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

Product Details

Key Features

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 12
# Channels 2
Interface Serial - I2C
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 16
Supply Range (V) (min) 2.7
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.215
Settling Time (µs) (typ) 4
Package/Pins UMAX/8
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
8.23
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Simplified Block Diagram

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Parameters

Parametric specs for Precision DACs (&lt; 1MHz)
Resolution (bits) 12
# Channels 2
Interface Serial - I2C
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 16
Supply Range (V) (min) 2.7
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.215
Settling Time (µs) (typ) 4
Package/Pins UMAX/8
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
8.23

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
  • Read-Back Mode for Bus and Data Checking
  • Power-On Reset to Zero
  • 8-Pin µMAX Package

Applications/Uses

  • Battery-Powered Instrumentation
  • Digital Gain and Offset Adjustments
  • Low-Cost Instrumentation
  • Programmable Attenuators
  • Programmable Voltage and Current Sources
  • VCO/Varactor Diode Control

Description

The MAX5822 is a dual, 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 115µA at Vdd = 3.6V. A power-down mode decreases current consumption to less than 1µA. The MAX5822 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 MAX5822 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 MAX5822 minimizes digital noise feedthrough by disconnecting the clock (SCL) signal from the rest of the device when an address mismatch is detected. The MAX5822 is specified over the extended temperature range of -40°C to +85°C and is available in a miniature 8-pin µMAX® package. Refer to the MAX5821 data sheet for the 10-bit version and the MAX5820 data sheet for the 8-bit version.

Simplified Block Diagram

MAX5822: Typical Operating Circuit MAX5822: Typical Operating Circuit 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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.