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

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

 

Recommended alternative parts

  • DAC81408  - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent. 

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) Email Download to Excel
Part number Order Resolution (Bits) Architecture DAC channels Interface Output range (Max) (mA/V) Output range (Min) (mA/V) Settling time (µs) Output type Reference: type Rating Operating temperature range (C) Features
DAC8734 Order now 16     R-2R     4     SPI     16.5     -16.5     6     Buffered Voltage     Ext     Catalog     -40 to 105     On-chip Offset and Gain Calibration
SDO    
DAC7716 Order now 12     R-2R     4     SPI     16.5     -16.5     6     Buffered Voltage     Ext     Catalog     -40 to 105     On-chip Offset and Gain Calibration
SDO    
DAC7718 Order now 12     String     8     SPI     33     -16.5     15     Buffered Voltage     Ext     Catalog     -40 to 85     On-chip Offset and Gain Calibration
SDO    
DAC7728 Order now 12     String     8     Parallel     33     -16.5     15     Buffered Voltage     Ext     Catalog     -40 to 105     On-chip Offset and Gain Calibration
Reset to Mid-Scale    
DAC7734 Order now 16     R-2R     4     SPI     10     -10     10     Buffered Voltage     Ext     Catalog     -40 to 85     Reset to Mid-Scale
SDO    
DAC81408 Order now 16     R-2R     8     SPI     20     -20     20     Buffered Voltage     Int     Catalog     -40 to 125