MAX5822LEUA+T

The MAX5822LEUA+T from Maxim Integrated Products is a dual, 12bit, low power, 2-wire, serial voltage output DAC in 8 pin µMAX package. A power-down mode decreases current consumption to less than 1µA. Other features include internal precision rail to rail output buffers and power-on reset (POR) circuit that powers up DAC in 100Kohm power-down mode. It 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 feed through by disconnecting the clock (SCL) signal from the rest of the device when an address mismatch is detected. Application includes digital gain and offset adjustments, programmable voltage and current sources, programmable attenuation, VCO/varactor diode control, low cost and battery powered instrumentation.

• Supply voltage range is 2.7V to 5.5V, operating temperature range from -40°C to 85°C
• Three software selectable power-down output impedances of 100Kohm, 1Kohm and high impedance
• Ultra low supply current of 115µA at VDD = 3.6V and 135µA at VDD = 5.5V
• ±2LSB integral nonlinearity and ±1LSB differential nonlinearity
• Rail to rail output buffer amplifiers
• Read back mode for bus and data checking
• Power-on reset to zero
• Low supply current of 300nA in power-down mode
• 58.8dB PSSR at VDD = 4.5V to 5.5V, -0.8%FSR gain error
• I2C compatible, 2-wire interface operates at clock rates up to 400KHz