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Texas Instruments TLC2252CD
- Part No.:
- TLC2252CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2252CD.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,648
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Product details
Overview
TLC2252CD from Texas Instruments is a dual rail-to-rail output operational amplifier in the Advanced LinCMOS™ family, designed for micropower precision signal conditioning. It delivers 35 µA per channel supply current, 19 nV/√Hz input voltage noise at 1 kHz, and 1500 µV max input offset voltage at 25°C, enabling use in battery-powered sensor interfaces and single-supply data acquisition systems.
For engineers reviewing the TLC2252CD datasheet, TLC2252CD pinout, TLC2252CD application, or TLC2252CD equivalent, this page provides verified specifications, package-validated pin functions, real-world application context for low-power analog front-ends, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The TLC2252CD uses a complementary metal-oxide-semiconductor (CMOS) input stage with rail-to-rail output swing, supporting operation from ±2.2 V to ±8 V supplies or single 4.4 V to 16 V rails. Its input common-mode range extends to the negative rail, and its high input impedance (>10¹² Ω) minimizes loading on high-impedance sources like piezoelectric transducers.
Internally, the device features matched transistor pairs and laser-trimmed resistors to achieve low input offset drift (0.5 µV/°C) and stable DC performance across temperature. The macro-model included in the datasheet supports accurate SPICE simulation of closed-loop behavior in unity-gain buffers and active filters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 70–125 µA per channel at 25°C - enables multi-year operation on coin-cell batteries in portable instrumentation. |
| Input Offset Voltage | ≤1500 µV at 25°C - sufficient for 12-bit ADC interfacing without trimming in cost-sensitive industrial sensors. |
| Input Bias Current | 1 pA typical - preserves signal integrity when amplifying outputs from photodiodes or pH electrodes. |
| Input Voltage Noise | 19 nV/√Hz at 1 kHz - four times lower than legacy micropower CMOS op-amps, critical for low-frequency sensor signal recovery. |
| Output Swing | Rail-to-rail - delivers full dynamic range into ADCs operating at same supply, eliminating level-shifting circuitry. |
| Common-Mode Input Range | Includes negative rail - allows direct amplification of ground-referenced signals in single-supply systems. |
| Gain-Bandwidth Product | 0.2 MHz - supports stable unity-gain buffering and low-frequency filtering up to ~30 kHz bandwidth. |
Pinout & Package
The TLC2252CD is housed in an 8-pin SOIC (D) package with standard dual-op-amp pinout and no internal connections on unused pins.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier 1) | Accepts differential input signal; high-impedance node requiring guarded layout for low-noise operation. |
| 2 | Non-Inverting Input (Amplifier 1) | Reference input for follower or summing configurations; tied to sensor ground or reference voltage. |
| 3 | Output (Amplifier 1) | Rail-to-rail capable output driving ADC inputs, RC filters, or low-power comparators. |
| 4 | Ground / Negative Supply | Return path for both amplifiers; must be low-impedance to minimize PSRR degradation. |
| 5 | Positive Supply | Accepts single 4.4–16 V or split ±2.2–±8 V; decoupling capacitor required within 1 cm. |
| 6 | Inverting Input (Amplifier 2) | Independent input for second signal path; shares supply rails but not internal bias networks. |
| 7 | Non-Inverting Input (Amplifier 2) | Enables dual-channel signal conditioning without cross-talk in compact PCB layouts. |
| 8 | Output (Amplifier 2) | Second rail-to-rail output; usable for differential driver stages or independent sensor channels. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale output voltage range (within 10 mV of rails) under load, maximizing SNR when driving SAR or sigma-delta ADCs. |
| Low input bias current (1 pA typ) | Minimizes voltage error across high-value feedback resistors (>1 MΩ), preserving gain accuracy in transimpedance amplifiers. |
| Specified for single- and split-supply operation | Eliminates need for external level shifters or dual power supplies in mixed-signal systems using 3.3 V or 5 V logic domains. |
| 19 nV/√Hz input voltage noise | Enables resolution of sub-millivolt signals from thermocouples or strain gauges without additional low-noise preamplification. |
| Macromodel included | SPICE model validated against production test data supports accurate transient and AC analysis of closed-loop stability and settling time. |
Applications
| Portable Gas Sensor Front-End | Industrial Temperature Monitoring |
|---|---|
Use Scenario: Amplifying low-level current output from electrochemical gas sensors powered by CR2032 batteries. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier converting nanoamp sensor currents to buffered voltage outputs for 12-bit ADC sampling. Use Value: 35 µA per channel supply current extends battery life beyond 5 years; rail-to-rail output ensures full utilization of ADC input range. | Use Scenario: Signal conditioning for Pt100 RTD bridges in DIN-rail mounted PLC I/O modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier stage with matched gain-setting resistors and low-drift DC performance. Use Value: 1500 µV max input offset limits temperature measurement error to <±0.3°C over 0–70°C ambient range. |
| Wearable Biopotential Monitor | Smart Home Environmental Hub |
Use Scenario: Amplifying microvolt-level ECG/EMG signals from dry electrodes in ultra-low-power wearables. IC Role / Device Role / Timing Role: First-stage AC-coupled amplifier with high-pass filtering and gain, followed by rail-to-rail buffer to ADC. Use Value: 1 pA input bias current prevents electrode polarization drift; 19 nV/√Hz noise maintains clinical-grade signal fidelity. | Use Scenario: Simultaneous conditioning of humidity, pressure, and VOC sensor outputs in battery-operated smart home hubs. IC Role / Device Role / Timing Role: Multi-channel signal conditioner providing gain, offset correction, and anti-aliasing filtering before multiplexed ADC conversion. Use Value: Dual configuration reduces component count by 50% versus single-amplifier solutions; SOIC-8 footprint simplifies automated assembly. |
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 |
|---|---|---|---|
| TLC2272CD | Higher slew rate (1.7 V/µs vs. 0.12 V/µs), 1.7 MHz GBW, 1200 µV max VIO - trades micropower for speed. | Better suited for active filters above 10 kHz or fast-settling sample-and-hold circuits. | Select when bandwidth >100 kHz is required; avoid if battery life is primary constraint. |
| TLV2432IDR | Lower input offset (500 µV max), rail-to-rail I/O, 600 µA/ch supply - higher power, improved DC precision. | Preferred for precision weigh scales or medical diagnostics where offset drift dominates error budget. | Choose for <±0.1°C RTD accuracy; not viable for >2-year battery operation. |
Compared with TLC2272CD and TLV2432IDR, the TLC2252CD uniquely balances ultra-low quiescent current (70 µA/ch), rail-to-rail output, and adequate DC precision (1500 µV VIO) for long-life, cost-sensitive sensor nodes where speed is secondary to energy efficiency.
Availability
TLC2252CD is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and battery-powered environmental monitors requiring stable component supply across extended product lifecycles.
Supply support for TLC2252CD 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 heritage in precision op-amp design and manufacturing.
The TLC225x family was engineered specifically for micropower, rail-to-rail signal conditioning in battery-operated and space-constrained industrial and medical sensing applications.
FAQ
What is the maximum supply voltage rating for the TLC2252CD?
The TLC2252CD has an absolute maximum supply voltage rating of ±8 V for split-supply operation or 16 V for single-supply operation. Operation beyond these limits risks permanent damage. Recommended operating range is ±2.2 V to ±8 V or 4.4 V to 16 V, with thermal derating applied above 25°C ambient per the dissipation rating table in the TLC2252CD datasheet.
Does the TLC2252CD support true rail-to-rail input common-mode range?
No - the TLC2252CD supports rail-to-rail *output* swing but only extends its input common-mode range to the negative rail (VDD–/GND), not the positive rail. The maximum input voltage is typically VDD+ – 1.5 V under recommended conditions, as specified in the datasheet's "Recommended Operating Conditions" table. This limitation must be considered when designing high-side sensing circuits.
Can the TLC2252CD drive capacitive loads directly?
The TLC2252CD exhibits stable phase margin (63°) with 100 pF capacitive load and 50 kΩ resistive load, per the datasheet's operating characteristics. However, direct driving of larger capacitive loads (>1000 pF) without isolation resistance may cause peaking or oscillation. For ADC input buffering, a 10–100 Ω series resistor between TLC2252CD output and capacitor is recommended to ensure stability.
How does the TLC2252CD compare to the TLC27L2 in terms of noise performance?
The TLC2252CD delivers 19 nV/√Hz input voltage noise at 1 kHz - approximately four times lower than the TLC27L2's typical 75 nV/√Hz. This improvement stems from optimized LinCMOS™ input stage design and reduced flicker noise, making the TLC2252CD significantly better suited for low-frequency sensor signal amplification where noise dominates system resolution.
Is the TLC2252CD pin-compatible with other dual op-amps in SOIC-8 packages?
The TLC2252CD follows the industry-standard dual op-amp pinout (pin 1 = OUT A, pin 2 = –IN A, pin 3 = +IN A, pin 4 = GND, pin 5 = V+, pin 6 = –IN B, pin 7 = +IN B, pin 8 = OUT B), matching devices like LM358, TL072, and TLC2272. However, electrical differences - especially supply current, input bias, and output drive - require validation in the target circuit before substitution.
TLC2252CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC2252CD FAQ
1.How can I place an order for TLC2252CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2252CD 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 TLC2252CD reliable?
The price and inventory of TLC2252CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2252CD is usually 5 days.
3.What payment methods are accepted for TLC2252CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2252CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2252CD?
TLC2252CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2252CD 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 TLC2252CD?
For technical support, including TLC2252CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2252CD requirements.
6.How does Aetrix verify that TLC2252CD is sourced from the original manufacturer or authorized distributors?
All TLC2252CD 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 TLC2252CD meets industry standards.
7.What is the process for return or replacement of TLC2252CD?
All TLC2252CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC2252CD, 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 TLC2252CD part is unused and in its original packaging.
Return procedure for TLC2252CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC2252CD Tags
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