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Texas Instruments TLC2252AQD
- Part No.:
- TLC2252AQD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2252AQD.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,895
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Product details
Overview
TLC2252AQD from Texas Instruments is a dual rail-to-rail output, very low-power operational amplifier designed for precision analog signal conditioning in automotive and industrial environments. It delivers 35 µA per channel supply current, 19 nV/√Hz input voltage noise at 1 kHz, 850 µV max input offset voltage at 25°C, and common-mode input range extending to the negative rail - enabling high-accuracy sensing in single-supply battery-powered systems.
For engineers reviewing the TLC2252AQD datasheet, TLC2252AQD pinout, TLC2252AQD application, or TLC2252AQD equivalent, key selection criteria include its Q-temp automotive qualification (–40°C to +125°C), rail-to-rail output swing, ultra-low input bias current (1 pA typ), and compatibility with ADC interface circuits requiring wide dynamic range and micropower operation.
Technical Context
The TLC2252AQD 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 the negative supply rail, and its output can drive loads within 100 mV of both rails under typical conditions.
It is fully specified for both single-supply (e.g., 5 V) and split-supply (±5 V) operation, with guaranteed performance across –40°C to +125°C. The device exhibits 70 dB minimum CMRR and 80 dB minimum PSRR over temperature, supporting stable DC-coupled amplification in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 35 µA per channel - enables multi-year battery life in portable sensors and remote monitoring nodes. |
| Input Offset Voltage | 850 µV max at 25°C - supports sub-millivolt DC accuracy without trimming in cost-sensitive systems. |
| Input Bias Current | 1 pA typical - preserves signal integrity when amplifying high-impedance sources like piezoelectric transducers. |
| Input Voltage Noise | 19 nV/√Hz at 1 kHz - 4× lower than prior micropower CMOS op-amps, improving SNR in low-level signal chains. |
| Common-Mode Input Range | Includes negative rail - allows direct interfacing with ground-referenced sensors in single-supply configurations. |
| Output Swing | Rail-to-rail - maximizes dynamic range into ADCs operating at same supply, reducing need for level-shifting. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and harsh industrial applications. |
Pinout & Package
The TLC2252AQD is housed in an 8-pin SOIC (D) package with standard dual-op-amp pinout and no internal NC pins.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input of amplifier A | Accepts feedback network for closed-loop gain configuration; high-impedance node sensitive to PCB leakage. |
| 2 | Non-inverting input of amplifier A | Connects to high-Z sensor outputs; benefits from guard traces due to 1 pA input bias current. |
| 3 | Output of amplifier A | Drives capacitive loads up to 100 pF stably; rail-to-rail swing supports full-scale ADC input utilization. |
| 4 | Negative supply / Ground | Reference for both amplifiers; must be low-impedance to maintain PSRR and prevent common-mode error. |
| 5 | Positive supply | Supports 2.2 V to 8 V single-supply or ±2.2 V to ±8 V split-supply operation; decoupling required near pin. |
| 6 | Inverting input of amplifier B | Independent high-Z input; layout symmetry with Pin 1 recommended for matched thermal drift. |
| 7 | Non-inverting input of amplifier B | Matches Pin 2 electrical behavior; suitable for differential pair or independent sensor channel. |
| 8 | Output of amplifier B | Functionally identical to Pin 3; enables dual-channel signal conditioning on single IC with shared supply pins. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Enables full utilization of ADC input range in 5 V or ±5 V systems without external level-shifting circuitry. |
| Ultra-low input bias current | 1 pA typical ensures minimal voltage error across high-value feedback resistors (>1 MΩ), preserving gain accuracy. |
| Low-noise architecture | 19 nV/√Hz at 1 kHz reduces integrated noise in bandwidth-limited sensor interfaces, improving resolution. |
| Automotive-grade qualification | Q-temp AEC-Q100 stress-tested and controlled for production release in safety-critical vehicle subsystems. |
| Single- and split-supply support | Eliminates need for separate op-amp families across design variants - simplifies BOM and layout reuse. |
Applications
| Automotive Cabin Pressure Sensing | Industrial Thermocouple Signal Conditioning |
|---|---|
Use Scenario: Amplifying millivolt-level output from MEMS pressure transducers in HVAC control modules, operating continuously at 125°C ambient. IC Role / Device Role / Timing Role: Dual-channel DC-coupled amplifier providing gain and rail-to-rail buffering before 12-bit SAR ADC sampling. Use Value: 850 µV max VIO and –40°C to +125°C operation ensure <1% full-scale error over lifetime without calibration. | Use Scenario: Cold-junction compensation and linearization of K-type thermocouple signals in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with low input bias current to avoid thermocouple wire shunt errors. Use Value: 1 pA IIB prevents >10 µV error across 10 kΩ thermocouple loop resistance, preserving ±0.5°C measurement accuracy. |
| Portable Medical ECG Front-End | Battery-Powered Environmental Data Logger |
Use Scenario: Biopotential amplification in handheld ECG devices powered by coin-cell batteries, requiring multi-week runtime. IC Role / Device Role / Timing Role: First-stage gain and filtering amplifier with ultra-low power consumption and low-frequency noise optimization. Use Value: 35 µA per channel total supply current extends battery life beyond 30 days while maintaining 0.5 µVPP input-referred noise (0.1–10 Hz). | Use Scenario: Analog signal conditioning for soil moisture and ambient light sensors in solar-powered agricultural IoT nodes. IC Role / Device Role / Timing Role: Micropower sensor interface driving successive-approximation ADC during periodic wake-up cycles. Use Value: Rail-to-rail output swing ensures full 0–3.3 V ADC range usage from 3.3 V supply, maximizing effective resolution without external references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2432IDR | Higher supply current (600 µA/ch), higher output drive (±25 mA), but wider input voltage range (rail-to-rail in/out). | Suitable for driving heavier loads or higher-speed settling; not optimized for multi-year battery life. | Select TLV2432IDR when output current >5 mA or AC-coupled signal paths dominate; avoid for micropower longevity-critical designs. |
| OPA2333AIDR | Zero-drift architecture, 2 µV max VIO, 17 µA/ch supply current, but limited output swing (within 10 mV of rails) and narrower temp range (–40°C to +125°C same). | Better for ultra-precision DC applications where long-term drift matters more than raw noise floor. | Choose OPA2333AIDR only when sub-µV offset stability over time outweighs need for 19 nV/√Hz noise performance. |
Compared with TLV2432IDR and OPA2333AIDR, the TLC2252AQD uniquely balances micropower operation (35 µA/ch), low broadband noise (19 nV/√Hz), and automotive temperature capability - making it optimal for cost-sensitive, battery-constrained, high-SNR analog front-ends where zero-drift isn't mandatory.
Availability
TLC2252AQD is available at Aetrix Electronics and suitable for automotive cabin control, industrial sensor modules, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLC2252AQD 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 experience in high-reliability automotive and industrial components.
The TLC225x family was engineered specifically for rail-to-rail output precision amplification in micropower, high-impedance sensor interfaces - targeting automotive, industrial, and portable instrumentation markets where supply constraints and signal fidelity coexist.
FAQ
What is the maximum operating temperature range for the TLC2252AQD?
The TLC2252AQD is rated for continuous operation from –40°C to +125°C and is qualified to AEC-Q100 Grade 1 standards for automotive applications. This rating is explicitly confirmed in the "TLC2252 AVAILABLE OPTIONS" table, where the Q suffix denotes the –40°C to +125°C grade, and the D package (SOIC) is listed for TLC2252AQD. No derating is required within this full range for parameters including supply current, input offset voltage, and output swing.
Does the TLC2252AQD support true rail-to-rail input common-mode range?
The TLC2252AQD supports rail-to-rail *output* swing but does not provide rail-to-rail *input* common-mode range. Per the "recommended operating conditions" table, the common-mode input voltage range is specified as VDD– to VDD+ – 1.5 V for all grades. For example, with VDD+ = 5 V and VDD– = 0 V, the valid input range is 0 V to 3.5 V - meaning the input cannot safely reach the positive rail. This is consistent across all TLC2252 variants, including the AQD.
What is the typical input bias current of the TLC2252AQD, and why does it matter?
The TLC2252AQD has a typical input bias current of 1 pA, with a maximum of 100 pA over temperature. This ultra-low value minimizes voltage drop across high-impedance source impedances (e.g., pH electrodes or piezoelectric sensors), preventing gain error and signal attenuation. In practice, it allows use of >10 MΩ feedback resistors without significant offset contribution - a critical advantage in precision, high-Z analog front-ends where the TLC2252AQD is commonly deployed.
Can the TLC2252AQD drive a 100 pF capacitive load stably?
Yes, the TLC2252AQD maintains stability with a 100 pF capacitive load, as confirmed by phase margin (63°) and gain margin (15 dB) measurements in the "operating characteristics" tables under both 5 V and ±5 V supply conditions. These values meet industry stability thresholds for unity-gain configurations. However, for loads exceeding 100 pF or in high-gain configurations, external isolation resistance (e.g., 10–50 Ω in series with the output) is recommended to preserve phase margin.
How does the TLC2252AQD differ from the standard TLC2252QD?
The TLC2252AQD differs from the TLC2252QD primarily in input offset voltage specification: the "A" grade guarantees ≤850 µV max at 25°C and ≤1000 µV over full temperature range, whereas the non-A grade (TLC2252QD) specifies ≤1500 µV max at 25°C and ≤1750 µV over temperature. Both share identical package (SOIC-D), temperature range (–40°C to +125°C), supply current (35 µA/ch), noise (19 nV/√Hz), and pinout. The "A" grade is selected for higher DC precision requirements.
TLC2252AQD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.12V/µs
- Gain Bandwidth Product:
- 210 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 80µA (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
TLC2252AQD FAQ
1.How can I place an order for TLC2252AQD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2252AQD 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 TLC2252AQD reliable?
The price and inventory of TLC2252AQD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2252AQD is usually 5 days.
3.What payment methods are accepted for TLC2252AQD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2252AQD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2252AQD?
TLC2252AQD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2252AQD 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 TLC2252AQD?
For technical support, including TLC2252AQD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2252AQD requirements.
6.How does Aetrix verify that TLC2252AQD is sourced from the original manufacturer or authorized distributors?
All TLC2252AQD 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 TLC2252AQD meets industry standards.
7.What is the process for return or replacement of TLC2252AQD?
All TLC2252AQD units undergo pre-shipment inspection (PSI). If there is an issue with TLC2252AQD, 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 TLC2252AQD part is unused and in its original packaging.
Return procedure for TLC2252AQD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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