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DAC91001 ACTIVE 18-bit monotonic DAC with ultra-low noise, low glitch and exceptional THD Device with lower glitch ( 1 nV-s ), faster settling time ( 1us ), low noise and exceptional THD

Product details

Resolution (Bits) 18 Number of 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 Sample/update rate (Msps) 0.2 Power consumption (typ) (mW) 6 Operating temperature range (°C) -40 to 105
Resolution (Bits) 18 Number of 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 Sample/update rate (Msps) 0.2 Power consumption (typ) (mW) 6 Operating temperature range (°C) -40 to 105
VQFN (RGE) 24 16 mm² 4 x 4
  • 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
  • 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

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.

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.

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Technical documentation

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* Data sheet DAC9881 18-Bit, Single-Channel, Low-Noise, Voltage-Output Digital-to-Analog Converter datasheet (Rev. C) PDF | HTML 14 Nov 2019
EVM User's guide DAC9881EVM User's Guide (Rev. A) 12 Oct 2009

Design & development

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Evaluation board

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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 (...)

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Evaluation board

DAC9881EVM — DAC9881 Evaluation Module

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 (...)

User guide: PDF
Not available on TI.com
Evaluation board

DAC9881EVM-PDK — DAC9881 Performance Demonstration Kit

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 (...)

User guide: PDF
Not available on TI.com
Support software

DXP DXP EVM GUI

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 (...)

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Supported products & hardware

Supported products & hardware

Products
Precision DACs (≤10 MSPS)
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Hardware development
Evaluation board
DAC8411EVM-PDK DAC8411 Performance Demonstration Kit DAC8560EVM-PDK DAC8560 Performance Demonstration Kit DAC8811EVM-PDK DAC8811 Performance Demonstration Kit DAC8832EVM-PDK DAC8832 Performance Demonstration Kit DAC9881EVM-PDK DAC9881 Performance Demonstration Kit
Software
Software programming tool
DXP DXP DAC Exerciser Program
Simulation model

DAC9881 IBIS Model Version 1.0

SBAM009.ZIP (61 KB) - IBIS Model
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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 operational-amplifier (...)
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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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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Reference designs

TIPD142 — DAC Sample and Hold Glitch Reduction Reference Design

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 (...)
User guide: PDF
Schematic: PDF
Package Pins Download
VQFN (RGE) 24 View options

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