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MAX5805
Analog Data Converters Digital-to-Analog Converters MAX5805
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MAX5805

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Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output Voltage DACs with Internal Reference and I2C Interface

Feature-Rich, 1-Channel DAC Family

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Product Details

Key Features

Applications/Uses

Simplified Block Diagram

Technical Docs

Data Sheet Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output Voltage DACs with Internal Reference and I2C Interface Dec 23, 2014

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Key Features

  • 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 VDDIO
  • 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

Applications/Uses

  • 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 and Current Sources

Description

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.

Simplified Block Diagram

MAX5803, MAX5804, MAX5805: Functional Diagram MAX5803, MAX5804, MAX5805: Functional Diagram Zoom icon

Technical Docs

Data Sheet Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output Voltage DACs with Internal Reference and I2C Interface Dec 23, 2014

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .