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16-Bit DACs with 32-Channel Sample-and-Hold Outputs

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Integrated 16-Bit DAC and 32-Channel SHA with SRAM and Sequencer
  • 32 Voltage Outputs
  • 0.005% Output Linearity
  • 200µV Output Resolution
  • Flexible Output Voltage Range
  • Remote Ground Sensing
  • Fast Sequential Loading: 1.3µs per Register
  • Burst and Immediate Mode Addressing
  • No External Components Required for Setting Gain and Offset
  • Integrated Output Clamp Diodes
  • Three Output Impedance Options:
    • MAX5631 (50Ω), MAX5632 (500Ω), and MAX5633 (1kΩ)

Applications/Uses

  • Automated Test Equipment (ATE)
  • Industrial Process Controls
  • Instrumentation
  • MEMS Mirror Servo Control

Description

The MAX5631/MAX5632/MAX5633 are 16-bit digital-to-analog converters (DACs) with 32 sample-and-hold (SHA) outputs for applications where a high number of programmable voltages are required. These devices include a clock oscillator and a sequencer that updates the DAC with codes from an internal SRAM. No external components are required to set offset and gain.

The MAX5631/MAX5632/MAX5633 feature a -4.5V to +9.2V output voltage range. Other features include a 200µV/step resolution, with output linearity error, typically 0.005% of full-scale range (FSR). The 100kHz refresh-rate updates each SHA every 320µs, resulting in negligible output droop. Remote ground sensing allows the outputs to be referenced to the local ground of a separate device.

These devices are controlled through a 20MHz SPI/QSPI™/MICROWIRE®-compatible 3-wire serial interface. Immediate Update Mode allows any channel's output to be updated within 20µs. Burst Mode allows multiple values to be loaded into memory in a single, high-speed data burst. All channels are updated within 330µs after data has been loaded.

Each device features an output clamp and output resistors for filtering. The MAX5631 features a 50Ω output impedance and is capable of driving up to 250pF of output capacitance. The MAX5632 features a 500Ω output impedance and is capable of driving up to 10nF of output capacitance. The MAX5633 features a 1kΩ output impedance and is capable of driving up to 10nF of output capacitance.

The MAX5631/MAX5632/MAX5633 are available in 12mm x 12mm, 64-pin TQFP, and 10mm x 10mm, 68-pin thin QFN packages.

Simplified Block Diagram

MAX5631, MAX5632, MAX5633: Functional Block Diagram MAX5631, MAX5632, MAX5633: Functional Block Diagram Zoom icon

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 .