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+2.5V to +5.5V, Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package

Dual, Serial, Voltage-Output DACs in a µMAX Package

Product Details

Key Features

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 8
# Channels 2
Interface Serial - SPI
Output Type Voltage- Unbuffered
Reference Ext.
INL (±LSB) (max) 1
Supply Range (V) (min) 2.5
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.55
Settling Time (µs) (typ) 4
Package/Pins PDIP/8
UMAX/8
Oper. Temp. (°C) -40 to +85
0 to +70
Budgetary
Price (See Notes)
3.58
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Simplified Block Diagram

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Parameters

Parametric specs for Precision DACs (&lt; 1MHz)
Resolution (bits) 8
# Channels 2
Interface Serial - SPI
Output Type Voltage- Unbuffered
Reference Ext.
INL (±LSB) (max) 1
Supply Range (V) (min) 2.5
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.55
Settling Time (µs) (typ) 4
Package/Pins PDIP/8
UMAX/8
Oper. Temp. (°C) -40 to +85
0 to +70
Budgetary
Price (See Notes)
3.58

Key Features

  • +2.5V to +5.5V Single-Supply Operation
  • ±1LSB (max) TUE
  • Power-On Reset Clears All Registers to Zero
  • Low Operating Current:
    • 150µA (MAX548A/MAX549A, VREF = +2.5V)
    • 75µA (MAX550A, VREF = +2.5V)
  • 1µA Shutdown Mode
  • 10MHz, 3-Wire Serial Interface Compatible with SPI/QSPI and Microwire
  • µMAX Package-50% Smaller than 8-Pin SO
  • Independent Shutdown of DACs (MAX548A/MAX549A)

Applications/Uses

  • Battery-Powered Applications
  • Comparator-Level Settings
  • Digital Gain and Offset Control
  • GaAs Amp Bias Control
  • General Purpose
  • VCXO Control

Description

The MAX548A/MAX549A/MAX550A serial, 8-bit voltage-output digital-to-analog converters (DACs) operate from a single +2.5V to +5.5V supply. Their ±1LSB TUE specification is guaranteed over temperature. Operating current (supply current plus reference current) is typically 75µA per DAC with VDD = 2.5V. In shutdown, the DAC is disconnected from the reference, reducing current drain to less than 1µA. The MAX548A/MAX549A allow each DAC to be shut down independently.

The 10MHz, 3-wire serial interface is compatible with SPI™/QSPI™ and Microwire™ interface standards. Double-buffered inputs provide flexibility when updating the DACs; the input and DAC registers can be updated individually or simultaneously.

The MAX548A is a dual DAC with an asynchronous load input; it uses VDD as the reference input. The MAX549A is a dual DAC with an external reference input. The MAX550A is a single DAC with an external reference input and an asynchronous load input.

The MAX548A/MAX549A/MAX550A's low power consumption and small µMAX® and DIP packages make these devices ideal for portable and battery-powered applications.

Simplified Block Diagram

MAX548A, MAX549A, MAX550A: Functional Diagram MAX548A, MAX549A, MAX550A: Functional 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 .