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MAX5812 Dataheets PDF



Part Number MAX5812
Manufacturers Maxim
Logo Maxim
Description 12-Bit Low-Power / 2-Wire / Serial Voltage-Output DAC
Datasheet MAX5812 DatasheetMAX5812 Datasheet (PDF)

19-2340; Rev 0; 1/02 12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC General Description The MAX5812 is a single, 12-bit voltage-output, digital-toanalog 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 powerdown mode decreases current consumption to less than 1µA. The MAX5812 features three software-selectable power-down output impedances:.

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19-2340; Rev 0; 1/02 12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC General Description The MAX5812 is a single, 12-bit voltage-output, digital-toanalog 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 powerdown 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. o Ultra-Low Supply Current 100µA at VDD = 3.6V 130µA at VDD = 5.5V o 300nA Low-Power Power-Down Mode o Single 2.7V to 5.5V Supply Voltage o Fast 400kHz I2C-Compatible 2-Wire Serial Interface o Schmitt-Trigger Inputs for Direct Interfacing to Optocouplers o Rail-to-Rail Output Buffer Amplifier o Three Software-Selectable Power-Down Output Impedances 100kΩ, 1kΩ, and High Impedance o Read-Back Mode for Bus and Data Checking o Power-On Reset to Zero o Miniature 6-Pin SOT23 Package Features MAX5812 Ordering Information PART MAX5812LEUT MAX5812MEUT MAX5812NEUT MAX5812PEUT TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 6 SOT23 6 SOT23 6 SOT23 6 SOT23 TOP MARK AAYT AAYV AAYX AAYZ Applications Digital Gain and Offset Adjustments Programmable Voltage and Current Sources Programmable Attenuation VCO/Varactor Diode Control Low-Cost Instrumentation Battery-Operated Equipment Selector Guide appears at end of data sheet. Functional Diagram appears at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. I2C is a trademark of Philips Corporation. Typical Operating Circuit VDD µC SDA VDD SCL RP RP RS SCL RS SDA RS SCL RS SDA MAX5812 MAX5812 Pin Configuration TOP VIEW VDD OUT VDD 1 GND 2 SDA 3 6 OUT ADD SCL MAX5812 5 4 VDD OUT SOT23 ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 12-Bit Low-Power, 2-Wire, Serial Voltage-Output DAC MAX5812 ABSOLUTE MAXIMUM RATINGS VDD, SCL, SDA to GND ..............................


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