MAX549A:+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

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.

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)
MAX548A, MAX549A, MAX550A: Functional Diagram
MAX548A, MAX549A, MAX550A: Functional Diagram
Applications/Uses
  • Battery-Powered Applications
  • Comparator-Level Settings
  • Digital Gain and Offset Control
  • GaAs Amp Bias Control
  • General Purpose
  • VCXO Control
DataSheet
titleDownload file
MAX548A-MAX550A Data SheetMAX548A-MAX550A.pdf
Parametrics
Part NumberResolution
(bits)
ChannelsOutput TypeReferenceINL
(±LSB)
InterfaceSupply Range
(V)
Supply Range
(V)
ICC
(mA)
Settling Time
(µs)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
maxminmaxmaxtypSee Notes
MAX548A82Voltage- UnbufferedExt.1Serial - SPI2.55.50.554µMAX/8
PDIP(N)/8
-40 to +85
0 to +70
$3.00 @1k
MAX549A2µMAX/8
PDIP(N)/8
$3.22 @1k
MAX550A1µMAX/8
PDIP(N)/8
$1.68 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX549AC/DNo Longer AvailableDICE SALES,;NA pin;DICE;0°C to +70°CSee data sheet
MAX549ACPANo Longer AvailableMAX549ACPA+PDIP(N),;8 pin;79.7 mm²0°C to +70°CNo
MAX549ACPA+ActivePDIP(N),;8 pin;79.7 mm²0°C to +70°CLead Free
MAX549ACUANo Longer AvailableMAX549ACUA+µMAX,;8 pin;15.6 mm²0°C to +70°CNo
MAX549ACUA+ActiveµMAX,;8 pin;15.6 mm²0°C to +70°CLead Free
MAX549ACUA+TActiveµMAX,;8 pin;15.6 mm²0°C to +70°CLead Free
MAX549ACUA-TNo Longer AvailableMAX549ACUA+TµMAX,;8 pin;15.6 mm²0°C to +70°CNo
MAX549AEPANo Longer AvailableMAX549AEPA+PDIP(N),;8 pin;79.7 mm²-40°C to +85°CNo
MAX549AEPA+ActivePDIP(N),;8 pin;79.7 mm²-40°C to +85°CLead Free
MAX549AEUANo Longer AvailableMAX549AEUA+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX549AEUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX549AEUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX549AEUA-TNo Longer AvailableMAX549AEUA+TµMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX548A-MAX550A.pdf MAX550A
MAX549A.pdf MAX549A
MAX548A-MAX550A.pdf MAX549A