MAX512, MAX513 Low-Cost, Triple, 8-Bit Voltage-Output DACs With Serial Interface

The MAX512 MAX513 contain three 8-bit, voltage-output digital-to-analog converters (DAC A, DAC B, and DAC C). Output Buffer Amplifiers for DACs A and B provide voltage outputs while reducing external component count. The output Buffer for DAC A CAN source or sink 5mA to within 0.5V of VDD or VSS. The Buffer for DAC B CAN source or sink 0.5mA to within 0.5V of VDD or VSS. 5a0 DAC C is unbuffered, providing a third voltage output with increased accuracy. The MAX512 operates with a single +5V 10% supply, and the MAX513 operates with a +2.7V to +3.6V supply. Both devices CAN also operate with split supplies.
The 3-wire serial Interface has a maximum operating frequency of 5MHz and is compatible with SPI, QSPI, and Microwire. The serial input Shift register is 16 bits long and consists of 8 bits of DAC input data and 8 bits for DAC selection and shutdown. DAC Registers CAN be loaded independently or in parallel at the positive edge of CS. A latched Logic output is also available for auxiliary control.
Ultra-low power consumption and small packages (14-pin DIP/SO) make the MAX512 MAX513 ideal for portable and battery-powered applications. Supply current is only 1mA, dropping to less than 1A in shutdown. Any of the three DACs CAN be independently shut down. In shutdown mode, the DAC's R-2R ladder network is disconnected from the reference input, minimizing system power consumption.
By Maxim Integrated Products