Product details


Resolution (Bits) 14 Number of input channels 4 Sample rate (Max) (kSPS) 200 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 5 Input range (Min) (V) 0 Features Oscillator Operating temperature range (C) -40 to 85, 0 to 70 Power consumption (Typ) (mW) 20 Analog voltage AVDD (Min) (V) 4.5 SNR (dB) 81 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 0.8 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.5 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

SOIC (DW) 20 132 mm² 12.8 x 10.3 TSSOP (PW) 20 42 mm² 6.5 x 6.4 open-in-new Find other Precision ADCs (<=10MSPS)


  • 14-Bit Resolution
  • Maximum Throughput 200 KSPS
  • Analog Input Range 0-V to Reference Voltage
  • Multiple Analog Inputs:
    • 8 Channels for TLC3548
    • 4 Channels for TLC3544
  • Pseudodifferential Analog Inputs
  • SPI/DSP-Compatible Serial Interfaces With SCLK up to 25 MHz
  • Single 5-V Analog Supply; 3-/5-V Digital Supply
  • Low Power:
    • 4 mA (Internal Reference: 1.8 mA) for Normal Operation
    • 20 µA in Autopower-Down
  • Built-In 4-V Reference, Conversion Clock and 8x FIFO
  • Hardware-Controlled and Programmable Sampling Period
  • Programmable Autochannel Sweep and Repeat
  • Hardware Default Configuration
  • INL: ±1 LSB Max
  • DNL: ±1 LSB Max
  • SINAD: 80.8 dB
  • THD: –95 dB

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The TLC3544 and TLC3548 are a family of 14-bit resolution high-performance, low-power, CMOS analog-to-digital converters (ADC). All devices operate from a single 5-V analog power supply and 3-V to 5-V digital supply. The serial interface consists of four digital inputs [chip select (CS\), frame sync (FS), serial input-output clock (SCLK), serial data input (SDI)], and a 3-state serial data output (SDO). CS\ (works as SS\, slave select), SDI, SDO, and SCLK form an SPI interface. FS, SDI, SDO, and SCLK form a DSP interface. The frame sync signal (FS) indicates the start of a serial data frame being transferred. When multiple converters connect to one serial port of a DSP, CS\ works as the chip select to allow the host DSP to access the individual converter. CS\ can be tied to ground if only one converter is used. FS must be tied to DVDD if it is not used (such as in an SPI interface). When SDI is tied to DVDD, the device is set in hardware default mode after power-on, and no software configuration is required. In the simplest case, only three wires (SDO, SCLK, and CS\ or FS) are needed to interface with the host.

In addition to being a high-speed ADC with versatile control capability, these devices have an on-chip analog multiplexer (MUX) that can select any analog input or one of three self-test voltages. The sample-and-hold function is automatically started after the fourth SCLK (normal sampling) or can be controlled by CSTART\ to extend the sampling period (extended sampling). The normal sampling period can also be programmed as short sampling (12 SCLKs) or long sampling (44 SCLKs) to accommodate the faster SCLK operation popular among high-performance signal processors. The TLC3544 and TLC3548 are designed to operate with low power consumption. The power saving feature is further enhanced with software power-down/ autopower-down modes and programmable conversion speeds. The conversion clock (internal OSC) is built in. The converter can also use an external SCLK as the conversion clock for maximum flexibility. The TLC3544 and TLC3548 have a 4-V internal reference. The converters are specified with unipolar input range of 0-V to 5-V when a 5-V external reference is used.

open-in-new Find other Precision ADCs (<=10MSPS)

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 4
Type Title Date
* Datasheet 5-V Analog, 3-/5-V Digital, 14-Bit, 200-KSPS, 4-/8-Channels Serial Analog-to-Dig datasheet (Rev. C) Apr. 10, 2003
Application notes Interfacing the TLC3544 or TLC3548 ADC to the MSP430F149 MCU (Rev. B) Sep. 24, 2018
White papers Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Application notes Determining Minimum Acquisition Times for SAR ADCs, part 2 Mar. 17, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Software development

DCPFREETOOL Software Plug-In to Code Composer Studio
DCPFREETOOL The data converter support plug-in is a free tool, which allows the user of Code Composer Studio™ to create initialization data and configuration software for Texas Instruments data converters based on inputs on a graphical user interface.

IMPORTANT: Please read the following before downloading the (...)


The data converter support plug-in (DCP) is a component of TI's Code Composer Studio™ and offers easy-to-use windows for the "point-and-click" configuration of TI's data converters from within the integrated development environment (IDE), preventing illegal combinations of settings. The DCP (...)

Design tools & simulation

SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
Analog engineer's calculator
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

CAD/CAE symbols

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TSSOP (PW) 20 View options

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