TLC2578

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Serial out, low power with built-in conversion clock & 8x FIFO, 8-channel, ±0.5 LSB INL

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Product details

Parameters

Resolution (Bits) 12 Number of input channels 8 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 Input range (Max) (V) 10 Input range (Min) (V) -10 Features Oscillator Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 29 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 72 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 1 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) 24 160 mm² 15.5 x 10.3 TSSOP (PW) 24 34 mm² 4.4 x 7.8 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 14-Bit Resolution for TLC3574/78, 12-Bit for TLC2574/2578
  • Maximum Throughput 200-KSPS
  • Multiple Analog Inputs:
    • 8 Single-Ended Channels for TLC3578/2578
    • 4 Single-Ended Channels for TLC3574/2574
  • Analog Input Range: ±10 V
  • Pseudodifferential Analog Inputs
  • SPI/DSP-Compatible Serial Interfaces With SCLK up to 25-MHz
  • Built-In Conversion Clock and 8x FIFO
  • Single 5-V Analog Supply; 3-/5-V Digital Supply
  • Low-Power
    • 5.8 mA in Normal Operation
    • 20 µA in Power Down
  • Programmable Autochannel Sweep and Repeat
  • Hardware-Controlled, Programmable Sampling Period
  • Hardware Default Configuration
  • INL: TLC3574/78: ±1 LSB;
            TLC2574/78: ±0.5 LSB
  • DNL: TLC3574/78: ±0.5 LSB;
              TLC2574/78: ±0.5 LSB
  • SINAD: TLC3574/78: 79 dB;
              TLC2574/78: 72 dB
  • THD: TLC3574/78: –82 dB;
              TLC2574/78: –82 dB

Note: Recommended Voltage Reference: REF02 and REF102

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Description

The TLC3574, TLC3578, TLC2574, and TLC2578 are a family of high-performance, low-power, CMOS analog-to-digital converters (ADC). TLC3574/78 is a 14-bit ADC; TLC2574/78 is a 12-bit ADC. All parts operate from single 5-V analog power supply and 3-V to 5-V digital supply. The serial interface consists of four digital input [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 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 a special pin, 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 TLC3574/78 and TLC2574/78 are designed to operate with low-power consumption. The power saving feature is further enhanced with autopower-down mode 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 TLC3574/78 and TLC2574/78 are specified with bipolar input and a full scale range of ±10 V.

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Technical documentation

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Type Title Date
* Data sheet 5-V Analog, 3-/5-V Digital, 14-/12-Bit, 200-KSPS, 4-/8-Channel Serial Analog-to- datasheet (Rev. C) May 29, 2003
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Application note 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

IDE, CONFIGURATION, COMPILER OR DEBUGGER Download
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 (...)

Features

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

SIMULATION MODEL Download
SLAM136.ZIP (53 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
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
CALCULATION TOOL Download
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 (...)
CALCULATION TOOL Download
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 (...)
Features
  • 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

Package Pins Download
SOIC (DW) 24 View options
TSSOP (PW) 24 View options

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