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18-Bit, High-Accuracy Voltage Output DAC with Digital Gain, Offset Control, and SPI Interface

Lowest Noise, Fast-Settling Precision 18-Bit DAC

Product Details

Key Features

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 18
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 2
Supply Range (V) (min) 2.7
Supply Range (V) (max) 5.5
ICC (mA) (max) 10
Settling Time (µs) (typ) 3
Package/Pins TSSOP/24
Oper. Temp. (°C) -40 to +105
Budgetary
Price (See Notes)
22.53
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Simplified Block Diagram

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Parameters

Parametric specs for Precision DACs (&lt; 1MHz)
Resolution (bits) 18
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 2
Supply Range (V) (min) 2.7
Supply Range (V) (max) 5.5
ICC (mA) (max) 10
Settling Time (µs) (typ) 3
Package/Pins TSSOP/24
Oper. Temp. (°C) -40 to +105
Budgetary
Price (See Notes)
22.53

Key Features

  • Ideal for ATE and High-Precision Instruments
    • INL Accuracy Guaranteed with ±2 LSB (max) Over Temperature
  • Fast Settling Time (3µs) with 10kΩ || 100pF Load
  • Safe Power-Up-Reset to Zero or Midscale DAC Output (Pin-Selectable)
    • Predetermined Output Device State in Power-Up and Reset in System Design
  • Negative Supply (AVSS) Option Allows Full INL and DNL Performance to 0V
  • SPI Interface Compatible with 1.8V to 5.5V Logic
  • High Integration Reduces Development Time and PCB Area
    • Buffered Voltage Output Directly Drives 2kΩ Load Rail-to-Rail
    • Integrated Reference Buffer
    • No External Amplifiers Required
  • Small 4.4mm × 7.8mm, 24-Pin TSSOP Package

Applications/Uses

  • Automatic Test Equipment
  • Automatic Tuning and Calibration
  • Communication Systems
  • Data-Acquisition Systems
  • Gain and Offset Adjustment
  • Medical Imaging
  • Process Control and Servo Loops
  • Programmable Voltage and Current Sources
  • Test and Measurement Equipment

Description

The MAX5318 is a high-accuracy, 18-bit, serial SPI input, buffered voltage output digital-to-analog converter (DAC) in a 4.4mm x 7.8mm, 24-lead TSSOP package. The device features ±2 LSB INL (max) accuracy and a ±1 LSB DNL (max) accuracy over the full temperature range of -40°C to +105°C.

The DAC voltage output is buffered resulting in a fast settling time of 3µs and a low offset and gain drift of ±0.5ppm/°C of FSR (typ). The force-sense output (OUT) maintains accuracy while driving loads with long lead lengths. Additionally, a separate AVSS supply, allows the output amplifier to go to 0V (GND) while maintaining full linearity performance.

The MAX5318 includes user-programmable digital gain and offset correction to enable easy system calibration.

At power-up, the device resets its outputs to zero or midscale. The wide 2.7V to 5.5V supply voltage range and integrated low-drift, low-noise reference buffer amplifier make for ease of use.

The MAX5318 features a 50MHz, 3-wire, SPI interface. The MAX5318 is available in a 24-lead TSSOP package and operates over the -40°C to +105°C temperature range.

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.