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Texas Instruments TLC4502ID
- Part No.:
- TLC4502ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4502ID.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,475
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Product details
Overview
TLC4502ID from Texas Instruments is a dual-channel, self-calibrating precision CMOS rail-to-rail output operational amplifier designed for high-accuracy single-supply signal conditioning. It achieves 40 µV max input offset voltage (after calibration), 1 µV/°C drift, 1 pA input bias current, and delivers ±50 mA output drive with 4.7 MHz gain-bandwidth product - enabling precision data acquisition in industrial temperature ranges.
For engineers reviewing the TLC4502ID datasheet, TLC4502ID pinout, TLC4502ID application, or TLC4502ID equivalent, this page provides verified technical context on its self-calibration architecture, rail-to-rail output behavior, thermal stability across –40°C to 125°C, and real-world suitability for load-cell interfaces, portable instrumentation, and automotive sensor signal chains.
Technical Context
The TLC4502ID integrates digital self-calibration circuitry that performs an initial offset trim within 300 ms of power-up, storing correction data in an internal successive approximation register (SAR) before dropping out of the signal path. This eliminates chopper noise and avoids laser trimming while maintaining standard op-amp functionality post-calibration.
It operates from 4 V to 6 V supply, supports rail-to-rail output swing (0.01 V to 4.99 V at 5 V), drives 1000 pF capacitive loads stably, and maintains 85 dB common-mode rejection ratio over full temperature range - making it suitable for high-impedance sensor front-ends requiring low drift and high DC accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 40 µV after self-calibration - enables sub-0.01% error in 12-bit+ measurement systems without external trimming |
| Offset Drift | 1 µV/°C - ensures stable DC gain over industrial temperature range (–40°C to 125°C) |
| Input Bias Current | 1 pA typical - preserves signal integrity in high-Z source applications like piezoelectric sensors or pH electrodes |
| Gain-Bandwidth Product | 4.7 MHz - supports closed-loop gains up to ~100 at 47 kHz with phase margin >74° |
| Slew Rate | 2.5 V/µs - allows 10 Vpp output at 100 kHz without slew-induced distortion |
| Output Drive | ±50 mA - directly drives ADC reference buffers, LED drivers, or low-impedance transducers |
| Calibration Time | 300 ms - completes auto-zero before system initialization routines conclude |
Pinout & Package
Package: SOIC-8 (D package), 150 mil width, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of Channel 1 - rail-to-rail swing (0.01 V to 4.99 V @ 5 V supply) |
| 2 | 1IN– | Inverting input of Channel 1 - high-impedance node (10¹² Ω) for precision feedback networks |
| 3 | 1IN+ | Non-inverting input of Channel 1 - accepts common-mode signals from VDD– to VDD+ – 2.3 V |
| 4 | VDD–/GND | Ground reference for single-supply operation - also serves as negative rail in split-supply configurations |
| 5 | 2IN+ | Non-inverting input of Channel 2 - electrically isolated from Channel 1 inputs |
| 6 | 2IN– | Inverting input of Channel 2 - matched bias current and offset characteristics to Channel 1 |
| 7 | 2OUT | Output of Channel 2 - independent output stage with same drive capability and settling specs as Channel 1 |
| 8 | VDD+ | Positive supply rail - operates from 4 V to 6 V; ESD rated >2 kV |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibrating Offset | Digitally trims input offset to ≤40 µV within 300 ms using internal SAR register - no external components or host intervention required |
| Rail-to-Rail Output | Swings within 10 mV of rails at 5 mA load - maximizes dynamic range in 3.3 V or 5 V systems |
| Capacitive Load Drive | Stable with up to 1000 pF - eliminates need for isolation resistors when driving ADC input capacitance or long traces |
| Wide Temperature Range | Specified from –40°C to 125°C - qualified for automotive and industrial environments per AEC-Q100 stress test conditions |
| Low Input Noise | 12 nV/√Hz at 1 kHz - supports high-resolution analog front-ends without added noise amplification |
Applications
| Load-Cell Signal Conditioning | Portable Digital Scale Front-End |
|---|---|
Use Scenario: Amplifying microvolt-level bridge outputs from strain gauges in industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core (configured as difference amplifier) with integrated offset calibration. Use Value: Eliminates manual zeroing and reduces temperature-induced drift errors below 0.02% FS over –25°C to 85°C ambient. | Use Scenario: Signal chain for battery-powered handheld scales measuring 1 g to 30 kg with 0.1 g resolution. IC Role / Device Role / Timing Role: First-stage gain and offset correction block before 24-bit sigma-delta ADC. Use Value: Self-calibration ensures factory-zero remains valid across battery discharge cycles and ambient shifts, extending recalibration intervals to >12 months. |
| Automotive Pressure Sensor Interface | Medical Patient Monitor Analog Front-End |
Use Scenario: Conditioning output of MEMS-based manifold absolute pressure (MAP) sensors in engine control units. IC Role / Device Role / Timing Role: Rail-to-rail output buffer and gain stage operating from 5 V supply in under-hood environment. Use Value: 125°C rating and 1 µV/°C drift enable direct mounting near sensor, reducing wiring errors and EMI pickup in noisy engine bays. | Use Scenario: Biopotential signal amplification (ECG, EMG) where DC accuracy and low-frequency noise define diagnostic fidelity. IC Role / Device Role / Timing Role: High-input-impedance, low-drift gain stage preceding anti-alias filtering and digitization. Use Value: 1 pA input bias current prevents electrode polarization errors; 40 µV offset ensures baseline stability during multi-minute patient monitoring sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2188IDR | Zero-drift architecture (chopper-stabilized), 0.003 µV/°C drift, 8 MHz GBW, but higher 1/f noise and 1.1 mA supply current | Better long-term drift stability but unsuitable for low-noise audio or high-speed pulse applications due to chopping artifacts | Select OPA2188IDR only when ultra-low drift dominates over noise and power constraints |
| AD8629ARZ-REEL7 | Zero-drift, 0.002 µV/°C drift, 2.5 MHz GBW, 1.2 V/µs slew rate, 1.2 mA supply current, specified to –40°C to 125°C | Lower bandwidth and slew rate limit use in fast-settling multiplexed data acquisition systems | Choose AD8629ARZ-REEL7 for ultra-low-drift DC-coupled applications where speed is secondary to offset stability |
Compared with OPA2188IDR and AD8629ARZ-REEL7, the TLC4502ID offers superior slew rate (2.5 V/µs vs ≤1.2 V/µs) and lower quiescent current (3.5 mA vs ≥1.1 mA), making it optimal for cost-sensitive, medium-speed industrial sensor interfaces where self-calibration suffices and zero-drift artifacts must be avoided.
Availability
TLC4502ID is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive pressure sensing, and portable medical instrumentation requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLC4502ID 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-amps and automotive-grade components.
The TLC4502ID belongs to TI's Self-Cal™ family of precision CMOS op-amps, engineered specifically for high-accuracy, single-supply industrial and automotive signal conditioning where traditional trimming methods add cost and complexity.
FAQ
What is the self-calibration mechanism used in the TLC4502ID?
The TLC4502ID uses an integrated digital self-calibration circuit that measures and corrects input offset voltage during power-up. Within 300 ms, it applies a known test signal, digitizes the resulting error via an internal successive approximation register (SAR), stores the correction value, then removes itself from the signal path - leaving a standard precision op-amp with ≤40 µV offset. This occurs autonomously without host processor involvement or external components.
Does the TLC4502ID require external components to achieve rail-to-rail output performance?
No, the TLC4502ID achieves true rail-to-rail output swing (within 10 mV of VDD+ and VDD–/GND) using internal complementary output stages - no external charge pumps, level shifters, or bootstrap circuits are needed. Its output can deliver ±50 mA while maintaining linearity across the full supply range, simplifying design for single-supply systems operating at 3.3 V or 5 V.
How does the TLC4502ID handle capacitive loads, and what is the maximum stable value?
The TLC4502ID is internally compensated to remain stable with capacitive loads up to 1000 pF - a key advantage over many general-purpose op-amps that oscillate or ring with >100 pF. This allows direct connection to ADC input capacitors, long PCB traces, or LCD driver lines without series isolation resistors, preserving signal integrity and reducing bill-of-materials count in data acquisition designs.
What is the operating temperature range for the TLC4502ID, and how is it qualified?
The TLC4502ID is rated for operation from –40°C to 125°C and is qualified to automotive-grade reliability standards including AEC-Q100 stress testing. Its electrical specifications - including 40 µV max offset, 1 µV/°C drift, and 85 dB CMRR - are guaranteed across this full range, making it suitable for under-hood automotive applications, industrial PLC modules, and outdoor environmental monitoring equipment.
Can the TLC4502ID be used in dual-supply configurations, and what are the supply voltage limits?
Yes, the TLC4502ID supports both single-supply (e.g., VDD+ = 5 V, VDD–/GND = 0 V) and split-supply (e.g., VDD+ = +2.5 V, VDD–/GND = –2.5 V) operation. Absolute maximum supply voltage is 7 V differential (VDD+ to VDD–), with recommended operating range of 4 V to 6 V total. Input common-mode range extends from VDD– to VDD+ – 2.3 V, allowing robust interfacing with sensors referenced to either rail.
TLC4502ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- 4.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 2.5mA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC4502ID FAQ
1.How can I place an order for TLC4502ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4502ID 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 TLC4502ID reliable?
The price and inventory of TLC4502ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4502ID is usually 5 days.
3.What payment methods are accepted for TLC4502ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4502ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4502ID?
TLC4502ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4502ID 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 TLC4502ID?
For technical support, including TLC4502ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4502ID requirements.
6.How does Aetrix verify that TLC4502ID is sourced from the original manufacturer or authorized distributors?
All TLC4502ID 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 TLC4502ID meets industry standards.
7.What is the process for return or replacement of TLC4502ID?
All TLC4502ID units undergo pre-shipment inspection (PSI). If there is an issue with TLC4502ID, 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 TLC4502ID part is unused and in its original packaging.
Return procedure for TLC4502ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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