12 V industrial rails. |
| Input Bias Current | ≤550 pA (full temp range) - allows use with >10 MΩ source impedances without significant DC error. |
| PSRR | ≥65 dB (2.7–5 V) - rejects noise from noisy digital supplies in mixed-signal PCBs. |
Pinout & Package
TLV2241CD is housed in an 8-pin SOIC (D) package with standard JEDEC outline, 1.27 mm pitch, and 4.9 mm × 3.9 mm footprint. Thermal resistance θJA = 176 °C/W enables operation up to 70°C ambient without heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ±200 µA into 500 kΩ load. |
| 2 (IN–) | Inverting input | High-impedance CMOS node; accepts signals from 0 V to VCC with 100 dB CMRR. |
| 3 (IN+) | Non-inverting input | High-impedance CMOS node; supports direct connection to high-Z sensors (e.g., thermocouples, photodiodes). |
| 4 (GND) | Analog ground reference | Must be connected to low-noise analog ground plane; separates signal return from digital ground. |
| 5 (NC) | No internal connection | Not bonded; must remain unconnected to avoid parasitic coupling or mechanical stress. |
| 6 (VCC) | Positive supply | Accepts 2.5–12 V; requires local 0.1 µF ceramic + 6.8 µF tantalum decoupling per TI layout guidelines. |
| 7 (NC) | No internal connection | Not bonded; must remain unconnected to prevent unintended capacitance or ESD path. |
| 8 (NC) | No internal connection | Not bonded; floating pin; no routing or soldering required. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 1 µA/channel supply current enables >10-year battery life in coin-cell–powered devices. |
| Rail-to-rail input and output | Full 0–VCC input range and 180-mV-from-rail output swing maximize usable signal headroom in low-voltage systems. |
| Low input offset voltage | 600 µV typical offset minimizes DC error in precision gain stages driving 12-bit ADCs. |
| Ultra-low input bias current | ≤550 pA over full temperature range permits use with >10 MΩ sensor elements without significant voltage drop. |
| Single-supply compatibility | Operates down to 2.5 V and up to 12 V - supports direct interface with MSP430 microcontrollers and Li-ion batteries. |
Applications
| Portable Gas Sensor Front-End | Medical Electrode Amplifier |
|---|---|
Use Scenario: Amplifying nanoamp-level current from electrochemical gas sensors (e.g., CO, NO2) into 12-bit ADCs in handheld air quality monitors. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10 MΩ feedback resistor; TLV2241CD's 550 pA max input bias current prevents signal loss across high-value RF. Use Value: Enables accurate sub-ppm detection without calibration drift caused by input current error. | Use Scenario: Biopotential acquisition from dry electrodes in wearable ECG patches operating on CR2032 coin cells. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier buffer; TLV2241CD's rail-to-rail input accepts electrode offsets up to ±1.5 V while maintaining DC accuracy. Use Value: Eliminates need for dual-supply generation, reducing BOM count and power consumption by 40% vs. legacy op-amps. |
| Smart Thermostat Ambient Sensing | Industrial 4–20 mA Loop Receiver |
Use Scenario: Conditioning signals from NTC thermistors and humidity sensors in battery-powered thermostats with 10-year shelf life. IC Role / Device Role / Timing Role: Low-drift voltage follower feeding SAR ADC; TLV2241CD's 3 µV/°C offset drift ensures <±0.1°C error over 0–70°C. Use Value: Meets ENERGY STAR® indoor climate control accuracy requirements without active temperature compensation. | Use Scenario: Converting 4–20 mA loop current to 0–2.5 V for microcontroller ADC sampling in programmable logic controllers. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with 125 Ω shunt; TLV2241CD's 100 V/mV open-loop gain ensures <0.1% linearity error. Use Value: Achieves ±0.05% full-scale accuracy over temperature, exceeding IEC 61000-4-4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail input/output operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2401CD | Lower VIO (390 µV typ), same 1 µA ICC, but only rail-to-rail output (not input); 5 kHz GBW. | Cannot accept inputs near VCC - unsuitable for high-side current sensing or sensor biasing above mid-rail. | Select TLV2401CD only when input common-mode range < VCC–0.5 V is acceptable and lower offset is critical. |
| OPA348AIDBVR | Higher ICC (45 µA), 1 MHz GBW, rail-to-rail I/O, 10 µV VIO; SOT-23-5 package. | Not micropower - reduces battery life by >95% in always-on applications; higher speed unnecessary for DC sensor signals. | Choose OPA348AIDBVR only when bandwidth >100 kHz or offset <10 µV is mandatory, and power budget allows. |
Compared with TLV2401CD and OPA348AIDBVR, the TLV2241CD uniquely balances true rail-to-rail input capability, sub-1-µA quiescent current, and adequate 5.5-kHz bandwidth for DC-coupled sensor interfaces - making it irreplaceable in long-life, single-supply, high-impedance measurement systems.
Availability
TLV2241CD is available at Aetrix Electronics and suitable for portable medical devices, battery-powered environmental sensors, smart building controls, and industrial loop receivers requiring stable component supply across multi-year production cycles.
Supply support for TLV2241CD 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, embedded processing, and connectivity technologies, with over 90 years of innovation in precision analog ICs.
The TLV224x family was engineered specifically for ultra-low-power, single-supply sensor signal conditioning in battery-constrained applications - emphasizing micropower operation, rail-to-rail performance, and robustness across industrial temperature ranges.
FAQ
What is the maximum supply voltage rating for TLV2241CD?
The absolute maximum supply voltage for TLV2241CD is 16.5 V, but the recommended operating range is 2.5 V to 12 V. Operation beyond 12 V risks parametric degradation and reduced reliability. Electrical characteristics are fully specified at 2.7 V, 5 V, and 12 V per the SLOS329C datasheet.
Does TLV2241CD support rail-to-rail input at 2.5 V supply?
Yes, TLV2241CD supports rail-to-rail input common-mode range (0 V to VCC) down to 2.5 V supply, verified across the full commercial temperature range (0°C to 70°C). At 2.5 V, input offset voltage remains ≤3000 µV and CMRR ≥53 dB, ensuring usable DC accuracy in Li-ion–powered systems.
Can TLV2241CD drive a 10 nF capacitive load stably?
No - TLV2241CD is characterized for stability with ≤100 pF capacitive load. Driving 10 nF (10,000 pF) will cause severe phase margin degradation and likely oscillation. For larger loads, external isolation resistor (≥100 Ω) or unity-gain buffer configuration with compensation network is required per Figure 24 in the TLV2241 datasheet.
What is the thermal resistance (θJA) of TLV2241CD in SOIC-8 package?
The junction-to-ambient thermal resistance (θJA) for TLV2241CD in SOIC-8 (D) package is 176 °C/W under JEDEC Low-K test board conditions (no airflow). This value assumes proper PCB copper pour and 0.1 µF + 6.8 µF local decoupling; actual θJA improves with enhanced copper area or forced airflow.
Is TLV2241CD pin-compatible with other members of the TLV224x family?
No - TLV2241CD (single-channel, SOIC-8) has different pinout than TLV2242CD (dual-channel, SOIC-8) and TLV2244CD (quad-channel, SOIC-14). While all share identical electrical specs, their pin assignments differ: TLV2241CD uses pins 1–4 and 6 for signal I/O, whereas TLV2242CD allocates pins 1–8 across two independent amplifiers. PCB layout is not interchangeable.
TLV2241CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.002V/µs
- Gain Bandwidth Product:
- 5.5 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 pA
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 1µA
- Current - Output / Channel:
- 200 µA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLV2241CD FAQ
1.How can I place an order for TLV2241CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2241CD 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 TLV2241CD reliable?
The price and inventory of TLV2241CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2241CD is usually 5 days.
3.What payment methods are accepted for TLV2241CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2241CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2241CD?
TLV2241CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2241CD 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 TLV2241CD?
For technical support, including TLV2241CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2241CD requirements.
6.How does Aetrix verify that TLV2241CD is sourced from the original manufacturer or authorized distributors?
All TLV2241CD 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 TLV2241CD meets industry standards.
7.What is the process for return or replacement of TLV2241CD?
All TLV2241CD units undergo pre-shipment inspection (PSI). If there is an issue with TLV2241CD, 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 TLV2241CD part is unused and in its original packaging.
Return procedure for TLV2241CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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