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Texas Instruments TLC2274ACN
- Part No.:
- TLC2274ACN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC2274ACN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:172
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Product details
Overview
TLC2274ACN from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for precision, low-noise 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, 1-pA typical input bias current, and rail-to-rail output swing - enabling high-fidelity interfacing with ADCs in battery-powered sensor front-ends.
For engineers reviewing the TLC2274ACN datasheet, TLC2274ACN pinout, TLC2274ACN application, or TLC2274ACN equivalent, key selection criteria include its ±5-V operation capability, 950-µV maximum input offset voltage (A-grade), 4.4–6-mA supply current across temperature, and compatibility with 14-pin PDIP packaging for through-hole prototyping and industrial control designs.
Technical Context
The TLC2274ACN uses advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining low input bias current and low noise - critical for high-impedance transducer interfaces. Its common-mode input range extends to the negative rail, supporting ground-referenced inputs in single-supply configurations.
It operates over ±2.2 V to ±8 V supply ranges, with full characterization at ±5 V and 5 V single supply. The device exhibits 75–80 dB CMRR and 80–95 dB PSRR, ensuring stable performance under supply and common-mode variations in mixed-signal embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 2.25 MHz - supports stable unity-gain buffering and closed-loop amplification up to ~200 kHz with phase margin ≥52°. |
| Slew rate | 3.6 V/µs - enables clean 20-kHz sine-wave output at ±2.3 V with <0.0011% THD+N under 10-kΩ load. |
| Input offset voltage (max) | 950 µV - ensures ≤±1 mV DC error in precision gain stages without trimming, specified over full temperature range. |
| Input bias current (typ) | 1 pA - minimizes voltage error across >1-MΩ source impedances, e.g., piezoelectric sensors or pH electrodes. |
| Supply current per channel | 4.8–6 mA at ±5 V - balances speed and power for multi-channel analog front-ends in portable instrumentation. |
| Output voltage swing | ±4.85 V at ±5 V supply (IO = ±200 µA) - delivers >97% rail-to-rail dynamic range into 10-kΩ loads. |
| Input voltage noise | 9 nV/√Hz at 1 kHz - two times lower than legacy TLC27x op-amps, reducing integrated noise in 10-Hz–100-kHz bands. |
Pinout & Package
The TLC2274ACN is supplied in a 14-pin plastic dual in-line package (PDIP) with 0.3-inch body width and standard through-hole footprint. Pin spacing is 0.1 inch, compatible with breadboards and wave-soldered industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplified output of Channel 1; capable of sourcing/sinking ±200 µA while maintaining rail-to-rail swing. |
| 2 | IN1− | Inverting input of Channel 1; high-impedance node (10¹² Ω) suitable for feedback networks and precision summing. |
| 3 | IN1+ | Non-inverting input of Channel 1; common-mode range includes VDD−, enabling ground-referenced sensing. |
| 4 | VDD−/GND | Negative supply or ground reference; must be decoupled locally to minimize PSRR degradation. |
| 5 | IN2+ | Non-inverting input of Channel 2; electrically isolated from other channels; shares same input specs as IN1+. |
| 6 | IN2− | Inverting input of Channel 2; matched to IN1− in offset and bias current for differential pair configurations. |
| 7 | OUT2 | Amplified output of Channel 2; independent output stage with identical AC/DC specs to OUT1. |
| 8 | NC | No connection - internal die pad not bonded; leave unconnected on PCB. |
| 9 | IN3+ | Non-inverting input of Channel 3; third fully independent amplifier input with rail-to-rail common-mode range. |
| 10 | IN3− | Inverting input of Channel 3; supports active filtering or instrumentation amplifier topologies with matched pairs. |
| 11 | VDD− | Negative supply terminal - used only in split-supply mode; tied to GND in single-supply operation. |
| 12 | IN4+ | Non-inverting input of Channel 4; enables four-channel signal conditioning without external multiplexing. |
| 13 | IN4− | Inverting input of Channel 4; supports simultaneous acquisition of four analog signals with matched DC specs. |
| 14 | OUT4 | Amplified output of Channel 4; final output in quad configuration; requires local 0.1-µF ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >97% of full supply range at ±200 µA load, maximizing ADC utilization in 12-bit+ systems. |
| Low input bias current (1 pA typ) | Enables direct coupling to high-impedance sources (e.g., photodiodes, electret mics) without guard rings or bias compensation. |
| Low input voltage noise (9 nV/√Hz) | Reduces total integrated noise by 3 dB versus TLC274, improving SNR in audio and sensor signal chains. |
| Specified for single- and split-supply operation | Operates from 4.4 V to 16 V single supply or ±2.2 V to ±8 V dual supply - simplifies power architecture reuse. |
| Common-mode input range includes negative rail | Accepts inputs down to VDD−, eliminating level-shifting needs for ground-referenced thermistor or strain gauge bridges. |
Applications
| Transducer Interface | Battery-Powered Monitoring |
|---|---|
Use Scenario: Amplifying low-level signals from piezoelectric accelerometers or capacitive humidity sensors with high source impedance (>1 MΩ). IC Role / Device Role / Timing Role: Precision DC-coupled amplifier providing gain, filtering, and rail-to-rail output drive into SAR ADC reference buffers. Use Value: 1-pA input bias current prevents signal loss across sensor RC networks; 9 nV/√Hz noise preserves microvolt-level resolution. | Use Scenario: Signal conditioning in handheld ECG or pulse oximeter units powered by two AA cells (3 V nominal). IC Role / Device Role / Timing Role: Quad-channel front-end amplifier for simultaneous lead-II, lead-III, chest, and reference electrode processing. Use Value: 4.4–6 mA total supply current enables >24-hour runtime; rail-to-rail output ensures full ADC code utilization at low VDD. |
| White Goods Control | Analog Front-End for Industrial ADCs |
Use Scenario: Temperature and motor current sensing in refrigerator compressor control modules operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Robust quad op-amp performing offset correction, current-to-voltage conversion, and anti-alias filtering. Use Value: Specified performance over full industrial temperature range; 950-µV max VIO eliminates need for calibration in cost-sensitive appliances. | Use Scenario: Driving the input of 16-bit successive-approximation ADCs (e.g., ADS8860) in programmable logic controllers. IC Role / Device Role / Timing Role: Buffer and level-shifter ensuring fast settling (<2.6 µs to 0.01%) and minimal THD+N (<0.004%) at 20 kHz. Use Value: 3.6-V/µs slew rate and 50° phase margin guarantee monotonic step response into ADC input capacitance. |
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 |
|---|---|---|---|
| TLC2274CN | Higher max input offset voltage (2500 µV vs. 950 µV); otherwise identical AC specs and pinout. | Suitable for non-critical gain stages where offset trimming is acceptable; not recommended for precision DC-coupled paths. | Select TLC2274CN only when cost sensitivity outweighs DC accuracy requirements. |
| TLV2444CDR | Lower supply current (1.3 mA/ch), slower slew rate (0.6 V/µs), wider input voltage range (beyond rails), but no A-grade VIO option. | Better for ultra-low-power, low-frequency sensor nodes; unsuitable for 20-kHz+ signal conditioning due to bandwidth limitation. | Choose TLV2444CDR when battery life is paramount and signal bandwidth <100 kHz. |
Compared with TLC2274CN and TLV2444CDR, the TLC2274ACN uniquely combines A-grade precision (950 µV VIO), full rail-to-rail output, and 3.6-V/µs slew rate in a through-hole PDIP package - making it optimal for industrial analog front-ends requiring both accuracy and robustness without redesign.
Availability
TLC2274ACN is available at Aetrix Electronics and suitable for white goods control, handheld medical monitoring, and industrial analog front-end designs requiring stable component supply, long-lifecycle support, and through-hole assembly compatibility.
Supply support for TLC2274ACN 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 company specializing in analog, embedded processing, and digital signal solutions for industrial, automotive, and consumer markets.
The TLC227x family was designed as a precision, low-noise upgrade to the TLC27x series - targeting high-impedance transducer interfaces, battery-powered instrumentation, and rail-to-rail ADC driver applications.
FAQ
What supply voltage ranges does the TLC2274ACN support?
The TLC2274ACN operates from ±2.2 V to ±8 V in split-supply mode or 4.4 V to 16 V in single-supply mode. It is fully characterized at ±5 V and 5 V, with rail-to-rail output swing maintained across this entire range. Absolute maximum ratings specify ±8 V supply, and exceeding this may cause permanent damage.
Does the TLC2274ACN have rail-to-rail input capability?
No, the TLC2274ACN features rail-to-rail *output* swing but only extends its common-mode input voltage range to the negative rail (VDD−). The positive end is limited to VDD+ −1.5 V. This allows ground-referenced inputs in single-supply use but does not support full rail-to-rail differential input voltage swings.
What is the maximum input offset voltage specification for TLC2274ACN?
The TLC2274ACN has a maximum input offset voltage of 950 µV at TA = 25°C and across its full operating temperature range (0°C to 70°C for C-grade). This A-grade specification distinguishes it from the standard TLC2274CN (2500 µV max) and ensures higher DC accuracy in precision amplification stages.
Can TLC2274ACN drive capacitive loads directly?
The TLC2274ACN is stable with 100-pF capacitive loads under unity-gain conditions, as verified by 52° phase margin and 10-dB gain margin in datasheet testing. For loads >100 pF, external isolation resistance (e.g., 10–100 Ω in series with the output) is recommended to maintain stability and prevent peaking or oscillation.
Is the TLC2274ACN pin-compatible with other packages in the TLC2274 family?
Yes, the TLC2274ACN (14-pin PDIP) shares identical pin configuration and function with TLC2274A in SOIC (D), TSSOP (PW), and CFP (J) packages. All variants use the same 14-pin mapping defined in the datasheet's Pin Functions table, enabling drop-in replacement across package types without layout changes.
TLC2274ACN 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC2274ACN FAQ
1.How can I place an order for TLC2274ACN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274ACN 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 TLC2274ACN reliable?
The price and inventory of TLC2274ACN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274ACN is usually 5 days.
3.What payment methods are accepted for TLC2274ACN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274ACN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274ACN?
TLC2274ACN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274ACN 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 TLC2274ACN?
For technical support, including TLC2274ACN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274ACN requirements.
6.How does Aetrix verify that TLC2274ACN is sourced from the original manufacturer or authorized distributors?
All TLC2274ACN 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 TLC2274ACN meets industry standards.
7.What is the process for return or replacement of TLC2274ACN?
All TLC2274ACN units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274ACN, 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 TLC2274ACN part is unused and in its original packaging.
Return procedure for TLC2274ACN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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