DAC9881

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18-bit, single-channel, low-noise, voltage output DAC for high accuracy applications

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Product details

Parameters

Resolution (Bits) 18 DAC channels 1 Interface type SPI Output type Buffered Voltage Settling time (µs) 5 Features Reset to Mid-Scale, SDO Reference: type Ext Architecture R-2R Rating Catalog Output range (Max) (mA/V) 5.5 Output range (Min) (mA/V) 0 Operating temperature range (C) -40 to 105 open-in-new Find other Precision DACs (<=10MSPS)

Package | Pins | Size

VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other Precision DACs (<=10MSPS)

Features

  • 18-bit monotonic over temperature range
  • Relative accuracy: ±2 LSB maximum
  • Low-noise: 24 nV/√Hz
  • Fast settling: 5 µs
  • On-chip output buffer amplifier with rail-to-rail operation
  • Single power supply: 2.7 V to 5.5 V
  • DAC loading control
  • Selectable power-on reset to zero-scale or midscale
  • Power-down mode
  • Unipolar straight binary or
    two’s complement input mode
  • Fast SPI with Schmitt-triggered inputs: up to 50 MHz, 1.8-V, 3-V, and 5-V logic
  • Specified temperature range: –40°C to +105°C
  • Small package: VQFN-24, 4 mm × 4 mm

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

Description

The DAC9881 is an 18-bit, single-channel, voltage-output digital-to-analog converter (DAC). The device features 18-bit monotonicity, excellent linearity, very low-noise, and fast settling time. The on-chip precision output amplifier allows for a rail-to-rail output swing to be achieved over the full supply range of 2.7 V to 5.5 V.

The device supports a standard serial peripheral interface (SPI) capable of operating with input data clock frequencies of up to 50 MHz. The DAC9881 requires an external reference voltage to set the output range of the DAC channel. A programmable power-on reset circuit is also incorporated into the device to make sure that the DAC output powers up at zero-scale or midscale, and remains there until a valid write command.

Additionally, the DAC9881 has the capability to function in either unipolar straight binary or two’s complement mode. The DAC9881 provides low-power operation. To further save energy, power-down mode can be achieved by accessing the PDN pin, thereby reducing the current consumption to 25 µA at 5 V. Power consumption is 4 mW at 5 V, reducing to 125 µW in power-down mode.

open-in-new Find other Precision DACs (<=10MSPS)
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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 DAC9881 18-Bit, Single-Channel, Low-Noise, Voltage-Output Digital-to-Analog Converter datasheet (Rev. C) Nov. 14, 2019
Technical articles DAC Essentials: The resistor ladder May 29, 2013
User guides DAC9881EVM User's Guide (Rev. A) Oct. 12, 2009

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
899
Description

The AFE2256EVM is a compact USB based evaluation kit for evaluating the AFE2256 COF, a 256-channel analog front-end. The EVM is self-contained with DACs and power generation on-board which greatly reduces its dependency on external equipment. The kit consists of an EVM and two separate COF adapters (...)

Features
  • Allows quick evaluation of AFE2256 COF devices (externally detachable)
  • GUI software allows easy control of AFE2256 device modes and functions
  • On board 3.3V and 1.8V DUT power generation
  • On board FPGA based pattern generation and data acquisition
  • Communicates with Personal Computer through a USB 2.0 (...)
EVALUATION BOARDS Download
document-generic User guide
75
Description

The DAC9881EVM is a simple evaluation module designed for quick and easy evaluation of the functionality and performance of the 18-bit, voltage-output, single-channel serial input DAC9881. The DAC9881EVM is designed to work by default for unipolar output range, but it can also be configured for (...)

Features
  • Bipolar and Unipolar mode of operation is supported
  • An external +5V precision reference is included in a SO-8 package that is pin compatible with many different reference devices
  • Kelvin sense connection is implemented in the reference circuit
  • Test points included to allow users own external reference (...)
EVALUATION BOARDS Download
document-generic User guide
175
Description

The DAC9881EVM-PDK is a complete evaluation/demonstration kit, which combines an DAC9881EVM with the TMS32VC5509 based MMB0 motherboard for use with a personal computer. The MMB0 motherboard allows the DAC9881EVM to connect to a computer via a USB port. The DAC9881EVM-PDK is controlled by the DXP (...)

Features
  • Easy-to-use evaluation software for Microsoft™ Windows XP
  • Built-in wave tables for creating Sine, Square, Triangle and Saw tooth output waveforms
  • Amplitude and offset adjustment capabilities
  • Ability to provide straight DC output
  • Easily expandable with new analysis plug in tools from Texas Instruments

Software development

PROGRAMMING TOOLS 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
SUPPORT SOFTWARE Download
SBAC212.ZIP (192743 KB)

Design tools & simulation

SIMULATION MODELS Download
SBAM009.ZIP (61 KB) - IBIS Model
SIMULATION TOOLS 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 TOOLS 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 TOOLS 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
DAC Sample and Hold Glitch Reduction Reference Design
TIPD142 DAC R-2R architectures display great performance in regards to noise and accuracy, but at a cost of large glitch area. This design focuses on the reduction of major-carry glitches that occur from code specific transitions in DAC R-2R architectures. This design reduces this glitch area, making it (...)
document-generic Schematic document-generic User guide
Design files

CAD/CAE symbols

Package Pins Download
VQFN (RGE) 24 View options

Ordering & quality

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