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Texas Instruments TLC4501AID
- Part No.:
- TLC4501AID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4501AID.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:183
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Product details
Overview
TLC4501AID from Texas Instruments is a self-calibrating precision CMOS rail-to-rail output operational amplifier optimized for single-supply, high-accuracy analog signal conditioning. It achieves 40 µV maximum 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 high-fidelity measurement in portable digital scales and industrial sensor front-ends.
For engineers reviewing the TLC4501AID datasheet, TLC4501AID pinout, TLC4501AID application, or TLC4501AID equivalent, key selection criteria include its guaranteed 40 µV VIO over –40°C to 125°C, 300 ms self-calibration time, rail-to-rail output swing, stability with 1000 pF capacitive loads, and compatibility with 4–6 V supply rails in precision data acquisition systems.
Technical Context
The TLC4501AID implements digital self-calibration using an integrated successive approximation register (SAR) to trim input offset voltage within 300 ms of power-up. After calibration, the circuitry disconnects from the signal path, eliminating noise and power overhead while preserving standard op-amp behavior.
It operates across –40°C to 125°C with rail-to-rail output swing (±50 mA drive), stable unity-gain performance into 1000 pF loads, and robust common-mode rejection (85 dB min) and supply-voltage rejection (90 dB min) - making it suitable for harsh-environment instrumentation where laser-trimmed or chopper-stabilized alternatives are cost-prohibitive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (VIO) | Max 40 µV at 25°C; ensures ≤0.0008% full-scale error in 5 V-range 16-bit ADC interfaces. |
| Offset Drift (αVIO) | 1 µV/°C; contributes only 120 µV max drift over full –40°C to 125°C range. |
| Input Bias Current (IIB) | 1 pA typical; enables low-leakage sensor interfacing (e.g., piezoresistive bridges, pH electrodes). |
| Gain-Bandwidth Product | 4.7 MHz; supports closed-loop gains up to 10× with >470 kHz bandwidth for fast settling. |
| Slew Rate | 2.5 V/µs; delivers 1.6 µs settling to 0.1% for 2 V step, critical for multiplexed data acquisition. |
| Output Drive | ±50 mA; drives 100 Ω loads directly without external buffers in active filter or DAC output stages. |
| Calibration Time | 300 ms; completes auto-zero before system initialization completes, no external timing control needed. |
Pinout & Package
Package: SOIC-8 (D package), 150 mil width, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pin; must be left floating or tied to GND per layout best practice. |
| 2 (1IN–) | Inverting input | Differential input node; high-impedance (1012 Ω) for precision feedback networks. |
| 3 (1IN+) | Non-inverting input | Differential input node; matched to Pin 2 for common-mode rejection optimization. |
| 4 (VDD–/GND) | Negative supply / ground reference | Single-supply operation: connects to system GND; dual-supply: connects to –2.5 V rail. |
| 5 (NC) | No internal connection | Unused pin; must be left floating or tied to GND. |
| 6 (VDD+) | Positive supply | Accepts 4–6 V; internal regulation ensures stable bias under supply ripple up to 200 mVPP. |
| 7 (1OUT) | Amplifier output | Rail-to-rail swing (0.01 V to VDD–0.3 V); drives 1 kΩ || 1000 pF loads without phase reversal. |
| 8 (NC) | No internal connection | Unused pin; must be left floating or tied to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibrating Offset Trim | Digitally stores calibrated offset in SAR register; eliminates need for external trimming or chopper modulation. |
| Rail-to-Rail Output | Swings within 10 mV of GND and within 300 mV of VDD+ at full load; maximizes dynamic range in 3.3 V/5 V systems. |
| Capacitive Load Stability | Stable with ≥1000 pF load; avoids external isolation resistors in ADC driver or cable-drive applications. |
| High Output Current | ±50 mA short-circuit capable; supports direct driving of LEDs, relays, or low-Z filters without discrete buffers. |
| Wide Temperature Range | Specified from –40°C to 125°C; qualified for automotive under-hood and industrial control cabinet use. |
Applications
| Portable Digital Scales | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Weighing platforms using strain-gauge bridges in battery-powered handheld devices. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and offset correction. Use Value: 40 µV VIO and 1 µV/°C drift enable <10 mg resolution over temperature without recalibration. |
Use Scenario: Analog front-end for pressure, temperature, or flow sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Rail-to-rail output buffer and anti-aliasing filter driver for 16-bit SAR ADCs. Use Value: ±50 mA drive and 1000 pF load stability eliminate external buffers, reducing BOM count and PCB area. |
| Data Acquisition Systems | Medical Instrumentation |
|
Use Scenario: Multiplexed multi-channel voltage/current measurement in benchtop DMMs and data loggers. IC Role / Device Role / Timing Role: High-speed, low-drift buffer between multiplexer and ADC sample-and-hold stage. Use Value: 2.5 V/µs slew rate and 1.6 µs 0.1% settling support >500 kSPS aggregate sampling rates. |
Use Scenario: ECG electrode amplification and lead-off detection in portable patient monitors. IC Role / Device Role / Timing Role: Low-noise, low-input-bias current amplifier for biopotential signal conditioning. Use Value: 1 pA IIB minimizes electrode polarization error; 12 nV/√Hz input noise preserves SNR in sub-µV signals. |
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 | Zero-drift (chopper) architecture; 10 µV max VIO, but higher 1/f noise and 0.3 µVPP switching artifacts. | Better initial offset, but unsuitable for low-noise AC-coupled biosignal paths due to chopper ripple. | Select when ultra-low VIO dominates over noise floor; avoid in ECG or audio front-ends. |
| LTC2050CS8#PBF | Zero-drift, 0.5 µV max VIO, 0.015 µV/°C drift, but limited 1.5 MHz GBW and ±10 mA output drive. | Superior DC precision, but insufficient bandwidth and drive for fast-settling data acquisition channels. | Select for ultra-stable DC references or integrators; not recommended for multiplexed ADC drivers. |
Compared with OPA333AIDR and LTC2050CS8#PBF, the TLC4501AID offers superior capacitive-load stability, higher output drive, and lower noise in the 10 Hz–1 kHz band - making it optimal for rail-to-rail buffered sensor interfaces where self-calibration suffices and chopper artifacts must be avoided.
Availability
TLC4501AID is available at Aetrix Electronics and suitable for portable digital scales, industrial sensor signal conditioning, and data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC4501AID 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 signal-chain solutions.
The TLC4501AID belongs to TI's Self-Cal™ precision op-amp family, designed specifically for high-accuracy, single-supply industrial and automotive measurement systems where laser trimming is cost-prohibitive and chopper noise is unacceptable.
FAQ
What is the operating temperature range for the TLC4501AID?
The TLC4501AID is rated for continuous operation from –40°C to +125°C. This extended range is validated per the datasheet's "TLC450xI" electrical characteristics tables and supports automotive under-hood and industrial control cabinet deployments where ambient temperatures exceed commercial-grade limits. The device maintains 40 µV max input offset voltage across this full range.
Does the TLC4501AID require external components to initiate self-calibration?
No, the TLC4501AID performs autonomous self-calibration at power-up without any external components or control signals. The 300 ms calibration sequence begins automatically upon VDD reaching valid level and completes before the amplifier enters normal operation. No external clock, resistor, or capacitor is required - the SAR register and calibration logic are fully integrated.
Can the TLC4501AID drive a 1000 pF capacitive load while maintaining stability?
Yes, the TLC4501AID is explicitly characterized and guaranteed stable with ≥1000 pF capacitive loads, as confirmed in the datasheet's "Stable Driving 1000 pF Capacitive Loads" feature list and Figure 28 (Phase Margin vs Load Capacitance). This eliminates the need for isolation resistors in ADC driver or coaxial cable interface applications.
What is the supply voltage range supported by the TLC4501AID?
The TLC4501AID operates from a single supply of 4 V to 6 V, or dual supplies of ±2.5 V. The recommended operating conditions table specifies VDD = 4–6 V for single-supply use, with input common-mode range extending from VDD– to VDD+ – 2.3 V. Operation outside this range risks exceeding absolute maximum ratings.
How does the TLC4501AID compare to standard precision op-amps in terms of input bias current?
The TLC4501AID delivers 1 pA typical input bias current - two orders of magnitude lower than most bipolar precision op-amps and competitive with premium CMOS types. This enables accurate interfacing with high-impedance sources such as pH electrodes, photodiode transimpedance nodes, and unbuffered potentiometric sensors without significant offset error contribution.
TLC4501AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinEPIC™, Self-Cal™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
TLC4501AID FAQ
1.How can I place an order for TLC4501AID through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4501AID 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 TLC4501AID reliable?
The price and inventory of TLC4501AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4501AID is usually 5 days.
3.What payment methods are accepted for TLC4501AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4501AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4501AID?
TLC4501AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4501AID 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 TLC4501AID?
For technical support, including TLC4501AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4501AID requirements.
6.How does Aetrix verify that TLC4501AID is sourced from the original manufacturer or authorized distributors?
All TLC4501AID 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 TLC4501AID meets industry standards.
7.What is the process for return or replacement of TLC4501AID?
All TLC4501AID units undergo pre-shipment inspection (PSI). If there is an issue with TLC4501AID, 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 TLC4501AID part is unused and in its original packaging.
Return procedure for TLC4501AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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