DAC 2-CH 12-bit 10-Pin uMAX T/R

The MAX5800/MAX5801/MAX5802 2-channel, low-power, 8-/10-/12-bit, voltage-output digital-to-analog converters (DACs) include output buffers and an internal reference that is selectable to be 2.048V, 2.500V, or 4.096V. The MAX5800/MAX5801/MAX5802 accept a wide supply voltage range of 2.7V to 5.5V with extremely low power (1.5mW) consumption to accommodate most low-voltage applications. A precision external reference input allows rail-to-rail operation and presents a 100kO (typ) load to an external reference. The MAX5800/MAX5801/MAX5802 have an I2C-compatible, 2-wire interface that operates at clock rates up to 400kHz. The DAC output is buffered and has a low supply current of less than 250µA per channel and a low offset error of ±0.5mV (typ). On power-up, the MAX5800/MAX5801/MAX5802 reset the DAC outputs to zero, providing additional safety for applications that drive valves or other transducers which need to be off on power-up. The internal reference is initially powered down to allow use of an external reference. The MAX5800/MAX5801/MAX5802 allow simultaneous output updates using software LOAD commands. A clear logic input (active-low CLR) allows the contents of the CODE and the DAC registers to be cleared asynchronously and sets the DAC outputs to zero. The MAX5800/MAX5801/MAX5802 are available in a small 10-pin µMAX and an ultra-small, 10-pin TDFN package and are specified over the -40°C to +125°C temperature range.

• Two High-Accuracy DAC Channels
  • 12-Bit Accuracy Without Adjustment
  • ±1 LSB INL Buffered Voltage Output
  • Monotonic Over All Operating Conditions
  • Independent Mode Settings for Each DAC

Three Precision Selectable Internal References

• 2.048V, 2.500V, or 4.096V

Internal Output Buffer

• Rail-to-Rail Operation with External Reference
• 4.5µs Settling Time
• Outputs Directly Drive 2kO Loads

Small 5mm x 3mm 10-Pin µMAX or Ultra-Small 3mm x 3mm 10-Pin TDFN Package

Wide 2.7V to 5.5V Supply Range

Separate 1.8V to 5.5V V_DDIO Power-Supply Input

Fast 400kHz I²C-Compatible, 2-Wire Serial Interface

Power-On-Reset to Zero-Scale DAC Output

Active-Low CLR For Asynchronous Control

Three Software-Selectable Power-Down Output Impedances

• 1kO, 100kO, or High Impedance
• Low 350µA Supply Current at 3V V_DD