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Texas Instruments TLC4501CD
- Part No.:
- TLC4501CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC4501CD.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,739
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Product details
Overview
TLC4501CD from Texas Instruments is a self-calibrating precision CMOS rail-to-rail output operational amplifier with 40 µV max input offset voltage, 4.7 MHz gain-bandwidth product, 2.5 V/µs slew rate, ±50 mA output drive, and 1 µV/°C offset drift - designed for high-accuracy single-supply signal conditioning in portable digital scales and industrial measurement equipment.
For engineers reviewing the TLC4501CD datasheet, TLC4501CD pinout, TLC4501CD application, or TLC4501CD equivalent, this page delivers verified specifications, calibrated performance context, package-confirmed terminal roles, and real-world application mappings - all grounded in TI's SLOS221B revision April 2001 production data.
Technical Context
The TLC4501CD integrates digital self-calibration circuitry that performs a one-time offset trim within 300 ms of power-on, storing correction in an internal successive approximation register (SAR) before dropping out of the signal path - enabling true rail-to-rail output swing (±50 mA) without chopper noise or laser trimming. It operates from 4 V to 6 V supply and is characterized over 0°C to 70°C.
Its architecture supports stable operation driving ≥1000 pF capacitive loads, features 120 dB open-loop gain, 90–100 dB CMRR, and 90–100 dB PSRR - making it suitable for precision DC-coupled amplification where long-term offset stability and low bias current (1 pA typical) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 40 µV max at 25°C - enables sub-0.1% error in 12-bit+ data acquisition systems without external trimming. |
| Offset Drift | 1 µV/°C - ensures <±10 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 4 Vpp output transitions in ≤1.6 µs (0.1% settling) for fast step-response applications. |
| Output Drive | ±50 mA - directly drives ADC reference buffers, LED drivers, or low-impedance transducer interfaces without external boost. |
| Input Bias Current | 1 pA typical - minimizes voltage error across high-impedance sensor sources (e.g., pH electrodes, piezoresistive bridges). |
| Supply Range | 4 V to 6 V - compatible with standard 5 V logic rails and battery-powered systems with minimal regulation overhead. |
Pinout & Package
Package: 8-pin SOIC (D package), body size 3.91 mm × 4.9 mm, 1.27 mm pitch, JEDEC MS-012AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused pad - must be left floating or tied to GND per layout best practice; no electrical function. |
| 2 (1IN–) | Inverting input | High-impedance node (10¹² Ω) accepting differential signals; sensitive to PCB leakage and EMI coupling. |
| 3 (1IN+) | Non-inverting input | Same impedance as IN–; used for unity-gain buffers or precision reference amplification. |
| 4 (VDD–/GND) | Negative supply / ground | Reference return for single-supply operation; requires low-impedance local decoupling (0.1 µF ceramic). |
| 5 (NC) | No internal connection | Unused pad - electrically isolated; no routing or thermal tie required. |
| 6 (VDD+) | Positive supply | Accepts 4–6 V; supplies calibration logic and analog core; bypassing critical for noise-sensitive apps. |
| 7 (OUT) | Amplifier output | Rail-to-rail capable (0.01 V to 4.99 V @ 5 V supply); drives capacitive loads up to 1000 pF stably. |
| 8 (NC) | No internal connection | Unused pad - no internal bond wire; leave unconnected per TI D-package pinout. |
Key Features
| Feature | Design Value |
|---|---|
| Digital self-calibration | Trims input offset to ≤40 µV within 300 ms at power-up, then removes calibration circuitry from signal path - eliminating chopper artifacts and power overhead. |
| Rail-to-rail output | Swings within 10 mV of VDD– and 10 mV of VDD+ at 5 mA load - maximizes dynamic range in single-supply 5 V systems. |
| Ultra-low input bias current | 1 pA typical - preserves signal integrity when interfacing with megaohm-range sensors (e.g., strain gauges, thermistors). |
| Stable capacitive drive | Guaranteed phase margin >74° with 100 pF load and 1 kΩ series resistance - eliminates need for isolation resistors in ADC driver stages. |
| Wide temperature characterization | Specified from 0°C to 70°C (Commercial grade) with validated parameters including CMRR, PSRR, and gain-bandwidth - reduces design margin uncertainty. |
Applications
| Portable Digital Scales | Industrial Process Transmitters |
|---|---|
Use Scenario: Amplifying microvolt-level bridge outputs from load cells in battery-powered handheld weighing devices. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with self-calibrated DC accuracy and rail-to-rail output driving 16-bit sigma-delta ADCs. Use Value: Eliminates manual calibration during manufacturing and maintains <±0.05% linearity over temperature without external trimming components. | Use Scenario: Conditioning 4–20 mA loop sensor signals in factory-floor pressure/temperature transmitters. IC Role / Device Role / Timing Role: Low-drift, low-bias current buffer and level-shifter converting sensor output to ADC input range under 5 V supply. Use Value: Enables direct interface to 3.3 V or 5 V microcontrollers with <1 µV/°C drift - reducing system calibration frequency and field maintenance cost. |
| Data Acquisition Front-Ends | Medical Instrumentation Signal Chains |
Use Scenario: High-resolution voltage amplification in benchtop multimeters and automated test equipment. IC Role / Device Role / Timing Role: DC-coupled gain stage preceding anti-aliasing filters and SAR ADCs, requiring stable offset and low noise. Use Value: Delivers 120 dB open-loop gain and 12 nV/√Hz input noise at 1 kHz - supporting 16-bit ENOB without additional noise filtering. | Use Scenario: Biopotential signal amplification (ECG, EEG) in portable diagnostic devices with strict power and accuracy constraints. IC Role / Device Role / Timing Role: First-stage amplifier in ultra-low-noise, high-input-impedance front-end with self-zeroing to suppress electrode DC offsets. Use Value: 1 pA input bias current prevents polarization errors on Ag/AgCl electrodes; 40 µV max offset avoids baseline wander in DC-coupled recordings. |
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; 350 kHz GBW; 16 V/V max gain at 10 kHz. | Lower bandwidth limits use in fast-settling DAQ; better for ultra-low-drift DC apps below 100 kHz. | Select OPA333AIDR when sub-10 µV offset and zero-drift over time are prioritized over speed and capacitive drive capability. |
| AD8628ARZ | Zero-drift auto-zero op-amp; 10 µV max offset; 2.5 MHz GBW; 100 pF max stable capacitive load. | Higher bandwidth than TLC4501CD but less robust with >1000 pF loads; requires external compensation for heavy capacitive loads. | Select AD8628ARZ when higher small-signal bandwidth and lower 1/f noise are needed, and load capacitance is ≤100 pF. |
Compared with OPA333AIDR and AD8628ARZ, the TLC4501CD uniquely combines 4.7 MHz bandwidth, ±50 mA drive, and guaranteed 1000 pF capacitive load stability - making it optimal for high-speed, high-fidelity single-supply amplification where calibration occurs once at startup rather than continuously.
Availability
TLC4501CD is available at Aetrix Electronics and suitable for portable digital scales, industrial process transmitters, and data acquisition front-ends requiring stable component supply, commercial-grade temperature performance, and long-lifecycle availability.
Supply support for TLC4501CD 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, embedded processing, and connectivity technologies with over 50 years of innovation in precision analog ICs.
The TLC4501CD belongs to TI's Self-Cal™ precision op-amp family, engineered for applications demanding high DC accuracy, rail-to-rail output, and single-supply operation - especially where manual calibration is impractical and chopper noise is unacceptable.
FAQ
What is the maximum input offset voltage specification for the TLC4501CD?
The TLC4501CD has a maximum input offset voltage of 40 µV at 25°C, as specified in the "Available Options" table of the SLOS221B datasheet. This value applies across the full commercial temperature range (0°C to 70°C) and is achieved via its integrated self-calibration circuitry during initial power-up.
Does the TLC4501CD require external components to perform self-calibration?
No, the TLC4501CD performs self-calibration autonomously within 300 ms of power application using internal circuitry - including oscillator, SAR register, and D/A converter - with no external pins, timing signals, or components required. The calibration result is stored digitally and the circuit exits the signal path.
Can the TLC4501CD drive a 1000 pF capacitive load without oscillation?
Yes, the TLC4501CD is explicitly characterized and guaranteed to remain stable when driving ≥1000 pF capacitive loads, as stated in the "Key Specifications" section of the SLOS221B datasheet. Its phase margin exceeds 74° under these conditions with 1 kΩ series resistance.
What is the supply voltage range supported by the TLC4501CD?
The TLC4501CD operates from a single supply of 4 V to 6 V, as defined in the "Recommended Operating Conditions" table of the SLOS221B datasheet. It is not rated for dual-supply operation beyond ±2.5 V, and operation outside this range may cause permanent damage.
Is the TLC4501CD pin-compatible with other devices in the TLC450x family?
The TLC4501CD uses the same 8-pin SOIC (D) package and pinout as TLC4501ACD, TLC4501ID, and TLC4501AID - all share identical NC/IN–/IN+/GND/NC/VDD+/OUT/NC mapping. However, it is not pin-compatible with dual-channel TLC4502 variants, which use different pin assignments for second channel terminals.
TLC4501CD 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:
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC4501CD FAQ
1.How can I place an order for TLC4501CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC4501CD 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 TLC4501CD reliable?
The price and inventory of TLC4501CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC4501CD is usually 5 days.
3.What payment methods are accepted for TLC4501CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC4501CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC4501CD?
TLC4501CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC4501CD 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 TLC4501CD?
For technical support, including TLC4501CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC4501CD requirements.
6.How does Aetrix verify that TLC4501CD is sourced from the original manufacturer or authorized distributors?
All TLC4501CD 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 TLC4501CD meets industry standards.
7.What is the process for return or replacement of TLC4501CD?
All TLC4501CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC4501CD, 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 TLC4501CD part is unused and in its original packaging.
Return procedure for TLC4501CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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