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Low-Power, Serial, 14-Bit DACs with Force-Sense Voltage-Output

Best 14-Bit DACs Minimize Power-Up Glitch and Have 1LSB INL

Product Details

Key Features

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 14
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 2
4
Supply Range (V) (min) 2.7
Supply Range (V) (max) 3.6
ICC (mA) (max) 0.35
Settling Time (µs) (typ) 12
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
6.25
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Simplified Block Diagram

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Parameters

Parametric specs for Precision DACs (&lt; 1MHz)
Resolution (bits) 14
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 2
4
Supply Range (V) (min) 2.7
Supply Range (V) (max) 3.6
ICC (mA) (max) 0.35
Settling Time (µs) (typ) 12
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
6.25

Key Features

  • ±1 LSB INL
  • 1µA Shutdown Current
  • "Glitch Free" Output Voltage at Power-Up
  • Single-Supply Operation:
    • +5V (MAX5171)
    • +3V (MAX5173)
  • Full-Scale Output Range:
    • +2.048V (MAX5173, VREF = +1.25V)
    • +4.096V (MAX5171, VREF = +2.5V )
  • Rail-to-Rail Output Amplifier
  • Low THD (-80dB) in Multiplying Operation
  • SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface
  • Programmable Shutdown Mode and Power-Up Reset
  • Buffered Output Capable of Driving 5kΩ || 100pF Loads
  • User-Programmable Digital Output Pin Allows Serial Control of External Components
  • Pin-Compatible Upgrade to the 12-Bit MAX5175/MAX5177

Applications/Uses

  • µP-Controlled Systems
  • Automated Test Equipment (ATE)
  • Digital Gain and Offset Control
  • Digitally Programmable 4mA–20mA Current Loops
  • Industrial Process Controls
  • Motion Control
  • Remote Industrial Controls

Description

The MAX5171/MAX5173 low-power, serial, voltage-output, 14-bit digital-to-analog converters (DACs) feature a precision output amplifier in a space-saving 16-pin QSOP package. The MAX5171 operates from a +5V single supply, and the MAX5173 operates from a +3V single supply. The output amplifier's inverting input is available to allow specific gain configurations, remote sensing, and high output current capability. This makes the MAX5171/ MAX5173 ideal for a wide range of applications, including industrial process control. Both devices draw only 260µA of supply current, which reduces to 1µA in shutdown mode. In addition, the programmable power-up reset feature allows for a user-selectable output voltage of either 0 or midscale.

The 3-wire serial interface is compatible with SPI™, QSPI™, and MICROWIRE™ standards. An input register followed by a DAC register provides a double-buffered input, allowing the input and DAC registers to be updated independently or simultaneously with a 16-bit serial word. Additional features include software and hardware shutdown, shutdown lockout, a hardware clear pin, and a reference input capable of accepting DC and offset AC signals. These devices provide a programmable digital output pin for added functionality and a serial-data output pin for daisy-chaining. All logic inputs are TTL/CMOS-compatible and are internally buffered with Schmitt triggers to allow direct interfacing to optocouplers.

The MAX5171/MAX5173 incorporate a proprietary on-chip circuit that keeps the output voltage virtually "glitch free," limiting the glitches to a few millivolts during power-up. Both devices are available in 16-pin QSOP packages and are specified for the extended (-40°C to +85°C) temperature range. The MAX5171/MAX5173 are pin-compatible upgrades to the 12-bit MAX5175/MAX5177. For 100% pin-compatible DACs with an internal reference, see the 13-bit MAX5132/MAX5133 and the 12-bit MAX5122/MAX5123 data sheets.

Simplified Block Diagram

MAX5171, MAX5173: Functional Block Diagram MAX5171, MAX5173: Functional Block Diagram Zoom icon

Technical Docs

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 .