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12-Bit, Low-Power, Quad, Voltage-Output DAC with Serial Interface

Product Details

Key Features

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 12
# Channels 4
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 16
Supply Range (V) (min) 2.7
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.42
Settling Time (µs) (typ) 4
Package/Pins UMAX/10
Oper. Temp. (°C) -40 to +85
-40 to +125
Budgetary
Price (See Notes)
10.32
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Simplified Block Diagram

Technical Docs

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Parameters

Parametric specs for Precision DACs (&lt; 1MHz)
Resolution (bits) 12
# Channels 4
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 16
Supply Range (V) (min) 2.7
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.42
Settling Time (µs) (typ) 4
Package/Pins UMAX/10
Oper. Temp. (°C) -40 to +85
-40 to +125
Budgetary
Price (See Notes)
10.32

Key Features

  • Ultra-Low Power Consumption
    • 229µA at VDD = +3.6V
    • 271µA at VDD = +5.5V
  • Wide +2.7V to +5.5V Single-Supply Range
  • 10-Pin µMAX Package
  • 0.3µA Power-Down Current
  • Guaranteed 12-Bit Monotonicity (±1 LSB DNL)
  • Safe Power-Up Reset to Zero Volts at DAC Output
  • Three Software-Selectable Power-Down Impedances (100kΩ, 1kΩ, Hi-Z)
  • Fast 20MHz 3-Wire SPI, QSPI, and MICROWIRE-Compatible Serial Interface
  • Rail-to-Rail Output Buffer Amplifiers
  • Schmitt-Triggered Logic Inputs for Direct Interfacing to Optocouplers
  • Wide -40°C to +125°C Operating Temperature Range

Applications/Uses

  • Automatic Tuning
  • Battery-Powered Instruments
  • Gain and Offset Adjustment
  • Power Amplifier Control
  • Process-Control I/O Boards
  • VCO Control

Description

The MAX5742 quad, 12-bit, low-power, buffered voltage-output, digital-to-analog converter (DAC) is packaged in a space-saving 10-pin µMAX® package (5mm x 3mm). The wide supply voltage range of +2.7V to +5.5V and 229µA supply current accommodates low-power and low-voltage applications. DAC outputs employ on-chip precision output amplifiers that swing rail-to-rail. The MAX5742's reference input accepts a voltage range from 0 to VDD. In power-down the reference input is high impedance, further reducing the system's total power consumption.

The 20MHz, 3-wire SPI™, QSPI™, MICROWIRE™ and DSP-compatible serial interface saves board space and reduces the complexity of opto- and transformer-isolated applications. The MAX5742 on-chip power-on reset (POR) circuit resets the DAC outputs to zero and loads the output with a 100kΩ resistor to ground. This provides additional safety for applications that drive valves or other transducers that need to be off on power-up. The MAX5742's software-controlled power-down reduces supply current to less than 0.3µA and provides software-selectable output loads (1kΩ, 100kΩ, or high impedance) while in power-down. The MAX5742 is specified over the -40°C to +125°C automotive temperature range.

Simplified Block Diagram

MAX5742: Functional Block Diagram MAX5742: 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 .

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.