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HomeProductsIntegrated Circuits (ICs)Specialized ICsTLC3548CPW
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TLC3548CPW - Texas Instruments

Manufacturer Part Number
TLC3548CPW
Manufacturer
Texas Instruments
Allelco Part Number
41D-TLC3548CPW
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,060 pcs available, New & Original
Parts Description
TSSOP-24
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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Our certification
In stock: 16060
  • Unit Price: $8.906
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $8.906 $8.91
200+ $3.447 $689.40
500+ $3.326 $1,663.00
1000+ $3.266 $3,266.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TLC3548CPW Tech Specifications
Texas Instruments - TLC3548CPW technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TLC3548CPW

Product Attribute Attribute Value
Part Number TLC3548CPW
Package TSSOP-24
Description TSSOP-24
Stock Condition Get 16060 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Texas Instruments
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Parts Introduction

Manufacturer Part Number

TLC3548CPW

Manufacturer

Texas Instruments

Introduction

The TLC3548CPW is a high-performance, low-power, 14-bit analog-to-digital converter (ADC) with four or eight pseudo-differential or single-ended inputs. It features a 200 kSPS sampling rate, internal and external reference, and an SPI interface for easy integration into a wide range of applications.

Product Features and Performance

14-bit resolution with up to 200 kSPS sampling rate

4 or 8 pseudo-differential or single-ended inputs

Internal and external reference options

SPI digital interface

Low power consumption

Product Advantages

High-performance ADC with excellent accuracy and linearity

Flexible input configurations to suit a variety of applications

Low power consumption for battery-powered devices

SPI interface for easy integration with microcontrollers and processors

Key Reasons to Choose This Product

Excellent performance and accuracy for critical analog signal processing

Versatile input options to accommodate different sensor and signal types

Low power consumption for extended battery life in portable applications

Easy integration with a wide range of digital systems via the SPI interface

Quality and Safety Features

Robust design and construction for reliable operation

Compliance with relevant safety and environmental standards

Compatibility

The TLC3548CPW is compatible with a wide range of microcontrollers, processors, and digital systems that support the SPI interface.

Application Areas

Industrial automation and control

Medical instrumentation

Test and measurement equipment

Consumer electronics

Portable and battery-powered devices

Product Lifecycle

The TLC3548CPW is currently in the Last Time Buy phase, meaning it is nearing discontinuation. However, there are equivalent or alternative models available from Texas Instruments, such as the TLC3548IPWR and the ADS7841. Customers are advised to contact our website's sales team for more information on available options and product lifecycle updates.

Frequently Asked Questions(FAQ)

How does the TLC3548CPW handle input channel selection and sampling in a 4-channel versus 8-channel configuration?
The TLC3548CPW integrates a multiplexer (MUX) that supports either 4 pseudo-differential or 8 single-ended inputs, configured via the serial interface. When operating in 4-channel mode, each channel pair is treated as a pseudo-differential input, improving noise rejection for low-level signals. In 8-channel mode, all inputs are single-ended, allowing broader sensor interfacing flexibility. The internal sample-and-hold (S/H) operates at a 1:1 ratio with the ADC core, meaning each conversion begins with a fresh acquisition phase. This architecture ensures consistent timing across channels but requires careful scheduling if simultaneous sampling is needed—external synchronization or post-processing alignment may be necessary for time-critical applications.
What are the implications of using an external reference with the TLC3548CPW in high-accuracy measurement systems?
The TLC3548CPW allows an external voltage reference, which is critical for achieving high absolute accuracy. While the internal reference provides convenience, its initial accuracy (±2.5 mV typical) and temperature drift (30 ppm/°C max) may limit precision in calibration-sensitive designs. An external reference such as the REF5025 (2.5 V, ±0.05% initial accuracy, 3 ppm/°C drift) significantly improves system-level performance, especially in temperature-varying environments. When using an external reference, ensure it remains stable during the entire conversion cycle—settling time and output impedance must be compatible with the ADC’s reference input current requirements to avoid code errors.
How does the TLC3548CPW’s 200 kSPS sampling rate translate into real-world multichannel throughput?
With a maximum sampling rate of 200 kSPS, the TLC3548CPW can achieve full throughput on a single channel. However, in multichannel applications, the effective per-channel rate decreases proportionally. For example, scanning all 8 single-ended channels sequentially yields approximately 25 kSPS per channel (200 kSPS ÷ 8). This assumes no additional delay between conversions. If channel settling time or software overhead is introduced—common when switching between high-impedance sensors—the usable rate may drop further. Designers should validate timing budgets using the device’s t_conv (conversion time ≈ 4.5 µs) and t_acq (acquisition time ≈ 0.5 µs) specifications under actual load conditions.
Can the TLC3548CPW operate reliably with a 3.3 V digital supply while maintaining 5 V analog performance?
Yes, the TLC3548CPW supports independent analog and digital supplies, enabling mixed-voltage operation. The analog section requires a 5 V supply to maintain full-scale input range (0 V to VREF), while the digital interface (SPI) operates from 2.7 V to 5.5 V, making it compatible with 3.3 V microcontrollers. This separation allows level-shifting-free communication without compromising analog signal integrity. However, ensure that the digital I/O timing meets VIH/VIL thresholds relative to the 3.3 V logic levels—SPI signals must remain within valid thresholds during all operating conditions, particularly at elevated temperatures where noise margins shrink.
How does the TLC3548CPW compare to the ADS7951SDBTR in terms of channel count, power, and interface flexibility?
The TLC3548CPW offers 4/8 configurable inputs and a 200 kSPS rate with SPI interface, while the ADS7951SDBTR provides 8 single-ended inputs at 1 MSPS with both SPI and parallel interfaces. The ADS7951SDBTR excels in speed and interface options but consumes more power (15 mW vs. ~8 mW for TLC3548CPW at full rate) and lacks pseudo-differential input support. The TLC3548CPW is better suited for low-to-mid speed, noise-sensitive applications where power efficiency and differential-like input performance are prioritized over raw throughput.
What layout considerations are critical when designing a PCB for the TLC3548CPW to minimize noise and ensure accurate conversions?
Proper grounding and signal routing are essential for the TLC3548CPW. Use a solid ground plane beneath the 24-TSSOP package and place decoupling capacitors (0.1 µF ceramic) as close as possible to the AVDD and DVDD pins. Separate analog and digital return paths, joining them at a single point near the power supply. Route analog input traces away from digital lines and clock signals to prevent coupling. The reference voltage input should be filtered with a low-ESR capacitor (1 µF in parallel with 0.1 µF) and kept short. Additionally, minimize loop areas in the input signal path to reduce susceptibility to electromagnetic interference, especially when measuring sub-10 mV signals.
Is the TLC3548CPW suitable for battery-powered industrial sensor nodes requiring long operational life?
The TLC3548CPW can be viable in battery-powered systems due to its low power consumption (~8 mW at 200 kSPS with 5 V analog supply) and wide digital supply range (2.7 V to 5.5 V). However, its lack of a dedicated power-down mode limits deep sleep functionality. For intermittent sampling applications, designers can leverage the SPI interface to halt conversions and reduce dynamic current, but quiescent current remains non-negligible. In contrast, devices with explicit shutdown modes may offer better energy efficiency for ultra-low-duty-cycle operation. Careful duty cycling and supply scaling (e.g., running at 3.3 V analog if signal range allows) can extend battery life in moderate-throughput scenarios.
How does the TLC3548CPW’s SAR architecture influence its performance in the presence of high-impedance sensor sources?
The successive approximation register (SAR) architecture of the TLC3548CPW requires the input signal to settle within 1/2 LSB during the acquisition phase. High-impedance sources (e.g., thermocouples with long leads or high-value resistive sensors) may not settle sufficiently within the 0.5 µs acquisition window, leading to conversion errors. To mitigate this, use a unity-gain buffer amplifier close to the ADC input or increase the acquisition time by reducing the sampling rate. Alternatively, adding a small hold capacitor (100 pF to 1 nF) at the input can improve settling but must be balanced against increased charge injection and potential signal distortion.
What are the thermal and long-term stability considerations when deploying the TLC3548CPW in industrial environments at the upper end of its operating range?
The TLC3548CPW is rated for 0°C to 70°C, which suits commercial and light industrial use but may not suffice for extended industrial temperature ranges. At 70°C, parameters such as offset voltage and gain error can drift beyond room-temperature specifications, affecting measurement consistency. While the device is not automotive-grade, its MSL 2 rating (1-year floor life) and RoHS3 compliance support reliable assembly in controlled environments. For applications near the thermal limit, thermal management—such as avoiding adjacent heat sources and ensuring adequate airflow—is recommended to prevent localized heating that could degrade performance or shorten lifespan.
How does the TLC3548CPW’s SPI timing interact with microcontroller peripherals, and what are common integration pitfalls?
The TLC3548CPW uses a standard 4-wire SPI interface with configurable clock polarity and phase (CPOL/CPHA). It supports clock rates up to 20 MHz, enabling fast data readout. A common issue arises from mismatched SPI modes between the host MCU and the ADC—incorrect CPOL/CPHA settings result in misaligned data bits. Additionally, the chip select (CS) signal must remain stable during the entire conversion and data transfer sequence. Some microcontrollers may inadvertently deassert CS too early, truncating the output word. Always verify timing using an oscilloscope, especially when daisy-chaining multiple devices or operating near maximum clock speeds.

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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Electrostatic Discharge Protection and Handling

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Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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Texas Instruments

TLC3548CPW

Texas Instruments
41D-TLC3548CPW

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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