Analog Devices MAX5805 Product Info

• 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
• Flexible 1.8V to 5.5V V_DDIO
• Fast 400kHz, I²C-Compatible, 2-Wire Serial Interface with Readback
• Power-On-Reset to Zero-Scale DAC Output
• User-Configurable Asynchronous I/O Functions: Active-Low CLR, Active-Low LDAC, Active-Low GATE
• Three Software-Selectable Power-Down Output Impedances: 1kΩ, 100kΩ, or High Impedance
• Low 155µA DAC Supply Current at 3V

The MAX5803/MAX5804/MAX5805 single-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 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 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 155µA (typical at 3V) 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 internal reference is initially powered down to allow use of an external reference.

The MAX5803/MAX5804/MAX5805 include a user-configurable active-low asynchronous input, active-low AUX for additional flexibility. This input can be programmed to asynchronously clear (active-low CLR) or temporarily gate (active-low 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.

Applications

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