MAX5812:12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC

The MAX5812 is a single, 12-bit voltage-output, digital-to-analog converter (DAC) with an I²C-compatible 2-wire interface that operates at clock rates up to 400kHz. The device operates from a single 2.7V to 5.5V supply and draws only 100µA at VDD = 3.6V. A low-power power-down mode decreases current consumption to less than 1µA. The MAX5812 features three software-selectable power-down output impedances: 100kΩ, 1kΩ, and high impedance. Other features include an internal precision rail-to-rail output buffer and a power-on reset circuit that powers up the DAC in the 100kΩ power-down mode. The MAX5812 features a double-buffered I²C-compatible serial interface that allows multiple devices to share a single bus. All logic inputs are CMOS-logic compatible and buffered with Schmitt triggers, allowing direct interfacing to optocoupled and transformer-isolated interfaces. The MAX5812 minimizes digital noise feedthrough by disconnecting the clock (SCL) signal from the rest of the device when an address mismatch is detected. The MAX5812 is specified over the extended temperature range of -40°C to +85°C and is available in a space-saving 6-pin SOT23 package. Refer to the MAX5811 for the 10-bit version.

Key Features
  • Ultra-Low Supply Current
    • 100µA at VDD = 3.6V
    • 130µA at VDD= 5.5V
  • 300nA Low-Power Power-Down Mode
  • Single 2.7V to 5.5V Supply Voltage
  • Fast 400kHz I²C-Compatible 2-Wire Serial Interface
  • Schmitt-Trigger Inputs for Direct Interfacing to Optocouplers
  • Rail-to-Rail Output Buffer Amplifier
  • Three Software-Selectable Power-Down Output Impedances
    • 100kΩ, 1kΩ, and High Impedance
  • Read-Back Mode for Bus and Data Checking
  • Power-On Reset to Zero
  • Miniature 6-Pin SOT23 Package
MAX5812: Typical Operating Circuit
MAX5812: Typical Operating Circuit
Applications/Uses
  • Battery-Powered Applications
  • Digital Gain and Offset Control
  • Low-Cost Instrumentation
  • Programmable Attenuators
  • Programmable Voltage and Current Sources
  • VCO/Varactor Diode Control
DataSheet
titleDownload file
MAX5812 Data SheetMAX5812.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
MAX5812121Voltage- BufferedExt.16Serial - I2C2.75.50.194SOT/6-40 to +85$3.02 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5812LEUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX5812LEUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX5812LEUT-TNo Longer AvailableMAX5812LEUT+SOT,;6 pin;9 mm²-40°C to +85°CNo
MAX5812MEUT#TG16No Longer AvailableMAX5812MEUT+TSOT,;6 pin;9 mm²-40°C to +85°C
MAX5812MEUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX5812MEUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX5812MEUT-TNo Longer AvailableMAX5812MEUT+SOT,;6 pin;9 mm²-40°C to +85°CNo
MAX5812NEUTNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX5812NEUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX5812NEUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5812NEUT-TNo Longer AvailableMAX5812NEUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX5812PEUTNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX5812PEUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX5812PEUT-TNo Longer AvailableMAX5812PEUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
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