SLAS429E April   2005  – June 2017 DAC8551

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Characteristics
    7. 6.7 Typical Characteristics
      1. 6.7.1 VDD = 5 V
      2. 6.7.2 VDD = 2.7 V
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 DAC Section
        1. 7.3.1.1 Resistor String
        2. 7.3.1.2 Output Amplifier
      2. 7.3.2 Power-On Reset
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-Down Modes
    5. 7.5 Programming
      1. 7.5.1 Serial Interface
      2. 7.5.2 Input Shift Register
      3. 7.5.3 SYNC Interrupt
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Bipolar Operation Using the DAC8551
    2. 8.2 Typical Application
      1. 8.2.1 Loop-Powered, 2-Wire, 4-mA to 20-mA Transmitter With XTR116
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Using the REF02 as a Power Supply for the DAC8551
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
    3. 8.3 System Examples
      1. 8.3.1 Microprocessor Interfacing
        1. 8.3.1.1 DAC8551 to 8051 Interface
        2. 8.3.1.2 DAC8551 to Microwire Interface
        3. 8.3.1.3 DAC8551 to 68HC11 Interface
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Relative Accuracy: 8LSB
  • Glitch Energy: 0.1 nV-s
  • MicroPower Operation: 140 μA at 2.7 V
  • Power-On Reset to Zero
  • Power Supply: 2.7 V to 5.5 V
  • 16-Bit Monotonic
  • Settling Time: 10 μs to ±0.003% FSR
  • Low-Power Serial Interface with
    Schmitt-Triggered Inputs
  • On-Chip Output Buffer Amplifier with
    Rail-to-Rail Operation
  • Power-Down Capability
  • Binary Input
  • SYNC Interrupt Facility
  • Drop-In Compatible With DAC85x1
    and DAC8550 (2's Complement Input)

2 Applications

  • Process Control
  • Data Acquisition Systems
  • Closed-Loop Servo-Control
  • PC Peripherals
  • Portable Instrumentation
  • Programmable Attenuation

3 Description

The DAC8551 is a small, low-power, voltage output, 16-bit digital-to-analog converter (DAC). It is monotonic, provides good linearity, and minimizes undesired code-to-code transient voltages. The DAC8551 uses a versatile 3-wire serial interface that operates at clock rates to 30 MHz and is compatible with standard SPI™, QSPI™, Microwire™, and digital signal processor (DSP) interfaces.

The DAC8551 requires an external reference voltage to set its output range. The DAC8551 incorporates a power-on-reset circuit that ensures the DAC output powers up at 0 V and remains there until a valid write takes place to the device. The DAC8551 contains a power-down feature, accessed over the serial interface, that reduces the current consumption of the device to 200 nA at 5 V.

The low-power consumption of this device in normal operation makes it ideally suited for portable, battery-operated equipment. The power consumption is 0.38 mW at 2.7 V, reducing to less than 1 μW in power‑down mode.

For additional flexibilty, see the DAC8550 (SLAS476), a 2's complement-input counterpart to the DAC8551.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DAC8551 VSSOP (8) 3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Functional Block Diagram

DAC8551 fbd_las429.gif