16-Bit Quad High-Accuracy +/-16.5V Output Digital-to-Analog Converter - DAC8734

DAC8734 (ACTIVE)

16-Bit Quad High-Accuracy +/-16.5V Output Digital-to-Analog Converter

 

Description

The DAC8734 is a high-accuracy, quad-channel, 16-bit digital-to-analog converter (DAC) that operates from supply voltages of ±5V to ±18V in bipolar output mode, and from ±5V to +24V/-12V in unipolar mode. With a 5V reference, the DAC8734 can be configured to output ±10V, ±5V, 0V to 20V, or 0V to 10V. The DAC8734 provides 16-bit monotonicity, excellent integral nonlinearity (INL) error of ±1 LSB, low glitch, and low noise over the operating temperature range of -40°C to +105°C. This device is trimmed in production for very low zero and gain errors. In addition, the DAC8734 implements a user-programmable system-level calibration function to achieve ±0.125 LSB zero error and ±1 LSB gain error.

The DAC8734 has integrated reference buffers and output buffers. It features a standard high-speed 1.8V, 3V, or 5V serial peripheral interface (SPI) that operates at clock rates of up to 50MHz to communicate with a DSP or microprocessor. The four DAC channels and the auxiliary registers are addressed with four address bits. The device features double-buffered interface logic for simultaneous updates of all DACs. An asynchronous load input (LDAC) transfers data from the input data register to the DAC latch, and the contents of the DAC latch set the output voltage. The asynchronous RST input sets the output of all four DACs to 0V. The VMON pin is an analog monitor output that multiplexes the individual DAC outputs or the AIN pin.

The DAC8734 is pin-compatible with the DAC8234 (14-bit) and the DAC7716 (12-bit).

Features

  • Bipolar Output: Up to ±16V
  • Unipolar Output: 0V to +20V
  • 16-Bit Monotonic
  • Relative Accuracy: 1 LSB Max
  • Low Zero and Gain Errors
    • Before User Calibration: 4 LSB
    • After User Calibration:
      0.125 LSB Zero Error, 1 LSB Gain Error
  • Low Noise: 60nV/Hz
  • Settling Time: 6µs
  • Configurable Gain: x2/x4
  • Analog Output Monitor
  • Power-Down Mode
  • SPI: Up to 50MHz, 1.8V/3V/5V Logic
  • Daisy-Chain Mode
  • Operating Temperature: -40°C to +105°C
  • Packages: QFN-40 (6x6mm), TQFP-48 (7x7mm)
  • APPLICATIONS
    • Automatic Test Equipment
    • Instrumentation
    • Industrial Process Control
    • Communications

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Parametrics Compare all products in Precision DACs (=<10MSPS)

 
Resolution (Bits)
DAC Channels
DAC Architecture
Interface
Output Type
Output Range Min. (mA/V)
Output Range Max. (mA/V)
Settling Time (µs)
Reference: Type
Rating
Pin/Package
Operating Temperature Range (C)
Special Features
DAC8734 DAC7716 DAC7734 DAC8234 DAC8718 DAC8728
16    12    16    14    16    16   
4    4    4    4    8    8   
R-2R    R-2R    R-2R    R-2R    String    String   
SPI    SPI    SPI    SPI    SPI    Parallel   
Buffered Voltage    Buffered Voltage    Buffered Voltage    Buffered Voltage    Buffered Voltage    Buffered Voltage   
-16.5    -16.5    -10    -16.5    -16.5    -16.5   
16.5    16.5    10    16.5    33    33   
6    6    10    6    15    15   
Ext    Ext    Ext    Ext    Ext    Ext   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
40VQFN
48TQFP   
40VQFN
48TQFP   
48SSOP    40VQFN
48TQFP   
48VQFN
64TQFP   
56QFN
64TQFP   
-40 to 105    -40 to 105    -40 to 85    -40 to 105    -40 to 105    -40 to 105   
On-chip Offset and Gain Calibration
SDO   
On-chip Offset and Gain Calibration
SDO   
Reset to Mid-Scale
SDO   
On-chip Offset and Gain Calibration
SDO   
SDO    On-chip Offset and Gain Calibration   

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