MAX5820:Dual, 8-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC

Dual, 8-Bit, Low-Power, 2-Wire, Serial-Voltage-Output DAC with an I²C-Compatible, 2-Wire Interface that Operates at Clock Rates Up to 400kHz

The MAX5820 is a dual, 8-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 (115µA at VDD = 3.6V). A power-down mode decreases current consumption to less than 1µA. The MAX5820 features three software-selectable power-down output impedances: 100kΩ, 1kΩ, and high impedance. Other features include internal precision rail-to-rail output buffers and a power-on reset (POR) circuit that powers up the DAC in the 100kΩ power-down mode. The MAX5820 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 MAX5820 minimizes digital noise feedthrough by disconnecting the clock (SCL) signal from the rest of the device when an address mismatch is detected. The MAX5820 is specified over the extended (-40°C to +85°C) temperature range and is available in a small 8-pin µMAX® package. Refer to the MAX5822 data sheet for the 12-bit version and to the MAX5821 data sheet for a 10-bit version.

Key Features
  • Ultra-Low Supply Current
    • 115µA at VDD = 3.6V
    • 135µA 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 Amplifiers
  • Three Software-Selectable Power-Down Output Impedances
    • 100kΩ, 1kΩ, and High Impedance
  • Readback Mode for Bus and Data Checking
  • Power-On Reset to Zero
  • 8-Pin µMAX Package
MAX5820: Typical Operating Circuit
MAX5820: Typical Operating Circuit
Applications/Uses
  • Battery-Operated Instrumentation
  • Digital Gain and Offset Adjustments
  • Low-Cost Instrumentation
  • Programmable Attenuators
  • Programmable Voltage and Current Sources
  • VCO/Varactor Diode Control
DataSheet
titleDownload file
MAX5820 Data SheetMAX5820.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
MAX582082Voltage- BufferedExt.1Serial - I2C2.75.50.2154µMAX/8-40 to +85$1.50 @1k
Related Products
  • MAX5821:Dual, 10-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC
  • MAX5822:Dual, 12-Bit, Low-Power, 2-Wire, Serial Voltage-Output DAC
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5820LEUANo Longer AvailableMAX5820LEUA+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX5820LEUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX5820LEUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX5820LEUA-TNo Longer AvailableMAX5820LEUA+TuMAX;8 pin-40°C to +85°CSee data sheet
MAX5820MEUANo Longer AvailableMAX5820MEUA+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX5820MEUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX5820MEUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX5820MEUA-TNo Longer AvailableMAX5820MEUA+TuMAX;8 pin-40°C to +85°CSee data sheet
MAX5820.pdf MAX5820
MAX5820_cn.pdf MAX5820
MAX5820_cn.pdf MAX5820