MAX5722:12-Bit, Low-Power, Dual, Voltage-Output DAC with Serial Interface

The MAX5722 dual,12-bit, low-power, buffered voltage-output, digital-to-analog converter (DAC) is packaged in a space-saving 8-pin µMAX® package (5mm x 3mm). The wide supply voltage range of +2.7V to +5.5V and 112µA supply current accommodates low-power and low-voltage applications. DAC outputs employ on-chip precision output amplifiers that swing rail-to-rail. The MAX5722'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 save board space and reduce the complexity of opto- and transformer-isolated applications. The MAX5722 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 MAX5722'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 MAX5722 is specified over the -40°C to +125°C automotive temperature range.

Key Features
  • Ultra-Low Power Consumption
    • 112µA at VDD = +3.6V
    • 135µA at VDD = +5.5V
  • Wide +2.7V to +5.5V Single-Supply Range
  • 8-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
MAX5722: Functional Block Diagram
MAX5722: Functional Block Diagram
Applications/Uses
  • Automatic Tuning
  • Battery-Powered Instruments
  • Gain and Offset Adjustment
  • Power Amplifier Control
  • Process-Control I/O Boards
  • VCO Control
DataSheet
titleDownload file
MAX5722 Data SheetMAX5722.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
MAX5722122Voltage- BufferedExt.16Serial - SPI2.75.50.2154µMAX/8-40 to +85
-40 to +125
$4.43 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5722AUANo Longer AvailableMAX5722AUA+µMAX,;8 pin;15.6 mm²-40°C to +125°CNo
MAX5722AUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX5722AUA+TActiveuMAX;8 pin-40°C to +125°CSee data sheet
MAX5722AUA-TNo Longer AvailableMAX5722AUA+TµMAX,;8 pin;15.6 mm²-40°C to +125°CNo
MAX5722EUANo Longer AvailableMAX5722EUA+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX5722EUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX5722EUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX5722EUA-TNo Longer AvailableMAX5722EUA+TµMAX,;8 pin;15.6 mm²-40°C to +85°CNo
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