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Texas Instruments TLC4501ACD
- Part No.:
- TLC4501ACD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4501ACD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,269
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Product details
Overview
TLC4501ACD from Texas Instruments is a self-calibrating precision CMOS rail-to-rail output operational amplifier with 40 µV maximum input offset voltage, 4.7 MHz gain-bandwidth product, 2.5 V/µs slew rate, ±50 mA output drive, and operation over 0°C to 70°C. It delivers high-accuracy signal conditioning in single-supply data acquisition systems and portable digital scales.
For engineers reviewing the TLC4501ACD datasheet, TLC4501ACD pinout, TLC4501ACD application, or TLC4501ACD equivalent, this device offers verified self-calibration circuitry, rail-to-rail output swing, stable 1000 pF capacitive load driving, low 1 µV/°C offset drift, and precise 1 pA input bias current-critical for low-drift, low-noise analog front-ends.
Technical Context
The TLC4501ACD integrates a digital self-calibration engine that performs one-time offset trimming within 300 ms of power-up, storing correction data in an on-chip successive approximation register (SAR). After calibration, the circuitry disconnects from the signal path, enabling standard op-amp behavior with no ongoing power penalty or noise injection.
It operates from a single 4–6 V supply (or ±2.5 V dual supply), supports rail-to-rail output swing (0.01 V to 4.99 V at 5 V supply), and maintains stability driving ≥1000 pF loads without external compensation-enabling direct interface with ADC inputs, capacitive sensors, and long traces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max 40 µV at 25°C - enables sub-16-bit accuracy in 12-bit+ data acquisition without external trimming |
| Offset Drift | 1 µV/°C - ensures <100 µV total drift across 0°C to 70°C operating range |
| 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 - allows full-scale 5 V step response in ≤2 µs, suitable for fast-settling sensor interfaces |
| Output Drive | ±50 mA - drives low-impedance loads (e.g., 100 Ω) directly, eliminating buffer stages |
| Input Bias Current | 1 pA typical - minimizes voltage error in high-Z source applications (e.g., pH electrodes, photodiode transimpedance) |
| Calibration Time | 300 ms - completes auto-zero before system initialization completes; no user intervention required |
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 | Not bonded; must be left floating or tied to GND per layout best practice |
| 2 (1IN–) | Inverting input | Differential input node; high-impedance (10¹² Ω) CMOS input for precision feedback networks |
| 3 (1IN+) | Non-inverting input | Differential input node; common-mode range extends to rails (VDD– to VDD+ – 2.3 V) |
| 4 (VDD–/GND) | Negative supply / ground | Reference for single-supply operation; connects to system GND when using 0–5 V supply |
| 5 (NC) | No internal connection | Not bonded; must be left floating or tied to GND |
| 6 (VDD+) | Positive supply | Accepts 4–6 V single supply or +2.5 V in dual-supply configuration |
| 7 (1OUT) | Amplifier output | Rail-to-rail capable (0.01 V to 4.99 V @ 5 V); drives ≥1000 pF directly |
| 8 (NC) | No internal connection | Not bonded; must be left floating or tied to GND |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibrating Offset Trim | Digitally stores correction in SAR register; eliminates need for laser trimming or chopper stabilization |
| Rail-to-Rail Output | Swings within 10 mV of each rail at 5 V supply - maximizes dynamic range in low-voltage systems |
| Capacitive Load Stability | Stable with ≥1000 pF load - avoids external isolation resistors in ADC driver or filter applications |
| Low Input Bias Current | 1 pA typical - preserves signal integrity in ultra-high-impedance sensor interfaces |
| Wide Temperature Range | Specified from 0°C to 70°C - validated for commercial industrial control and test equipment |
Applications
| Data Acquisition Systems | Portable Digital Scales |
|---|---|
Use Scenario: High-resolution analog front-end for 16-bit SAR ADCs measuring thermocouples, strain gauges, or RTDs. IC Role / Device Role / Timing Role: Precision instrumentation amplifier stage with calibrated offset and rail-to-rail output matching ADC input range. Use Value: 40 µV max offset and 1 µV/°C drift ensure <0.01% measurement error across temperature without recalibration. | Use Scenario: Signal conditioning for microvolt-level bridge outputs in handheld weighing devices. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage preceding sigma-delta ADC; powered from single 5 V battery rail. Use Value: 1 pA input bias prevents loading of high-Z Wheatstone bridges; rail-to-rail output fully utilizes ADC reference. |
| Industrial Process Monitoring | Battery-Powered Test Equipment |
Use Scenario: Analog signal conditioning in PLC I/O modules converting 4–20 mA loop signals to digital. IC Role / Device Role / Timing Role: Precision current-to-voltage converter and level-shifting amplifier with wide common-mode range. Use Value: 4.7 MHz GBW and 2.5 V/µs slew rate support fast loop response; ±50 mA drive handles active output stages. | Use Scenario: Front-end amplifier in handheld multimeters or portable oscilloscope probes. IC Role / Device Role / Timing Role: Low-power, high-accuracy buffer and gain stage operating from coin-cell or Li-ion sources. Use Value: 1.5 mA typical supply current at 5 V enables >100 hr battery life; self-calibration removes warm-up drift. |
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 offset, 0.02 µV/°C drift; higher 1/f noise; 360 µA supply current | Superior long-term drift stability but higher noise floor; not suitable for low-noise AC-coupled sensor paths | Select OPA333AIDR only when ultra-low drift (<0.1 µV/°C) outweighs noise sensitivity and self-cal timing constraints |
| LTC2050CS8#TRPBF | Zero-drift design; 5 µV max offset, 0.015 µV/°C drift; 1.1 mA supply current; requires external VOS trim pin for optimal performance | Higher quiescent current and external component dependency; better for DC-critical, low-frequency applications | Choose LTC2050CS8#TRPBF when absolute DC precision dominates power and layout simplicity requirements |
Compared with OPA333AIDR and LTC2050CS8#TRPBF, the TLC4501ACD provides deterministic 300 ms calibration startup, lower noise (12 nV/√Hz at 1 kHz), and no switching artifacts-making it preferred for medium-speed, low-noise, single-event calibrated systems where chopper ripple is unacceptable.
Availability
TLC4501ACD is available at Aetrix Electronics and suitable for data acquisition systems, portable digital scales, and industrial process monitoring requiring stable component supply, consistent parametric performance, and long-term sourcing continuity.
Supply support for TLC4501ACD 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, embedded processing, and connectivity solutions with emphasis on reliability, precision, and energy efficiency.
The TLC4501ACD belongs to TI's Self-Cal™ precision op-amp family, designed specifically for high-accuracy, single-supply industrial and test equipment where traditional trimming methods add cost and complexity.
FAQ
What is the calibration time for TLC4501ACD and how does it affect system startup?
The TLC4501ACD completes its self-calibration sequence in 300 ms after power is applied. During this period, the output may be unstable; designers must delay signal acquisition until calibration finishes. The TLC4501ACD stores offset correction in nonvolatile SAR logic, so re-calibration occurs only on power-up-not during brownout or sleep mode wake-up.
Does TLC4501ACD require external components to achieve rail-to-rail output operation?
No, the TLC4501ACD achieves true rail-to-rail output swing (within 10 mV of each rail at 5 V supply) without external components. Its CMOS output stage is internally optimized for low saturation voltage, and stability is maintained up to 1000 pF capacitive load-eliminating the need for isolation resistors or external compensation networks in most applications.
What is the maximum capacitive load the TLC4501ACD can drive while remaining stable?
The TLC4501ACD is characterized for stable operation with ≥1000 pF capacitive loads under unity-gain conditions. This is confirmed by phase margin >74° at 100 kHz with 1 kΩ load and 100 pF capacitance. For loads exceeding 1000 pF, a small series resistor (10–50 Ω) between output and capacitance restores stability without degrading bandwidth significantly.
How does the input offset voltage specification of TLC4501ACD compare to the base TLC4501 variant?
The TLC4501ACD guarantees a maximum input offset voltage of 40 µV at 25°C, whereas the standard TLC4501CD is specified at 80 µV max. This tighter grade reflects enhanced factory screening and binning-making the 'A' suffix critical for applications demanding higher initial accuracy without post-manufacture calibration.
Can TLC4501ACD operate from a single 3.3 V supply?
No-the TLC4501ACD has a minimum recommended supply voltage of 4 V per the datasheet's "Recommended Operating Conditions." At 3.3 V, key parameters including output swing, slew rate, and open-loop gain degrade outside specification; operation below 4 V is not characterized or guaranteed. Use TI's OPA333 or similar 1.8–5.5 V rail-to-rail op-amps for 3.3 V systems.
TLC4501ACD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinEPIC™, Self-Cal™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC4501ACD FAQ
1.How can I place an order for TLC4501ACD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4501ACD 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 TLC4501ACD reliable?
The price and inventory of TLC4501ACD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4501ACD is usually 5 days.
3.What payment methods are accepted for TLC4501ACD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4501ACD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4501ACD?
TLC4501ACD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4501ACD 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 TLC4501ACD?
For technical support, including TLC4501ACD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4501ACD requirements.
6.How does Aetrix verify that TLC4501ACD is sourced from the original manufacturer or authorized distributors?
All TLC4501ACD 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 TLC4501ACD meets industry standards.
7.What is the process for return or replacement of TLC4501ACD?
All TLC4501ACD units undergo pre-shipment inspection (PSI). If there is an issue with TLC4501ACD, 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 TLC4501ACD part is unused and in its original packaging.
Return procedure for TLC4501ACD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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