MAXIM MAX5805BAUB+

The MAX5803/MAX5804/MAX5805 single-channel, lowpower, 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 MAX5803/MAX5804/ MAX5805 accept a wide supply voltage range of 2.7V to 5.5V with extremely low power (< 1mW) consumption to accommodate most low-voltage applications. A precision external reference input allows rail-to-rail operation and presents a 100kΩ (typ) load to an external reference. The MAX5803/MAX5804/MAX5805 have an I2Ccompatible, 2-wire interface that operates at clock rates up to 450kHz. The DAC output is buffered and has a low supply current of 155µA (typical at 3.5V) and a low offset error of ±0.5mV (typical). On power-up, the MAX5803/MAX5804/MAX5805 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 MAX5803/MAX5804/MAX5805 include a userconfigurable active-low asynchronous input, AUX for additional flexibility. This input can be programmed to asynchronously clear (CLR) or temporarily gate (GATE) the DAC output to a user-programmable value. A dedicated active-low asynchronous LDAC input is also included. This allows simultaneous output updates of multiple devices. The MAX5803/MAX5804/MAX5805 are available in 10-pin TDFN/µMAX packages and are specified over the -40°C to +125°C temperature range.

• Single High-Accuracy DAC Channel
• 12-Bit Accuracy Without Adjustments
• ±1 LSB INL Buffered Voltage Output
• Guaranteed Monotonic Over All Operating Conditions
• Three Precision Selectable Internal References: 2.048V, 2.500V, or 4.096V
• Internal Output Buffer
• Rail-to-Rail Operation with External Reference
• 6.3µs Settling Time
• Output Directly Drives 2kΩ Loads
• Small, 10-Pin, 2mm x 3mm TDFN and 3mm x 5mm µMAX Packages
• Wide 2.7V to 5.5V Supply Range
• Fast 400kHz I2C-Compatible, 2-Wire Serial Interface with Readback Capability
• Power-On-Reset to Zero-Scale DAC Output
• User-Configurable Asynchronous I/O Functions: CLR, LDAC, GATE
• Three Software-Selectable Power-Down Output Impedances: 1kΩ, 100kΩ, or High Impedance
• Low 155µA DAC Supply Current at 3V

• Programmable Voltage and Current Sources
• Gain and Offset Adjustment
• Automatic Tuning and Optical Control
• Power Amplifier Control and Biasing
• Process Control and Servo Loops
• Portable Instrumentation
• Data Acquisition