DAC8718

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Octal Low-Power 16-Bit +/-16.5V Output Serial Input Digital-to-Analog Converter

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Product details

Parameters

Resolution (Bits) 16 DAC channels 8 Interface type SPI Output type Buffered Voltage Settling time (µs) 15 Features SDO Reference: type Ext Architecture String Rating Catalog Output range (Max) (mA/V) 33 Output range (Min) (mA/V) -16.5 Operating temperature range (C) -40 to 105 open-in-new Find other Precision DACs (<=10MSPS)

Package | Pins | Size

TQFP (PAG) 64 144 mm² 12 x 12 VQFN (RGZ) 48 49 mm² 7 x 7 open-in-new Find other Precision DACs (<=10MSPS)

Features

  • Bipolar Output: ±2V to ±16.5V
  • Unipolar Output: 0V to +33V
  • 16-Bit Resolution
  • Low Power: 14.4mW/Ch (Bipolar Supply)
  • Relative Accuracy: 4 LSB Max
  • Low Zero/Full-Scale Error
    • Before User Calibration: ±10 LSB Max
    • After User Calibration: ±1 LSB
  • Flexible System Calibration
  • Low Glitch: 4nV-s
  • Settling Time: 15µs
  • Channel Monitor Output
  • Programmable Gain: x4/x6
  • Programmable Offset
  • SPI: Up to 50MHz, 1.8V/3V/5V Logic
  • Schmitt Trigger Inputs
  • Daisy-Chain with Sleep Mode Enhancement
  • Packages: QFN-48 (7x7mm), TQFP-64 (10x10mm)
  • APPLICATIONS
    • Automatic Test Equipment
    • PLC and Industrial Process Control
    • Communications
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Description

The DAC8718 is a low-power, octal, 16-bit digital-to-analog converter (DAC). With a 5V reference, the output can either be a bipolar ±15V voltage when operating from dual ±15.5V (or higher) power supplies, or a unipolar 0V to +30V voltage when operating from a +30.5V (or higher) power supply. With a 5.5V reference, the output can either be a bipolar ±16.5V voltage when operating from dual ±17V (or higher) power supplies, or a unipolar 0V to +33V voltage when operating from a +33.5V (or higher) power supply. This DAC provides low-power operation, good linearity, and low glitch over the specified temperature range of –40°C to +105°C. This device is trimmed in manufacturing and has very low zero-code and gain error. In addition, system level calibration can be performed to achieve ±1 LSB bipolar zero/full-scale error with bipolar supplies, or ±1 LSB zero code/full-scale error with a unipolar supply, over the entire signal chain. The output range can be offset by using the DAC offset register.

The DAC8718 features a standard, high-speed serial peripheral interface (SPI) that operates at up to 50MHz and is 1.8V, 3V, and 5V logic compatible, to communicate with a DSP or microprocessor. The input data of the device are double-buffered. An asynchronous load input (LDAC) transfers data from the DAC data register to the DAC latch. The asynchronous CLR input sets the output of all eight DACs to AGND. The VMON pin is a monitor output that connects to the individual analog outputs, the offset DAC, the reference buffer outputs, and two external inputs through a multiplexer (mux).

The DAC8718 is pin-to-pin and function-compatible with the DAC8218 (14-bit) and the DAC7718 (12-bit).

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet Octal, 16-bit, low-Power, High-Voltage Output, Serial Input D/A Converter datasheet (Rev. A) Dec. 15, 2009
Technical articles DAC Essentials: String theory May 01, 2013
User guide DAC8718EVM User's Guide (Rev. A) May 11, 2011

Design & development

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

Hardware development

EVALUATION BOARD Download
75
Description

The DACxx18EVM features the DAC7718, DAC8218, or DAC8718 digital to analog converter. The EVM provides a quick and easy way to evaluate the functionality and performance of this high resolution serial input Digital to Analog Converter (DAC). The DACxx18EVM is designed to work by default for a (...)

Features
  • Bipolar and Unipolar mode of operation is supported
  • Contains all support circuitry needed for the DACxx18 family
  • Serial interface header to easily attach to TI DSP base communication systems
  • Voltage reference options: onboard 5V, onboard 2.5V or external
  • Onboard jumpers to control DAC control pins
  • (...)

Software development

SOFTWARE PROGRAMMING TOOL Download
DXP DAC Exerciser Program
DXP DAC Exerciser Program (DXP)is a software tool from Texas Instruments for evaluating DACs without the requirements of expensive pattern generators or writing complex software. When used with a Texas Instruments DAC EVM and a modular motherboard, it allows for simple and easy digital signal generation (...)
Features
  • Modular design allows additional EVMs to be supported
  • Graphical user interface provides easy setup to send signals to a DAC

Design tools & simulation

SIMULATION MODEL Download
SBAM090.ZIP (82 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 (...)
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
TQFP (PAG) 64 View options
VQFN (RGZ) 48 View options

Ordering & quality

Information included:
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  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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