My Inquiry
My Account
Texas Instruments TLC4502AID
- Part No.:
- TLC4502AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4502AID.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:219
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC4502AID from Texas Instruments is a dual-channel, self-calibrating precision CMOS rail-to-rail output operational amplifier designed for high-accuracy signal conditioning in single-supply systems. It achieves 40 µV max input offset voltage (at –40°C to 125°C), 1 µV/°C drift, 1 pA input bias current, and delivers ±50 mA output drive with 4.7 MHz gain-bandwidth and 2.5 V/µs slew rate - enabling use in portable digital scales and industrial sensor front-ends.
For engineers reviewing the TLC4502AID datasheet, TLC4502AID pinout, TLC4502AID application, or TLC4502AID equivalent, key selection criteria include its guaranteed 40 µV VIO over extended temperature, self-calibration time of 300 ms, rail-to-rail output swing, stability with 1000 pF capacitive loads, and compatibility with 4–6 V supply rails in harsh-environment measurement systems.
Technical Context
The TLC4502AID integrates digital self-calibration circuitry that performs an initial offset trim within 300 ms of power-up, storing correction data in an on-chip successive approximation register (SAR) before disconnecting from the signal path. This architecture eliminates chopper noise and avoids laser trimming while maintaining standard op-amp behavior post-calibration.
It operates across –40°C to 125°C with 4–6 V supply range, supports rail-to-rail output swing (0.01 V to 4.99 V at 5 V), and remains stable driving ≥1000 pF loads - a critical capability for driving ADC input buffers or long traces without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (VIO) | 40 µV max over –40°C to 125°C - enables sub-16-bit accuracy in 5 V full-scale systems without trimming. |
| Offset Drift (αVIO) | 1 µV/°C - ensures <100 µV total drift over full temperature range, critical for unattended industrial monitoring. |
| Input Bias Current | 1 pA typical - allows high-impedance sensor interfaces (e.g., pH electrodes, piezoresistive bridges) without significant error. |
| Gain-Bandwidth Product | 4.7 MHz - supports closed-loop gains up to ~100 at 47 kHz, suitable for anti-aliasing and active filtering. |
| Slew Rate | 2.5 V/µs - enables 0.5–2.5 V step response settling to 0.1% in 1.6 µs, sufficient for fast data acquisition sampling. |
| Output Drive | ±50 mA - drives low-impedance loads (e.g., 100 Ω termination, LED indicators) directly without external buffers. |
| Calibration Time | 300 ms - completes auto-zero before system initialization completes, ensuring first-sample accuracy in embedded firmware. |
Pinout & Package
Package: SOIC-8 (D package), 8-pin small-outline integrated circuit with gull-wing leads, rated for –40°C to 125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Channel A output | Delivers rail-to-rail voltage swing (0.01 V to 4.99 V at 5 V); capable of ±50 mA sourcing/sinking. |
| 2 (IN– A) | Channel A inverting input | High-impedance node (1012 Ω) with 1 pA bias current; accepts common-mode voltages from VDD– to VDD+ – 2.3 V. |
| 3 (IN+ A) | Channel A non-inverting input | Matches IN– A in impedance and bias; used for unity-gain buffers or precision differential sensing. |
| 4 (VDD–/GND) | Negative supply / ground reference | Single-supply operation: tied to GND; dual-supply operation: connected to negative rail (e.g., –2.5 V). |
| 5 (IN+ B) | Channel B non-inverting input | Independent input for second channel; identical specs to Channel A, enabling dual-sensor conditioning. |
| 6 (IN– B) | Channel B inverting input | Matches Channel A inputs; supports independent feedback networks per channel. |
| 7 (OUT B) | Channel B output | Electrically isolated from OUT A; shares same drive strength and rail-to-rail swing capability. |
| 8 (VDD+) | Positive supply | Accepts 4–6 V; internal regulation ensures stable calibration and amplification across supply variation. |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibrating Offset Trim | Digitally trims input offset to ≤40 µV within 300 ms at power-on, then removes calibration circuitry from signal path to eliminate noise and power overhead. |
| Rail-to-Rail Output | Swings within 10 mV of each rail (0.01 V to 4.99 V at 5 V), maximizing dynamic range for ADC interfacing and low-voltage systems. |
| Capacitive Load Stability | Stable with ≥1000 pF load capacitance - eliminates need for isolation resistors when driving ADC inputs or long PCB traces. |
| Extended Temperature Range | Specified from –40°C to 125°C - qualified for automotive under-hood and industrial control cabinet applications. |
| Ultra-Low Input Bias Current | 1 pA typical - preserves signal integrity in high-Z sensor circuits (e.g., thermopiles, photodiodes) without guard rings or leakage compensation. |
Applications
| Strain Gauge Signal Conditioning | Portable Digital Scale Front-End |
|---|---|
Use Scenario: Amplifying microvolt-level bridge outputs from metal foil strain gauges in load cells, with minimal drift over temperature cycling. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier core (one channel for excitation monitoring, one for differential output amplification). Use Value: 40 µV VIO and 1 µV/°C drift ensure <0.01% FS error over –40°C to 125°C, eliminating manual recalibration in field-deployed equipment. | Use Scenario: Battery-powered weighing systems requiring high resolution (≤1 g) and long-term zero stability without user intervention. IC Role / Device Role / Timing Role: Precision analog front-end for 24-bit sigma-delta ADC, providing gain, offset correction, and rail-to-rail drive into ADC reference buffer. Use Value: Self-calibration at power-on guarantees first-measurement accuracy; 1 pA input bias prevents zero-drift in high-impedance Wheatstone bridge configurations. |
| Industrial Process Sensor Interface | Automotive Pressure Transducer Signal Chain |
Use Scenario: Converting 4–20 mA loop signals or RTD/thermocouple outputs in PLC analog input modules operating in factory environments. IC Role / Device Role / Timing Role: Programmable-gain amplifier stage with precision offset nulling prior to ADC digitization. Use Value: Guaranteed 40 µV VIO max over full temperature range enables 16-bit+ effective resolution without factory trimming, reducing BOM and test cost. | Use Scenario: Signal conditioning for piezoresistive pressure sensors in engine manifolds or brake systems exposed to thermal shock and vibration. IC Role / Device Role / Timing Role: High-reliability dual op-amp for ratiometric amplification and supply rejection in Q-grade automotive modules. Use Value: Qualified to automotive standards with –40°C to 125°C operation and 90 dB PSRR ensures stable output despite battery ripple and alternator noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Zero-drift architecture with 50 nV offset and 0.1 µV/°C drift; higher 10 MHz GBW but lower 20 mA output drive. | Better DC precision and drift, but insufficient drive for direct ADC buffering or LED indication; requires external buffer for >20 mA loads. | Select OPA2189IDR only if ultra-low drift dominates over output drive and capacitive load stability requirements. |
| AD8629ARZ | Zero-drift op-amp with 1 µV offset and 0.005 µV/°C drift; 10 MHz GBW; not specified for >1000 pF load stability. | Superior long-term stability for metrology, but lacks documented 1000 pF drive capability - risk of oscillation in unbuffered ADC interface designs. | Choose AD8629ARZ for lab-grade instruments where layout-controlled loads <100 pF are guaranteed; avoid in production systems with variable trace capacitance. |
Compared with OPA2189IDR and AD8629ARZ, the TLC4502AID trades marginal DC precision for guaranteed robustness in real-world industrial layouts - delivering proven 1000 pF drive, ±50 mA output, and deterministic 300 ms calibration, making it optimal for cost-sensitive, high-reliability embedded measurement systems.
Availability
TLC4502AID is available at Aetrix Electronics and suitable for industrial process transmitters, automotive pressure sensor modules, and portable weighing equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLC4502AID 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with leadership in precision signal chain solutions.
The TLC4502AID belongs to TI's Self-Cal™ precision op-amp product line, engineered specifically for high-accuracy, single-supply measurement systems where manual calibration is impractical and long-term drift must be minimized without chopper noise penalties.
FAQ
What is the maximum input offset voltage specification for the TLC4502AID over its full operating temperature range?
The TLC4502AID has a maximum input offset voltage of 40 µV across its full operating temperature range of –40°C to 125°C. This value is guaranteed after the internal self-calibration sequence completes within 300 ms of power-up. The specification is verified per the SLOS221B datasheet, Table 6, and applies specifically to the 'A' grade (TLC4502A) in the I-temp range (TLC4502AID). It is not derived from typical or room-temperature-only data.
Does the TLC4502AID require external components to perform its self-calibration function?
No, the TLC4502AID performs self-calibration autonomously using on-chip circuitry - no external capacitors, resistors, or control signals are needed. The calibration occurs automatically within 300 ms of power application, digitally trims the input offset, stores the correction in an internal SAR register, and then removes the calibration block from the signal path. This behavior is intrinsic to the TLC4502AID silicon design and is fully functional with only VDD+, VDD–/GND, and passive input/output connections.
Can the TLC4502AID drive a 1000 pF capacitive load while maintaining stability?
Yes, the TLC4502AID is explicitly characterized and guaranteed to remain stable when driving ≥1000 pF capacitive loads, as stated in the "Features" section and confirmed in the "Electrical Characteristics" table (SLOS221B, page 1). This capability eliminates the need for external series resistors or isolation networks when interfacing directly with ADC input capacitors, long PCB traces, or LCD column drivers - a key differentiator versus many general-purpose precision op-amps.
What is the supply voltage range supported by the TLC4502AID?
The TLC4502AID operates from a single supply of 4 V to 6 V, or dual supplies of ±2.5 V, as defined in the "Recommended Operating Conditions" table (SLOS221B, page 3). Operation outside this range - including 3.3 V or 12 V supplies - is not specified, and absolute maximum ratings (7 V) do not imply functional operation. The 4–6 V window ensures proper calibration circuit activation and rail-to-rail output performance across the full –40°C to 125°C temperature range.
How does the TLC4502AID differ from the standard TLC4502ID in terms of offset voltage performance?
The TLC4502AID is the 'A' grade variant, guaranteeing a maximum input offset voltage of 40 µV over –40°C to 125°C, whereas the TLC4502ID (non-A grade) specifies 100 µV max over the same temperature range. This 2.5× tighter offset spec makes the TLC4502AID suitable for applications demanding higher DC accuracy - such as 16-bit+ data acquisition - without requiring system-level software correction or hardware trimming. Both share identical pinout, package, and all other electrical characteristics.
TLC4502AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
TLC4502AID FAQ
1.How can I place an order for TLC4502AID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4502AID 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 TLC4502AID reliable?
The price and inventory of TLC4502AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4502AID is usually 5 days.
3.What payment methods are accepted for TLC4502AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4502AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4502AID?
TLC4502AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4502AID 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 TLC4502AID?
For technical support, including TLC4502AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4502AID requirements.
6.How does Aetrix verify that TLC4502AID is sourced from the original manufacturer or authorized distributors?
All TLC4502AID 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 TLC4502AID meets industry standards.
7.What is the process for return or replacement of TLC4502AID?
All TLC4502AID units undergo pre-shipment inspection (PSI). If there is an issue with TLC4502AID, 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 TLC4502AID part is unused and in its original packaging.
Return procedure for TLC4502AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC4502AID Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
