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Texas Instruments TLC2272AQD
- Part No.:
- TLC2272AQD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2272AQD.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,926
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Product details
Overview
TLC2272AQD from Texas Instruments is a dual rail-to-rail output operational amplifier designed for precision signal conditioning in low-power, 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, 1-pA typical input bias current, and 950-µV maximum input offset voltage at 25°C - enabling accurate amplification of microvolt-level transducer outputs in battery-powered systems.
For engineers reviewing the TLC2272AQD datasheet, TLC2272AQD pinout, TLC2272AQD application, or TLC2272AQD equivalent, key selection criteria include rail-to-rail output swing (±4.91 V at ±5 V supply), common-mode input range extending to negative rail, low quiescent current (2.4 mA per amplifier), and Q-grade automotive qualification (–40°C to +125°C).
Technical Context
The TLC2272AQD uses advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining low input bias current and low noise. Its input stage supports common-mode voltages down to VDD−, making it suitable for single-supply operation with ground-referenced sensors.
It features unity-gain stable compensation, 50° phase margin, and 10 dB gain margin under 10-kΩ load with 100-pF capacitive load - ensuring robust stability in precision closed-loop configurations without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 2.25 MHz - enables stable AC-coupled amplification up to ~200 kHz at gain = 10 |
| Slew rate | 3.6 V/µs - supports full-scale step response in <1.5 µs for 0.1% settling (±2.3 V step) |
| Input offset voltage | ≤950 µV max at 25°C - ensures ≤0.02% error in 5-V full-scale measurement systems |
| Input bias current | 1 pA typical - preserves signal integrity when driving from >1 GΩ sources (e.g., piezoelectric sensors) |
| Supply current per channel | 2.4 mA at ±5 V - allows dual-amplifier operation within 5-mA total budget for portable instrumentation |
| Common-mode input range | Includes VDD− - permits direct interface with 0-V referenced thermistors or bridge sensors |
| Output voltage swing | ±4.91 V at ±5 V supply, IO = ±500 µA - delivers >98% of rail-to-rail dynamic range into 10-kΩ loads |
Pinout & Package
The TLC2272AQD is packaged in an 8-pin SOIC (D package) with nominal body size 3.91 mm × 4.90 mm, optimized for automated assembly and thermal performance in industrial control modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output, Channel 1 | Amplified output node capable of sourcing/sinking ±500 µA while maintaining rail-to-rail swing |
| 1IN− | Inverting input, Channel 1 | Differential input terminal with 10¹² Ω input resistance and 0.6 fA/√Hz noise current |
| 1IN+ | Non-inverting input, Channel 1 | Differential input terminal supporting common-mode voltages from VDD− to (VDD+ − 1.5 V) |
| VDD−/GND | Negative supply / Ground | Reference terminal for split-supply (±5 V) or single-supply (0 V) operation; connects directly to system ground plane |
| VDD+ | Positive supply | Primary power rail accepting 4.4 V to 16 V (single) or ±2.2 V to ±8 V (split); decoupling required within 1 cm |
| 2IN− | Inverting input, Channel 2 | Independent second amplifier input with identical electrical characteristics to Channel 1 |
| 2IN+ | Non-inverting input, Channel 2 | Second differential input pair enabling dual-channel signal conditioning on one die |
| 2OUT | Output, Channel 2 | Second rail-to-rail output with matched DC and AC performance to Channel 1 |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers usable dynamic range within 90 mV of both supply rails under 500-µA load - critical for maximizing ADC input utilization |
| Low input bias current | 1-pA typical enables high-fidelity amplification of signals from ultra-high-impedance sources (e.g., pH electrodes, photodiodes) |
| Low input voltage noise | 9 nV/√Hz at 1 kHz reduces integrated noise in bandwidth-limited sensor front-ends (e.g., <100 kHz ECG amplifiers) |
| Q-Temp automotive qualification | Rated for –40°C to +125°C operation with full parametric validation - suitable for engine bay and ADAS sensor modules |
| Split- and single-supply support | Fully specified for ±5 V and +5 V operation - eliminates need for level-shifting in mixed-voltage systems |
Applications
| White Goods Sensor Interface | Hand-held Battery Monitoring |
|---|---|
Use Scenario: Amplifying millivolt-level thermistor and pressure transducer outputs in refrigerator control boards. IC Role / Device Role / Timing Role: Dual-channel precision op-amp providing rail-to-rail output drive into 12-bit SAR ADC inputs. Use Value: Enables direct connection to 5-V ADC reference without level-shifting, reducing BOM count by one active component per channel. | Use Scenario: Signal conditioning for lithium-ion cell voltage and temperature sensing in portable multimeters. IC Role / Device Role / Timing Role: Low-power dual op-amp performing buffer and difference amplification prior to MCU ADC sampling. Use Value: 2.4-mA supply current per channel extends battery life beyond 100 hours in continuous measurement mode. |
| Transducer Interface Module | Industrial Analog I/O Conditioning |
Use Scenario: Front-end amplification of piezoelectric vibration sensor outputs in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: High-input-impedance amplifier with 1-pA bias current preserving signal integrity from >1-GΩ source impedances. Use Value: Eliminates need for JFET-input op-amps or discrete cascode buffers, simplifying layout and reducing cost. | Use Scenario: Isolated analog input conditioning for 4–20 mA loop receivers in PLC analog input modules. IC Role / Device Role / Timing Role: Precision dual op-amp implementing I/V conversion and offset correction before isolation barrier. Use Value: 950-µV max input offset ensures <0.02% full-scale error across –40°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2432IDR | Higher quiescent current (1.3 mA/channel), lower GBW (2.5 MHz), no automotive qualification | Targeted at commercial-grade portable equipment; lacks AEC-Q100 validation | Select when cost sensitivity outweighs automotive reliability requirements and higher supply current is acceptable |
| OPA2333AIDR | Zero-drift architecture, 2 µV max offset, 0.17 µV/°C drift, but 17-µA supply current per channel | Optimized for ultra-low-offset DC precision; not suited for high-speed or wide-bandwidth AC signals | Select when sub-10-µV offset stability over temperature is mandatory, and bandwidth <350 kHz suffices |
Compared with TLV2432IDR and OPA2333AIDR, the TLC2272AQD provides the only combination of Q-grade automotive qualification, rail-to-rail output, 1-pA input bias current, and 2.25-MHz bandwidth - making it uniquely suitable for high-impedance sensor interfaces in harsh-environment automotive and industrial control systems.
Availability
TLC2272AQD is available at Aetrix Electronics and suitable for white goods control, hand-held monitoring systems, transducer interfaces, and industrial analog I/O conditioning requiring stable component supply across extended temperature ranges.
Supply support for TLC2272AQD 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 and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The TLC227x family was engineered for rail-to-rail output performance in low-noise, low-input-bias-current applications - targeting sensor signal conditioning, battery-powered instrumentation, and automotive subsystems where dynamic range and source impedance compatibility are critical.
FAQ
What is the maximum operating temperature range for the TLC2272AQD?
The TLC2272AQD is qualified for operation from –40°C to +125°C per AEC-Q100 Grade 2 requirements. This rating is validated across all electrical parameters in the datasheet, including input offset voltage, common-mode rejection ratio, and output swing - making it suitable for under-hood automotive applications and industrial environments with elevated ambient temperatures. The TLC2272AQD maintains full functionality within this range without derating.
Does the TLC2272AQD support single-supply operation?
Yes, the TLC2272AQD is fully specified for single-supply operation at +5 V. Its common-mode input voltage range extends to VDD− (ground), and its rail-to-rail output can swing within 90 mV of both supply rails under 500-µA load. This allows direct interfacing with ground-referenced sensors and 5-V ADCs without level-shifting circuitry - a key advantage confirmed in Section 6.3 (Recommended Operating Conditions) and Figure 8-1 of the SLOS190H datasheet.
What is the input offset voltage specification for the TLC2272AQD?
The TLC2272AQD has a maximum input offset voltage of 950 µV at TA = 25°C, as specified for the "A" grade variant in Section 6.5 and 6.6 of the datasheet. Over the full operating temperature range (–40°C to +125°C), the maximum offset is 1500 µV. This value is guaranteed and tested - not typical - and applies to both ±5 V and +5 V supply conditions, enabling predictable DC accuracy in precision measurement circuits using the TLC2272AQD.
Can the TLC2272AQD drive capacitive loads without instability?
The TLC2272AQD is unity-gain stable with a phase margin of 52° and gain margin of 10 dB when driving a 100-pF capacitive load with 10-kΩ series resistance, as measured in Section 6.6. While it tolerates moderate capacitive loading, direct connection to >100-pF loads (e.g., long PCB traces or unbuffered ADC inputs) may degrade transient response or cause ringing. For such cases, a small series resistor (10–50 Ω) between the TLC2272AQD output and the capacitive load restores stability without compromising bandwidth.
How does the TLC2272AQD differ from the standard TLC2272QD?
The "A" suffix in TLC2272AQD denotes tighter input offset voltage specifications: 950 µV maximum at 25°C versus 2500 µV for the base TLC2272QD. Both share identical pinout, package (SOIC-8), rail-to-rail output, noise (9 nV/√Hz), and bandwidth (2.25 MHz). The "A" grade is selected when DC precision is critical - such as in strain gauge bridges or thermocouple amplifiers - whereas the standard grade suffices for AC-coupled or less demanding DC applications using the TLC2272AQD's enhanced offset performance.
TLC2272AQD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- 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:
- 2.4mA (x2 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC2272AQD FAQ
1.How can I place an order for TLC2272AQD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2272AQD 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 TLC2272AQD reliable?
The price and inventory of TLC2272AQD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2272AQD is usually 5 days.
3.What payment methods are accepted for TLC2272AQD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2272AQD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2272AQD?
TLC2272AQD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2272AQD 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 TLC2272AQD?
For technical support, including TLC2272AQD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2272AQD requirements.
6.How does Aetrix verify that TLC2272AQD is sourced from the original manufacturer or authorized distributors?
All TLC2272AQD 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 TLC2272AQD meets industry standards.
7.What is the process for return or replacement of TLC2272AQD?
All TLC2272AQD units undergo pre-shipment inspection (PSI). If there is an issue with TLC2272AQD, 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 TLC2272AQD part is unused and in its original packaging.
Return procedure for TLC2272AQD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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