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

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

Product Details

Key Features

Applications/Uses

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 14
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 1
2
Supply Range (V) (min) 4.5
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.4
Settling Time (µs) (typ) 18
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
5.15
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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) 1
2
Supply Range (V) (min) 4.5
Supply Range (V) (max) 5.5
ICC (mA) (max) 0.4
Settling Time (µs) (typ) 18
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
5.15

Key Features

  • ±1 LSB INL
  • 1µA Shutdown Current
  • "Glitch Free" Output Voltage at Power-Up
  • Single-Supply Operation
    • +5V (MAX5170)
    • +3V (MAX5172)
  • Full-Scale Output Range
    • +2.048V (MAX5172, VREF = +1.25V)
    • +4.096V (MAX5170, VREF = +2.5V )
  • Rail-to-Rail Output Amplifier
  • Adjustable Output Offset
  • Low THD (-80dB) in Multiplying Operation
  • SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface
  • Programmable Shutdown Mode and Power-Up Reset (0 or Midscale)
  • 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 MAX5174/MAX5176

Applications/Uses

  • µP-Controlled Systems
  • Automated Test Equipment (ATE)
  • Digital Offset and Gain Adjustments
  • Industrial Process Controls
  • Motion Control
  • Remote Industrial Controls

Description

The MAX5170/MAX5172 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 MAX5170 operates from a +5V single supply and the MAX5172 operates from a +3V single supply. Both devices draw only 280µA of supply current, which reduces to 1µA in shutdown. In addition, the programmable power-up reset feature allows for a user-selectable power-up 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 MAX5170/MAX5172 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. For 100% pin-compatible Dacs with internal reference, see the 13-bit MAX5130/MAX5131 and the 12-bit MAX5120/MAX5121 data sheets.

Simplified Block Diagram

MAX5170, MAX5172: Functional Block Diagram MAX5170, MAX5172: Functional Block Diagram Zoom icon

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 .