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Texas Instruments TLC2274IN
- Part No.:
- TLC2274IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC2274IN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:444
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Product details
Overview
TLC2274IN from Texas Instruments is a quad rail-to-rail output operational amplifier designed for precision signal conditioning in single- or split-supply systems. It delivers 2.2-MHz gain-bandwidth, 3.6-V/µs slew rate, 9 nV/√Hz input voltage noise at 1 kHz, ±5 V supply operation, and rail-to-rail output swing - enabling high-fidelity interfacing with ADCs in battery-powered sensor front-ends.
For engineers reviewing the TLC2274IN datasheet, TLC2274IN pinout, TLC2274IN application, or TLC2274IN equivalent, key selection considerations include its 1-pA typical input bias current, 950-µV maximum input offset voltage (A-grade), 75-dB common-mode rejection at ±5 V, and compatibility with low-voltage (±2.2 V) to wide-supply (±8 V) operation across industrial temperature ranges.
Technical Context
The TLC2274IN uses advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining low input bias current and low noise. Its input stage operates with common-mode voltage extending to the negative rail, supporting true single-supply sensor interface configurations without level-shifting circuitry.
It features unity-gain stable compensation, 50° phase margin, and 10-dB gain margin under 10-kΩ load and 100-pF capacitive load conditions. The device draws 4.8 mA typical supply current at ±5 V, balancing speed, precision, and power efficiency for portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 2.25 MHz - supports stable closed-loop operation up to ~200 kHz at AV = 10 without excessive phase lag. |
| Slew rate | 3.6 V/µs - enables accurate reproduction of 20-kHz full-scale sine waves at ±2.3 V output swing. |
| Input offset voltage (max) | 950 µV - ensures ≤0.019% gain error in unity-gain buffer applications at room temperature. |
| Input bias current (typ) | 1 pA - minimizes voltage error across high-impedance sources like piezoelectric transducers or pH electrodes. |
| CMRR | 75 dB at ±5 V - rejects >5,600:1 of common-mode interference in noisy industrial environments. |
| Supply voltage range | ±2.2 V to ±8 V - allows direct use with standard ±5 V rails or low-power ±3 V systems. |
| Output swing | Rail-to-rail - delivers full dynamic range into 10-kΩ loads, maximizing ADC utilization without external level-shifting. |
Pinout & Package
TL2274IN is supplied in a 14-pin PDIP package (6.35 mm × 19.30 mm body size), suitable for through-hole prototyping and legacy industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplified output of Channel 1; capable of sourcing/sinking ±50 mA, swings within 15 mV of rails at light load. |
| 2 | IN1− | Inverting input of Channel 1; high-impedance node (10¹² Ω) requiring guarded layout to preserve 1-pA bias performance. |
| 3 | IN1+ | Non-inverting input of Channel 1; common-mode range includes VDD−, enabling ground-referenced sensor interfaces. |
| 4 | VDD−/GND | Negative supply terminal; used as ground in single-supply mode (e.g., 0 V when VDD+ = 5 V). |
| 5 | IN2+ | Non-inverting input of Channel 2; electrically identical to IN1+, supports independent dual-channel configuration. |
| 6 | IN2− | Inverting input of Channel 2; matched to IN1− for consistent common-mode rejection across both channels. |
| 7 | OUT2 | Amplified output of Channel 2; fully independent from OUT1, supports multi-stage filtering or differential drive. |
| 8 | NC | No connection - internally unconnected; must remain floating per TI design guidelines. |
| 9 | IN3+ | Non-inverting input of Channel 3; enables three-channel signal paths (e.g., reference + two sensor channels) on one IC. |
| 10 | IN3− | Inverting input of Channel 3; maintains same input impedance and bias current specs as other channels. |
| 11 | VDD− | Negative supply terminal - required for split-supply operation; tied to GND only in single-supply configurations. |
| 12 | OUT3 | Amplified output of Channel 3; rail-to-rail swing supports simultaneous analog acquisition across three channels. |
| 13 | IN4− | Inverting input of Channel 4; completes quad architecture for four independent amplification paths. |
| 14 | IN4+ | Non-inverting input of Channel 4; enables full quad-channel instrumentation amplifier front-end with shared reference. |
| - | VDD+ | Positive supply terminal - accepts up to +8 V in split mode or +16 V in single-supply mode (VDD− = 0 V). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full supply voltage range to load - eliminates need for level-shifting when driving 12-bit+ SAR ADCs. |
| Low input bias current (1 pA typ) | Preserves signal integrity from ultra-high-impedance sources such as electret mics or ion-selective electrodes. |
| Low input voltage noise (9 nV/√Hz) | Reduces integrated noise floor in 10 Hz–20 kHz audio and sensor bandwidths by >2× vs. older TLC27x family. |
| Specified for single- and split-supply operation | Supports seamless migration between 5-V single-supply systems and ±5-V precision instrumentation without redesign. |
| Common-mode input range includes negative rail | Accepts 0-V referenced inputs in single-supply mode - simplifies transducer interface without external bias networks. |
Applications
| Hand-held Monitoring Systems | Transducer Interfaces |
|---|---|
|
Use Scenario: Portable blood glucose meters and pulse oximeters acquiring low-level analog signals from electrochemical sensors. IC Role / Device Role / Timing Role: Quad amplifier configures as 3-channel sensor front-end + reference buffer, each channel independently conditioned before multiplexed ADC sampling. Use Value: 1-pA input bias prevents loading of high-impedance enzymatic electrodes; rail-to-rail output maximizes 16-bit ADC dynamic range utilization. |
Use Scenario: Industrial pressure transducers with millivolt-level bridge outputs requiring amplification and offset compensation. IC Role / Device Role / Timing Role: Configured as precision instrumentation amplifier (using 3 op-amps per channel) with programmable gain and common-mode rejection. Use Value: 75-dB CMRR suppresses supply-induced noise in 4–20 mA loop-powered systems; low 950-µV offset minimizes calibration drift. |
| Battery-Powered Applications | White Goods (Refrigerators, Washing Machines) |
|
Use Scenario: Smart thermostat sensor nodes using thermistors and humidity sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Four independent amplifiers condition temperature, humidity, ambient light, and door-switch analog signals simultaneously. Use Value: 4.8-mA supply current at ±5 V enables >1-year operation on two AA cells; rail-to-rail output avoids external charge pumps. |
Use Scenario: Compressor motor control boards monitoring current sense, temperature, and defrost heater status in refrigeration units. IC Role / Device Role / Timing Role: Provides analog signal conditioning for Hall-effect current sensors and NTC thermistors in harsh, high-noise appliance environments. Use Value: Specified operation from –40°C to +125°C ensures reliability in condenser compartments; 80-dB PSRR rejects switching noise from nearby SMPS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2444IDR | Lower supply current (1.3 mA/ch), lower slew rate (0.6 V/µs), wider temp range (–40°C to 125°C), but higher input offset (2.5 mV max). | Better suited for ultra-low-power, low-speed sensor buffering where precision offset is less critical than battery life. | Select TLV2444IDR when total supply current < 6 mA is mandatory and bandwidth < 200 kHz suffices. |
| OPA4340UA | Higher precision (125 µV max offset), lower noise (8 nV/√Hz), but narrower supply range (±1.35 V to ±3.75 V) and no PDIP option. | Ideal for high-resolution medical instrumentation requiring sub-0.1% gain accuracy, but incompatible with ±5 V or PDIP-based legacy designs. | Choose OPA4340UA only for new designs targeting highest DC precision and operating strictly within 3.3-V single-supply or ±3-V dual-supply constraints. |
Compared with TLV2444IDR and OPA4340UA, TLC2274IN uniquely balances rail-to-rail output, 1-pA bias, ±5 V compatibility, and PDIP packaging - making it the only drop-in replacement for legacy TLC274-based industrial controls requiring minimal layout change and proven long-term stability.
Availability
TLC2274IN is available at Aetrix Electronics and suitable for hand-held monitoring systems, transducer interfaces, and battery-powered applications requiring stable component supply, long-lifecycle support, and through-hole assembly compatibility.
Supply support for TLC2274IN 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 solutions, with over 50 years of innovation in precision amplifiers and signal chain components.
The TLC227x family was engineered to upgrade legacy TLC27x designs with rail-to-rail output, lower noise, and improved input offset - specifically targeting industrial sensing, portable instrumentation, and automotive subsystems demanding robustness and precision.
FAQ
What supply voltage ranges does the TLC2274IN support?
The TLC2274IN operates from ±2.2 V to ±8 V in split-supply mode or from 4.4 V to 16 V in single-supply mode. At ±5 V, it delivers rail-to-rail output swing, 3.6-V/µs slew rate, and 2.25-MHz gain-bandwidth - verified per TI SLOS190H datasheet Section 6.8. This range supports both legacy ±5 V industrial systems and modern low-voltage battery-powered designs.
Does the TLC2274IN have rail-to-rail input capability?
No, the TLC2274IN features rail-to-rail *output* swing but its common-mode input voltage range extends only to VDD− and up to VDD+ −1.5 V. For example, at ±5 V supplies, VICR spans –5 V to +3.5 V. This allows ground-referenced inputs in single-supply mode but does not support full rail-to-rail input - confirmed in Section 6.3 of the SLOS190H datasheet.
What is the maximum input offset voltage specification for TLC2274IN?
The TLC2274IN is the standard grade variant; its maximum input offset voltage is 2500 µV at TA = 25°C and 3000 µV across the full temperature range (0°C to 70°C). For tighter offset control, the pin-compatible TLC2274AIN offers 950 µV max at 25°C and 1500 µV over full range - both specified in Section 6.7 of the official TI datasheet.
Can TLC2274IN drive capacitive loads reliably?
Yes, the TLC2274IN is unity-gain stable with up to 100 pF capacitive load, exhibiting 50° phase margin and 10-dB gain margin per Section 6.5 and 6.7 test conditions. Driving larger capacitive loads (>100 pF) requires isolation resistance (e.g., 100 Ω in series with output) to maintain stability - a requirement documented in TI's application guidance for LinCMOS op-amps.
Is TLC2274IN compatible with the older TLC274 in existing PCB layouts?
Yes, TLC2274IN uses the same 14-pin PDIP footprint and pinout as TLC274, enabling direct replacement without PCB modification. However, TLC2274IN improves upon TLC274 with rail-to-rail output, 2× lower noise (9 vs. 18 nV/√Hz), 10× lower input bias current (1 pA vs. 10 pA), and enhanced CMRR - all validated in TI's SLOS190H datasheet Section 3.
TLC2274IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3.6V/µs
- Gain Bandwidth Product:
- 2.25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 4.8mA (x4 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 4.4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC2274IN FAQ
1.How can I place an order for TLC2274IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274IN 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 TLC2274IN reliable?
The price and inventory of TLC2274IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274IN is usually 5 days.
3.What payment methods are accepted for TLC2274IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274IN?
TLC2274IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274IN 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 TLC2274IN?
For technical support, including TLC2274IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274IN requirements.
6.How does Aetrix verify that TLC2274IN is sourced from the original manufacturer or authorized distributors?
All TLC2274IN 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 TLC2274IN meets industry standards.
7.What is the process for return or replacement of TLC2274IN?
All TLC2274IN units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274IN, 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 TLC2274IN part is unused and in its original packaging.
Return procedure for TLC2274IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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