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Texas Instruments TLC4501AIDR
- Part No.:
- TLC4501AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4501AIDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,082
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Product details
Overview
TLC4501AIDR from Texas Instruments is a self-calibrating precision CMOS rail-to-rail output operational amplifier optimized for single-supply, high-accuracy signal conditioning. It achieves 40 µV max input offset voltage (at 25°C), 1 µV/°C drift, 1 pA input bias current, 4.7 MHz gain-bandwidth product, and ±50 mA output drive-enabling use in portable digital scales and industrial sensor front-ends where offset stability over temperature is critical.
For engineers reviewing the TLC4501AIDR datasheet, TLC4501AIDR pinout, TLC4501AIDR application, or TLC4501AIDR equivalent, key selection considerations include its 300 ms self-calibration time, –40°C to 125°C operating range, D-package SOIC-8 footprint, and rail-to-rail output swing with stable 1000 pF capacitive load driving capability.
Technical Context
The TLC4501AIDR implements digital self-calibration via an integrated successive approximation register (SAR) that measures and stores input offset voltage within 300 ms of power-up, then removes calibration circuitry from the signal path. This architecture eliminates chopper noise and laser trimming while maintaining standard op-amp behavior 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), delivers 2.5 V/µs slew rate, and maintains 120 dB open-loop gain and 85 dB minimum CMRR across its full temperature range-making it suitable for precision DC-coupled amplification in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 40 µV max at 25°C - ensures ≤0.0008% error in 5 V full-scale measurement systems without external trimming. |
| Offset Drift | 1 µV/°C - guarantees <±0.1 mV total offset shift over –40°C to 125°C ambient, critical for unattended field instrumentation. |
| Input Bias Current | 1 pA typical - enables high-impedance sensor interfacing (e.g., pH electrodes, piezoresistive bridges) without significant loading error. |
| Gain-Bandwidth Product | 4.7 MHz - supports closed-loop gains up to ~47 at 100 kHz, sufficient for anti-aliasing and active filter stages in 16-bit DAQ. |
| Slew Rate | 2.5 V/µs - allows clean 100 kHz, 2 VPP sine wave reproduction with <0.1% THD+N at unity gain. |
| 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 routines finish, enabling deterministic startup timing. |
Pinout & Package
Package: SOIC-8 (D package), 3.9 mm × 4.9 mm body, 1.27 mm pitch, plastic body, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad; must remain floating or grounded per layout guidelines to avoid parasitic coupling. |
| 2 (IN–) | Inverting input | High-impedance node (10¹² Ω) accepting differential signals; referenced to GND/VDD– in single-supply configurations. |
| 3 (IN+) | Non-inverting input | High-impedance node (10¹² Ω); common-mode range extends to VDD– and VDD+ – 2.3 V for rail-to-rail operation. |
| 4 (VDD–/GND) | Negative supply / ground | Reference return for single-supply operation; connects to system GND when using 0 V to 5 V supply. |
| 5 (NC) | No internal connection | Unused pad; no routing or thermal relief required beyond standard SOIC-8 keepout. |
| 6 (VDD+) | Positive supply | Accepts 4 V to 6 V; internal regulation ensures stable biasing across supply variation and temperature. |
| 7 (OUT) | Amplifier output | Rail-to-rail capable (0.01 V to 4.99 V @ 5 V); drives ≥1 kΩ load with <0.1% gain error and stable phase margin into 1000 pF. |
| 8 (NC) | No internal connection | Unused pad; electrically isolated; no thermal or ESD function. |
Key Features
| Feature | Design Value |
|---|---|
| Digital self-calibration | Automatically trims input offset to ≤40 µV within 300 ms at power-on, then disconnects calibration circuitry to preserve signal integrity. |
| Rail-to-rail output | Swings within 10 mV of VDD– and 10 mV of VDD+, enabling full utilization of ADC input range in 5 V systems. |
| Stable capacitive load drive | Maintains ≥74° phase margin and no peaking with 1000 pF load, eliminating need for isolation resistors in sensor buffering. |
| Wide temperature range | Specified from –40°C to 125°C, supporting under-hood automotive and industrial control applications without derating. |
| Low input current noise | 0.6 fA/√Hz - minimizes Johnson-Nyquist noise contribution in high-source-impedance transducer interfaces. |
Applications
| Portable Digital Scales | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying mV-level outputs from strain-gauge load cells in battery-powered retail or medical weighing devices. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with auto-zeroing to eliminate thermal drift-induced zero-point drift. Use Value: Enables 20,000-count resolution without manual recalibration, extending battery life by eliminating continuous chopper clocking. |
Use Scenario: Conditioning thermocouple or RTD signals in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: First-stage gain and offset correction block before sigma-delta ADC, operating across –40°C to 70°C ambient. Use Value: Reduces system-level calibration frequency from quarterly to annual due to <±0.1 mV total offset drift over temperature. |
| Automotive Cabin Pressure Sensors | Medical Patient Monitor Front-Ends |
|
Use Scenario: Amplifying piezoresistive pressure transducer outputs in HVAC control units exposed to under-dash temperature extremes. IC Role / Device Role / Timing Role: Rail-to-rail output buffer driving 12-bit SAR ADC reference rails, surviving –40°C to 125°C junction temperature. Use Value: Eliminates cold-junction compensation errors caused by op-amp offset drift, improving barometric accuracy to ±0.1 kPa. |
Use Scenario: Low-noise amplification of ECG electrode signals in portable patient monitors requiring FDA Class II compliance. IC Role / Device Role / Timing Role: High-input-impedance, low-bias-current buffer isolating dry electrodes from downstream filtering and digitization. Use Value: Prevents baseline wander from input leakage (<1 pA), ensuring stable ST-segment analysis during multi-hour 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 |
|---|---|---|---|
| OPA333AIDR | Auto-zero architecture with 10 µV max VIO, 0.1 µV/°C drift, but only 350 kHz GBW and ±25 mA output drive. | Better DC precision but lower bandwidth; unsuitable for >100 kHz sensor excitation or fast-settling multiplexed DAQ. | Select OPA333AIDR only when ultra-low drift (<0.1 µV/°C) outweighs bandwidth and drive requirements. |
| ADA4522-1ARMZ | Zero-drift op-amp with 2.5 µV max VIO, 0.015 µV/°C drift, 2.7 MHz GBW, but requires dual supply and lacks rail-to-rail output. | Superior drift performance but incompatible with single-supply 0–5 V systems; needs level-shifting for ADC interface. | Choose ADA4522-1ARMZ only for dual-supply lab equipment where sub-µV drift dominates all other constraints. |
Compared with OPA333AIDR and ADA4522-1ARMZ, the TLC4501AIDR uniquely balances 40 µV offset, 4.7 MHz bandwidth, rail-to-rail output, and single-supply operation-making it the only option among the three qualified for automotive-grade, battery-powered, high-accuracy analog front-ends without design compromises.
Availability
TLC4501AIDR is available at Aetrix Electronics and suitable for portable digital scales, industrial PLC analog input modules, and automotive cabin pressure sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC4501AIDR 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 over 90 years of innovation in precision analog ICs.
The TLC4501AIDR belongs to TI's Self-Cal™ precision op-amp product line, designed specifically for applications demanding high DC accuracy, low drift, and robust operation in harsh thermal environments without external calibration hardware.
FAQ
What is the maximum input offset voltage specification for the TLC4501AIDR over its full operating temperature range?
The TLC4501AIDR has a maximum input offset voltage of 40 µV at 25°C, and this specification holds across its full operating range of –40°C to 125°C per the datasheet's "TLC4501A" row in the electrical characteristics tables. The device's self-calibration ensures this limit is maintained after initial 300 ms calibration, with drift capped at 1 µV/°C.
Does the TLC4501AIDR require external components to achieve rail-to-rail output operation?
No, the TLC4501AIDR achieves true rail-to-rail output swing (0.01 V above VDD– and 0.01 V below VDD+ at 5 V supply) without external components. Its output stage is internally optimized for low saturation voltage, and no pull-up/pull-down resistors or charge pumps are needed-unlike many legacy CMOS op-amps.
Can the TLC4501AIDR drive a 1000 pF capacitive load while maintaining stability?
Yes, the TLC4501AIDR is explicitly characterized for stable operation with 1000 pF capacitive loads, delivering ≥74° phase margin at unity gain with 1 kΩ series resistance. This eliminates the need for external isolation resistors in sensor buffering applications, simplifying PCB layout and reducing component count.
How does the self-calibration feature of the TLC4501AIDR affect system power-up timing?
The TLC4501AIDR performs full self-calibration within 300 ms of power application, after which it functions as a standard op-amp. System firmware should delay analog acquisition or ADC sampling until ≥300 ms after VDD stabilization to ensure calibrated offset performance-no additional control signals or timing overhead are required.
Is the TLC4501AIDR pin-compatible with other devices in the TLC450x family?
No, the TLC4501AIDR is not pin-compatible with TLC4502 variants (dual-channel) or TLC4501 non-A versions. It uses the SOIC-8 D package with two NC pins (1, 5, 8), whereas TLC4502 variants use different pinouts (e.g., dual outputs). Always verify pin mapping against the specific variant's datasheet diagram before board reuse.
TLC4501AIDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinEPIC™, Self-Cal™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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:
- 1mA
- 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
TLC4501AIDR FAQ
1.How can I place an order for TLC4501AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4501AIDR 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 TLC4501AIDR reliable?
The price and inventory of TLC4501AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4501AIDR is usually 5 days.
3.What payment methods are accepted for TLC4501AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4501AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4501AIDR?
TLC4501AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4501AIDR 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 TLC4501AIDR?
For technical support, including TLC4501AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4501AIDR requirements.
6.How does Aetrix verify that TLC4501AIDR is sourced from the original manufacturer or authorized distributors?
All TLC4501AIDR 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 TLC4501AIDR meets industry standards.
7.What is the process for return or replacement of TLC4501AIDR?
All TLC4501AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC4501AIDR, 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 TLC4501AIDR part is unused and in its original packaging.
Return procedure for TLC4501AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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