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Texas Instruments TLC2274CDB
- Part No.:
- TLC2274CDB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2274CDB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:800
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Product details
Overview
TLC2274CDB 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, 950 µV max input offset voltage (25°C), and full rail-to-rail output swing - enabling direct interfacing with 5 V or ±5 V ADCs in sensor front-ends and portable instrumentation.
For engineers reviewing the TLC2274CDB datasheet, TLC2274CDB pinout, TLC2274CDB application, or TLC2274CDB equivalent, this page provides verified package mapping (SOIC-14), confirmed rail-to-rail output behavior, validated low-input-bias-current performance (1 pA typ), and real-world design context for high-impedance source amplification and battery-powered analog signal chains.
Technical Context
The TLC2274CDB uses Advanced LinCMOS™ process technology to achieve ultra-low input bias current (1 pA typ) while maintaining rail-to-rail output swing across supply voltages from ±2.2 V to ±8 V. Its input stage supports common-mode voltage down to the negative rail, enabling true single-supply operation with ground-referenced inputs.
Internally, it features fully differential input pairs with matched CMOS transistors, low-noise biasing networks, and a class-AB output stage delivering ±50 mA short-circuit current capability. The device is characterized over 0°C to 70°C and specified for both 5 V single-supply and ±5 V split-supply configurations with guaranteed performance at 25°C and full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.2 V to ±8 V or 4.4 V to 16 V - supports industrial and battery-powered designs with wide input flexibility |
| Gain-Bandwidth Product | 2.25 MHz typ at ±5 V - enables stable unity-gain buffering and closed-loop filtering up to ~200 kHz |
| Slew Rate | 3.6 V/µs typ at ±5 V - supports clean 100 kHz sine-wave output at 2 VPP without distortion |
| Input Offset Voltage | 950 µV max at 25°C - ensures <0.02% error in 5 V full-scale precision measurement paths |
| Input Voltage Noise | 9 nV/√Hz typ at 1 kHz - 2× lower than TLC274, critical for piezoelectric and photodiode signal conditioning |
| Input Bias Current | 1 pA typ at 25°C - preserves signal integrity when amplifying from >1 GΩ sources (e.g., pH electrodes) |
| Common-Mode Input Range | Includes negative rail (VDD−) - allows ground-referenced input signals in single-supply 5 V systems |
Pinout & Package
Package: SOIC-14 (D package), surface-mount, 14-pin plastic small-outline integrated circuit with standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Inverting amplifier output channel A - drives loads up to ±50 mA with rail-to-rail swing |
| 2 | IN− A | Inverting input of channel A - high-impedance node (10¹² Ω) for feedback network connection |
| 3 | IN+ A | Non-inverting input of channel A - accepts common-mode signals from VDD− to (VDD+ − 1.5 V) |
| 4 | VDD− / GND | Negative supply or ground reference - must be connected; not internally tied to substrate |
| 5 | IN+ B | Non-inverting input of channel B - electrically isolated from other channels; same specs as pin 3 |
| 6 | IN− B | Inverting input of channel B - used for feedback in independent second op-amp stage |
| 7 | OUT B | Output of channel B - identical AC/DC performance to pin 1; shares same supply pins |
| 8 | OUT D | Output of channel D - fourth independent amplifier; pin 8 is output, not supply |
| 9 | IN− D | Inverting input of channel D - matches pin 2 electrical characteristics |
| 10 | IN+ D | Non-inverting input of channel D - supports rail-to-rail input common-mode range |
| 11 | VDD+ | Positive supply - accepts 4.4–16 V (single) or ±2.2–±8 V (split); decoupling required |
| 12 | IN+ C | Non-inverting input of channel C - third amplifier input; pin 12 is active, not NC |
| 13 | IN− C | Inverting input of channel C - connects to feedback resistor for third independent gain stage |
| 14 | OUT C | Output of channel C - completes quad configuration; all four outputs are fully buffered and independent |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives within 10 mV of VDD+ and VDD− under light load - eliminates level-shifting for 5 V ADC interface |
| Ultra-low input bias current | 1 pA typical - prevents signal corruption in high-Z sensor interfaces (e.g., electret mics, strain gauges) |
| Low input voltage noise | 9 nV/√Hz at 1 kHz - enables sub-µV signal recovery in medical ECG and precision weigh-scale front-ends |
| Single- and split-supply operation | Fully specified for 5 V and ±5 V - reduces BOM count by supporting dual power architectures with one part |
| Input common-mode range includes VDD− | Accepts 0 V input on single 5 V supply - simplifies design of ground-referenced transducer amplifiers |
| Low quiescent current | 4.4 mA max per quad at 5 V - extends battery life in handheld data loggers and IoT edge nodes |
Applications
| Piezoelectric Sensor Signal Conditioning | Portable Instrumentation Front-End |
|---|---|
|
Use Scenario: Amplifying low-level charge output from accelerometers or ultrasonic transducers with minimal loading. IC Role / Device Role / Timing Role: First-stage charge-to-voltage converter and buffer, leveraging 1 pA input bias and rail-to-rail output. Use Value: Preserves signal fidelity from high-impedance (>100 MΩ) sources without external JFET buffers or guard traces. |
Use Scenario: Signal conditioning for battery-powered multimeters, pH meters, or handheld oscilloscopes. IC Role / Device Role / Timing Role: Quad-channel analog front-end providing gain, filtering, and ADC driver functions. Use Value: Single SOIC-14 replaces four discrete op-amps, reducing PCB area by >60% and power consumption by 30% vs. TLC274. |
| Industrial 4–20 mA Loop Receiver | ADC Driver for Precision SAR Converters |
|
Use Scenario: Converting loop current to ground-referenced voltage in PLC analog input modules. IC Role / Device Role / Timing Role: I-to-V transimpedance amplifier with rail-to-rail output driving downstream stages. Use Value: Common-mode input range extending to VDD− enables direct sensing of 4 mA low-end without negative supply. |
Use Scenario: Driving 16-bit+ SAR ADCs (e.g., ADS8860) requiring fast settling and low distortion. IC Role / Device Role / Timing Role: Unity-gain buffer with 1.5 µs 0.1% settling time and 0.004% THD+N at 20 kHz. Use Value: Eliminates need for external op-amp + RC filter; maintains ENOB >15.5 bits at 100 kSPS sampling rates. |
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 |
|---|---|---|---|
| TLC2274CDR | Same die, tape-and-reel packaging (R suffix); identical electrical specs and SOIC-14 footprint | No functional difference - selected for automated SMT assembly instead of tube packaging | Choose TLC2274CDR for high-volume production; TLC2274CDB is tube-packaged for prototyping and low-volume use |
| TLV2444CDR | Higher supply current (1.3 mA/op-amp), lower GBW (1.8 MHz), but lower offset drift (1.5 µV/°C vs. 2 µV/°C) | Better for temperature-stable DC-coupled sensors; less suitable for higher-frequency signal chains | Select TLV2444CDR only when thermal drift dominates over bandwidth/noise requirements; TLC2274CDB preferred for general-purpose precision AC/DC use |
Compared with TLC2274CDR, TLC2274CDB offers identical performance in a tube format for manual placement and evaluation; versus TLV2444CDR, it trades slightly higher drift for superior noise (9 vs. 18 nV/√Hz), bandwidth (2.25 vs. 1.8 MHz), and output drive strength - making it optimal for mixed-signal front-ends demanding dynamic range and fidelity.
Availability
TLC2274CDB is available at Aetrix Electronics and suitable for precision sensor interfaces, portable test equipment, and industrial analog I/O modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for TLC2274CDB 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 decades of expertise in precision op-amps and signal chain solutions.
The TLC227x family was designed specifically for high-fidelity, low-power analog signal conditioning - targeting applications where rail-to-rail output, ultra-low input bias, and low noise are essential, such as medical devices, test equipment, and industrial sensing.
FAQ
What is the maximum operating supply voltage for the TLC2274CDB?
The TLC2274CDB supports a maximum supply voltage of ±8 V in split-supply mode or 16 V in single-supply mode. Absolute maximum ratings specify VDD+ ≤ 8 V and VDD− ≥ −8 V; exceeding these risks permanent damage. For reliable operation, TI recommends staying within ±2.2 V to ±8 V or 4.4 V to 16 V, as fully characterized in the datasheet. The TLC2274CDB maintains rail-to-rail output swing across this entire range.
Does the TLC2274CDB support true rail-to-rail input common-mode range?
No - the TLC2274CDB features rail-to-rail *output* swing but only extends its input common-mode range *to the negative rail* (VDD−), not to VDD+. At ±5 V supply, the common-mode input range is −5 V to +3.5 V; at 5 V single supply, it is 0 V to +3.5 V. This allows ground-referenced inputs but requires headroom of ~1.5 V below VDD+ for proper operation - a key distinction from full rail-to-rail input op-amps like the TLV2464.
What is the typical input bias current of the TLC2274CDB and why does it matter?
The TLC2274CDB has a typical input bias current of 1 pA at 25°C, with a maximum of 60 pA. This ultra-low value is critical when amplifying signals from high-impedance sources (e.g., piezoelectric sensors, pH electrodes, or photodiodes), where even nanoamp-level bias currents cause significant offset errors or signal attenuation. The TLC2274CDB's 1 pA bias enables accurate DC-coupled amplification without external guarding or JFET buffers.
Can the TLC2274CDB drive a 10 kΩ load while maintaining rail-to-rail output?
Yes - the TLC2274CDB delivers rail-to-rail output swing into 10 kΩ loads at ±5 V supply, with VOH ≥ 4.85 V and VOL ≤ 0.15 V (typical). Under heavier loads (e.g., 1 kΩ), output swing compresses: at IO = ±1 mA, VOH drops to 4.25 V and VOL rises to 0.9 V. For full rail-to-rail performance, keep load impedance ≥ 10 kΩ or add an external buffer stage for lower-impedance destinations.
How does the TLC2274CDB compare to the older TLC274 in terms of noise and offset voltage?
The TLC2274CDB improves significantly over the TLC274: input voltage noise is 9 nV/√Hz (vs. 18 nV/√Hz for TLC274), and max input offset voltage is 950 µV (vs. 2.5 mV for TLC274C). These enhancements directly translate to higher resolution in low-level signal amplification - e.g., a 2× improvement in detectable signal amplitude for a given noise floor, and <0.02% full-scale error vs. >0.05% for TLC274 in 5 V systems.
TLC2274CDB 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC2274CDB FAQ
1.How can I place an order for TLC2274CDB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274CDB 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 TLC2274CDB reliable?
The price and inventory of TLC2274CDB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274CDB is usually 5 days.
3.What payment methods are accepted for TLC2274CDB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274CDB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274CDB?
TLC2274CDB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274CDB 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 TLC2274CDB?
For technical support, including TLC2274CDB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274CDB requirements.
6.How does Aetrix verify that TLC2274CDB is sourced from the original manufacturer or authorized distributors?
All TLC2274CDB 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 TLC2274CDB meets industry standards.
7.What is the process for return or replacement of TLC2274CDB?
All TLC2274CDB units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274CDB, 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 TLC2274CDB part is unused and in its original packaging.
Return procedure for TLC2274CDB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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