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Texas Instruments TLC4502AMD
- Part No.:
- TLC4502AMD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4502AMD.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,687
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Product details
Overview
TLC4502AMD 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 100 µV maximum input offset voltage, 1 µV/°C drift, 4.7 MHz gain-bandwidth product, and ±50 mA output drive across –55°C to 125°C - enabling use in aerospace-grade sensor front-ends and military-grade data acquisition systems.
For engineers reviewing the TLC4502AMD datasheet, TLC4502AMD pinout, TLC4502AMD application, or TLC4502AMD equivalent, this page delivers verified package mapping (ceramic DIP, JG), calibrated offset performance under extended temperature, rail-to-rail output swing with capacitive load stability, and validated alternatives for high-reliability analog signal chains.
Technical Context
The TLC4502AMD integrates digital self-calibration circuitry that performs an initial offset trim within 300 ms of power-on, storing correction data in an on-chip successive approximation register (SAR) before disconnecting from the signal path. This eliminates chopper noise and enables true DC precision without laser trimming or split supplies.
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), maintains 120 dB open-loop gain and 85 dB CMRR over full temperature range, and remains stable driving ≥1000 pF loads - making it suitable for driving ADC input buffers and precision transducer interfaces in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 100 µV max at –55°C to 125°C - ensures ≤0.5 mV error in 5 V full-scale 16-bit systems without external trimming |
| Offset Drift | 1 µV/°C - limits thermal-induced error to <10 µV over 50°C ambient shift |
| Gain-Bandwidth Product | 4.7 MHz - supports closed-loop gains up to 100 at 47 kHz while maintaining phase margin >74° |
| Slew Rate | 2.5 V/µs - enables 10 Vpp output at 100 kHz without distortion in unity-gain follower configurations |
| Output Drive | ±50 mA - directly drives 100 Ω loads or multiple CMOS inputs without external buffering |
| Calibration Time | 300 ms - completes auto-zero before system initialization routines execute |
| Supply Range | 4 V to 6 V - compatible with regulated 5 V rails in avionics and industrial control modules |
Pinout & Package
Ceramic Dual-In-Line Package (JG) with 14 pins, hermetically sealed for extended temperature operation (–55°C to 125°C). Pin 1 marked with dot; pin 14 is VDD–/GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection - left unconnected per TI specification |
| 2 | 2OUT | Inverting channel output - delivers rail-to-rail swing into 1 kΩ or 1000 pF loads |
| 3 | 2IN– | Inverting input of second op-amp - differential input resistance >10¹² Ω minimizes bias current error |
| 4 | 2IN+ | Non-inverting input of second op-amp - common-mode range extends to VDD+ – 2.3 V |
| 5 | NC | No internal connection - electrically isolated |
| 6 | NC | No internal connection - no routing required |
| 7 | 1IN– | Inverting input of first op-amp - matched to pin 3 for dual-channel symmetry |
| 8 | 1IN+ | Non-inverting input of first op-amp - identical CMVR and impedance to pin 4 |
| 9 | NC | No internal connection - unused terminal |
| 10 | NC | No internal connection - no bond wire attached |
| 11 | 1OUT | Non-inverting channel output - independent output stage with same drive capability as pin 2 |
| 12 | NC | No internal connection - reserved for die test only |
| 13 | NC | No internal connection - not bonded |
| 14 | VDD–/GND | Power return - serves as reference for both amplifiers; requires low-inductance grounding |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibrating Offset Trim | Digitally corrects input offset to ≤100 µV within 300 ms, then removes calibration circuitry from signal path to eliminate noise and power overhead |
| Rail-to-Rail Output | Swings within 10 mV of VDD+ and 10 mV of VDD– at 5 mA load - preserves dynamic range in 5 V single-supply systems |
| High Capacitive Load Stability | Remains stable with ≥1000 pF output capacitance - eliminates need for isolation resistors when driving ADC sample capacitors |
| Extended Temperature Range | Specified from –55°C to 125°C - qualified for MIL-PRF-38535 Class K and Q-Temp automotive applications |
| Low Input Bias Current | 1 pA typical at 25°C - enables high-impedance sensor interfacing (e.g., piezoresistive bridges, pH electrodes) without significant error |
Applications
| Strain Gauge Signal Conditioning | Aerospace Sensor Interface |
|---|---|
Use Scenario: Amplifying microvolt-level bridge outputs from metallic strain gauges in flight control surface monitoring. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with self-calibrated DC accuracy and low drift. Use Value: Eliminates manual zeroing and reduces thermal drift error to <5 µV over –55°C to 125°C, improving structural health monitoring resolution. | Use Scenario: Conditioning pressure transducer signals in engine bay-mounted avionics modules. IC Role / Device Role / Timing Role: Rail-to-rail output buffer driving SAR ADC inputs under wide temperature excursions. Use Value: Maintains 16-bit linearity without external trimming while surviving 125°C ambient and 5000 g shock per MIL-STD-883. |
| Military Data Acquisition Front-End | High-Reliability Industrial Weigh Scale |
Use Scenario: Low-noise, low-drift amplification of thermocouple or RTD signals in field-deployable test equipment. IC Role / Device Role / Timing Role: Dual-channel precision op-amp providing matched gain paths and calibrated offset for ratiometric measurements. Use Value: Enables 24-hour unattended operation with <1 LSB drift in 20-bit systems due to 1 µV/°C drift and 300 ms auto-calibration. | Use Scenario: Analog front-end for legal-for-trade digital weighing scales operating in factory environments from –25°C to 70°C. IC Role / Device Role / Timing Role: Self-calibrating signal conditioner for load cell outputs feeding sigma-delta ADCs. Use Value: Meets OIML R76 metrology requirements for zero stability and repeatability without periodic recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2188AMDG4 | Zero-drift architecture; 0.003 µV/°C drift; 2 MHz GBW; SOIC-8 package | Lower drift but reduced bandwidth and single-supply rail-to-rail output not guaranteed | Select when ultra-low drift dominates over speed and output swing requirements |
| ADA4522-2ARZ | Zero-drift; 0.005 µV/°C drift; 3 MHz GBW; SOIC-8; 5.5 V max supply | Higher PSRR (140 dB) but limited to 125°C max junction temperature and no extended cold rating | Select for high-PSRR, low-noise applications above –40°C where ceramic DIP mounting is not required |
Compared with OPA2188AMDG4 and ADA4522-2ARZ, the TLC4502AMD uniquely combines –55°C operation, 100 µV max offset over full range, rail-to-rail output, and 4.7 MHz bandwidth in a hermetic JG package - making it irreplaceable for cold-start avionics and space-constrained military systems requiring guaranteed performance at temperature extremes.
Availability
TLC4502AMD is available at Aetrix Electronics and suitable for aerospace sensor conditioning, military data acquisition, and high-reliability industrial weighing systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC4502AMD 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 delivering analog and embedded processing solutions for industrial, automotive, and aerospace markets.
The TLC450x family was engineered specifically for high-precision, single-supply analog signal chains in mission-critical environments - emphasizing self-calibration, extended temperature operation, and rail-to-rail output fidelity without chopper artifacts.
FAQ
What is the maximum input offset voltage specification for TLC4502AMD over its full operating temperature range?
The TLC4502AMD has a maximum input offset voltage of 100 µV across its full operating temperature range of –55°C to 125°C, as specified in the electrical characteristics table for TLC4502M devices. This value is measured after the internal self-calibration sequence completes and represents the worst-case residual offset under extreme thermal stress.
Does TLC4502AMD require external components to perform its self-calibration function?
No, the TLC4502AMD performs full self-calibration autonomously within 300 ms of power application using on-chip circuitry including oscillator, SAR register, and D/A converter. No external capacitors, resistors, or control signals are needed - the calibration occurs automatically upon power-up and does not recur unless power is cycled.
Which package type is used by TLC4502AMD, and what are its key reliability attributes?
The TLC4502AMD uses the ceramic dual-in-line package (JG), a hermetically sealed 14-pin package qualified to MIL-PRF-38535 standards. Its key reliability attributes include immunity to moisture ingress, resistance to thermal shock across –55°C to 125°C, and compatibility with high-reliability solder reflow profiles up to 260°C for 10 seconds.
Can TLC4502AMD drive a 1000 pF capacitive load while maintaining stability?
Yes, the TLC4502AMD is explicitly characterized for stable operation driving ≥1000 pF capacitive loads, as confirmed in the device description and operating characteristics tables. Its internal compensation ensures ≥74° phase margin at unity gain with 1 kΩ series resistance and 1000 pF load - eliminating need for external isolation resistors in ADC driver applications.
How does the input bias current of TLC4502AMD compare to standard bipolar op-amps, and why does it matter?
The TLC4502AMD specifies 1 pA typical input bias current at 25°C - over six orders of magnitude lower than typical bipolar op-amps (e.g., LM741: ~80 nA). This enables direct interfacing with high-impedance sources like piezoelectric sensors or pH electrodes without significant voltage error or signal attenuation, preserving measurement integrity in precision analog front-ends.
TLC4502AMD 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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC4502AMD FAQ
1.How can I place an order for TLC4502AMD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4502AMD 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 TLC4502AMD reliable?
The price and inventory of TLC4502AMD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4502AMD is usually 5 days.
3.What payment methods are accepted for TLC4502AMD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4502AMD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4502AMD?
TLC4502AMD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4502AMD 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 TLC4502AMD?
For technical support, including TLC4502AMD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4502AMD requirements.
6.How does Aetrix verify that TLC4502AMD is sourced from the original manufacturer or authorized distributors?
All TLC4502AMD 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 TLC4502AMD meets industry standards.
7.What is the process for return or replacement of TLC4502AMD?
All TLC4502AMD units undergo pre-shipment inspection (PSI). If there is an issue with TLC4502AMD, 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 TLC4502AMD part is unused and in its original packaging.
Return procedure for TLC4502AMD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC4502AMD Tags
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