My Inquiry
My Account
Texas Instruments TLC4502QDR
- Part No.:
- TLC4502QDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4502QDR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,825
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC4502QDR 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 300 ms calibration, 4.7 MHz gain-bandwidth product, 2.5 V/µs slew rate, and ±50 mA output drive - enabling use in automotive-grade data acquisition and precision measurement systems.
For engineers reviewing the TLC4502QDR datasheet, TLC4502QDR pinout, TLC4502QDR application, or TLC4502QDR equivalent, key selection criteria include its Q-temp automotive qualification (–40°C to 125°C), self-calibration architecture eliminating chopper noise, rail-to-rail output swing, and stable operation driving ≥1000 pF loads without external compensation.
Technical Context
The TLC4502QDR integrates digital self-calibration circuitry that measures and stores input offset voltage in an on-chip successive approximation register (SAR) within 300 ms of power-up, then removes itself from the signal path. This architecture delivers stable DC precision without chopper-induced ripple or increased input current noise.
It operates from 4 V to 6 V supply, supports rail-to-rail output swing (within 100 mV of rails at ±50 mA), maintains 85 dB minimum CMRR and 90 dB kSVR over temperature, and remains stable with capacitive loads up to 1000 pF - eliminating need for isolation resistors in sensor interface or DAC output buffer applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 40 µV after calibration - enables sub-0.01% error in 12-bit+ systems without trimming |
| Offset Drift | 1 µV/°C - ensures <±10 µV drift over full –40°C to 125°C automotive range |
| Gain-Bandwidth Product | 4.7 MHz - supports closed-loop gains up to ~10 at 470 kHz with phase margin >74° |
| Slew Rate | 2.5 V/µs - allows 10 Vpp output at 400 kHz without distortion in unity-gain follower |
| 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 completes in most microcontroller boot sequences |
| Operating Temp Range | –40°C to 125°C - qualified per automotive Q-temp standards for under-hood and ADAS applications |
Pinout & Package
Package: SOIC-8 (D package), 150 mil width, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1IN– | Inverting input for Channel 1 - high-impedance CMOS node (10¹² Ω), sensitive to PCB leakage |
| 2 | 1IN+ | Non-inverting input for Channel 1 - referenced to GND/VDD–; used for precision sensor biasing |
| 3 | 1OUT | Output for Channel 1 - rail-to-rail swing, capable of sourcing/sinking ±50 mA |
| 4 | VDD–/GND | Ground reference for single-supply operation - must be low-impedance return path for both channels |
| 5 | 2IN+ | Non-inverting input for Channel 2 - electrically isolated from Channel 1 inputs; shares same substrate |
| 6 | 2IN– | Inverting input for Channel 2 - matched to Pin 1 for common-mode rejection in differential configurations |
| 7 | 2OUT | Output for Channel 2 - independent output stage; no crosstalk observed below –85 dB at 1 kHz |
| 8 | VDD+ | Positive supply rail - accepts 4 V to 6 V; bypass capacitor (0.1 µF) required at pin for stability |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibrating Offset | Digitally trims input offset to ≤40 µV within 300 ms, then disconnects calibration circuitry - eliminates chopper noise and 1/f drift |
| Rail-to-Rail Output | Swings within 100 mV of VDD+ and VDD– at ±50 mA load - preserves dynamic range in 3.3 V or 5 V systems |
| Capacitive Load Drive | Stable with ≥1000 pF loads - enables direct connection to ADC input caps or long cables without series resistor |
| Low Input Bias Current | 1 pA typical at 25°C - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiodes) |
| Automotive Qualification | Q-temp rated (–40°C to 125°C), AEC-Q100 stress-tested, and qualified for high-reliability automotive control modules |
Applications
| Automotive Sensor Signal Conditioning | Precision Weigh Scale Front-End |
|---|---|
Use Scenario: Amplifying low-level signals from RTD, thermocouple, or pressure sensors in engine control units. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with matched gain paths and offset cancellation. Use Value: 40 µV max offset and 1 µV/°C drift ensure <0.1°C measurement error over full automotive temperature range. | Use Scenario: Interfacing strain-gauge bridges in industrial and medical weighing platforms. IC Role / Device Role / Timing Role: Low-noise, low-drift difference amplifier with rail-to-rail output driving 24-bit sigma-delta ADC. Use Value: ±50 mA drive capability eliminates external buffer; 4.7 MHz GBW supports fast settling for high-throughput weigh cycles. |
| Portable Medical Instrumentation | Industrial Process Control Loop |
Use Scenario: Biopotential amplification (ECG, EMG) in battery-powered diagnostic devices. IC Role / Device Role / Timing Role: Single-supply, low-power analog front-end with calibrated DC accuracy and minimal EMI susceptibility. Use Value: Self-calibration avoids warm-up drift during critical patient measurements; 1 pA bias current prevents electrode polarization errors. | Use Scenario: 4–20 mA transmitter output stage and sensor excitation in PLC I/O modules. IC Role / Device Role / Timing Role: Precision voltage-to-current converter and loop-powered sensor conditioner. Use Value: Stable 1000 pF drive enables robust EMC performance; Q-temp rating ensures reliability in factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333QDGKR | Chopper-stabilized (not self-calibrating); 2 µV max offset; 350 kHz GBW; 17 µA supply current | Lower power, lower bandwidth - suited for ultra-low-power sensor nodes but not high-speed precision acquisition | Select when sub-1 µA quiescent current is mandatory and 350 kHz bandwidth suffices |
| ADA4522-2ARZ | Zero-drift architecture; 2.5 µV max offset; 3 MHz GBW; 1.2 mA supply current; no integrated calibration timing | Higher precision at DC, lower noise floor - better for nanovolt-level measurements but lacks auto-start calibration sequence | Select when ultimate DC stability and 11 nV/√Hz noise dominate over startup timing constraints |
Compared with OPA2333QDGKR and ADA4522-2ARZ, the TLC4502QDR uniquely combines guaranteed 40 µV offset after fixed 300 ms calibration, 4.7 MHz bandwidth, and automotive temperature range - making it optimal for time-constrained, high-accuracy analog signal chains where chopper artifacts must be avoided.
Availability
TLC4502QDR is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial process controllers, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC4502QDR 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC4502QDR belongs to TI's precision analog portfolio, specifically engineered for high-reliability automotive and industrial applications demanding self-calibrating DC accuracy, rail-to-rail output, and robust capacitive load drive without external compensation.
FAQ
What is the calibration mechanism used in the TLC4502QDR?
The TLC4502QDR uses an integrated self-calibration circuit that digitally measures input offset voltage during power-up, stores the correction value in an on-chip successive approximation register (SAR), and then disconnects the calibration logic from the signal path. This occurs automatically within 300 ms and requires no external control - the TLC4502QDR functions as a standard op-amp thereafter.
Does the TLC4502QDR require external components to achieve stability with capacitive loads?
No, the TLC4502QDR is internally compensated and remains stable driving capacitive loads up to 1000 pF without external isolation resistors or compensation networks. This is confirmed in the datasheet's "Stable Driving 1000 pF Capacitive Loads" specification and validated across –40°C to 125°C for the TLC4502QDR variant.
What is the maximum supply voltage for the TLC4502QDR?
The absolute maximum supply voltage for the TLC4502QDR is 7 V, but the recommended operating range is 4 V to 6 V. Operation outside 4–6 V may degrade offset calibration accuracy, slew rate, and output drive capability - all specifications for the TLC4502QDR are guaranteed only within this 4 V to 6 V window.
How does the TLC4502QDR differ from the standard TLC4502CD?
The TLC4502QDR is the Q-temp automotive-qualified version, specified for –40°C to 125°C operation and tested per AEC-Q100 requirements. The TLC4502CD is commercial-grade (0°C to 70°C) with identical electrical specs but no automotive qualification, traceability, or extended temperature validation - the TLC4502QDR is the only variant approved for under-hood or ADAS applications.
Can the TLC4502QDR be used in single-supply configurations with ground-referenced inputs?
Yes, the TLC4502QDR supports true single-supply operation with VDD–/GND tied to 0 V and VDD+ at 4–6 V. Its rail-to-rail output swings within 100 mV of ground and VDD+, and its input common-mode range extends to VDD– (0 V), allowing direct interfacing with ground-referenced sensors and microcontroller ADCs - a core design feature of the TLC4502QDR.
TLC4502QDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
TLC4502QDR FAQ
1.How can I place an order for TLC4502QDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4502QDR 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 TLC4502QDR reliable?
The price and inventory of TLC4502QDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4502QDR is usually 5 days.
3.What payment methods are accepted for TLC4502QDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4502QDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4502QDR?
TLC4502QDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4502QDR 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 TLC4502QDR?
For technical support, including TLC4502QDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4502QDR requirements.
6.How does Aetrix verify that TLC4502QDR is sourced from the original manufacturer or authorized distributors?
All TLC4502QDR 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 TLC4502QDR meets industry standards.
7.What is the process for return or replacement of TLC4502QDR?
All TLC4502QDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC4502QDR, 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 TLC4502QDR part is unused and in its original packaging.
Return procedure for TLC4502QDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC4502QDR 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…
