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Texas Instruments TLC2274CD
- Part No.:
- TLC2274CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2274CD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:853
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Product details
Overview
TLC2274CD from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for low-noise, low-input-bias-current signal conditioning in high-impedance sensor interfaces. 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 direct interfacing with 12-bit ADCs in battery-powered instrumentation.
For engineers reviewing the TLC2274CD datasheet, TLC2274CD pinout, TLC2274CD application, or TLC2274CD equivalent, key selection criteria include its 1-pA typical input bias current, 950-µV maximum input offset voltage (A-grade), 75-dB CMRR at ±5 V, and SOIC-14 package compatibility with space-constrained analog front-ends requiring precision DC coupling and wide dynamic range.
Technical Context
The TLC2274CD uses advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining low input bias current and low noise - critical for piezoelectric transducer amplification and thermocouple signal conditioning. Its common-mode input voltage range extends to the negative rail, supporting single-supply configurations down to 4.4 V.
It operates across ±2.2 V to ±8 V supply ranges, exhibits 10¹²-Ω differential and common-mode input resistance, and maintains stable unity-gain performance with 100-pF capacitive loads - eliminating need for external compensation in most sensor interface circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 2.25 MHz - supports closed-loop bandwidth up to ~200 kHz at gain = 10 without instability |
| Slew rate | 3.6 V/µs - enables accurate reproduction of 100-kHz, 3.6-VPP sine waves |
| Input voltage noise | 9 nV/√Hz at 1 kHz - 2× lower than TLC274, improving SNR in micropower sensor amps |
| Input bias current | 1 pA typical - preserves signal integrity in >1-GΩ source impedances (e.g., pH electrodes) |
| Input offset voltage | ≤950 µV max (TLC2274A variant) - reduces DC error in precision DC-coupled gain stages |
| Common-mode rejection | 75 dB at ±5 V - suppresses power supply ripple and shared-noise coupling in multi-channel systems |
| Supply current per channel | 4.8 mA at ±5 V - enables four independent channels within 20-mA total budget for portable designs |
Pinout & Package
TLC2274CD is supplied in a 14-pin SOIC (Small Outline Integrated Circuit) package measuring 3.91 mm × 8.65 mm, with standard 1.27-mm lead pitch and gull-wing leads compatible with automated PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplified output of Channel 1 - rail-to-rail swing supports full-scale ADC input drive |
| 2 | IN−1 | Inverting input of Channel 1 - high-impedance node sensitive to layout parasitics |
| 3 | IN+1 | Non-inverting input of Channel 1 - accepts signals down to VDD− (negative rail) |
| 4 | VDD−/GND | Negative supply or ground reference - must be low-impedance for noise immunity |
| 5 | IN+2 | Non-inverting input of Channel 2 - electrically isolated from Channel 1 inputs |
| 6 | IN−2 | Inverting input of Channel 2 - matched to IN−1 for common-mode rejection |
| 7 | OUT2 | Amplified output of Channel 2 - independent output stage, no crosstalk below −80 dB |
| 8 | NC | No connection - not internally bonded; leave unconnected and unpopulated |
| 9 | IN+3 | Non-inverting input of Channel 3 - identical electrical characteristics to IN+1/IN+2 |
| 10 | IN−3 | Inverting input of Channel 3 - supports three independent instrumentation paths on one IC |
| 11 | VDD− | Negative supply terminal - dedicated pin improves PSRR vs. shared VDD−/GND configuration |
| 12 | IN+4 | Non-inverting input of Channel 4 - enables simultaneous 4-channel analog acquisition |
| 13 | IN−4 | Inverting input of Channel 4 - fully specified for AC/DC performance across temperature |
| 14 | OUT4 | Amplified output of Channel 4 - rail-to-rail swing ensures full utilization of 0–5 V ADC range |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers <10-mV headroom to both rails at ±5 V, enabling maximum dynamic range into SAR ADCs |
| Low input bias current (1 pA) | Minimizes voltage error across high-value feedback networks (>10 MΩ) used in ultra-low-power integrators |
| Low noise (9 nV/√Hz) | Reduces integrated noise floor in 0.1–10 kHz bandwidths typical of ECG and vibration monitoring |
| Specified for single- and split-supply | Operates from +4.4 V to +16 V single supply or ±2.2 V to ±8 V dual supply - simplifies power architecture |
| Macromodel included | SPICE model validated against production silicon enables accurate transient and AC simulation before prototyping |
Applications
| Transducer Interface | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying mV-level outputs from load cells, strain gauges, or piezoresistive pressure sensors in industrial IoT nodes. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier with programmable gain, driving 12-bit SAR ADC input. Use Value: 1-pA input bias current prevents loading of high-Z Wheatstone bridge elements; rail-to-rail output maximizes ADC code usage. | Use Scenario: Signal chain in handheld multimeters or portable gas analyzers operating from two AA cells (3 V). IC Role / Device Role / Timing Role: Quad-channel front-end amplifier for simultaneous voltage, current, temperature, and reference sensing. Use Value: 4.8-mA per-channel supply current allows all four op-amps active during measurement burst mode without exceeding 20-mA peak draw. |
| White Goods Control | Analog Front-End for Data Acquisition |
Use Scenario: Motor current sensing and temperature monitoring in refrigerator compressor control modules. IC Role / Device Role / Timing Role: Isolated current-sense amplifier input stage and NTC thermistor buffer feeding MCU ADC. Use Value: Common-mode input range including negative rail supports single-supply operation with shunt-based current sensing referenced to system ground. | Use Scenario: Multi-channel sensor hub aggregating data from humidity, ambient light, and acceleration sensors. IC Role / Device Role / Timing Role: Four independent precision buffers driving multiplexed ADC inputs with minimal crosstalk. Use Value: 75-dB CMRR rejects coupled noise from switching power supplies; 2.25-MHz GBW supports anti-alias filtering up to 200 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2274ACD | Same SOIC-14 package; tighter 950-µV max input offset voltage (vs. 2500 µV for TLC2274CD) | Better DC accuracy required in precision weigh scales or medical diagnostics | Select TLC2274ACD when offset drift and long-term stability dominate over cost |
| TLV2434CD | Lower 1.2-mA/channel supply current; 0.6-V/µs slew rate; 11-nV/√Hz noise | Ultra-low-power applications where bandwidth <100 kHz suffices | Choose TLV2434CD for always-on battery life extension, accepting reduced speed/noise trade-off |
Compared with TLC2274CD, TLC2274ACD offers guaranteed low-offset performance for DC-critical designs, while TLV2434CD trades bandwidth and noise for 75% lower quiescent current - making TLC2274CD the balanced choice for general-purpose 4-channel precision amplification with rail-to-rail output.
Availability
TLC2274CD is available at Aetrix Electronics and suitable for white goods control, handheld instrumentation, and transducer interface applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across temperature.
Supply support for TLC2274CD 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC227x family was engineered to replace legacy TLC27x op-amps with improved noise, input offset, and rail-to-rail output capability - targeting high-impedance sensor signal chains in cost-sensitive industrial and consumer systems.
FAQ
What is the maximum supply voltage range supported by the TLC2274CD?
The TLC2274CD operates over a recommended supply voltage range of ±2.2 V to ±8 V for split-supply configurations, or +4.4 V to +16 V for single-supply use. Absolute maximum ratings specify ±8 V on VDD+ and VDD−, but sustained operation beyond ±8 V risks permanent damage. Designers should maintain supply voltages within recommended limits to ensure specified AC/DC performance and reliability across temperature.
Does the TLC2274CD support rail-to-rail input voltage range?
The TLC2274CD features rail-to-rail *output* swing but does not provide rail-to-rail *input*. Its common-mode input voltage range extends to the negative rail (VDD−) but stops 1.5 V below the positive rail (VDD+) under recommended conditions. At ±5 V supply, VICR spans –5 V to +3.5 V - sufficient for many single-ended and differential sensor interfaces, though not full rail-to-rail input like newer precision op-amps.
Can the TLC2274CD drive a 10-kΩ load while maintaining rail-to-rail output?
Yes. The TLC2274CD guarantees rail-to-rail output swing into 10-kΩ loads at ±5 V supply: VOH ≥ 4.85 V and VOL ≤ –4.85 V at ±200 µA output current. At higher currents (±1 mA), output swing compresses to ±4.25 V - still usable for most 12-bit ADC interfaces. For heavier loads, external buffering is recommended to preserve linearity and settling time.
How does the TLC2274CD differ from the TLC2274A variant?
The TLC2274CD is the standard-grade version with maximum input offset voltage of 2500 µV at 25°C, while the TLC2274ACD (A-grade) tightens this to 950 µV max. Both share identical pinout, package, bandwidth, noise, and supply current. The A-grade variant undergoes additional screening for lower initial offset and drift - critical for precision DC-coupled applications like laboratory equipment or calibration references where offset error directly impacts measurement accuracy.
Is SPICE modeling support available for the TLC2274CD?
Yes. Texas Instruments provides a validated PSpice macromodel for the TLC2274CD, covering AC response, DC transfer characteristics, slew rate limiting, and supply current vs. temperature. The model is distributed via TI's website and integrated into TINA-TI - enabling accurate simulation of closed-loop behavior, stability analysis with capacitive loads, and noise performance prediction before hardware validation.
TLC2274CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC2274CD FAQ
1.How can I place an order for TLC2274CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274CD 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 TLC2274CD reliable?
The price and inventory of TLC2274CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274CD is usually 5 days.
3.What payment methods are accepted for TLC2274CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274CD?
TLC2274CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274CD 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 TLC2274CD?
For technical support, including TLC2274CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274CD requirements.
6.How does Aetrix verify that TLC2274CD is sourced from the original manufacturer or authorized distributors?
All TLC2274CD 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 TLC2274CD meets industry standards.
7.What is the process for return or replacement of TLC2274CD?
All TLC2274CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274CD, 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 TLC2274CD part is unused and in its original packaging.
Return procedure for TLC2274CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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