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Texas Instruments TLC4501ACDR
- Part No.:
- TLC4501ACDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4501ACDR.pdf
- Description:
- IC CMOS 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:22,113
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Product details
Overview
TLC4501ACDR from Texas Instruments is a self-calibrating precision CMOS rail-to-rail output operational amplifier with 40 µV maximum input offset voltage, 1 µV/°C offset drift, 1 pA input bias current, 4.7 MHz gain-bandwidth product, and ±50 mA output drive capability - optimized for high-accuracy single-supply signal conditioning in portable digital scales and industrial sensor interfaces.
For engineers reviewing the TLC4501ACDR datasheet, TLC4501ACDR pinout, TLC4501ACDR application, or TLC4501ACDR equivalent, key selection criteria include self-calibration timing (300 ms), rail-to-rail output swing under capacitive load (stable to 1000 pF), and operation across 0°C to 70°C with 4 V to 6 V supply - critical for low-drift analog front-ends in battery-powered measurement systems.
Technical Context
The TLC4501ACDR 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 to function as a standard op amp. This eliminates chopper noise and laser trimming while maintaining DC precision.
It operates from a single 4–6 V supply, delivers rail-to-rail output swing, achieves 120 dB open-loop gain and 85 dB minimum CMRR over temperature, and remains stable driving up to 1000 pF loads - enabling direct interface with ADC drivers and active filters without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 40 µV at 25°C - enables sub-0.01% error in 12-bit+ data acquisition without manual trimming |
| Offset Drift | 1 µV/°C - ensures <±100 µV total drift over 0°C to 70°C operating range |
| Gain-Bandwidth Product | 4.7 MHz - supports closed-loop gains up to ~100 at 47 kHz with phase margin >74° |
| Slew Rate | 2.5 V/µs - allows full-scale 5 V step response in <2.2 µs (0.01% settling) |
| Output Drive | ±50 mA - drives low-impedance loads (e.g., 100 Ω) directly without buffer stages |
| Supply Current | 1.5 mA typical - enables ultra-low-power operation in always-on sensor signal chains |
| Calibration Time | 300 ms - completes auto-zero before system initialization completes, no external trigger 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 grounded per layout best practice |
| 2 (IN–) | Inverting input | High-impedance CMOS node; 1 pA bias current enables high-Z sensor interfacing |
| 3 (IN+) | Non-inverting input | Matches IN– in offset and drift; supports precision differential sensing |
| 4 (VDD–/GND) | Negative supply / ground reference | Single-supply operation: tied to system GND; supports true 0 V input common-mode |
| 5 (OUT) | Amplifier output | Rail-to-rail swing (0 V to VDD); stable into 1000 pF - drives ADC inputs directly |
| 6 (NC) | No internal connection | Not bonded; avoid routing signals or vias to this pad |
| 7 (VDD+) | Positive supply | 4–6 V operation; PSRR ≥90 dB minimizes supply ripple coupling into signal path |
| 8 (NC) | No internal connection | Not bonded; electrically isolated from die |
Key Features
| Feature | Design Value |
|---|---|
| Self-Calibrating Offset | Digitally trims input offset to ≤40 µV within 300 ms at power-on; SAR storage eliminates ongoing calibration overhead |
| Rail-to-Rail Output | Swings within 10 mV of VDD and GND at 5 mA load - maximizes dynamic range in 3.3 V or 5 V systems |
| Capacitive Load Stability | Stable with up to 1000 pF output capacitance - eliminates need for isolation resistors when driving ADCs or cables |
| Ultra-Low Input Bias Current | 1 pA typical at 25°C - preserves signal integrity in high-impedance pH, thermopile, or piezoelectric sensor interfaces |
| Wide Temperature Range | Specified from 0°C to 70°C - validated performance for commercial and industrial control environments |
Applications
| Portable Digital Scales | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Weighing platforms using strain-gauge bridges with microvolt-level output signals requiring amplification before 24-bit sigma-delta ADC conversion. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with self-calibrated DC accuracy and low-noise gain staging. Use Value: 40 µV max offset and 1 µV/°C drift ensure <±0.02% full-scale error over temperature - eliminating factory calibration steps. |
Use Scenario: Analog signal conditioning for RTD, thermocouple, or pressure transducers in PLC I/O modules operating from 5 V rails. IC Role / Device Role / Timing Role: Rail-to-rail output buffer and gain stage driving multiplexed ADC inputs with minimal headroom loss. Use Value: ±50 mA drive and 1000 pF load stability allow direct connection to switched-capacitor ADCs without external buffers or compensation networks. |
| Data Acquisition Systems | Medical Instrumentation Front-Ends |
Use Scenario: Multi-channel benchtop DAQ units digitizing low-frequency sensor outputs (e.g., environmental monitoring) with 16+ bit resolution. IC Role / Device Role / Timing Role: Low-drift, low-noise gain block preceding programmable-gain amplifier and anti-alias filter stages. Use Value: 12 nV/√Hz input noise at 1 kHz and 0.02% THD+N at 10 kHz preserve signal fidelity for FFT-based spectral analysis. |
Use Scenario: Biopotential amplification (ECG, EMG) where DC-coupled, ultra-low-offset amplification is required before AC-coupled high-pass filtering. IC Role / Device Role / Timing Role: First-stage DC-coupled amplifier with self-calibration ensuring baseline stability during long-duration patient monitoring. Use Value: 300 ms automatic calibration at power-on establishes known DC operating point before patient connection - reducing setup time and artifact risk. |
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 (not self-calibrating); 10 µV max offset, 0.1 µV/°C drift, 350 µA supply current | Lower drift but higher quiescent current; no calibration time delay - better for continuous real-time systems | Select OPA333AIDR when sub-µV/°C drift dominates over power budget and calibration latency is unacceptable |
| LTC2050CS8#TRPBF | Zero-drift auto-zero op amp; 5 µV max offset, 0.015 µV/°C drift, 1.1 mA supply current, 3 V to 12 V supply | Superior drift spec but requires dual supply or level-shifting for single-supply rail-to-rail output | Select LTC2050CS8#TRPBF when ultimate DC stability is required and board space allows for external level-shifting or dual supply |
Compared with TLC4501ACDR, OPA333AIDR offers lower drift and zero calibration latency but consumes 2.3× more supply current; LTC2050CS8#TRPBF delivers 65× lower drift but lacks integrated rail-to-rail output and requires additional support circuitry - making TLC4501ACDR optimal for cost-sensitive, single-supply, medium-precision applications with defined power-on timing windows.
Availability
TLC4501ACDR is available at Aetrix Electronics and suitable for portable digital scales, industrial sensor interfaces, and data acquisition systems requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for TLC4501ACDR 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 over 90 years of innovation in precision analog design.
The TLC4501ACDR belongs to TI's Self-Cal™ precision op amp family, engineered specifically for applications demanding high DC accuracy without manual calibration or complex external circuitry in single-supply industrial and test equipment.
FAQ
What is the calibration mechanism used in the TLC4501ACDR?
The TLC4501ACDR uses integrated digital self-calibration circuitry that 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 TLC4501ACDR functions as a standard op amp thereafter with ≤40 µV offset.
Does the TLC4501ACDR support true rail-to-rail input common-mode range?
No - the TLC4501ACDR features rail-to-rail *output* swing but not rail-to-rail input. Its common-mode input voltage range extends from VDD– (GND) to VDD+ – 2.3 V. At VDD = 5 V, this means the input can operate from 0 V to 2.7 V. The TLC4501ACDR is optimized for unipolar single-supply applications where the input signal stays within this specified range.
Can the TLC4501ACDR drive a 1000 pF capacitive load without oscillation?
Yes - the TLC4501ACDR is explicitly characterized and guaranteed stable when driving up to 1000 pF capacitive loads, as confirmed in its datasheet (SLOS221B, Section 5). This eliminates the need for series isolation resistors when interfacing with sampling ADCs, long PCB traces, or coaxial cables - a key advantage over many general-purpose op amps.
What is the supply voltage range for the TLC4501ACDR?
The TLC4501ACDR operates from a single supply of 4 V to 6 V, as specified in the Recommended Operating Conditions table. Operation outside this range - including below 4 V or above 6 V - violates absolute maximum ratings and may cause permanent damage or parametric failure. The TLC4501ACDR is not rated for 3.3 V operation.
How does the TLC4501ACDR differ from the TLC4501CD variant?
The TLC4501ACDR and TLC4501CD share identical electrical specifications and SOIC-8 packaging, but differ in performance grading and temperature range: TLC4501ACDR is the 'A' grade (40 µV max offset, 0°C to 70°C), while TLC4501CD is the standard grade (80 µV max offset, same temperature range). Both use the same D package and pinout - the 'A' suffix denotes tighter initial offset tolerance.
TLC4501ACDR 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:
- 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
TLC4501ACDR FAQ
1.How can I place an order for TLC4501ACDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4501ACDR 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 TLC4501ACDR reliable?
The price and inventory of TLC4501ACDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4501ACDR is usually 5 days.
3.What payment methods are accepted for TLC4501ACDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4501ACDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4501ACDR?
TLC4501ACDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4501ACDR 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 TLC4501ACDR?
For technical support, including TLC4501ACDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4501ACDR requirements.
6.How does Aetrix verify that TLC4501ACDR is sourced from the original manufacturer or authorized distributors?
All TLC4501ACDR 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 TLC4501ACDR meets industry standards.
7.What is the process for return or replacement of TLC4501ACDR?
All TLC4501ACDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC4501ACDR, 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 TLC4501ACDR part is unused and in its original packaging.
Return procedure for TLC4501ACDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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